JP2008159440A - Vehicular battery cooling system - Google Patents

Vehicular battery cooling system Download PDF

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Publication number
JP2008159440A
JP2008159440A JP2006347941A JP2006347941A JP2008159440A JP 2008159440 A JP2008159440 A JP 2008159440A JP 2006347941 A JP2006347941 A JP 2006347941A JP 2006347941 A JP2006347941 A JP 2006347941A JP 2008159440 A JP2008159440 A JP 2008159440A
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Prior art keywords
battery
cooling system
battery cell
exterior film
plate
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Japanese (ja)
Inventor
Toshikazu Yoshihara
俊和 吉原
Toshiyuki Motohashi
季之 本橋
Yoshikazu Takamatsu
由和 高松
Toshiharu Watanabe
年春 渡辺
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Marelli Corp
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Calsonic Kansei Corp
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Priority to JP2006347941A priority Critical patent/JP2008159440A/en
Priority to PCT/JP2007/074201 priority patent/WO2008078586A1/en
Publication of JP2008159440A publication Critical patent/JP2008159440A/en
Pending legal-status Critical Current

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    • 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
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
    • H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
    • 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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/548—Terminals characterised by the disposition of the terminals on the cells on opposite sides of the cell
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H01M50/557—Plate-shaped terminals
    • 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

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Power Engineering (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular battery cooling system capable of improving thermal conductivity from a battery element body, and of improving cooling efficiency. <P>SOLUTION: This vehicular battery cooling system includes: a battery cell 2 composed by covering a battery element 21 and electrode tabs 22 and 23 with an armoring film 24 to partially expose the electrode tabs 22 and 23; and a cold plate 5 carrying out heat exchange by running a cooling medium in the inside. The vehicular battery cooling system is structured such that the armoring film 24 has a structure formed by folding back a solid body, and a heat generation portion from the battery element 21 is transmitted to the cold plate 5 through the folded-back part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、車両に設置される走行用バッテリを冷却する車両用バッテリ冷却システムの技術分野に属する。   The present invention belongs to the technical field of a vehicle battery cooling system for cooling a traveling battery installed in a vehicle.

従来では、電池要素には、正極及び負極のそれぞれの集電部が設けられ、これら集電部にそれぞれリード端子が接続され、電池要素は、２枚の外装フィルムによって上下から挟まれ、２枚の外装フィルムの周縁部を接合することで外装フィルム内に封止している（例えば、特許文献１参照。）。
特開２００４−２６５７６１号公報（第２−１１頁、全図） Conventionally, a battery element is provided with current collectors for each of a positive electrode and a negative electrode, lead terminals are connected to the current collectors, respectively, and the battery element is sandwiched from above and below by two exterior films. The outer peripheral film is sealed in the outer film by bonding the peripheral edge of the outer film (for example, see Patent Document 1).
Japanese Patent Laying-Open No. 2004-265761 (page 2-11, all figures)

しかしながら、従来にあっては、ラミネート部の縁取りがあるため、電池要素体からの熱伝導が悪いという問題があった。   However, conventionally, there is a problem that heat conduction from the battery element body is poor because the laminate portion has an edge.

本発明は、上記問題点に着目してなされたもので、その目的とするところは、電池要素体からの熱伝導性を向上させ、冷却効率を向上させることができる車両用バッテリ冷却システムを提供することにある。   The present invention has been made paying attention to the above-mentioned problems, and an object of the present invention is to provide a vehicle battery cooling system capable of improving the thermal conductivity from the battery element body and improving the cooling efficiency. There is to do.

上記目的を達成するため、本発明では、電池要素と電極を、電極が一部露呈するよう外装フィルムで覆った電池セルと、内部で冷媒を流動させて熱交換を行う冷却プレートを備える車両用バッテリ冷却システムにおいて、前記外装フィルムを、一体物を折り返す構成にし、この折り返し部分を介して、前記電池要素から前記冷却プレートへの発熱分の伝導を行う構成にした、ことを特徴とすることを特徴とする。   In order to achieve the above object, in the present invention, for a vehicle, the battery element and the electrode are provided with a battery cell that is covered with an exterior film so that the electrode is partially exposed, and a cooling plate that exchanges heat by flowing a refrigerant inside. In the battery cooling system, the exterior film is configured to fold back an integrated object, and is configured to conduct heat generation from the battery element to the cooling plate through the folded portion. Features.

よって、本発明にあっては、電池要素体からの熱伝導性を向上させ、冷却効率を向上させることができる。   Therefore, in this invention, the thermal conductivity from a battery element body can be improved and cooling efficiency can be improved.

以下、本発明の車両用バッテリ冷却システムを実現する実施の形態を、請求項１，２に係る発明に対応する実施例１と、請求項１，２，３に係る発明に対応する実施例２と、請求項１，２，３，４に係る発明に対応する実施例３に基づいて説明する。   Embodiments for realizing a vehicle battery cooling system according to the present invention will now be described in the first embodiment corresponding to the first and second embodiments, and the second embodiment corresponding to the first, second and third embodiments. A third embodiment corresponding to the invention according to claims 1, 2, 3 and 4 will be described.

