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JP2014031111A - Vehicle battery pack - Google Patents

Vehicle battery pack Download PDF

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Publication number
JP2014031111A
JP2014031111A JP2012172809A JP2012172809A JP2014031111A JP 2014031111 A JP2014031111 A JP 2014031111A JP 2012172809 A JP2012172809 A JP 2012172809A JP 2012172809 A JP2012172809 A JP 2012172809A JP 2014031111 A JP2014031111 A JP 2014031111A
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Prior art keywords
vehicle
battery pack
exhaust hood
cooling air
cooling fan
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JP2012172809A
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JP6035967B2 (en
Inventor
Koji Takizawa
弘二 瀧澤
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Suzuki Motor Corp
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Suzuki Motor Corp
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Priority to JP2012172809A priority Critical patent/JP6035967B2/en
Priority to DE102013214495.4A priority patent/DE102013214495B4/en
Priority to CN201310335081.6A priority patent/CN103579545B/en
Publication of JP2014031111A publication Critical patent/JP2014031111A/en
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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
    • 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
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • B60K2001/0416—Arrangement in the rear part of the vehicle
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack which improves the assemblability, inhibits rainwater and washing water from intruding into the interior, and improves the output performance of a battery.SOLUTION: In a vehicle battery pack 1, a battery 3 and a cooling fan 5 are housed in a case 2 in which an air intake port 24 and an exhaust port 25 are formed. The air intake port 24 is placed at an upper part, and the exhaust port 25 is placed at a side part of the case 2. A cooling fan duct 6 allows the cooling fan 5 and the exhaust port 25 to communicate with each other. An exhaust hood 7 is provided along an outer peripheral edge of the exhaust port 25 so as to enclose an area near the exhaust port 25. A passage opening/closing part 28, to which a valve 29 is attached, is provided in a cooling air exhaust passage 27 composed of the cooling fan duct 6 and the exhaust hood 7.

Description

本発明は車両用バッテリパックに関し、さらに詳しくは、冷却装置を備える車両用バッテリパックに関する。   The present invention relates to a vehicle battery pack, and more particularly to a vehicle battery pack including a cooling device.

電動車両に搭載されるバッテリパックは、出力性能を高めるために、冷却ファンによってバッテリの温度を適温に保つことが望ましい。そこで、車両走行中や一時停止（例えば、渋滞、信号待ちなど）中に拘わらずに、バッテリパック用の冷却ファンは、バッテリの温度が閾値以上になった場合に回転するようになっている。そして、バッテリパックは、バッテリを冷却した空気を、排気ダクトを介して外部へ排出するようになっている。一方、車両走行中や一時停止中であっても、バッテリの温度が閾値以下になった場合には、バッテリの温度を適温に戻すために、冷却ファンの回転を停止するようになっている。   In order to improve output performance, it is desirable that the battery pack mounted on the electric vehicle be kept at an appropriate temperature by a cooling fan. Therefore, regardless of whether the vehicle is running or temporarily stopped (for example, traffic jam, waiting for a signal, etc.), the cooling fan for the battery pack rotates when the temperature of the battery exceeds a threshold value. The battery pack discharges the air that has cooled the battery to the outside through the exhaust duct. On the other hand, even when the vehicle is running or temporarily stopped, when the temperature of the battery falls below the threshold value, the rotation of the cooling fan is stopped in order to return the battery temperature to an appropriate temperature.

従来、車両のフロアパネルの下部にバッテリユニット（バッテリパック）を配置した技術が提案されている（例えば、特許文献１参照）。バッテリユニットにおける車両前後方向の前端部には、冷却風導入口が設けられている。この冷却風導入口には、シャッタが設けられている。そして、この冷却風導入口には、車両外部から車室内前部まで延びる送風ダクトが取り付けられている。さらに、バッテリユニットの下部には、冷却風の排出口が設けられている。   Conventionally, a technique has been proposed in which a battery unit (battery pack) is disposed in a lower part of a floor panel of a vehicle (see, for example, Patent Document 1). A cooling air inlet is provided at the front end of the battery unit in the vehicle longitudinal direction. A shutter is provided at the cooling air inlet. And the ventilation duct extended from the vehicle exterior to a vehicle interior front part is attached to this cooling wind inlet. Furthermore, an outlet for cooling air is provided at the lower part of the battery unit.

特開２００９−８３６５６号公報JP 2009-83656 A

しかしながら、上記のバッテリユニットの構造および搭載構造では、送風ダクトと車体部品とが干渉しないようにバッテリユニットと送風ダクトとを別々に車体に組み付ける必要があった。このため、従来構造では、作業者の作業負担が増加するという課題がある。したがって、この従来構造では、バッテリユニットの組付性が低下するという課題がある。   However, in the battery unit structure and mounting structure described above, the battery unit and the air duct need to be separately assembled to the vehicle body so that the air duct and the vehicle body parts do not interfere with each other. For this reason, in the conventional structure, there exists a subject that the work burden of an operator increases. Therefore, in this conventional structure, there exists a subject that the assembly | attachment property of a battery unit falls.

また、上記の従来構造のバッテリユニットでは、バッテリユニットの最下部に冷却風の排出口が開口しているため、雨天時の車両走行や高圧洗浄した際に、雨水や洗浄水などが排出口に流れ込んで、バッテリユニット内部へと侵入し易くなる。このため、このようなバッテリユニットでは、雨水や洗浄水などでバッテリユニット内の結線部（例えば、電力・電流を伝えるバスバーなど）に腐食が発生したり、錆が発生したりして、バッテリの出力性能が低下する虞がある。   Moreover, in the battery unit having the above-described conventional structure, the cooling air discharge port is opened at the lowermost part of the battery unit. It flows in easily and enters the inside of the battery unit. For this reason, in such a battery unit, rainwater, washing water, etc. may cause corrosion or rust in the connection part (for example, a bus bar that transmits power / current). There is a risk that the output performance will deteriorate.

さらに、上記の従来構造のバッテリユニットでは、冷却風導入口にシャッタを設けているものの、排出口はシャッタを設けずに外部に露出している。このため、車両の一時停止時、あるいは渋滞時に、エンジンから排出される排気ガスがバッテリユニット内へと流れ易くなるという問題がある。この排気ガス中には、水分やその他の物質が含まれているため、バッテリユニットに悪影響を与える。冷却風導入口に設けられたシャッタは、排気ガスの侵入を防止するものではなく、万一、車室内から水滴が浸入しないようにするためのものであって、車外の排気ガスの侵入を防止するものではない。   Further, in the battery unit having the above-described conventional structure, although the shutter is provided at the cooling air introduction port, the discharge port is exposed to the outside without providing the shutter. For this reason, there is a problem that exhaust gas discharged from the engine easily flows into the battery unit when the vehicle is temporarily stopped or congested. Since this exhaust gas contains moisture and other substances, the battery unit is adversely affected. The shutter provided at the cooling air inlet does not prevent the intrusion of exhaust gas, but should prevent water droplets from entering the interior of the vehicle and prevent the ingress of exhaust gas outside the vehicle. Not what you want.

また、上記の従来構造のバッテリユニットでは、冷却ファンから最も遠い位置に冷却風導入口が設けられている。このため、冷却風導入口では冷却ファンの回転によって生じる風圧が弱まってしまう。したがって、冷却ファンの回転で生じる風圧では、シャッタが開閉しない虞がある。さらに、上記の従来構造のバッテリユニットでは、冷却風導入口に比較的大きなシャッタが一つのみ設けられている。このため、シャッタの重量が比較的重くなって、冷却ファンによる風圧のみでは開閉できなくなる虞がある。したがって、従来構造のバッテリユニットでは、バッテリの出力性能を低下させる虞がある。   In the battery unit having the conventional structure, the cooling air introduction port is provided at a position farthest from the cooling fan. For this reason, the wind pressure generated by the rotation of the cooling fan is weakened at the cooling air introduction port. Therefore, there is a possibility that the shutter may not be opened and closed by the wind pressure generated by the rotation of the cooling fan. Furthermore, in the battery unit having the conventional structure, only one relatively large shutter is provided at the cooling air inlet. For this reason, the weight of the shutter becomes relatively heavy, and there is a possibility that the shutter cannot be opened / closed only by the wind pressure from the cooling fan. Therefore, in the battery unit having a conventional structure, the output performance of the battery may be reduced.

