JP2014104891A - Cooling structure of vehicular battery pack - Google Patents

Cooling structure of vehicular battery pack Download PDF

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Publication number
JP2014104891A
JP2014104891A JP2012260110A JP2012260110A JP2014104891A JP 2014104891 A JP2014104891 A JP 2014104891A JP 2012260110 A JP2012260110 A JP 2012260110A JP 2012260110 A JP2012260110 A JP 2012260110A JP 2014104891 A JP2014104891 A JP 2014104891A
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Prior art keywords
vehicle
battery pack
intake duct
air
width direction
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Inventor
Masaru Harada
優 原田
Seiji Bito
誠二 尾藤
Kentaro Izumi
健太郎 泉
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2012260110A priority Critical patent/JP2014104891A/en
Priority to IN4743CH2013 priority patent/IN2013CH04743A/en
Priority to CN201310560056.8A priority patent/CN103855442B/en
Priority to DE201310223667 priority patent/DE102013223667A1/en
Publication of JP2014104891A publication Critical patent/JP2014104891A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • 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
    • B60L50/66—Arrangements of batteries
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • 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
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • 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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • H01M10/6563—Gases with forced flow, e.g. by blowers
    • 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
    • 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
    • B60K2001/0416—Arrangement in the rear part of the vehicle
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/545—Temperature
    • 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

Abstract

PROBLEM TO BE SOLVED: To provide a cooling structure of a vehicular battery pack, which is capable of improving cooling performance inside the battery pack.SOLUTION: When cooling a battery pack 7 which is disposed on an upper surface of a rear floor panel 5 behind a rear seat 1 in a vehicle and houses battery modules inside, a downstream-side intake duct 11 connected to the battery pack 7 is disposed between the upper surface of the rear floor panel 5 and a seat cushion 2 of the rear seat 1 so as to be directed toward the front of the vehicle, whereas an upstream-side intake duct 12 connected to a vehicle front end part is disposed between the upper surface of the rear floor panel 5 and the seat cushion 2 of the rear seat 1 so as to be directed longitudinally in a vehicle width direction, and air inlet ports 14 for taking in air inside a vehicle cabin are formed on both end parts of the upstream-side intake duct 12 in the vehicle width direction. Consequently, even when a difference in temperature of air arises in the vehicle width direction inside the vehicle cabin, the temperature of the air confluent at the downstream-side intake duct 11 is averaged.

Description

本発明は、車両用バッテリパックの冷却構造に関し、特に電気自動車やハイブリッド自動車などに使用される高電圧バッテリモジュールを収納したバッテリパックの冷却に好適なものである。   The present invention relates to a cooling structure for a vehicle battery pack, and is particularly suitable for cooling a battery pack containing a high voltage battery module used in an electric vehicle, a hybrid vehicle, and the like.

電気自動車やハイブリッド自動車に使用されるバッテリパックでは、バッテリモジュールの電気容量の大きさからバッテリパックの容積も大きい。そのため、バッテリパックをリヤシートの車両後方のリヤフロアパネルの上面に配置することも多い。このような高電圧バッテリモジュールを収納したバッテリパックでは、充放電の際にバッテリモジュールから熱が発生する。バッテリモジュールの性能劣化を防止するためには、この熱を適切に除去する必要がある。このような車両用バッテリパックの冷却構造としては、例えば下記特許文献１に記載されるものがある。この車両用バッテリパックの冷却構造では、バッテリパック内に車室内の空気を供給して冷却するための吸気ダクトを、リヤシートとリヤ右ドアとの間の空間に配置し、吸気ダクトの吸入口をリヤシートのシートクッションの着座面より下方に開口させている。バッテリパックの内部はファンに接続されており、このファンによって車室内の空気をバッテリパック内に吸入し、バッテリモジュールを冷却する。   In a battery pack used for an electric vehicle or a hybrid vehicle, the battery pack has a large volume due to the large electric capacity of the battery module. For this reason, the battery pack is often arranged on the upper surface of the rear floor panel behind the rear seat in the vehicle. In a battery pack containing such a high voltage battery module, heat is generated from the battery module during charging and discharging. In order to prevent the performance deterioration of the battery module, it is necessary to appropriately remove this heat. An example of such a cooling structure for a vehicle battery pack is described in Patent Document 1 below. In this cooling structure for a battery pack for a vehicle, an intake duct for supplying and cooling air in the vehicle compartment into the battery pack is disposed in a space between the rear seat and the rear right door, and an intake port of the intake duct is provided. The rear seat is opened downward from the seating surface of the seat cushion. The inside of the battery pack is connected to a fan, and the air in the vehicle compartment is sucked into the battery pack by the fan to cool the battery module.