まず、構成を説明する。
図１は実施例１の車両用バッテリ冷却システムのバッテリ構造を示す説明図である。図２は実施例１の車両用バッテリ冷却システムのバッテリ構造において、サイドプレートを分解した状態を示す説明図である。図３は実施例１の車両用バッテリ冷却システムの電池セルの説明正面図である。図４は実施例１の車両用バッテリ冷却システムの電池セルの説明側面図である。図５は実施例１の車両用バッテリ冷却システムの電池セルの外装フィルムの展開状態を示す説明図である。図６は実施例１の車両用バッテリ冷却システムのバッテリ装置の車両設定位置を示す説明図である。 First, the configuration will be described.
FIG. 1 is an explanatory diagram illustrating a battery structure of a vehicle battery cooling system according to a first embodiment. FIG. 2 is an explanatory diagram illustrating a state in which the side plate is disassembled in the battery structure of the vehicle battery cooling system according to the first embodiment. FIG. 3 is an explanatory front view of the battery cell of the vehicle battery cooling system according to the first embodiment. FIG. 4 is an explanatory side view of the battery cell of the vehicle battery cooling system according to the first embodiment. FIG. 5 is an explanatory view showing a developed state of the exterior film of the battery cell of the vehicle battery cooling system of the first embodiment. FIG. 6 is an explanatory diagram illustrating a vehicle setting position of the battery device of the vehicle battery cooling system according to the first embodiment.

構成を説明する。
実施例１の車両用バッテリ冷却システムのバッテリ装置１は、電池セル２、サイドプレート３，４、コールドプレート５を主要な構成としている。
電池セル２は、図５に示すように、電池要素２１、電極タブ２２，２３、外装フィルム２４からなる。また電池セル２は、展開した外装フィルム２４の折り目近傍に電池要素２１の側辺を位置させ、電池要素２１の他の辺が、外装フィルム２４の外周縁から所定の幅を持って内側となり、電極タブ２２，２３が外部へはみ出すようにして、外装フィルム２４を折り曲げて合わせるように包む構造である。 The configuration will be described.
The battery device 1 of the vehicle battery cooling system according to the first embodiment includes a battery cell 2, side plates 3 and 4, and a cold plate 5 as main components.
As shown in FIG. 5, the battery cell 2 includes a battery element 21, electrode tabs 22 and 23, and an exterior film 24. Further, the battery cell 2 has the side of the battery element 21 positioned in the vicinity of the fold of the unfolded exterior film 24, and the other side of the battery element 21 is inside with a predetermined width from the outer periphery of the exterior film 24. The electrode tabs 22 and 23 are structured so as to protrude outward, and the exterior film 24 is folded and wrapped.

つまり、外装フィルム２４は、折り返しで電池要素２１、電極タブ２２，２３を包むため、１辺は縁取り部分がなく、他の３辺は、外装フィルム２４同士を接合する縁取り部分がある構成となる。外装フィルム２４同士の接合例として熱溶着を挙げておく。
電池セル２は、この外装フィルム２４の縁取り部分のない１辺を下方にして、コールドプレート５の上面にその１辺を接地させるよう配置する構造である。
なお、電池セル２の例としてリチウムイオンバッテリを挙げておく。 That is, since the exterior film 24 wraps around the battery element 21 and the electrode tabs 22 and 23, one side has no border and the other three sides have a border that joins the exterior films 24 together. . An example of joining the exterior films 24 is thermal welding.
The battery cell 2 has a structure in which one side without an edge portion of the exterior film 24 is disposed downward so that the one side is grounded on the upper surface of the cold plate 5.
A lithium ion battery is given as an example of the battery cell 2.

サイドプレート３，４は、上下に長い箱型の１面に、電池セル２を横方向に積層させるよう縦長の開口部３１，４１を複数形成し、開口部３１，４１の反対側の面に、電極タブ２２，２３を貫通させる複数の縦長のスリット３２，４２を設けている。
さらに、サイドプレート３，４は、図２に示すように、上下に長い箱型の下面からスリット３２，４２を設けた面を下方に伸延させ、折曲させて開口部３１，４１側へさらに伸延させるＬ字状の部分を設けて、コールドプレート５を挿入させるコ字状の保持部３３，４３を形成する。 The side plates 3 and 4 have a plurality of vertically long openings 31 and 41 formed on one surface of a box shape that is long in the vertical direction so that the battery cells 2 are stacked in the horizontal direction, and on the surface opposite to the openings 31 and 41. A plurality of vertically long slits 32 and 42 penetrating the electrode tabs 22 and 23 are provided.
Further, as shown in FIG. 2, the side plates 3 and 4 are further extended to the side of the openings 31 and 41 by extending the surface provided with the slits 32 and 42 downward from a box-shaped lower surface that is long in the vertical direction and bending the surface. L-shaped portions to be extended are provided, and U-shaped holding portions 33 and 43 into which the cold plate 5 is inserted are formed.

ここで、実施例１の車両用バッテリ冷却システムのバッテリ装置１の組付け構造を説明すると、図３，４に示すように、電池セル２の外装フィルム２４の縁取り部分のない１辺を下方にして、コールドプレート５の上面にその１辺を接地させるよう複数積層させて配置し、積層状態の電池セル２の両端を、サイドプレート３，４の開口部３１，４１にそれぞれ挿入し、電池セル２の電極タブ２２，２３をスリット３２，４２に貫通させるようにする。また、その際にサイドプレート３，４のコ字状の保持部３３，４３にコールドプレート５を挿入して嵌合させる。   Here, the assembly structure of the battery device 1 of the vehicle battery cooling system according to the first embodiment will be described. As shown in FIGS. Then, a plurality of stacked layers are arranged on the upper surface of the cold plate 5 so that one side of the cold plate 5 is grounded, and both ends of the stacked battery cell 2 are inserted into the openings 31 and 41 of the side plates 3 and 4, respectively. The two electrode tabs 22 and 23 are passed through the slits 32 and 42. At this time, the cold plate 5 is inserted and fitted into the U-shaped holding portions 33 and 43 of the side plates 3 and 4.