本発明は、上記の課題に鑑みてなされたものであって、組付性を良好にしつつ、雨水や洗浄水などが内部へ浸入することを抑制し、バッテリの出力性能を向上するバッテリパックを提供することを目的とする。   The present invention has been made in view of the above problems, and provides a battery pack that improves the output performance of a battery by preventing rainwater, washing water, and the like from entering the inside while improving the assemblability. The purpose is to provide.

上述した課題を解決し、目的を達成するために、本発明の一態様は、内部に冷却風を導入する吸入口および外部へ冷却風を排出する排出口が形成されたケース内に、バッテリと、バッテリに冷却風を送る冷却ファンと、を収容した車両用バッテリパックにおいて、吸入口が車両搭載時の車両上下方向の上部に配置され、排出口が前記ケースの側部に配置され、冷却ファンと排出口とが冷却ファン用ダクトで連通され、排出口の外側周縁に沿って排出口の近傍を囲むように排気フードが設けられ、冷却ファン用ダクトと排気フードとでなる冷却風排出流路内に、冷却ファンから送風されたときに冷却風排出流路を開放し、かつこの冷却ファンからの送風が停止されているときに冷却風排出流路を閉塞する弁体を取り付けた流路開閉部が設けられていることを特徴とする。   In order to solve the above-described problems and achieve the object, one embodiment of the present invention includes a battery in a case in which a suction port for introducing cooling air into the inside and a discharge port for discharging cooling air to the outside are formed. And a cooling fan for sending cooling air to the battery, the vehicle battery pack containing the cooling fan, the suction port is disposed at an upper part of the vehicle in the vertical direction when the vehicle is mounted, and the discharge port is disposed at a side portion of the case. Cooling air exhaust flow path comprising a cooling fan duct and an exhaust hood, wherein the exhaust hood is connected to the exhaust port by a cooling fan duct, and an exhaust hood is provided along the outer periphery of the exhaust port so as to surround the vicinity of the exhaust port. Opening and closing the flow path with a valve body that opens the cooling air discharge passage when it is blown from the cooling fan, and closes the cooling air discharge passage when the blowing from the cooling fan is stopped Part is provided And said that you are.

上記態様としては、流路開閉部は、複数の弁体を備え、これら複数の弁体は、複数の弁体が全部で、冷却風排出流路を全体的に閉塞可能とするように並置され、それぞれの弁体は、冷却風の圧力に応じて、冷却風排出流路を、部分的に開放と閉塞を独自に行うことが好ましい。   In the above aspect, the flow path opening / closing section includes a plurality of valve bodies, and the plurality of valve bodies are juxtaposed so that the plurality of valve bodies can be totally closed with the cooling air discharge flow path. It is preferable that each valve body independently opens and closes the cooling air discharge channel partially according to the pressure of the cooling air.

上記態様としては、排気フードは、排出口から側方へ向けて直線的に突出するように形成され、排気フードの車両搭載時の車両上下方向の上側に配置されたフード上側壁部の先端部は、排気フードの車両搭載時の車両上下方向の下側に配置されたフード下側壁部の先端部よりも側方へ向けて突出し、排気フードの下流端部に冷却風を側方へ吐出させる空気吐出口を形成し、フード下側壁部の先端部から空気吐出口の上縁部に向かって立ち上がる立壁部が形成されていることが好ましい。   In the above aspect, the exhaust hood is formed so as to protrude linearly from the discharge port toward the side, and the tip of the upper side wall portion of the hood disposed on the upper side in the vehicle vertical direction when the exhaust hood is mounted on the vehicle. Protrudes sideward from the front end of the hood lower side wall disposed on the lower side of the vehicle in the vertical direction when the exhaust hood is mounted on the vehicle, and discharges the cooling air to the downstream end of the exhaust hood. It is preferable that an air discharge port is formed, and a standing wall portion that rises from the tip end portion of the hood lower side wall portion toward the upper edge portion of the air discharge port is formed.

上記態様としては、排気フードの上流端部内に流路開閉部が設けられ、上流端部の外周面には外側に向けて突出する係合用爪部と係止部とが形成され、排気フードが、ケースに対して、係合用爪部と係止部とで、排出口の周縁部を挟むように取り付けられていることが好ましい。   As the above aspect, a flow path opening / closing portion is provided in the upstream end portion of the exhaust hood, and an engaging claw portion and a locking portion projecting outward are formed on the outer peripheral surface of the upstream end portion. The case is preferably attached to the case so that the peripheral portion of the discharge port is sandwiched between the engaging claw portion and the locking portion.

上記態様としては、係合用爪部は、係止部よりも排気フードの上流側に配置され、かつ上流側から下流側に向けて、排気フードから離れる方向に傾斜する係合用斜面を有することが好ましい。   As an aspect described above, the engaging claw portion may be disposed on the upstream side of the exhaust hood with respect to the locking portion, and may have an engaging slope inclined in a direction away from the exhaust hood from the upstream side toward the downstream side. preferable.

上記態様としては、車両のリヤシートよりも車両前後方向後方側のリヤフロアパネルに開口部が形成され、かつこの開口部に挿入配置されたケースの上部を外側から覆うカバー部材が取り付けられた構造に対して、カバー部材の天井部下面とケースの頂面とで挟まれた天井面側隙間に吸入口が配置され、カバー部材の周壁内面と前記ケースの外側面とで挟まれた周面側隙間内に排気フードが配置されるように搭載されることが好ましい。   In the above aspect, the structure is such that an opening is formed in the rear floor panel on the rear side in the vehicle front-rear direction with respect to the rear seat of the vehicle, and a cover member that covers the upper portion of the case inserted and arranged in the opening from the outside is attached. The suction port is disposed in the ceiling surface side gap sandwiched between the lower surface of the ceiling portion of the cover member and the top surface of the case, and in the circumferential surface side gap sandwiched between the inner surface of the peripheral wall of the cover member and the outer surface of the case It is preferable that the exhaust hood is mounted on the vehicle.

本発明によれば、組付性を良好にしつつ、雨水や洗浄水などが内部へ浸入することを抑制し、バッテリの出力性能を向上するバッテリパックを実現ができる。   According to the present invention, it is possible to realize a battery pack that improves the output performance of a battery by suppressing intrusion of rainwater, washing water, and the like into the interior while improving the assemblability.

図１は、本発明の実施の形態に係る車両用バッテリパックを搭載した車両を示す側面説明図である。FIG. 1 is an explanatory side view showing a vehicle equipped with a vehicle battery pack according to an embodiment of the present invention. 図２は、本発明の実施の形態に係る車両用バッテリパックを搭載した車両の後部を示し、リヤフロアパネルの開口部からカバー部材を取り外した状態の平面説明図である。FIG. 2 is an explanatory plan view showing the rear portion of the vehicle on which the vehicle battery pack according to the embodiment of the present invention is mounted, with the cover member removed from the opening of the rear floor panel. 図３は、本発明の実施の形態に係る車両用バッテリパックを搭載した車両の後部を示し、リヤフロアパネルの開口部に取り付けたカバー部材のリッドを取り外した状態の平面説明図である。FIG. 3 is an explanatory plan view showing a rear portion of the vehicle on which the vehicle battery pack according to the embodiment of the present invention is mounted, with the lid of the cover member attached to the opening of the rear floor panel being removed. 図４は、本発明の実施の形態に係る車両用バッテリパックを搭載した車両の後部に搭載されたバッテリパックを後方から見た背面説明図である。FIG. 4 is an explanatory rear view of the battery pack mounted on the rear portion of the vehicle on which the vehicle battery pack according to the embodiment of the present invention is mounted as viewed from the rear. 図５は、本実施の形態に係る車両用バッテリパック内における冷却風の流れを説明する斜視図である。FIG. 5 is a perspective view for explaining the flow of cooling air in the vehicle battery pack according to the present embodiment. 図６は、図３のVI−VI断面図である。6 is a cross-sectional view taken along the line VI-VI in FIG. 図７は、図３のVII−VII断面図である。7 is a sectional view taken along line VII-VII in FIG. 図８は、本発明の実施の形態に係る車両用バッテリパックを車両に搭載した箇所を後方斜め上方から見た斜視図である。FIG. 8 is a perspective view of a portion where the vehicle battery pack according to the embodiment of the present invention is mounted on the vehicle as viewed obliquely from the rear and upward. 図９は、図４のIX−IX断面図である。9 is a cross-sectional view taken along the line IX-IX in FIG. 図１０は、本実施の形態に係る車両用バッテリパックの排気フードを一部破断させた斜視図である。FIG. 10 is a perspective view in which the exhaust hood of the vehicle battery pack according to the present embodiment is partially broken. 図１１は、本実施の形態に係る車両用バッテリパックに流路開閉部をケース内側の斜め上方からみた斜視図である。FIG. 11 is a perspective view of the flow path opening / closing portion of the vehicle battery pack according to the present embodiment as viewed obliquely from the inside of the case.