特開２００６−３３５２４４号公報JP 2006-335244 A

しかしながら、前記特許文献１に記載される車両用バッテリパック冷却構造では、リヤシートとリヤ右ドアとの間に吸気ダクトを配置し、リヤシートの右側下方に吸入口を開口している。そのため、例えば日照などにより車室内の温度に偏りがあり、吸気ダクトの吸入口が開口している側の車室内温度が高いと、バッテリパック内部の冷却性能が低下するという問題が生じる。   However, in the vehicle battery pack cooling structure described in Patent Document 1, an intake duct is disposed between the rear seat and the rear right door, and an intake port is opened to the lower right side of the rear seat. For this reason, for example, if the temperature in the vehicle interior is biased due to sunlight or the like and the vehicle interior temperature on the side where the intake port of the intake duct is open is high, the cooling performance inside the battery pack deteriorates.

本発明は、上記のような問題点に着目してなされたものであり、バッテリパック内部の冷却性能を向上することが可能な車両用バッテリパック冷却構造を提供することを目的とするものである。   The present invention has been made paying attention to the above-described problems, and an object of the present invention is to provide a vehicle battery pack cooling structure capable of improving the cooling performance inside the battery pack. .

上記課題を解決するために、発明の一態様は、リヤシートの車両後方でリヤフロアパネルの上面に配置され、内部にバッテリモジュールが収納されたバッテリパックを冷却する車両用バッテリパック冷却構造において、前記リヤフロアパネルの上面と前記リヤシートのシートクッションとの間で前記バッテリパックから車両前方に向けて配置された下流側吸気ダクト部と、前記下流側吸気ダクト部の車両前端部で当該下流側吸気ダクト部に接続され、前記リヤフロアパネルの上面と前記リヤシートのシートクッションとの間で車両幅方向に向けて長手に配置された上流側吸気ダクト部と、前記上流側吸気ダクト部の車両幅方向両端部に形成され、車室内の空気を取入れる空気取入口とを備えたことを特徴とする車両用バッテリパック冷却構造である。   In order to solve the above-described problems, an aspect of the present invention is directed to a vehicle battery pack cooling structure for cooling a battery pack that is disposed on an upper surface of a rear floor panel behind a rear seat and houses a battery module therein. A downstream intake duct portion disposed toward the front of the vehicle from the battery pack between the upper surface of the panel and a seat cushion of the rear seat; and the downstream intake duct portion at the vehicle front end of the downstream intake duct portion. An upstream intake duct portion that is connected and disposed longitudinally in the vehicle width direction between the upper surface of the rear floor panel and the seat cushion of the rear seat, and formed at both ends of the upstream intake duct portion in the vehicle width direction And a vehicle battery pack cooling structure comprising an air intake for taking in air in the vehicle interior A.

また、前記上流側吸気ダクト部と前記下流側吸気ダクト部との接続部を前記上流側吸気ダクト部の車両幅方向中央部に配置した。   In addition, a connecting portion between the upstream side intake duct portion and the downstream side intake duct portion is disposed at a central portion in the vehicle width direction of the upstream side intake duct portion.