次に実施例１の車両用バッテリ冷却システムのコールドプレート５の詳細な構造について説明する。
図７はコールドプレートの側面図である。図８はコールドプレートのアッパプレートの無い状態の一部切り欠き平面図である。図９は図８のＡ−Ａ断面図である。 Next, the detailed structure of the cold plate 5 of the vehicle battery cooling system according to the first embodiment will be described.
FIG. 7 is a side view of the cold plate. FIG. 8 is a partially cutaway plan view of the cold plate without the upper plate. 9 is a cross-sectional view taken along the line AA in FIG.

実施例１のコールドプレート５は、入口側パイプ５１、出口側パイプ５２、アッパプレート５３、第１ロアプレート５４、第２ロアプレート５５、タンク５６、インナーフィン５７を主要な構成としている。
まず、溝部を構成するように凹んだ断面形状となった、第１ロアプレート５４、第２ロアプレート５５を設ける。第１ロアプレート５４よりも第２ロアプレート５５が溝幅の広い形状とする。 The cold plate 5 of the first embodiment mainly includes an inlet side pipe 51, an outlet side pipe 52, an upper plate 53, a first lower plate 54, a second lower plate 55, a tank 56, and an inner fin 57.
First, the 1st lower plate 54 and the 2nd lower plate 55 which became the cross-sectional shape dented so that a groove part may be comprised are provided. The second lower plate 55 has a wider groove width than the first lower plate 54.

この第１ロアプレート５４と第２ロアプレート５５を並列させ、長手方向に長い２つの通路を形成するように、上部を覆うアッパプレート５３に取り付ける。
これにより長手方向に長く貫通する通路を形成する。
そして、この２つの通路内には、インナーフィン５７をそれぞれ設ける。インナーフィン５７は、この第１通路と第２通路の２つの通路を、さらに複数の長手方向の通路に仕切る構造で、冷媒流れを整流させるものである。 The first lower plate 54 and the second lower plate 55 are arranged in parallel, and are attached to the upper plate 53 that covers the upper part so as to form two long passages in the longitudinal direction.
This forms a passage that extends long in the longitudinal direction.
Inner fins 57 are provided in the two passages. The inner fin 57 has a structure that divides the two passages of the first passage and the second passage into a plurality of passages in the longitudinal direction, and rectifies the refrigerant flow.

第１ロアプレート５４と第２ロアプレート５５、インナーフィン５７で構成した第１通路と第２通路の左端は、それぞれ閉じるようにし、右端は、内部空間を有するタンク５６の開口部と接続するようにする。
これにより、第１通路は、タンク５６内部で折り返し、第２通路へ向かう構造となる。 The left end of the first passage and the second passage constituted by the first lower plate 54, the second lower plate 55, and the inner fin 57 is closed, and the right end is connected to the opening of the tank 56 having an internal space. To.
As a result, the first passage is folded inside the tank 56 and is directed to the second passage.

さらに、第１通路の閉じた左端近傍の第１ロアプレート５４には、入口側パイプ５１を接続し、第２通路の閉じた左端近傍の第２ロアプレート５５には、出口側パイプ５２を接続する。
なお、入口側パイプ５１の近傍のインナーフィン５７部分及び他の部分には、インナーフィン５７の仕切りがない部分を設ける。また、出口側パイプ５２の近傍のインナーフィン５７部分及び他の部分には、インナーフィン５７の仕切りがない部分を設ける。 Furthermore, the inlet side pipe 51 is connected to the first lower plate 54 near the left end of the first passage, and the outlet side pipe 52 is connected to the second lower plate 55 near the left end of the second passage. To do.
The inner fin 57 portion and other portions in the vicinity of the inlet side pipe 51 are provided with a portion where the inner fin 57 is not partitioned. Further, the inner fin 57 portion in the vicinity of the outlet side pipe 52 and other portions are provided with portions where the inner fin 57 is not partitioned.

タンク５６の内部空間は、所定の空間を有するようにして、冷媒量が充分に第２通路へ流れるようにする。
そして、このコールドプレート５では、例えばエアコンシステムの冷媒を内部に流すことでバッテリの冷却を行う。 The internal space of the tank 56 has a predetermined space so that a sufficient amount of refrigerant flows to the second passage.
And in this cold plate 5, a battery is cooled by flowing the refrigerant | coolant of an air-conditioning system inside, for example.

次に作用を説明する。
[効果高く冷却を行う作用]
実施例１の車両用バッテリ冷却システムでは、液状化したエアコン冷媒が、コールドプレート５の入口側パイプ５１から流れこみ、第１通路である第１ロアプレート５４部分を通過し、タンク５６を経由して流れ方向が変わり、流れの方向が曲がるように変わった冷媒は、第２通路である第２ロアプレート５５部分を通過し、出口側パイプ５２から外部へ流れ出る。
なお、エアコン冷媒は、入口側パイプ５１から第１通路、第２通路、出口側パイプ５２の間で、冷媒が液状から沸騰して気化するものである。 Next, the operation will be described.
[High cooling effect]
In the vehicle battery cooling system of the first embodiment, the liquefied air-conditioning refrigerant flows from the inlet side pipe 51 of the cold plate 5, passes through the first lower plate 54 portion which is the first passage, and passes through the tank 56. Thus, the flow direction is changed, and the refrigerant changed so that the flow direction is bent passes through the second lower plate 55 portion which is the second passage and flows out from the outlet side pipe 52 to the outside.
The air-conditioner refrigerant is a liquid that boils from the liquid state and vaporizes between the inlet-side pipe 51, the first passage, the second passage, and the outlet-side pipe 52.