以下に、本発明の実施の形態に係る車両用バッテリパック（以下、バッテリパックと云う。）の詳細を図面に基づいて説明する。なお、本実施の形態では、説明の便宜を図るために、図中においてバッテリパックを搭載する車両の前後方向、左右方向、ならびに上下方向を矢印で示し、バッテリパックの前後方向、左右方向、ならびに上下方向として説明する。   Details of a vehicle battery pack (hereinafter referred to as a battery pack) according to an embodiment of the present invention will be described below with reference to the drawings. In the present embodiment, for convenience of explanation, the front-rear direction, the left-right direction, and the up-down direction of the vehicle on which the battery pack is mounted are indicated by arrows in the figure, and the front-rear direction, left-right direction, and It demonstrates as a vertical direction.

［搭載車両の概略構成］
先ず、本実施の形態のバッテリパックの構成の説明に先駆けて、バッテリパックを搭載する車両の概略構成について説明する。本実施の形態に係るバッテリパックは、例えば、ハイブリッド車もしくは電気自動車などの車両に搭載されている。図１に示すように、バッテリパック１は、車両１００の車両後部１０１におけるリヤシート１０２よりも車両前後方向後方の空間１０３に配置されている。なお、リヤシート１０２は、シートクッション１０２Ａと、シートバック１０２Ｂと、を備えている。したがって、より具体的には、バッテリパック２は、シートクッション１０２Ａの車両前後方向後方に配置されている。 [Schematic configuration of installed vehicle]
First, prior to the description of the configuration of the battery pack of the present embodiment, a schematic configuration of a vehicle on which the battery pack is mounted will be described. The battery pack according to the present embodiment is mounted on a vehicle such as a hybrid vehicle or an electric vehicle. As shown in FIG. 1, the battery pack 1 is disposed in a space 103 behind the rear seat 102 in the vehicle rear portion 101 of the vehicle 100 in the vehicle front-rear direction. The rear seat 102 includes a seat cushion 102A and a seat back 102B. Therefore, more specifically, the battery pack 2 is disposed behind the seat cushion 102A in the vehicle front-rear direction.

図２に示すように、車両後部１０１の車両左右（幅）方向の両側には、それぞれ車両前後方向に沿って延びる一対のリヤサイドメンバ１０４が設けられている。これらリヤサイドメンバ１０４の上には、リヤフロアパネル１０５が設けられている。図１に示すように、車両後部１０１の車両幅方向の両側には、一対の後輪１０６が配置されている。図１に示すように、リヤフロアパネル１０５の車両前後方向後方には、車両幅方向に沿ってリヤバンパメンバ１０７が設けられている。このリヤバンパメンバ１０７の車両前後方向前側には、リヤパネル１０８が設けられている。また、このリヤバンパメンバ１０７には、車両幅方向に沿ってリヤバンパ１０９が支持されている。   As shown in FIG. 2, a pair of rear side members 104 extending along the vehicle front-rear direction are provided on both sides of the vehicle rear portion 101 in the vehicle left-right (width) direction. A rear floor panel 105 is provided on the rear side members 104. As shown in FIG. 1, a pair of rear wheels 106 are disposed on both sides of the vehicle rear portion 101 in the vehicle width direction. As shown in FIG. 1, a rear bumper member 107 is provided behind the rear floor panel 105 in the vehicle longitudinal direction along the vehicle width direction. A rear panel 108 is provided on the front side of the rear bumper member 107 in the vehicle front-rear direction. The rear bumper member 107 supports a rear bumper 109 along the vehicle width direction.

図２に示すように、リヤフロアパネル１０５には、バッテリパック１の上部を挿入する略矩形状の開口部１１０が形成されている。特に、本実施の形態では、開口部１１０における車両前後方向後側に位置する一辺は、車両前後方向後方へ向けて凹形状に湾曲するように形成されている。開口部１１０におけるこの一辺は、開口部１１０内に配置されるバッテリパック１の後面部２Ｒとの間に、この後面部２Ｒの車両左右方向全体に亘って隙間が形成されるように設定されている。   As shown in FIG. 2, the rear floor panel 105 is formed with a substantially rectangular opening 110 into which the upper part of the battery pack 1 is inserted. In particular, in the present embodiment, one side of the opening 110 located on the rear side in the vehicle front-rear direction is formed to be curved in a concave shape toward the rear in the vehicle front-rear direction. The one side of the opening 110 is set such that a gap is formed between the rear surface portion 2R of the battery pack 1 disposed in the opening portion 110 and the entire vehicle lateral direction of the rear surface portion 2R. Yes.

図４に示すように、リヤフロアパネル１０５には、開口部１１０を取り囲む角筒状のカバーパネル１１１Ａと、このカバーパネル１１１Ａの上部開口部を閉塞する矩形板状のリッド１１１Ｂと、を備えるカバー部材１１１が取り付けられている。カバーパネル１１１Ａおよびリッド１１１Ｂは、荷室側の空間とバッテリパック１を配置する空間１０３（図１参照）とを区画している。なお、この空間１０３は、車外側から空気が導入できるようになっている。なお、図３は、リッド１１１Ｂをカバーパネル１１１Ａから取り外した状態を示している。また、図４に示すように、リヤフロアパネル１０５の下方には、バッテリパック１を支持するためのバッテリパック支持部材１１２が設けられている。   As shown in FIG. 4, the rear floor panel 105 includes a rectangular tubular cover panel 111A that surrounds the opening 110, and a rectangular plate-shaped lid 111B that closes the upper opening of the cover panel 111A. 111 is attached. The cover panel 111A and the lid 111B partition the space on the cargo compartment side and the space 103 (see FIG. 1) in which the battery pack 1 is disposed. In addition, this space 103 can introduce air from the vehicle outer side. FIG. 3 shows a state in which the lid 111B is removed from the cover panel 111A. As shown in FIG. 4, a battery pack support member 112 for supporting the battery pack 1 is provided below the rear floor panel 105.

［バッテリパック］
図５および図６に示すように、バッテリパック１は、略直方体形状のケース２と、このケース２内に収納された高電圧を発生する複数のバッテリ３（図５においてバッテリ３のモジュールを示す。）と、ケース２の上に配置された略直方体形状のエアクリーナ４と、ケース２内に設けられた冷却ファン５と、冷却ファン５からの冷却風をケース２の外側に案内する冷却ファン用ダクト６と、ケース２の側面に設けられた排気フード７と、を備える。 [Battery pack]
As shown in FIGS. 5 and 6, the battery pack 1 includes a substantially rectangular parallelepiped case 2 and a plurality of batteries 3 (in FIG. 5, a module of the battery 3) that generates a high voltage. .), A substantially rectangular parallelepiped air cleaner 4 disposed on the case 2, a cooling fan 5 provided in the case 2, and a cooling fan for guiding cooling air from the cooling fan 5 to the outside of the case 2 A duct 6 and an exhaust hood 7 provided on a side surface of the case 2 are provided.