発明の一態様によれば、リヤシートの車両後方でリヤフロアパネルの上面に配置され、内部にバッテリモジュールが収納されたバッテリパックを冷却するに際し、バッテリパックに接続された下流側吸気ダクト部をリヤフロアパネルの上面とリヤシートのシートクッションとの間で車両前方に向けて配置し、その車両前端部に接続される上流側吸気ダクト部をリヤフロアパネルの上面とリヤシートのシートクッションとの間で車両幅方向に向けて長手に配置し、上流側吸気ダクト部の車両幅方向両端部に車室内の空気を取入れる空気取入口を形成した。車室内での空気の温度上昇は、例えば日射の方向や日射状態によって車両幅方向で差異が生じる。これに対し、リヤシートのシートクッションの下方の上流側吸気ダクト部の車両幅方向両端部に形成された空気取入口から同時に車室内の空気を取入れる。そのため、乗員の脚部などで空気取入口を遮られることなく、車室内の車両幅方向両端部の空気を吸い込んで下流側吸気ダクト部で合流させる。従って、日射の方向や日射状態によって車室内の車両幅方向で空気の温度差が生じていても、下流側吸気ダクト部で合流された空気は温度が平均化される。即ち、過度に温度上昇した空気がバッテリパックの内部へ吸入されるのを防止し、バッテリパック内部の冷却性能を向上することができる。   According to one aspect of the invention, when cooling a battery pack disposed on the upper surface of the rear floor panel behind the rear seat and containing the battery module therein, the downstream intake duct connected to the battery pack is connected to the rear floor panel. Between the upper surface of the rear seat and the seat cushion of the rear seat, and the upstream intake duct connected to the front end of the vehicle is disposed in the vehicle width direction between the upper surface of the rear floor panel and the seat cushion of the rear seat. An air intake port for taking in the air in the vehicle compartment was formed at both ends of the upstream side intake duct portion in the vehicle width direction. The rise in the temperature of the air in the passenger compartment varies depending on, for example, the direction of solar radiation and the state of solar radiation in the vehicle width direction. On the other hand, the air in the passenger compartment is taken in simultaneously from the air intake ports formed at both ends in the vehicle width direction of the upstream side intake duct portion below the seat cushion of the rear seat. Therefore, the air at the both ends in the vehicle width direction in the vehicle interior is sucked and merged at the downstream intake duct portion without the air intake being blocked by the occupant's legs. Therefore, even if there is a temperature difference in the air in the vehicle width direction in the vehicle interior depending on the direction of solar radiation and the state of solar radiation, the temperature of the air merged in the downstream side intake duct is averaged. That is, it is possible to prevent the air whose temperature has increased excessively from being sucked into the battery pack, and to improve the cooling performance inside the battery pack.

また、上流側吸気ダクト部と下流側吸気ダクト部との接続部を上流側吸気ダクト部の車両幅方向中央部に配置した。そのため、車室内の車両幅方向両側で空気の温度差が生じていても、温度上昇した空気と低温な空気とを同量ずつ均等に混合することができ、過度に温度上昇した空気がバッテリパックの内部へ吸入されるのを確実に防止することができる。   In addition, the connecting portion between the upstream side intake duct portion and the downstream side intake duct portion is disposed at the center in the vehicle width direction of the upstream side intake duct portion. Therefore, even if there is a temperature difference between the air in the vehicle interior in the vehicle width direction, it is possible to evenly mix the air that has risen in temperature and the air that is low in temperature by the same amount. It is possible to reliably prevent the air from being inhaled.

本発明の車両用バッテリパック冷却構造の一実施形態を示す斜視図である。It is a perspective view which shows one Embodiment of the battery pack cooling structure for vehicles of this invention. 図１の車両用バッテリパック冷却構造の平面図である。It is a top view of the battery pack cooling structure for vehicles of FIG. 図１の車両用バッテリパック冷却構造の側面図である。It is a side view of the battery pack cooling structure for vehicles of FIG. 図１の車両用バッテリパック冷却構造の正面図である。It is a front view of the battery pack cooling structure for vehicles of FIG. 図１の車両用バッテリパック冷却構造の吸気ダクトの斜視図である。It is a perspective view of the air intake duct of the battery pack cooling structure for vehicles of FIG. 図１の車両用バッテリパック冷却構造の変形例を示す吸気ダクトの斜視図である。It is a perspective view of the intake duct which shows the modification of the battery pack cooling structure for vehicles of FIG. 図６の車両用バッテリパック冷却構造の側面図である。It is a side view of the battery pack cooling structure for vehicles of FIG.