さらに、第１通路及び第２通路に設けたインナーフィン５７により、アッパプレート５３、第１ロアプレート５４、第２ロアプレート５５と金属接触により高い熱伝導するインナーフィン５７の仕切り部分が熱交換面積広く冷媒と接触し熱交換する。これによりさらに効率高く冷却が行われる。   Furthermore, the inner fin 57 provided in the first passage and the second passage allows the partition portion of the inner fin 57 that conducts high heat by metal contact with the upper plate 53, the first lower plate 54, and the second lower plate 55 to be a heat exchange area. Widely contacts with refrigerant to exchange heat. Thereby, cooling is performed with higher efficiency.

本実施例１の車両用バッテリ冷却システムでは、広い面接でコールドプレート５による冷却が行われるが、このように均一で効率のよい冷却をコールドプレート５が行うことにより、さらにバッテリの一部が冷却不足になるようなことなく、従来より効率高く冷却されるため、バッテリの今後の性能向上、省スペース化に対しても有利となる。   In the vehicle battery cooling system according to the first embodiment, the cold plate 5 performs cooling in a wide interview. However, the cold plate 5 performs uniform and efficient cooling as described above, thereby further cooling a part of the battery. Since it is cooled more efficiently than before without becoming insufficient, it is advantageous for future performance improvement and space saving of the battery.

[電池要素体からの熱伝導性向上作用]
実施例１の車両用バッテリ冷却システムでは、電池セル２において、外装フィルム２４の折り返し部分をコールドプレート５と接触あるいは接近させることができる。
図１０は、外装フィルム２４の縁取り部分がある場合で、実施例１に類似するバッテリ冷却構造にした状態の説明図である。
従来では、４方に外装フィルム２４の縁取り部分があるため、本実施例１のような近接した構造を取ることができない。そのため、従来では電池要素２１から外装フィルム２４の縁取り部分を介してコールドプレート５へ発熱分が熱伝導されていた（図１０参照）。これに対して、実施例１では、外装フィルム２４の折り返し部分を介するため、非常に熱伝導性が向上する。
よって、電池要素２１から発熱した熱が放熱しやすくなり、冷却効率が向上する。 [Improvement of thermal conductivity from battery element]
In the vehicle battery cooling system of the first embodiment, in the battery cell 2, the folded portion of the exterior film 24 can be brought into contact with or close to the cold plate 5.
FIG. 10 is an explanatory diagram of a state where a battery cooling structure similar to that of the first embodiment is provided in the case where there is an edge portion of the exterior film 24.
Conventionally, since there are edge portions of the exterior film 24 in four directions, a close structure as in the first embodiment cannot be taken. Therefore, conventionally, heat generated from the battery element 21 is conducted to the cold plate 5 through the edge portion of the exterior film 24 (see FIG. 10). On the other hand, in Example 1, since the folded part of the exterior film 24 is interposed, the thermal conductivity is greatly improved.
Therefore, the heat generated from the battery element 21 is easily dissipated, and the cooling efficiency is improved.

[コストを抑制する作用]
実施例１の車両用バッテリ冷却システムでは、電池セル２とサイドプレート３，４の差込構造、サイドプレート３，４とコールドプレート５との差込構造により、非常に容易な組付け構造を実現している。そのため、作業効率が向上し、ひいてはコスト低減につながる。 [Action to reduce costs]
In the vehicle battery cooling system of the first embodiment, a very easy assembly structure is realized by the insertion structure of the battery cell 2 and the side plates 3 and 4 and the insertion structure of the side plates 3 and 4 and the cold plate 5. is doing. As a result, work efficiency is improved, which leads to cost reduction.

さらに、実施例１では、外装フィルム２４を折り返し構造にすることにより、部品点数を低減することができ、熱溶着等の接合部分を縮小することができ、作業効率が向上し、ひいてはコスト低減につながる。
このように実施例１では、コストを抑制しつつ、熱伝導性を向上させることができる。 Furthermore, in Example 1, the exterior film 24 has a folded structure, so that the number of parts can be reduced, the joint portion such as thermal welding can be reduced, work efficiency is improved, and cost is reduced. Connected.
Thus, in Example 1, thermal conductivity can be improved, suppressing cost.

次に、効果を説明する。
実施例１の車両用バッテリ冷却システムにあっては、下記に列挙する効果を得ることができる。 Next, the effect will be described.
In the vehicle battery cooling system of the first embodiment, the effects listed below can be obtained.

(1)電池要素２１と電極タブ２２，２３を、電極タブ２２，２３が一部露呈するよう外装フィルム２４で覆った電池セル２と、内部で冷媒を流動させて熱交換を行うコールドプレート５を備える車両用バッテリ冷却システムにおいて、外装フィルム２４を、一体物を折り返す構成にし、この折り返し部分を介して、電池要素２１からコールドプレート５への発熱分の伝導を行う構成にしたため、電池要素体からの熱伝導性を向上させ、冷却効率を向上させることができる。   (1) The battery cell 2 in which the battery element 21 and the electrode tabs 22 and 23 are covered with the exterior film 24 so that the electrode tabs 22 and 23 are partially exposed, and the cold plate 5 that exchanges heat by flowing a refrigerant inside. In the vehicle battery cooling system provided with the battery element body, the exterior film 24 is configured to be folded back so that the heat generated from the battery element 21 to the cold plate 5 can be conducted through the folded portion. Therefore, the thermal conductivity can be improved and the cooling efficiency can be improved.