（ケース）
ケース２は、電気絶縁性を有する材料で形成された略直方体形状の剛性を有する筐体である。ケース２は、上部分であるケース上部２１と、下部分であるケース下部２２と、からなる。なお、ケース上部２１とケース下部２２との接合部には、ケース２の側部を周回するようにフランジ部２３が設けられている。ケース上部２１の上面には、図示しない連通孔が形成され、ケース上部２１の後面には排出口２５が形成されている。なお、図６および図７に示すように、ケース上部２１の上面に形成された連通孔は、ケース２内に配置された空気案内路２０が連結されている。この空気案内路２０は、エアクリーナ４から導入した冷却風をバッテリ３の下まで案内するようになっている。図４および図８に示すように、フランジ部２３は、バッテリパック１を車両に搭載する際に、バッテリパック支持部材１１２へ支持、取り付けに供される。 (Case)
The case 2 is a housing having a substantially rectangular parallelepiped rigidity formed of a material having electrical insulation. The case 2 includes a case upper portion 21 that is an upper portion and a case lower portion 22 that is a lower portion. A flange portion 23 is provided at a joint portion between the case upper portion 21 and the case lower portion 22 so as to go around the side portion of the case 2. A communication hole (not shown) is formed on the upper surface of the case upper portion 21, and a discharge port 25 is formed on the rear surface of the case upper portion 21. As shown in FIGS. 6 and 7, the air guide path 20 disposed in the case 2 is connected to the communication hole formed in the upper surface of the case upper portion 21. The air guide path 20 guides the cooling air introduced from the air cleaner 4 to the bottom of the battery 3. As shown in FIGS. 4 and 8, the flange portion 23 is supported and attached to the battery pack support member 112 when the battery pack 1 is mounted on the vehicle.

（エアクリーナ）
エアクリーナ４は、ケース上部２１の上に搭載されている。図２および図３に示すように、エアクリーナ４は、車両搭載したときの車両前後方向前側の側面に吸入口２４が設けられている。図６に示すように、このエアクリーナ４は、内部にフィルタエレメント４Ａが収納されている。エアクリーナ４は、ケース上部２１の上面に形成された図示しない上記の連通孔に連通するように接続されている。 (Air cleaner)
The air cleaner 4 is mounted on the case upper part 21. As shown in FIGS. 2 and 3, the air cleaner 4 is provided with a suction port 24 on the front side surface in the vehicle front-rear direction when the vehicle is mounted. As shown in FIG. 6, the air cleaner 4 houses a filter element 4A therein. The air cleaner 4 is connected so as to communicate with the communication hole (not shown) formed on the upper surface of the case upper portion 21.

（冷却ファン）
図５〜図７に示すように、冷却ファン５は、ケース上部２１内の上部に配置されている。冷却ファン５としては、例えばシロッコファンを用いることができる。図６に示すように、この冷却ファン５は、下面にバッテリ３の周りを通過した冷却風Ｓ１風を集める吸引口５Ａを有する。そして、図６に示すように、冷却ファン５は、後側に吐出口５Ｂを有する。なお、図５に示すように、ケース上部２１の後側の側面（後面部２Ｒ）には、冷却ファン５の吐出口５Ｂと対向する位置に、排出口２５が形成されている。そして、図５および図６に示すように、この吐出口５Ｂと排出口２５とは、冷却ファン用ダクト６で連通するように連結されている。 (cooling fan)
As shown in FIGS. 5 to 7, the cooling fan 5 is disposed in the upper part of the case upper part 21. For example, a sirocco fan can be used as the cooling fan 5. As shown in FIG. 6, the cooling fan 5 has a suction port 5 </ b> A for collecting the cooling air S <b> 1 that has passed around the battery 3 on the lower surface. And as shown in FIG. 6, the cooling fan 5 has the discharge outlet 5B in the rear side. As shown in FIG. 5, a discharge port 25 is formed on the rear side surface (rear surface portion 2 </ b> R) of the case upper portion 21 at a position facing the discharge port 5 </ b> B of the cooling fan 5. As shown in FIGS. 5 and 6, the discharge port 5 </ b> B and the discharge port 25 are connected to communicate with each other through a cooling fan duct 6.

（冷却風排出流路）
特に、図５および図６に示すように、本実施の形態に係るバッテリパック１では、ケース上部２１に形成された排出口２５の外側周縁に沿ってこの排出口２５の近傍を囲むように排気フード７が設けられている。そして、図９および図１０に示すように、冷却ファン用ダクト６と排気フード７とは、冷却風排出流路２７を構成している。また、この冷却風排出流路２７内には、冷却ファン５から送風が行われたときにこの冷却風排出流路２７を開放し、かつ冷却ファン５からの送風が停止されているときに冷却風排出流路２７を閉塞する流路開閉部２８が設けられている。 (Cooling air discharge flow path)
In particular, as shown in FIGS. 5 and 6, in the battery pack 1 according to the present embodiment, the exhaust is performed so as to surround the vicinity of the discharge port 25 along the outer peripheral edge of the discharge port 25 formed in the case upper portion 21. A hood 7 is provided. As shown in FIGS. 9 and 10, the cooling fan duct 6 and the exhaust hood 7 constitute a cooling air discharge passage 27. In addition, the cooling air discharge passage 27 is opened when the cooling fan 5 blows air, and the cooling air discharge passage 27 is opened and the cooling fan 5 stops cooling. A flow path opening / closing section 28 that closes the wind discharge flow path 27 is provided.

（流路開閉部）
本実施の形態では、流路開閉部２８は、排出口２５と略同じ位置に設けられている。図１１に示すように、この流路開閉部２８は、車両水平方向（左右方向）に隣接する弁体２９の対が上下に２対並ぶように４つの弁体２９を備えている。それぞれの弁体２９は、上縁部２９Ａを中心に揺動可能となるように、流路開閉部２８側に係止されている。これら弁体２９は、冷却ファン５から送風された際に、その風圧により弁体２９がケース２の外側方向（後方）へ向けて回動するようになっている。このため、図１０に示すように、冷却風（温風）Ｓ２は、排出口２５および排気フード７を介してケース２の外部へ排出される。一方、これら弁体２９は、冷却ファン５の作動が停止すると、冷却風の送風が停止するため、自重により流路開閉部２８を閉じる位置に戻るようになっている。この状態では、冷却風は、流路開閉部２８により排出口２５からケース２の外部へ排出されないように設定されている。 (Flow path opening / closing part)
In the present embodiment, the flow path opening / closing part 28 is provided at substantially the same position as the discharge port 25. As shown in FIG. 11, the flow path opening / closing portion 28 includes four valve bodies 29 so that two pairs of valve bodies 29 adjacent in the horizontal direction (left-right direction) are aligned vertically. Each valve element 29 is locked to the flow path opening / closing part 28 side so as to be swingable about the upper edge part 29A. When these valve bodies 29 are blown from the cooling fan 5, the valve bodies 29 are rotated toward the outer side (rear) of the case 2 by the wind pressure. For this reason, as shown in FIG. 10, the cooling air (warm air) S <b> 2 is discharged to the outside of the case 2 through the discharge port 25 and the exhaust hood 7. On the other hand, when the operation of the cooling fan 5 stops, these valve bodies 29 return to a position where the flow path opening / closing portion 28 is closed by its own weight because the blowing of cooling air is stopped. In this state, the cooling air is set so as not to be discharged from the discharge port 25 to the outside of the case 2 by the flow path opening / closing part 28.

流路開閉部２８では、これら複数の弁体２９の全部が同時に閉じたときに、冷却風排出流路２８を全体的に閉塞可能とするようになっている。そして、それぞれの弁体２９は、冷却風の圧力に応じて、冷却風排出流路２７を、部分的に開放と閉塞を独自に行うようになっている。なお、本実施の形態では、複数の弁体２９は、同形状で同じ重さに設定しているため、複数の弁体２９の開閉動作は冷却風に応じて略同時に行うようになっている。   In the flow path opening / closing section 28, the cooling air discharge flow path 28 can be totally closed when all of the plurality of valve bodies 29 are simultaneously closed. Each valve body 29 is designed to partially open and close the cooling air discharge passage 27 in accordance with the pressure of the cooling air. In the present embodiment, since the plurality of valve bodies 29 are set to have the same shape and the same weight, the opening and closing operations of the plurality of valve bodies 29 are performed substantially simultaneously according to the cooling air. .