次に、本発明の車両用バッテリパック冷却構造の実施形態について図面を参照しながら説明する。図１は、本実施形態の車両用バッテリパック冷却構造の一実施形態を示す斜視図、図２は、図１の車両用バッテリパック冷却構造の平面図、図３は、図１の車両用バッテリパック冷却構造の側面図、図４は、図１の車両用バッテリパック冷却構造の正面図、図５は、図１の車両用バッテリパック冷却構造の吸気ダクトの斜視図である。本実施形態の車両は、前後２列の座席、即ちシート列を備える電気自動車又はハイブリッド自動車である。後席に相当するリヤシート１は、乗員が着席するシートクッション２と、乗員の背もたれとなるシートバック３を備えて構成される。図１〜図４に示すリヤシート１は、乗員が２〜３人着席できるように、車両幅方向に長手である。   Next, an embodiment of a vehicle battery pack cooling structure of the present invention will be described with reference to the drawings. 1 is a perspective view showing an embodiment of a vehicle battery pack cooling structure of the present embodiment, FIG. 2 is a plan view of the vehicle battery pack cooling structure of FIG. 1, and FIG. 3 is a vehicle battery of FIG. 4 is a side view of the pack cooling structure, FIG. 4 is a front view of the vehicle battery pack cooling structure of FIG. 1, and FIG. 5 is a perspective view of the intake duct of the vehicle battery pack cooling structure of FIG. The vehicle of the present embodiment is an electric vehicle or a hybrid vehicle having two rows of front and rear seats, that is, a seat row. A rear seat 1 corresponding to a rear seat includes a seat cushion 2 on which an occupant is seated and a seat back 3 on which the occupant is seated. The rear seat 1 shown in FIGS. 1 to 4 is long in the vehicle width direction so that a passenger can take two to three people.

前記リヤシート１のシートバック３より車両前方が車室で、リヤシート１のシートバック３より車両後方は、一般にラゲッジルームと呼ばれる荷室である。車室の下面は、フロントフロアパネル４によって床面が構成され、荷室の下面は、リヤフロアパネル５によって底面（床面）が形成されている。本実施形態のフロントフロアパネル４とリヤフロアパネル５は一連であり、両者の連結部分に、リヤフロアパネル５側が高くなる段差部６が形成され、この段差部６の上にリヤシート１のシートクッション２が配置される。本実施形態では、リヤシート１の車両後方のリヤフロアパネル５の上面にバッテリパック７が配置される。このバッテリパック７内には、多数のセルから構成されるバッテリモジュール８が複数収納され、夫々のバッテリモジュール８に電力が蓄積され、また蓄積された電力が放出される。なお、図５では、バッテリパックを省略している。また、荷室では、一般にトノカバーと呼ばれる目隠し用カバーでリヤフロアパネル５上を覆うこともある。   A front of the vehicle from the seat back 3 of the rear seat 1 is a vehicle compartment, and a rear of the vehicle from the seat back 3 of the rear seat 1 is a luggage room generally called a luggage room. The floor surface of the lower surface of the passenger compartment is constituted by the front floor panel 4, and the bottom surface (floor surface) of the lower surface of the luggage compartment is formed by the rear floor panel 5. The front floor panel 4 and the rear floor panel 5 of this embodiment are a series, and a stepped portion 6 is formed at the connecting portion between the two, and the seat cushion 2 of the rear seat 1 is formed on the stepped portion 6. Be placed. In the present embodiment, the battery pack 7 is disposed on the upper surface of the rear floor panel 5 behind the rear seat 1 in the vehicle. In the battery pack 7, a plurality of battery modules 8 composed of a large number of cells are housed, and electric power is accumulated in each battery module 8, and the accumulated electric power is released. In FIG. 5, the battery pack is omitted. In the luggage compartment, the rear floor panel 5 may be covered with a blindfold cover generally called a tonneau cover.