(2)外装フィルム２４の折り返し部分は、板状の電池セル２の少なくとも１辺部分とし、コールドプレート５上に、電池セル２の外装フィルム２４の折り返し部分の１辺を下にして、横向きに積層するよう電池セル２を複数立設させ、電池セル２の左右両端をそれぞれ嵌め込んでコールドプレート５上に保持するサイドプレート３，４を備えたため、積層させた複数の電池セル２を容易な組付けにできつつ、積層させた複数の電池セル２の電池要素体からの熱伝導性を向上させ、冷却効率を向上させることができる。   (2) The folded portion of the exterior film 24 is at least one side portion of the plate-shaped battery cell 2 and is placed on the cold plate 5 with one side of the folded portion of the exterior film 24 of the battery cell 2 facing down. Since a plurality of battery cells 2 are erected so as to be stacked and side plates 3 and 4 are fitted on the left and right ends of the battery cell 2 and held on the cold plate 5, the stacked battery cells 2 can be easily formed. While being able to be assembled, the thermal conductivity from the battery element bodies of the plurality of stacked battery cells 2 can be improved, and the cooling efficiency can be improved.

実施例２は、電池セルの対向する両側の２辺の外装フィルムを折り返し部分にし、上下に配置したコールドプレート間に電池セルを立設させる例である。
図１１は実施例２の車両用バッテリ冷却システムのバッテリ構造を示す説明図である。図１２は実施例２の車両用バッテリ冷却システムの電池セルの説明正面図である。図１３は実施例２の車両用バッテリ冷却システムの電池セルの説明側面図である。図１４は実施例２の車両用バッテリ冷却システムの電池セルの外装フィルムの展開状態を示す説明図である。図１５は実施例２の車両用バッテリ冷却システムの電池セルの外装フィルムの接合状態を示す説明図である。図１６は実施例２の車両用バッテリ冷却システムのバッテリ構造において、サイドプレートを分解した状態を示す説明図である。 Example 2 is an example in which a battery cell is erected between cold plates arranged on the top and bottom with two exterior films on opposite sides of the battery cell facing each other.
FIG. 11 is an explanatory diagram illustrating a battery structure of the vehicle battery cooling system according to the second embodiment. FIG. 12 is an explanatory front view of the battery cell of the vehicle battery cooling system according to the second embodiment. FIG. 13 is an explanatory side view of the battery cell of the vehicle battery cooling system according to the second embodiment. FIG. 14 is an explanatory view showing a developed state of the exterior film of the battery cell of the vehicle battery cooling system of the second embodiment. FIG. 15 is an explanatory view showing a bonding state of the exterior film of the battery cell of the vehicle battery cooling system of the second embodiment. FIG. 16 is an explanatory view showing a state in which the side plate is disassembled in the battery structure of the vehicle battery cooling system of the second embodiment.

構成を説明する。
実施例２では、図１４に示すように、外装フィルム２５は、電池セル２の電池要素２１の両辺において折り返す構成である。
また、サイドプレート３，４は、図１１、図１６に示すように、上端部にも下端部と同様に、コールドプレート５を挿入させるコ字状の保持部３４，４４を形成する。 The configuration will be described.
In Example 2, as shown in FIG. 14, the exterior film 25 is configured to be folded back on both sides of the battery element 21 of the battery cell 2.
Further, as shown in FIGS. 11 and 16, the side plates 3 and 4 form U-shaped holding portions 34 and 44 into which the cold plate 5 is inserted at the upper end portion, similarly to the lower end portion.

実施例２の構成を組付構造に沿って説明すると、図１４に示すように、展開した外装フィルム２５の上下中央に、電池要素２１を配置し、左右へ電極タブ２２、２３がはみ出す配置にして、電池要素２１の上下辺近傍で、それぞれ外装フィルム２５を中央へ向かって折り返す。そして、図１５に示すように、折り返した外装フィルム２５の上下端を合わせて、熱溶着し、接合した部分をさらに折り返して厚さを少なくする（図１３参照）。   Explaining the configuration of Example 2 along the assembly structure, as shown in FIG. 14, the battery element 21 is arranged at the center of the developed outer film 25 and the electrode tabs 22, 23 protrude from the left and right. In the vicinity of the upper and lower sides of the battery element 21, the exterior film 25 is folded back toward the center. And as shown in FIG. 15, the upper and lower ends of the folded exterior film 25 are put together and heat-welded, and the joined portion is further folded to reduce the thickness (see FIG. 13).

この電池セル２を、上下に配置したコールドプレート５の下側のコールドプレート５上面に横方向に積層させるよう複数配置し、電池セル２の上下辺がそれぞれコールドプレート５に接触あるいは近傍に位置する状態、つまり複数積層した電池セル２を、上下からコールドプレート５で挟む状態にする。そして、積層状態の電池セル２の両端を、サイドプレート３，４の開口部３１，４１にそれぞれ挿入し、電池セル２の電極タブ２２，２３をスリット３２，４２に貫通させるようにする。また、その際にサイドプレート３，４の下側のコ字状の保持部３３，４３及び、上側のコ字状の保持部３４，４４にそれぞれ上下でコールドプレート５を挿入して嵌合させる（図１１、図１６参照）。
その他構成は、実施例１と同様であるため説明を省略する。 A plurality of the battery cells 2 are arranged so as to be stacked in the horizontal direction on the upper surface of the cold plate 5 below the cold plates 5 arranged above and below, and the upper and lower sides of the battery cells 2 are respectively in contact with or near the cold plate 5. A state, that is, a state in which a plurality of stacked battery cells 2 are sandwiched between the cold plates 5 from above and below. Then, both ends of the stacked battery cell 2 are inserted into the openings 31 and 41 of the side plates 3 and 4, respectively, so that the electrode tabs 22 and 23 of the battery cell 2 pass through the slits 32 and 42. At this time, the cold plate 5 is inserted and fitted into the lower U-shaped holding portions 33 and 43 and the upper U-shaped holding portions 34 and 44 on the side plates 3 and 4 respectively. (See FIGS. 11 and 16).
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

次に作用を説明する。
[電池要素体からの熱伝導性向上作用]
実施例２の車両用バッテリ冷却システムでは、電池セル２において、外装フィルム２４の上下の折り返し部分をコールドプレート５と接触あるいは接近させることができる。そのため、電池要素２１から発熱した熱が上下方向へより放熱しやすくなり、冷却効率が向上する。 Next, the operation will be described.
[Improvement of thermal conductivity from battery element]
In the vehicle battery cooling system of the second embodiment, the upper and lower folded portions of the exterior film 24 in the battery cell 2 can be brought into contact with or close to the cold plate 5. Therefore, the heat generated from the battery element 21 is more easily dissipated in the vertical direction, and the cooling efficiency is improved.