（排気フード）
図１０および図１１に示すように、排気フード７は、ケース上部２１に形成した排出口２５の外側周縁に沿って排出口２５の近傍のみを囲むように排出口２５から外側へ向けた突出長さが短く設定されている。排気フード７は、その突出長さが短いながらも、排出口２５から側方（車両搭載時の車両前後方向後方）へ直線的に突出するように形成されている。図１０に示すように、排気フード７における、上側に配置されたフード上側壁部３０の先端部３０Ａは、下側（車両搭載時の車両上下方向）に配置されたフード下側壁部３１の先端部３１Ａよりも側方（後方）へ突出している。排気フード７の両側（左右方向の両側）には、フード側壁部３２が設けられている。そして、排気フード７の下流端部には、冷却風（温風）を側方（後方）へ吐出させる空気吐出口３３が形成されている。フード下側壁部３１の先端部３１Ａには、空気吐出口３３の上縁部、すなわちフード上側壁部３０の先端部３０Ａに向かって立ち上がる立壁部３４が形成されている。 (Exhaust hood)
As shown in FIGS. 10 and 11, the exhaust hood 7 protrudes outward from the discharge port 25 so as to surround only the vicinity of the discharge port 25 along the outer peripheral edge of the discharge port 25 formed in the upper portion 21 of the case. Is set short. The exhaust hood 7 is formed so as to project linearly from the discharge port 25 to the side (rear in the vehicle front-rear direction when mounted on the vehicle), although the projecting length is short. As shown in FIG. 10, in the exhaust hood 7, the front end 30 </ b> A of the hood upper side wall portion 30 disposed on the upper side is the front end of the hood lower side wall portion 31 disposed on the lower side (the vehicle vertical direction when mounted on the vehicle). It protrudes to the side (rear) from the portion 31A. Hood side walls 32 are provided on both sides of the exhaust hood 7 (both sides in the left-right direction). An air discharge port 33 for discharging cooling air (warm air) to the side (rear) is formed at the downstream end of the exhaust hood 7. A standing wall portion 34 that rises toward the upper edge portion of the air discharge port 33, that is, the distal end portion 30 </ b> A of the hood upper side wall portion 30, is formed at the distal end portion 31 </ b> A of the hood lower side wall portion 31.

図１１に示すように、本実施の形態では、排気フード７の上流端部３５内に上記流路開閉部２８が設けられている。この上流端部３５の外周面における上側面および下側面には、外側方向（筒体状の排気フード７の中心軸から遠ざかる方向）に突出する係合用爪部３６と係止部３７とが形成されている。これら係合用爪部３６と係止部３７とは、対をなし、排気フード７の前後方向に所定間隔を隔てて突設されている。そして、係合用爪部３６と係止部３７の対は、排気フード７の上流端部３５の外周面の上側面と下側面のそれぞれに左右方向に沿って２対ずつ設けられている。図１０に示すように、排気フード７は、ケース２のケース上部２１に形成された排出口２５に対して、係合用爪部３６と係止部３７とで、この排出口２５の周縁部を挟むように取り付けられている。係合用爪部３６には、排気フード７を、上流端部３５側からケース上部２１の排出口２５に挿入したときに、排出口２５の開口縁がスライドしながら乗り上げる係合用斜面３６Ａが形成されている。排出口２５の開口縁は、係合用斜面３６Ａを相対的に乗り越えたときに係合用爪部３６と係止部３７との間に配置されて固定される。なお、図１０に示すように、本実施の形態では、係止部３７と排出口２５の開口縁部との間にパッキン３８が介在されるようになっている。   As shown in FIG. 11, in the present embodiment, the flow path opening / closing portion 28 is provided in the upstream end portion 35 of the exhaust hood 7. On the upper side surface and the lower side surface of the outer peripheral surface of the upstream end portion 35, an engaging claw portion 36 and a locking portion 37 that protrude outward (in a direction away from the central axis of the tubular exhaust hood 7) are formed. Has been. The engaging claw portion 36 and the locking portion 37 are paired and project from the exhaust hood 7 in the front-rear direction at a predetermined interval. Two pairs of the engaging claw portion 36 and the locking portion 37 are provided along the left-right direction on each of the upper side surface and the lower side surface of the outer peripheral surface of the upstream end portion 35 of the exhaust hood 7. As shown in FIG. 10, the exhaust hood 7 has an engagement claw portion 36 and a locking portion 37, and a peripheral portion of the discharge port 25 with respect to the discharge port 25 formed in the case upper portion 21 of the case 2. It is attached to pinch. The engaging claw portion 36 is formed with an engaging slope 36A that climbs while the opening edge of the discharge port 25 slides when the exhaust hood 7 is inserted into the discharge port 25 of the case upper portion 21 from the upstream end 35 side. ing. The opening edge of the discharge port 25 is disposed and fixed between the engaging claw portion 36 and the engaging portion 37 when the engaging slope 36A is relatively moved over. As shown in FIG. 10, in this embodiment, a packing 38 is interposed between the locking portion 37 and the opening edge of the discharge port 25.

［バッテリパックの動作、作用、および効果］
以下、バッテリパック１自体の動作、作用、および効果について説明する。図５および図６に示すように、バッテリパック１内のバッテリ３の温度が閾値以上になった場合、冷却ファン５が回転する。冷却ファン５の回転に伴い、バッテリパック１内でバッテリ３の周りを通過した冷却風（矢印Ｓ１）が冷却ファン５の吸引口５Ａから吸引され、冷却ファン用ダクト６を介して排出口２５から排出される（矢印Ｓ２）。このとき、図１０に示すように、排気フード７の上流端部に設けられた流路開閉部２８の複数の弁体２９は冷却ファン５側から風圧を受けて、上縁部２９Ａを中心にして、例えば図中一点鎖線で示す位置まで揺動して冷却風（矢印Ｓ３）を通過させる。図５および図６に示すように、冷却ファン５が回転した場合、エアクリーナ４の吸入口２４からバッテリパック１の外部の空気（矢印Ｓ４）が導入される。図６および図７に示すように、バッテリパック１内に導入された冷却風（Ｓ５）は、空気案内路２０に導かれてバッテリ３の下まで案内される。エアクリーナ４の吸入口２４はバッテリパック１の上部に配置されているため、このバッテリパック１が車両に搭載された場合に、吸入口２４まで雨水や洗浄水や小昆虫などの浸入が及びにくいという利点がある。 [Operation, operation, and effect of battery pack]
Hereinafter, the operation, action, and effect of the battery pack 1 itself will be described. As shown in FIGS. 5 and 6, when the temperature of the battery 3 in the battery pack 1 becomes equal to or higher than the threshold value, the cooling fan 5 rotates. With the rotation of the cooling fan 5, the cooling air (arrow S <b> 1) that has passed around the battery 3 in the battery pack 1 is sucked from the suction port 5 </ b> A of the cooling fan 5 and is discharged from the discharge port 25 through the cooling fan duct 6. It is discharged (arrow S2). At this time, as shown in FIG. 10, the plurality of valve bodies 29 of the flow path opening / closing section 28 provided at the upstream end of the exhaust hood 7 receive wind pressure from the cooling fan 5 side, and the upper edge 29A is the center. Thus, for example, the cooling air (arrow S3) is allowed to pass through by swinging to the position indicated by the alternate long and short dash line in the figure. As shown in FIGS. 5 and 6, when the cooling fan 5 rotates, air outside the battery pack 1 (arrow S <b> 4) is introduced from the suction port 24 of the air cleaner 4. As shown in FIGS. 6 and 7, the cooling air (S <b> 5) introduced into the battery pack 1 is guided to the air guide path 20 and guided to the bottom of the battery 3. Since the suction port 24 of the air cleaner 4 is disposed on the upper part of the battery pack 1, it is difficult for rainwater, washing water, small insects, and the like to enter the suction port 24 when the battery pack 1 is mounted on a vehicle. There are advantages.

上記の構成を有するバッテリパック１は、冷却ファン５の回転時に、万一、一部の弁体２９が作動または揺動しなかった場合であっても、他の弁体２９への風量が増し、他の弁体２９を確実に開くことができる。また、流路開閉部２８に複数の弁体２９を並置したことにより、それぞれの弁体２９を小型化あるいは軽量化できる。このため、流路開閉部２８では、冷却ファン５の回転時の風圧が小さい場合であっても、風圧によって複数の弁体２９のうち少なくともいずれかを確実に揺動させることができる。これによって、バッテリパック１内の冷却風を、流路開閉部２８を介して外部へと吐き出すことができ、バッテリを確実に冷却して出力性能を高めることができる。さらに、本実施の形態に係るバッテリパック１では、冷却風を排出していない場合に、流路開閉部２８の弁体が閉じるため、雨水や洗浄水や小昆虫などが浸入することを防止できる。   In the battery pack 1 having the above-described configuration, even if some of the valve bodies 29 do not operate or swing during the rotation of the cooling fan 5, the air volume to the other valve bodies 29 increases. The other valve body 29 can be opened reliably. Further, since the plurality of valve bodies 29 are juxtaposed to the flow path opening / closing portion 28, each valve body 29 can be reduced in size or weight. For this reason, in the flow path opening / closing part 28, even when the wind pressure during rotation of the cooling fan 5 is small, at least one of the plurality of valve bodies 29 can be reliably swung by the wind pressure. As a result, the cooling air in the battery pack 1 can be discharged to the outside through the flow path opening / closing part 28, and the battery can be reliably cooled to improve the output performance. Furthermore, in the battery pack 1 according to the present embodiment, when the cooling air is not discharged, the valve body of the flow path opening / closing unit 28 is closed, so that it is possible to prevent rainwater, washing water, small insects, and the like from entering. .