バッテリパック７の内部は、車両後方向きに突出配置された排気ダクト９を介して冷却ファン１０に接続されている。冷却ファン１０を駆動すると、後述する吸気ダクトから車室内の空気が取入れられ、バッテリパック７の内部のバッテリモジュール８を冷却することができる。一方、バッテリパック７の車両幅方向中央部には、バッテリパック７の内部に通じる下流側吸気ダクト部１１が接続されている。この下流側吸気ダクト部１１は、リヤシート１のシートクッション２とリヤフロアパネル５との間で、車両前方に向けて長手に配置されている。そして、下流側吸気ダクト部１１の車両前方端部には、当該下流側吸気ダクト部１１の長手方向と交差する方向、つまり車両幅方向に長手な上流側吸気ダクト部１２が接続され、この上流側吸気ダクト部１２と下流側吸気ダクト部１１とでバッテリパック７を冷却する空気の吸気ダクト１３が構成されている。この吸気ダクト１３を構成する上流側吸気ダクト部１２及び下流側吸気ダクト部１１は、夫々、リヤシート１のシートクッション２の下面に形成された凹溝内に収納されている。また、特に上流側吸気ダクト部１２は、リヤシート１のシートクッション２下のクロスメンバとして機能するなど、吸気ダクト１３全体でリヤシート１のシートクッション２の強度部材としても機能する。   The interior of the battery pack 7 is connected to a cooling fan 10 via an exhaust duct 9 that is arranged to protrude rearward of the vehicle. When the cooling fan 10 is driven, air in the vehicle compartment is taken in from an air intake duct described later, and the battery module 8 inside the battery pack 7 can be cooled. On the other hand, a downstream side intake duct portion 11 communicating with the inside of the battery pack 7 is connected to a center portion of the battery pack 7 in the vehicle width direction. The downstream side intake duct portion 11 is disposed longitudinally between the seat cushion 2 of the rear seat 1 and the rear floor panel 5 toward the front of the vehicle. An upstream intake duct portion 12 that is long in the vehicle width direction is connected to the vehicle front end of the downstream intake duct portion 11 in a direction intersecting the longitudinal direction of the downstream intake duct portion 11. The side intake duct portion 12 and the downstream side intake duct portion 11 constitute an air intake duct 13 that cools the battery pack 7. The upstream side intake duct portion 12 and the downstream side intake duct portion 11 constituting the intake duct 13 are respectively housed in concave grooves formed on the lower surface of the seat cushion 2 of the rear seat 1. In particular, the upstream intake duct portion 12 functions as a strength member of the seat cushion 2 of the rear seat 1 as a whole, such as the cross member below the seat cushion 2 of the rear seat 1.

本実施形態では、車両幅方向に長手な上流側吸気ダクト部１２の車両幅方向両端部に、車室内の空気を取入れる空気取入口１４を開設している。この空気取入口１４は、リヤシート１のシートクッション２の下方で、車室内の左右のリヤドアの近傍、つまり車室の車両幅方向両端部に開口しており、そこから車室内の空気を取入れてバッテリパック７の内部に吸入する。また、下流側吸気ダクト部１１と上流側吸気ダクト部１２との接続部は、車両幅方向に長手な上流側吸気ダクト部１２の車両幅方向中央部に位置するように構成している。そのため、図２に示すように、下流側吸気ダクト部１１から車両右側の空気取入口１４までの車両幅方向距離Ｌ１と、下流側吸気ダクト部１１から車両左側の空気取入口１４までの車両幅方向距離Ｌ２は同等又は略同等である。   In the present embodiment, air intake ports 14 for taking in air in the vehicle compartment are opened at both ends in the vehicle width direction of the upstream side intake duct portion 12 that is long in the vehicle width direction. The air intake 14 is opened below the seat cushion 2 of the rear seat 1 and in the vicinity of the left and right rear doors in the vehicle interior, that is, at both ends in the vehicle width direction of the vehicle interior. Inhaled into the battery pack 7. Further, the connecting portion between the downstream side intake duct portion 11 and the upstream side intake duct portion 12 is configured to be positioned at the center in the vehicle width direction of the upstream side intake duct portion 12 that is long in the vehicle width direction. Therefore, as shown in FIG. 2, the vehicle width direction distance L1 from the downstream side intake duct portion 11 to the air intake port 14 on the right side of the vehicle, and the vehicle width from the downstream side intake duct portion 11 to the air intake port 14 on the left side of the vehicle. The direction distance L2 is equivalent or substantially equivalent.