[コストを抑制する作用]
実施例２の車両用バッテリ冷却システムでは、電池セル２とサイドプレート３，４の差込構造、さらにその際にサイドプレート３，４と上下のコールドプレート５との差込構造により、非常に容易な組付け構造を実現している。そのため、作業効率が向上し、ひいてはコスト低減につながる。
このように実施例２では、コストを抑制しつつ、熱伝導性を向上させることができる。 [Action to reduce costs]
In the vehicle battery cooling system according to the second embodiment, the insertion structure between the battery cell 2 and the side plates 3 and 4 and the insertion structure between the side plates 3 and 4 and the upper and lower cold plates 5 are very easy. A simple assembly structure is realized. As a result, work efficiency is improved, which leads to cost reduction.
Thus, in Example 2, thermal conductivity can be improved, suppressing cost.

次に、効果を説明する。
実施例２の車両用バッテリ冷却システムにあっては、上記(1),(2)の効果に加えて以下の効果を有する。
(3)外装フィルム２５の折り返し部分は、板状の電池セル２の上下２辺部分とし、サイドプレート３，４は、上下に配置したコールドプレート５間に、電池セル２の外装フィルム２５の折り返し部分の１辺を上下にして、横向きに積層するよう電池セル２を複数立設させ、電池セル２の左右両端及び上下に配置したコールドプレート５の端部をそれぞれ保持部３３，３４，４３，４４に嵌め込んで冷却プレート上に保持するものであるため、積層させた複数の電池セル２を上下のコールドプレート５へ容易に組付けできつつ、積層させた複数の電池セル２の電池要素体からの熱伝導性を上下に伝達させるようにして向上させ、冷却効率を向上させることができる。
その他作用効果は、実施例１と同様であるため説明を省略する。 Next, the effect will be described.
The vehicle battery cooling system according to the second embodiment has the following effects in addition to the effects (1) and (2).
(3) The folded portion of the exterior film 25 is the two upper and lower sides of the plate-like battery cell 2, and the side plates 3 and 4 are folded between the cold plates 5 arranged above and below the exterior film 25 of the battery cell 2. A plurality of battery cells 2 are erected so as to be stacked sideways with one side of the portion up and down, and the left and right ends of the battery cell 2 and the end of the cold plate 5 disposed above and below are respectively held by holding portions 33, 34, 43, The battery element body of the plurality of stacked battery cells 2 can be easily assembled to the upper and lower cold plates 5 while being fitted to 44 and held on the cooling plate. Therefore, the thermal conductivity can be improved by transmitting up and down, and the cooling efficiency can be improved.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

実施例３は、コールドプレートに電池セルをはめこむ溝を設けた例である。
図１７は実施例３の車両用バッテリ冷却システムのバッテリ構造を示す説明図である。図１８は実施例３の車両用バッテリ冷却システムの電池セルの説明正面図である。図１９は実施例３の車両用バッテリ冷却システムの電池セルの説明側面図である。図２０は実施例３の車両用バッテリ冷却システムの電池セルとコールドプレートの嵌め合い構造の説明図である。図２１は実施例３の車両用バッテリ冷却システムのバッテリ構造において、サイドプレートを分解した状態を示す説明図である。 Example 3 is an example in which a groove for fitting a battery cell is provided in a cold plate.
FIG. 17 is an explanatory diagram illustrating a battery structure of the vehicle battery cooling system according to the third embodiment. FIG. 18 is an explanatory front view of the battery cell of the vehicle battery cooling system of the third embodiment. FIG. 19 is an explanatory side view of the battery cell of the vehicle battery cooling system according to the third embodiment. FIG. 20 is an explanatory diagram of a fitting structure between a battery cell and a cold plate in the vehicle battery cooling system according to the third embodiment. FIG. 21 is an explanatory view showing a state in which the side plate is disassembled in the battery structure of the vehicle battery cooling system of the third embodiment.

構成を説明する。
実施例３では、上下に配置するコールドプレート５の対向する面に、電池セル２を嵌合させる嵌合溝５８を複数並列させて設ける。
また、サイドプレート３，４の縦長の開口部を、上下にも開口させて、開口部３１ａ、４１ａとする。 The configuration will be described.
In the third embodiment, a plurality of fitting grooves 58 for fitting the battery cells 2 are provided in parallel on the opposing surfaces of the cold plates 5 arranged above and below.
Further, the vertically long openings of the side plates 3 and 4 are also opened vertically so as to be openings 31a and 41a.