本実施の形態に係るバッテリパック１では、排気フード７を直線的に突出させ、その全長が短いため、排気フード７による圧力損失が小さく、通気抵抗を低くできる。これによって、冷却ファン５の低出力化が可能になり、冷却ファン５の消費電力を少なくしてもバッテリ３に十分な冷却風を流し込むことができる。また、排気フード７のフード下側壁部３１の先端部３１Ａに立壁部３４を形成したことにより、このバッテリパック１を車両の下部に搭載した際に、雨水や洗浄水や小昆虫などが空気吐出口３３へと入り込むことを抑制できる。   In the battery pack 1 according to the present embodiment, the exhaust hood 7 is projected linearly and its entire length is short. Therefore, the pressure loss due to the exhaust hood 7 is small, and the ventilation resistance can be reduced. As a result, the output of the cooling fan 5 can be reduced, and sufficient cooling air can be poured into the battery 3 even if the power consumption of the cooling fan 5 is reduced. Further, since the standing wall portion 34 is formed at the tip portion 31A of the hood lower side wall portion 31 of the exhaust hood 7, when the battery pack 1 is mounted on the lower portion of the vehicle, rain water, washing water, small insects, etc. The entry into the outlet 33 can be suppressed.

本実施の形態に係るバッテリパック１では、係合用爪部３６と係止部３７とで、ケース２（ケース上部２１）の排出口２５の周縁を挟むだけでよいため、排気フード７をケース２の排出口２５に簡単に取り付けることができる。また、係合用爪部３６と係止部３７とでケース２の排出口２５の周縁部を挟むことにより、排気フード７のがたつきの発生を防止できる。このため、本実施の形態に係るバッテリパック１では、排気フード７をケース２へ安定して固定でき、排気フード７の取付性を高めることができる。   In the battery pack 1 according to the present embodiment, the exhaust claw portion 36 and the locking portion 37 need only sandwich the periphery of the discharge port 25 of the case 2 (case upper portion 21). It can be easily attached to the discharge port 25. Further, when the peripheral portion of the discharge port 25 of the case 2 is sandwiched between the engaging claw portion 36 and the engaging portion 37, the occurrence of rattling of the exhaust hood 7 can be prevented. For this reason, in the battery pack 1 according to the present embodiment, the exhaust hood 7 can be stably fixed to the case 2 and the attachment of the exhaust hood 7 can be improved.

［バッテリパックの車両搭載構造］
次に、本実施の形態に係るバッテリパック１の車両搭載構造について説明する。図１に示すように、バッテリパック１は、車両後部１０１のリヤフロアパネル１０５に形成した開口部１１０を覆うカバー部材１１１内に、ケース上部２１が下方から挿入された状態で保持されている。すなわち、図１および図４に示すように、バッテリパック１のケース２に設けられたフランジ部２３は、バッテリパック支持部材１１２に搭載された状態で固定されている。 [Battery pack mounting structure]
Next, the vehicle mounting structure of the battery pack 1 according to the present embodiment will be described. As shown in FIG. 1, the battery pack 1 is held in a cover member 111 that covers an opening 110 formed in the rear floor panel 105 of the vehicle rear portion 101 with a case upper portion 21 inserted from below. That is, as shown in FIGS. 1 and 4, the flange portion 23 provided in the case 2 of the battery pack 1 is fixed in a state of being mounted on the battery pack support member 112.

図６に示すように、バッテリパック１の吸入口２４は、カバー部材１１１の天井部としてのリッド１１１Ｂの下面と、バッテリパック１（ケース上部２１）の頂面とで挟まれた天井面側隙間１０３Ａに配置されている。このため、エアクリーナ４は、バッテリパック１が搭載された天井面側隙間１０３Ａから空気を取り入れるようになっている。また、バッテリパック１の排気フード７は、カバー部材１１１のカバーパネル１１１Ａの内面と、ケース２（ケース上部２１）の外側面（後面部２Ｒ）と、で挟まれた周面側隙間１０３Ｂ内に配置されている。   As shown in FIG. 6, the suction port 24 of the battery pack 1 is a ceiling surface side gap sandwiched between the lower surface of the lid 111 </ b> B as the ceiling portion of the cover member 111 and the top surface of the battery pack 1 (case upper portion 21). 103A. For this reason, the air cleaner 4 takes in air from the ceiling surface side gap 103A on which the battery pack 1 is mounted. Further, the exhaust hood 7 of the battery pack 1 is in a circumferential surface side gap 103B sandwiched between the inner surface of the cover panel 111A of the cover member 111 and the outer surface (rear surface portion 2R) of the case 2 (case upper portion 21). Has been placed.

上記のバッテリパック１の搭載構造においては、上述したバッテリパック１の作用・効果に加えて、以下に説明するような作用・効果を奏する。すなわち、一般に、リヤフロアパネル１０５は、車室のフロアに比べて高い位置に設けられている。したがって、上記の搭載構造では、バッテリパック１におけるケース下部２２を、リヤフロアパネル１０５の下方の大きな空間を利用して配置している。このため、本実施の形態では、全体として容量の大きくサイズが大きなバッテリパック１を、リヤフロアパネル１０５の上下の空間に効率的に搭載できる。   In the mounting structure of the battery pack 1 described above, in addition to the operations and effects of the battery pack 1 described above, there are operations and effects as described below. That is, in general, the rear floor panel 105 is provided at a higher position than the floor of the passenger compartment. Therefore, in the mounting structure described above, the case lower portion 22 in the battery pack 1 is arranged using a large space below the rear floor panel 105. Therefore, in the present embodiment, battery pack 1 having a large capacity and a large size as a whole can be efficiently mounted in the space above and below rear floor panel 105.

また、本実施の形態に係るバッテリパック１は、排気フード７が排出口２５の近傍を囲む程度の短い長さであるため、ケース２に排気フード７を組み付けた状態で、バッテリパック１を車体の下方からリヤフロアパネル１０５の開口部１１０へ容易に挿入できる。本実施の形態では、排気フード７およびバッテリパック１が車体部品（カバー部材１１１など）と干渉することを防止できる。このため、排気フード７およびバッテリパック１を同時に車体に組み付けることができる。したがって、本実施の形態に係るバッテリパック１では、組付性を高めることができる。   In addition, since the battery pack 1 according to the present embodiment has a short length so that the exhaust hood 7 surrounds the vicinity of the discharge port 25, the battery pack 1 is mounted on the vehicle body with the exhaust hood 7 assembled to the case 2. Can be easily inserted into the opening 110 of the rear floor panel 105 from below. In the present embodiment, it is possible to prevent the exhaust hood 7 and the battery pack 1 from interfering with vehicle body parts (such as the cover member 111). For this reason, the exhaust hood 7 and the battery pack 1 can be assembled to the vehicle body at the same time. Therefore, in the battery pack 1 according to the present embodiment, the assemblability can be improved.