車両の車室内では、周知のように、日照の方向や日照状態によって空気の温度に偏りが生じる。この車室内空気の温度の偏りは、日照が差し込む、差し込まないなどから、車両前後方向と共に車両幅方向に大きく生じる。例えば、バッテリパックの内部を冷却するための空気を車室内から取入れるに際し、空気取入口が車両幅方向の何れか一方にだけ開口している場合には、日照によって温度が過度に上昇した空気を取入れる可能性があり、そのような場合には、バッテリパックの内部の冷却性能が低下する。これに対し、本実施形態の車両用バッテリパック冷却構造では、リヤシート１のシートクッション２の下方において、車室内の車両幅方向両側からバッテリパック７の内部を冷却するための空気を取入れる。そのため、車両幅方向の一方の車室内空気の温度が高い場合であっても、車両幅方向の他方の低い温度の車室内空気を取入れることにより、下流側吸気ダクト部１１からバッテリパック７の内部に過度に高い温度の空気が吸入されるのを防止することができる。更には、下流側吸気ダクト部１１から車両右側の空気取入口１４までの距離Ｌ１と車両左側の空気取入口１４までの距離Ｌ２を等しくすることにより、車両幅方向何れか一方の温度上昇した車室内空気と車両幅方向何れか他方の低温の車室内空気を均等に混合することができる。   As is well known, in the vehicle interior of a vehicle, the air temperature is biased depending on the direction of sunlight and the state of sunlight. The temperature deviation of the passenger compartment air greatly occurs in the vehicle width direction as well as in the vehicle front-rear direction because sunlight is inserted or not. For example, when air for cooling the inside of the battery pack is taken in from the passenger compartment, if the air intake is open only in one of the vehicle width directions, the air whose temperature has excessively increased due to sunlight In such a case, the cooling performance inside the battery pack is deteriorated. On the other hand, in the vehicle battery pack cooling structure of the present embodiment, air for cooling the inside of the battery pack 7 is introduced from both sides in the vehicle width direction in the vehicle interior below the seat cushion 2 of the rear seat 1. Therefore, even when the temperature of one vehicle interior air in the vehicle width direction is high, by taking in the other low-temperature vehicle interior air in the vehicle width direction, the battery pack 7 It is possible to prevent excessively high temperature air from being inhaled inside. Further, by making the distance L1 from the downstream intake duct portion 11 to the air intake 14 on the right side of the vehicle equal to the distance L2 from the air intake 14 on the left side of the vehicle, the vehicle whose temperature has increased in any one of the vehicle width directions. The room air and the other low-temperature vehicle interior air in the vehicle width direction can be evenly mixed.

このように本実施形態の車両用バッテリパック冷却構造では、リヤシート１の車両後方でリヤフロアパネル５の上面に配置され、内部にバッテリモジュール８が収納されたバッテリパック７を冷却するに際し、バッテリパック７に接続された下流側吸気ダクト部１１をリヤフロアパネル５の上面とリヤシート１のシートクッション２との間で車両前方に向けて配置し、その車両前端部に接続される上流側吸気ダクト部１２をリヤフロアパネル５の上面とリヤシート１のシートクッション２との間で車両幅方向に向けて長手に配置し、上流側吸気ダクト部１２の車両幅方向両端部に車室内の空気を取入れる空気取入口１４を形成した。車室内での空気の温度上昇は、例えば日射の方向や日射状態によって車両幅方向で差異が生じる。これに対し、リヤシート１のシートクッション２の下方の上流側吸気ダクト部１２の車両幅方向両端部に形成された空気取入口１４から同時に車室内の空気を取入れる。そのため、乗員の脚部などで空気取入口を遮られることなく、車室内の車両幅方向両端部の空気を吸い込んで下流側吸気ダクト部１１で合流させる。従って、車室内の車両幅方向で空気の温度差が生じていても、下流側吸気ダクト部１１で合流された空気は温度が平均化される。即ち、過度に温度上昇した空気がバッテリパック７の内部へ吸入されるのを防止し、バッテリパック７内部の冷却性能を向上することができる。   As described above, in the vehicle battery pack cooling structure of the present embodiment, when cooling the battery pack 7 disposed on the upper surface of the rear floor panel 5 behind the rear seat 1 and housing the battery module 8 therein, the battery pack 7 is cooled. The downstream side intake duct portion 11 connected to the front side of the vehicle is disposed between the upper surface of the rear floor panel 5 and the seat cushion 2 of the rear seat 1, and the upstream side intake duct portion 12 connected to the front end portion of the vehicle is disposed. An air intake port that is disposed longitudinally in the vehicle width direction between the upper surface of the rear floor panel 5 and the seat cushion 2 of the rear seat 1 and takes air in the vehicle compartment at both ends in the vehicle width direction of the upstream side intake duct portion 12. 14 was formed. The rise in the temperature of the air in the passenger compartment varies depending on, for example, the direction of solar radiation and the state of solar radiation in the vehicle width direction. On the other hand, the air in the vehicle compartment is taken in simultaneously from the air intake ports 14 formed at both ends in the vehicle width direction of the upstream side intake duct portion 12 below the seat cushion 2 of the rear seat 1. Therefore, the air at the both ends in the vehicle width direction in the vehicle interior is sucked and merged in the downstream intake duct portion 11 without the air intake being blocked by the occupant's legs. Therefore, even if there is a temperature difference in the air in the vehicle width direction in the vehicle interior, the temperature of the air joined in the downstream side intake duct portion 11 is averaged. That is, it is possible to prevent the air whose temperature has increased excessively from being sucked into the battery pack 7 and improve the cooling performance inside the battery pack 7.