実施例３の構成を組付構造に沿って説明すると、電池要素２１の上下辺近傍で、それぞれ外装フィルム２５を中央へ向かって折り返して電池セル２を構成する。
この電池セル２を、上下に配置したコールドプレート５の下側のコールドプレート５上面の嵌合溝５８と、上側のコールドプレート５下面の嵌合溝５８に嵌め込むようにして、横方向に積層させるよう複数配置し、つまり複数積層した電池セル２を、上下からコールドプレート５で挟む状態にする。そして、積層状態の電池セル２の両端を、サイドプレート３，４の開口部３１ａ，４１ａにそれぞれ挿入し、電池セル２の電極タブ２２，２３をスリット３２，４２に貫通させるようにする。また、その際にサイドプレート３，４の下側のコ字状の保持部３３，４３及び、上側のコ字状の保持部３４，４４にそれぞれ上下でコールドプレート５を挿入して嵌合させる（図１７、図２１参照）。
その他構成は、実施例１、実施例２と同様であるため説明を省略する。 Explaining the configuration of Example 3 along the assembly structure, the battery film 2 is configured by folding the exterior film 25 toward the center in the vicinity of the upper and lower sides of the battery element 21.
The battery cells 2 are stacked in the lateral direction so as to fit into the fitting grooves 58 on the upper surface of the cold plate 5 on the lower side of the cold plate 5 and the fitting grooves 58 on the lower surface of the upper cold plate 5. A plurality of battery cells 2 that are arranged, that is, a plurality of stacked battery cells 2 are sandwiched between the cold plates 5 from above and below. Then, both ends of the stacked battery cell 2 are inserted into the openings 31 a and 41 a of the side plates 3 and 4, respectively, so that the electrode tabs 22 and 23 of the battery cell 2 pass through the slits 32 and 42. At this time, the cold plate 5 is inserted and fitted into the lower U-shaped holding portions 33 and 43 and the upper U-shaped holding portions 34 and 44 on the side plates 3 and 4 respectively. (See FIGS. 17 and 21).
Since other configurations are the same as those of the first and second embodiments, the description thereof is omitted.

作用を説明する。
[電池要素体からの熱伝導性向上作用]
実施例３の車両用バッテリ冷却システムでは、電池セル２の上下端をコールドプレート５の嵌合溝５８に嵌め込んだ構造であるため、電池セル２の端部でコールドプレート５への熱伝導面積が増加することになる。そのため、電池要素２１から発熱した熱が上下方向へより放熱しやすくなり、冷却効率が向上する。 The operation will be described.
[Improvement of thermal conductivity from battery element]
In the vehicle battery cooling system according to the third embodiment, since the upper and lower ends of the battery cell 2 are fitted in the fitting grooves 58 of the cold plate 5, the heat conduction area to the cold plate 5 at the end of the battery cell 2. Will increase. Therefore, the heat generated from the battery element 21 is more easily dissipated in the vertical direction, and the cooling efficiency is improved.

[コストを抑制する作用]
実施例２の車両用バッテリ冷却システムでは、電池セル２の上下端をコールドプレート５の嵌合溝５８に嵌め込むため、電池セル２の組付けが容易になる。そのため、作業効率が向上し、ひいてはコスト低減につながる。
このように実施例３では、コストを抑制しつつ、熱伝導性を向上させることができる。 [Action to reduce costs]
In the vehicle battery cooling system of the second embodiment, since the upper and lower ends of the battery cell 2 are fitted into the fitting groove 58 of the cold plate 5, the battery cell 2 can be easily assembled. As a result, work efficiency is improved, which leads to cost reduction.
Thus, in Example 3, thermal conductivity can be improved, suppressing cost.

次に、効果を説明する。
実施例３の車両用バッテリ冷却システムにあっては、上記(1),(2),(3)の効果に加えて以下の効果を有する。
(4)コールドプレート５は、電池セル２の外装フィルム２５の折り返し部分を嵌め込む嵌合溝５８を複数並列させて備えたため、熱伝導面積を増加させ、熱伝導性を向上させ、冷却効率を向上させることができ、電池セル２の組付けを容易にして作業効率を向上させることができる。
その他作用効果は、実施例１と同様であるため説明を省略する。 Next, the effect will be described.
The vehicle battery cooling system according to the third embodiment has the following effects in addition to the effects (1), (2), and (3).
(4) Since the cold plate 5 is provided with a plurality of fitting grooves 58 for fitting the folded portions of the outer film 25 of the battery cell 2 in parallel, the heat conduction area is increased, the thermal conductivity is improved, and the cooling efficiency is improved. The battery cell 2 can be easily assembled and work efficiency can be improved.
Since other functions and effects are the same as those of the first embodiment, description thereof is omitted.

以上、本発明の車両用バッテリ冷却システムを実施例１〜実施例４に基づき説明してきたが、具体的な構成については、これらの実施例に限られるものではなく、特許請求の範囲の各請求項に係る発明の要旨を逸脱しない限り、設計の変更や追加等は許容される。   As mentioned above, although the vehicle battery cooling system of the present invention has been described based on the first to fourth embodiments, the specific configuration is not limited to these embodiments, and each claim of the claims Design changes and additions are permitted without departing from the spirit of the invention according to the paragraph.