また、本実施の形態では、排出口２５または排気フード７や吸入口２４がリヤフロアパネル１０５よりも高い位置で、かつバッテリパック１とカバー部材１１１との狭い隙間（天井面側隙間１０３Ａ、周面側隙間１０３Ｂ）に配置されている。このため、車両１００を雨天時に走行させたり、高圧洗浄を行ったりした場合であっても、雨水や洗浄水（埃などを含む）などが排出口２５や排気フード７や吸入口２４へと浸入し難くなる効果がある。したがって、本実施の形態では、雨水や洗浄水などがバッテリパック１内へ入り込むことを防止できる。これによって、バッテリパック１内の結線部（例えば、バスバーなど）の腐食や錆の発生を抑えることができ、バッテリ３の出力性能が低下することを抑制できる。   Further, in the present embodiment, the exhaust port 25 or the exhaust hood 7 and the intake port 24 are at a position higher than the rear floor panel 105, and a narrow gap between the battery pack 1 and the cover member 111 (the ceiling surface side gap 103A, the circumferential surface). It is arranged in the side gap 103B). For this reason, even when the vehicle 100 is run in the rain or when high-pressure washing is performed, rainwater, washing water (including dust) enters the discharge port 25, the exhaust hood 7, and the suction port 24. There is an effect that becomes difficult. Therefore, in the present embodiment, it is possible to prevent rainwater, washing water and the like from entering the battery pack 1. As a result, it is possible to suppress the occurrence of corrosion and rust at the connection portion (for example, a bus bar) in the battery pack 1, and it is possible to suppress the output performance of the battery 3 from being lowered.

図１１に示すように、上記構造では、排気フード７の上流端部３５内に流路開閉部２８を設けて、この流路開閉部２８に冷却ファン５の回転による風圧により揺動する弁体２９を取り付けている。このため、冷却ファン５の回転時には、冷却ファン５で発生された冷却風の風圧で弁体２９が揺動して流路開閉部２８を開き、冷却ファン５の停止時には弁体２９の自重で流路開閉部２８を閉じることができる。バッテリ３の温度が閾値以下になった場合には、冷却ファン５の回転が停止して、バッテリパック１内での冷却風の流れが止まる。このため、本実施の形態では、冷却ファン５が停止時に、バッテリパック１内の冷却風が弁体２９によって排気フード内と流れて外部に吐き出されることを抑制でき、バッテリパック内の温度が低下することを防止できる。これによって、冷却ファン５が停止時において、バッテリパックの温度を速やかに高めることができる。このように、本実施の形態に係るバッテリパック１を車両１００に搭載することにより、バッテリ３の温度を適温に保つことができ、バッテリ３の出力性能を向上させることができる。   As shown in FIG. 11, in the structure described above, a flow path opening / closing part 28 is provided in the upstream end portion 35 of the exhaust hood 7, and the valve body swings in the flow path opening / closing part 28 due to the wind pressure due to the rotation of the cooling fan 5. 29 is attached. For this reason, when the cooling fan 5 rotates, the valve body 29 swings due to the wind pressure of the cooling air generated by the cooling fan 5 to open the flow path opening / closing part 28, and when the cooling fan 5 stops, the valve body 29 has its own weight. The channel opening / closing part 28 can be closed. When the temperature of the battery 3 becomes equal to or lower than the threshold value, the cooling fan 5 stops rotating and the flow of cooling air in the battery pack 1 stops. For this reason, in this Embodiment, when the cooling fan 5 stops, it can suppress that the cooling air in the battery pack 1 flows into the exhaust hood by the valve body 29, and is discharged | emitted outside, and the temperature in a battery pack falls. Can be prevented. Thereby, the temperature of the battery pack can be quickly raised when the cooling fan 5 is stopped. Thus, by mounting the battery pack 1 according to the present embodiment on the vehicle 100, the temperature of the battery 3 can be kept at an appropriate temperature, and the output performance of the battery 3 can be improved.

さらに、本実施の形態では、バッテリ３の温度が閾値以下になり冷却ファン５が停止した状態で、車両１００が渋滞や信号待ちなどで一時停止したとしても、弁体２９で排気フード７の流路開閉部２８を閉鎖することができる。このため、エンジンの排気ガスがリヤフロアパネル１０５の下方から排気フード７内へと流れ込んだとしても、弁体２９で排気ガスがバッテリパック１内に流れ込むことを遮断できる。また、上述のように、本実施の形態に係るバッテリパック１では、吸入口２４を排気フード７（または、排出口２５）よりも高い位置に配置させている。加えて、吸入口２４がカバー部材１１１のリッド１１１Ｂ下面とバッテリパック１の頂面との間の天井面側隙間１０３Ａで開口しているため、排気ガスが吸入口２４に侵入することを極力防止できる。これによって、排気ガスに含まれる水分や他の物質がバッテリパック１内の結線部（例えば、バスバーなど）に触れることを防止できる。このため、本実施の形態に係るバッテリパック１およびその搭載構造によれば、結線部の寿命を向上させることができ、バッテリ３の出力性能を高めることができる。   Furthermore, in the present embodiment, even if the vehicle 100 is temporarily stopped due to traffic jam or waiting for a signal while the temperature of the battery 3 is below the threshold value and the cooling fan 5 is stopped, the flow of the exhaust hood 7 is stopped by the valve element 29. The road opening / closing part 28 can be closed. For this reason, even if the exhaust gas of the engine flows into the exhaust hood 7 from below the rear floor panel 105, the valve body 29 can block the exhaust gas from flowing into the battery pack 1. Further, as described above, in the battery pack 1 according to the present embodiment, the suction port 24 is arranged at a position higher than the exhaust hood 7 (or the discharge port 25). In addition, since the suction port 24 opens at the ceiling surface side gap 103A between the lower surface of the lid 111B of the cover member 111 and the top surface of the battery pack 1, it is possible to prevent the exhaust gas from entering the suction port 24 as much as possible. it can. As a result, it is possible to prevent moisture and other substances contained in the exhaust gas from touching the connection portion (for example, a bus bar) in the battery pack 1. For this reason, according to the battery pack 1 and its mounting structure according to the present embodiment, the life of the connection portion can be improved, and the output performance of the battery 3 can be improved.

さらに、本実施の形態では、排気フード７の空気吐出口３３をカバー部材１１１（カバーパネル１１１Ａ）の内周面と対向させるため、雨水や洗浄水や水分を含んだ埃が排気フードの空気吐出口３３へ直接入り込むことを防止できる。また、バッテリパック１において、排気フード７の空気吐出口３３の上縁部に形成されたフード上側壁部３０の先端部３０Ａがフード下側壁部３１の先端部３１Ａよりも側方に突出している。このため、フード上側壁部３０の先端部３０Ａとカバーパネル１１１Ａの内面との間が狭くなっている。したがって、空気吐出口３３から吐き出された冷却風（温風）が排気フード７のフード上側壁部３０とカバーパネル１１１Ａとの間の隙間を通過し難くなっている。このため、この搭載構造では、排気フード７から吐き出された冷却風（温風）が、バッテリパック１の吸入口２４へと流れて、再度、吸入口からバッテリパック内へ流れ込むことを抑制できる。   Further, in the present embodiment, since the air discharge port 33 of the exhaust hood 7 is opposed to the inner peripheral surface of the cover member 111 (cover panel 111A), dust containing rain water, washing water, and moisture is discharged from the exhaust hood. Direct entry into the outlet 33 can be prevented. Further, in the battery pack 1, the front end portion 30 </ b> A of the hood upper side wall portion 30 formed at the upper edge portion of the air discharge port 33 of the exhaust hood 7 protrudes laterally from the front end portion 31 </ b> A of the hood lower side wall portion 31. . For this reason, the space between the front end portion 30A of the hood upper side wall portion 30 and the inner surface of the cover panel 111A is narrow. Accordingly, it is difficult for the cooling air (warm air) discharged from the air discharge port 33 to pass through the gap between the hood upper side wall portion 30 of the exhaust hood 7 and the cover panel 111A. For this reason, in this mounting structure, it is possible to prevent the cooling air (warm air) discharged from the exhaust hood 7 from flowing into the suction port 24 of the battery pack 1 and flowing into the battery pack again from the suction port.

本実施の形態に係るバッテリパック１では、リヤフロアパネル１０５の下方側に冷却風を排出するため、バッテリパック１内で熱を吸収して暖められた冷却風を荷室に排出することなく車外へ排出することができる。このため、本実施の形態に係るバッテリパック１では、冷却性能を向上できる。   In the battery pack 1 according to the present embodiment, the cooling air is discharged to the lower side of the rear floor panel 105. Therefore, the cooling air heated by absorbing heat in the battery pack 1 is discharged outside the vehicle without discharging it to the luggage compartment. Can be discharged. For this reason, in the battery pack 1 according to the present embodiment, the cooling performance can be improved.