また、上流側吸気ダクト部１２と下流側吸気ダクト部１１との接続部を上流側吸気ダクト部１２の車両幅方向中央部に配置した。そのため、車室内の車両幅方向両側で空気の温度差が生じていても、温度上昇した空気と低温な空気とを同量ずつ均等に混合することができ、過度に温度上昇した空気がバッテリパック７の内部へ吸入されるのを確実に防止することができる。   Further, the connecting portion between the upstream side intake duct portion 12 and the downstream side intake duct portion 11 is disposed at the center of the upstream side intake duct portion 12 in the vehicle width direction. Therefore, even if there is a temperature difference between the air in the vehicle interior in the vehicle width direction, it is possible to evenly mix the air that has risen in temperature and the air that is low in temperature by the same amount. Inhalation into the interior of 7 can be reliably prevented.

図６、図７は、本実施形態の車両用バッテリパック冷却構造の変形例であり、図６は、吸気ダクト１３の斜視図、図７は吸気ダクト１３の側面図である。なお、前記実施形態と同等の構成には同等の符号を付して、その詳細な説明を省略する。この変形例では、下流側吸気ダクト部１１を上流側吸気ダクト部１２内に貫通させて、更に車両前方（リヤシート１のシートクッション２の車両前方端部）まで延長し、その延長した車両前方端部に車両前方向きに開口する中央空気取入口１５を形成した。下流側吸気ダクト部１１と上流側吸気ダクト部１２は、貫通部において、互いに内部が連結されている。この変形例によれば、前記実施形態に加え、更に車両幅方向中央部の車室内空気もバッテリパック７の内部冷却用空気として取入れて混合することができるため、バッテリパック７内部の冷却用空気温度をより一層均一化することが可能となる。   6 and 7 are modified examples of the vehicle battery pack cooling structure of the present embodiment, FIG. 6 is a perspective view of the intake duct 13, and FIG. 7 is a side view of the intake duct 13. In addition, the same code | symbol is attached | subjected to the structure equivalent to the said embodiment, and the detailed description is abbreviate | omitted. In this modification, the downstream side intake duct portion 11 is penetrated into the upstream side intake duct portion 12 and further extended to the front of the vehicle (the vehicle front end portion of the seat cushion 2 of the rear seat 1). A central air intake 15 that opens toward the front of the vehicle is formed in the part. The downstream side intake duct portion 11 and the upstream side intake duct portion 12 are connected to each other at the penetrating portion. According to this modified example, in addition to the above embodiment, the vehicle interior air in the center in the vehicle width direction can also be taken in and mixed as the internal cooling air of the battery pack 7, so the cooling air inside the battery pack 7 can be mixed. It becomes possible to make temperature uniform.

１ リヤシート
２ シートクッション
３ シートバック
４ フロントフロアパネル
５ リヤフロアパネル
６ 段差部
７ バッテリパック
８ バッテリモジュール
９ 排気ダクト
１０ 冷却ファン
１１ 下流側吸気ダクト部
１２ 上流側吸気ダクト部
１３ 吸気ダクト
１４ 空気取入口
１５ 中央空気取入口 DESCRIPTION OF SYMBOLS 1 Rear seat 2 Seat cushion 3 Seat back 4 Front floor panel 5 Rear floor panel 6 Step part 7 Battery pack 8 Battery module 9 Exhaust duct 10 Cooling fan 11 Downstream side intake duct part 12 Upstream side intake duct part 13 Intake duct 14 Air intake 15 Central air intake

Claims (2)