（その他の実施の形態）
以上、実施の形態について説明したが、この実施の形態の開示の一部をなす論述および図面はこの発明を限定するものであると理解すべきではない。この開示から当業者には様々な代替実施の形態、実施例および運用技術が明らかとなろう。本発明に係る車両用バッテリパック１は、上記した車両搭載構造としたときに顕著な効果を奏するが、上記した車両搭載構造に限定されるものではない。 (Other embodiments)
Although the embodiment has been described above, it should not be understood that the description and the drawings constituting a part of the disclosure of the embodiment limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art. The vehicle battery pack 1 according to the present invention has a remarkable effect when the above-described vehicle mounting structure is used, but is not limited to the above-described vehicle mounting structure.

１ バッテリパック
２ ケース
３ バッテリ
４ エアクリーナ
５ 冷却ファン
５Ａ 吸引口
６ 冷却ファン用ダクト
７ 排気フード
２０ 空気案内路
２１ ケース上部
２２ ケース下部
２４ 吸入口
２５ 排出口
２７ 冷却風排出流路
２８ 流路開閉部
２９ 弁体
２９Ａ 上縁部
３０ フード上側壁部
３０Ａ 先端部
３１ フード下側壁部
３１Ａ 先端部
３３ 空気吐出口
３４ 立壁部
３５ 上流端部
３６ 係合用爪部
３６Ａ 係合用斜面
３７ 係止部
１００ 車両
１０１ 車両後部
１０３ 空間
１０３Ａ 天井面側隙間
１０３Ｂ 周面側隙間
１０５ リヤフロアパネル
１１０ 開口部
１１１ カバー部材
１１１Ａ カバーパネル
１１１Ｂ リッド DESCRIPTION OF SYMBOLS 1 Battery pack 2 Case 3 Battery 4 Air cleaner 5 Cooling fan 5A Suction port 6 Cooling fan duct 7 Exhaust hood 20 Air guide way 21 Case upper part 22 Case lower part 24 Suction port 25 Outlet 27 Outlet 27 Cooling air discharge channel 28 Channel opening / closing part DESCRIPTION OF SYMBOLS 29 Valve body 29A Upper edge part 30 Hood upper side wall part 30A Front end part 31 Hood lower side wall part 31A Front end part 33 Air discharge port 34 Standing wall part 35 Upstream end part 36 Engagement claw part 36A Engagement slope 37 Locking part 100 Vehicle 101 Vehicle rear portion 103 Space 103A Ceiling surface side clearance 103B Perimeter surface side clearance 105 Rear floor panel 110 Opening portion 111 Cover member 111A Cover panel 111B Lid

Claims (6)

内部に冷却風を導入する吸入口および外部へ冷却風を排出する排出口が形成されたケース内に、バッテリと、該バッテリに冷却風を送る冷却ファンと、を収容した車両用バッテリパックにおいて、
前記吸入口が車両搭載時の車両上下方向の上部に配置され、前記排出口が前記ケースの側部に配置され、
前記冷却ファンと前記排出口とが冷却ファン用ダクトで連通され、
前記排出口の外側周縁に沿って当該排出口の近傍を囲むように排気フードが設けられ、
前記冷却ファン用ダクトと前記排気フードとでなる冷却風排出流路内に、前記冷却ファンから送風されたときに前記冷却風排出流路を開放し、かつ前記冷却ファンからの送風が停止されているときに前記冷却風排出流路を閉塞する弁体を取り付けた流路開閉部が設けられている
ことを特徴とする車両用バッテリパック。 In a vehicle battery pack that houses a battery and a cooling fan that sends cooling air to the battery in a case in which a suction port for introducing cooling air inside and a discharge port for discharging cooling air to the outside are formed.
The suction port is disposed at an upper part in the vehicle vertical direction when mounted on a vehicle, and the discharge port is disposed at a side of the case;
The cooling fan and the discharge port communicate with each other through a cooling fan duct,
An exhaust hood is provided so as to surround the vicinity of the discharge port along the outer periphery of the discharge port,
In the cooling air discharge passage formed by the cooling fan duct and the exhaust hood, the cooling air discharge passage is opened when air is blown from the cooling fan, and the air blowing from the cooling fan is stopped. A vehicle battery pack comprising a flow path opening / closing portion to which a valve body that closes the cooling air discharge flow path is provided. 前記流路開閉部は、複数の前記弁体を備え、
前記複数の弁体は、当該複数の弁体が全部で、前記冷却風排出流路を全体的に閉塞可能とするように並置され、
それぞれの前記弁体は、冷却風の圧力に応じて、前記冷却風排出流路を、部分的に開放と閉塞を独自に行う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。 The flow path opening / closing part includes a plurality of the valve bodies,
The plurality of valve bodies are juxtaposed so that the plurality of valve bodies in total can block the cooling air discharge flow path as a whole,
2. The vehicle battery pack according to claim 1, wherein each of the valve bodies independently opens and closes the cooling air discharge channel partially according to a pressure of the cooling air. 前記排気フードは、前記排出口から側方へ向けて直線的に突出するように形成され、
前記排気フードの車両搭載時の車両上下方向の上側に配置されたフード上側壁部の先端部は、排気フードの車両搭載時の車両上下方向の下側に配置されたフード下側壁部の先端部よりも側方へ向けて突出し、前記排気フードの下流端部に冷却風を側方へ吐出させる空気吐出口を形成し、前記フード下側壁部の先端部から前記空気吐出口の上縁部に向かって立ち上がる立壁部が形成されていることを特徴とする請求項１または請求項２に記載の車両用バッテリパック。 The exhaust hood is formed so as to protrude linearly from the discharge port to the side,
The front end portion of the hood upper side wall portion disposed on the upper side in the vehicle vertical direction when the exhaust hood is mounted on the vehicle is the front end portion of the hood lower side wall portion disposed on the lower side in the vehicle vertical direction when the exhaust hood is mounted on the vehicle. Projecting further to the side, forming an air outlet for discharging cooling air to the side at the downstream end of the exhaust hood, from the tip of the hood lower side wall to the upper edge of the air outlet The vehicle battery pack according to claim 1, wherein a standing wall portion that rises toward the vehicle is formed. 前記排気フードの上流端部内に前記流路開閉部が設けられ、前記上流端部の外周面には外側に向けて突出する係合用爪部と係止部とが形成され、前記排気フードが、前記ケースに対して、前記係合用爪部と前記係止部とで、前記排出口の周縁部を挟むように取り付けられていることを特徴とする請求項１〜請求項３のいずれか一項に記載の車両用バッテリパック。   The flow path opening / closing portion is provided in the upstream end portion of the exhaust hood, and an engaging claw portion and a locking portion projecting outward are formed on the outer peripheral surface of the upstream end portion. The said case is attached so that the peripheral part of the said discharge port may be pinched | interposed with the said nail | claw part for an engagement and the said latching | locking part. The battery pack for vehicles as described in. 前記係合用爪部は、係止部よりも前記排気フードの上流側に配置され、かつ上流側から下流側に向けて、前記排気フードから離れる方向に傾斜する係合用斜面を有することを特徴とする請求項４に記載の車両用バッテリパック。   The engaging claw portion is disposed on the upstream side of the exhaust hood with respect to the locking portion, and has an engaging slope inclined in a direction away from the exhaust hood from the upstream side toward the downstream side. The vehicle battery pack according to claim 4. 車両のリヤシートよりも車両前後方向後方側のリヤフロアパネルに開口部が形成され、かつ該開口部に挿入配置された前記ケースの上部を外側から覆うカバー部材が取り付けられた構造に対して、前記カバー部材の天井部下面と前記ケースの頂面とで挟まれた天井面側隙間に前記吸入口が配置され、前記カバー部材の周壁内面と前記ケースの外側面とで挟まれた周面側隙間内に前記排気フードが配置されるように搭載されることを特徴とする請求項１〜請求項５のいずれか一項に記載の車両用バッテリパック。   With respect to a structure in which an opening is formed in a rear floor panel on the rear side in the vehicle longitudinal direction from the rear seat of the vehicle, and a cover member that covers the upper part of the case inserted and arranged in the opening from the outside is attached. The suction port is disposed in a ceiling surface side gap sandwiched between the lower surface of the ceiling portion of the member and the top surface of the case, and in the circumferential surface side gap sandwiched between the inner surface of the peripheral wall of the cover member and the outer surface of the case The vehicle battery pack according to any one of claims 1 to 5, wherein the exhaust hood is mounted on the vehicle.
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JP6035967B2 (en) 2016-11-30

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