リヤシートの車両後方でリヤフロアパネルの上面に配置され、内部にバッテリモジュールが収納されたバッテリパックを冷却する車両用バッテリパック冷却構造において、
前記リヤフロアパネルの上面と前記リヤシートのシートクッションとの間で前記バッテリパックから車両前方に向けて配置された下流側吸気ダクト部と、
前記下流側吸気ダクト部の車両前端部で当該下流側吸気ダクト部に接続され、前記リヤフロアパネルの上面と前記リヤシートのシートクッションとの間で車両幅方向に向けて長手に配置された上流側吸気ダクト部と、
前記上流側吸気ダクト部の車両幅方向両端部に形成され、車室内の空気を取入れる空気取入口とを備えたことを特徴とする車両用バッテリパック冷却構造。 In the vehicle battery pack cooling structure for cooling the battery pack that is disposed on the upper surface of the rear floor panel behind the rear seat and that houses the battery module,
A downstream intake duct portion disposed from the battery pack toward the front of the vehicle between an upper surface of the rear floor panel and a seat cushion of the rear seat;
Upstream intake air that is connected to the downstream intake duct portion at the vehicle front end of the downstream intake duct portion and is disposed longitudinally in the vehicle width direction between the upper surface of the rear floor panel and the seat cushion of the rear seat. A duct section;
A battery pack cooling structure for a vehicle, comprising air intake ports formed at both ends of the upstream side intake duct portion in the vehicle width direction for taking in air in the vehicle compartment. 前記上流側吸気ダクト部と前記下流側吸気ダクト部との接続部を前記上流側吸気ダクト部の車両幅方向中央部に配置したことを特徴とする請求項１に記載の車両用バッテリパック冷却構造。   2. The vehicle battery pack cooling structure according to claim 1, wherein a connection portion between the upstream side intake duct portion and the downstream side intake duct portion is disposed at a vehicle width direction center portion of the upstream side intake duct portion. .
JP2012260110A 2012-11-28 2012-11-28 Cooling structure of vehicular battery pack Pending JP2014104891A (en)

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DE201310223667 DE102013223667A1 (en) 2012-11-28 2013-11-20 Battery pack cooling structure for motor car, has air intake openings introducing air inside vehicle cabin that is formed at end portions along vehicle width direction of input air intake line portion

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* Cited by examiner, † Cited by third party
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JP2019104321A (en) * 2017-12-11 2019-06-27 トヨタ自動車株式会社 Cooling duct
JP2020043663A (en) * 2018-09-10 2020-03-19 株式会社Ｓｕｂａｒｕ Cooling control device of storage battery, and electric vehicle
CN113363613A (en) * 2021-06-01 2021-09-07 安徽五行动力新能源有限公司 Lithium battery heat dissipation device capable of achieving graded adjustment and cooling and graded adjustment method thereof
WO2021240803A1 (en) * 2020-05-29 2021-12-02 日産自動車株式会社 Structure for discharging battery-cooling air
US20220320630A1 (en) * 2021-03-30 2022-10-06 Honda Motor Co., Ltd. Electric vehicle

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Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4602164B2 (en) 2005-06-02 2010-12-22 本田技研工業株式会社 vehicle
JP2008044424A (en) * 2006-08-11 2008-02-28 Toyota Motor Corp Secondary battery cooling structure
JP2008221988A (en) * 2007-03-12 2008-09-25 Toyota Motor Corp Automobile
US9126477B2 (en) * 2007-05-30 2015-09-08 Ford Global Technologies, Llc Ductless cooling system for a vehicle power storage unit

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018129179A (en) * 2017-02-08 2018-08-16 株式会社デンソー Power supply device and working machine
JP2019104321A (en) * 2017-12-11 2019-06-27 トヨタ自動車株式会社 Cooling duct
JP2020043663A (en) * 2018-09-10 2020-03-19 株式会社Ｓｕｂａｒｕ Cooling control device of storage battery, and electric vehicle
JP7206079B2 (en) 2018-09-10 2023-01-17 株式会社Subaru Storage battery cooling control device and electric vehicle
WO2021240803A1 (en) * 2020-05-29 2021-12-02 日産自動車株式会社 Structure for discharging battery-cooling air
JP7448001B2 (en) 2020-05-29 2024-03-12 日産自動車株式会社 Battery cooling air exhaust structure
US20220320630A1 (en) * 2021-03-30 2022-10-06 Honda Motor Co., Ltd. Electric vehicle
CN113363613A (en) * 2021-06-01 2021-09-07 安徽五行动力新能源有限公司 Lithium battery heat dissipation device capable of achieving graded adjustment and cooling and graded adjustment method thereof

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