実施例１の車両用バッテリ冷却システムのバッテリ構造を示す説明図である。It is explanatory drawing which shows the battery structure of the battery cooling system for vehicles of Example 1. FIG. 実施例１の車両用バッテリ冷却システムのバッテリ構造において、サイドプレートを分解した状態を示す説明図である。It is explanatory drawing which shows the state which decomposed | disassembled the side plate in the battery structure of the battery cooling system for vehicles of Example 1. FIG. 実施例１の車両用バッテリ冷却システムの電池セルの説明正面図である。It is a description front view of the battery cell of the battery cooling system for vehicles of Example 1. FIG. 実施例１の車両用バッテリ冷却システムの電池セルの説明側面図である。It is a description side view of the battery cell of the battery cooling system for vehicles of Example 1. 実施例１の車両用バッテリ冷却システムの電池セルの外装フィルムの展開状態を示す説明図である。It is explanatory drawing which shows the expansion | deployment state of the exterior film of the battery cell of the battery cooling system for vehicles of Example 1. FIG. 実施例１の車両用バッテリ冷却システムのバッテリ装置の車両設定位置を示す説明図である。It is explanatory drawing which shows the vehicle setting position of the battery apparatus of the battery cooling system for vehicles of Example 1. FIG. コールドプレートの側面図である。It is a side view of a cold plate. コールドプレートのアッパプレートの無い状態の一部切り欠き平面図である。It is a partially cutaway top view of the cold plate without the upper plate. 図８のＡ−Ａ断面図である。It is AA sectional drawing of FIG. 外装フィルム２４の縁取り部分がある場合で、実施例１に類似するバッテリ冷却構造にした状態の説明図である。It is explanatory drawing of the state made into the battery cooling structure similar to Example 1, when there exists a border part of the exterior film 24. FIG. 実施例２の車両用バッテリ冷却システムのバッテリ構造を示す説明図である。It is explanatory drawing which shows the battery structure of the battery cooling system for vehicles of Example 2. FIG. 実施例２の車両用バッテリ冷却システムの電池セルの説明正面図である。It is a description front view of the battery cell of the battery cooling system for vehicles of Example 2. 実施例２の車両用バッテリ冷却システムの電池セルの説明側面図である。It is a description side view of the battery cell of the battery cooling system for vehicles of Example 2. 実施例２の車両用バッテリ冷却システムの電池セルの外装フィルムの展開状態を示す説明図である。It is explanatory drawing which shows the expansion | deployment state of the exterior film of the battery cell of the battery cooling system for vehicles of Example 2. FIG. 実施例２の車両用バッテリ冷却システムの電池セルの外装フィルムの接合状態を示す説明図である。It is explanatory drawing which shows the joining state of the exterior film of the battery cell of the battery cooling system for vehicles of Example 2. FIG. 実施例２の車両用バッテリ冷却システムのバッテリ構造において、サイドプレートを分解した状態を示す説明図である。It is explanatory drawing which shows the state which decomposed | disassembled the side plate in the battery structure of the battery cooling system for vehicles of Example 2. FIG. 実施例３の車両用バッテリ冷却システムのバッテリ構造を示す説明図である。It is explanatory drawing which shows the battery structure of the battery cooling system for vehicles of Example 3. FIG. 実施例３の車両用バッテリ冷却システムの電池セルの説明正面図である。It is a description front view of the battery cell of the battery cooling system for vehicles of Example 3. 実施例３の車両用バッテリ冷却システムの電池セルの説明側面図である。It is a description side view of the battery cell of the battery cooling system for vehicles of Example 3. 実施例３の車両用バッテリ冷却システムの電池セルとコールドプレートの嵌め合い構造の説明図である。It is explanatory drawing of the fitting structure of the battery cell of the battery cooling system for vehicles of Example 3, and a cold plate. 実施例３の車両用バッテリ冷却システムのバッテリ構造において、サイドプレートを分解した状態を示す説明図である。In the battery structure of the vehicle battery cooling system of Example 3, it is explanatory drawing which shows the state which decomposed | disassembled the side plate.

符号の説明Explanation of symbols

１ バッテリ装置
２ 電池セル
３ サイドプレート
４ サイドプレート
５ コールドプレート
２１ 電池要素
２２ 電極タブ
２３ 電極タブ
２４ 外装フィルム
２５ 外装フィルム
３１ 開口部
４１ 開口部
３１ａ 開口部
４１ａ 開口部
３２ スリット
４２ スリット
３３ 保持部
４３ 保持部
３４ 保持部
４４ 保持部
５１ 入口側パイプ
５２ 出口側パイプ
５３ アッパプレート
５４ 第１ロアプレート
５５ 第２ロアプレート
５６ タンク
５７ インナーフィン
５８ 嵌合溝
Ｃ 車両 DESCRIPTION OF SYMBOLS 1 Battery apparatus 2 Battery cell 3 Side plate 4 Side plate 5 Cold plate 21 Battery element 22 Electrode tab 23 Electrode tab 24 Exterior film 25 Exterior film 31 Opening part 41 Opening part 31a Opening part 41a Opening part 32 Slit 42 Slit 33 Holding part 43 Holding part 34 Holding part 44 Holding part 51 Inlet side pipe 52 Outlet side pipe 53 Upper plate 54 First lower plate 55 Second lower plate 56 Tank 57 Inner fin 58 Fitting groove C Vehicle

Claims (4)

電池要素と電極を、電極が一部露呈するよう外装フィルムで覆った電池セルと、
内部で冷媒を流動させて熱交換を行う冷却プレートを備える車両用バッテリ冷却システムにおいて、
前記外装フィルムを、一体物を折り返す構成にし、この折り返し部分を介して、前記電池要素から前記冷却プレートへの発熱分の伝導を行う構成にした、
ことを特徴とする車両用バッテリ冷却システム。 A battery cell in which a battery element and an electrode are covered with an exterior film so that the electrode is partially exposed;
In a vehicle battery cooling system including a cooling plate that exchanges heat by flowing a refrigerant inside,
The exterior film is configured to fold back an integral object, and through the folded portion, the heat generation from the battery element to the cooling plate is conducted.
A vehicle battery cooling system. 請求項１に記載の車両用バッテリシステムにおいて、
前記外装フィルムの折り返し部分は、板状の電池セルの少なくとも１辺部分とし、
前記冷却プレート上に、前記電池セルの前記外装フィルムの折り返し部分の１辺を下にして、横向きに積層するよう前記電池セルを複数立設させ、前記電池セルの左右両端をそれぞれ嵌め込んで前記冷却プレート上に保持する保持手段を備えた、
ことを特徴とする車両用バッテリ冷却システム。 The vehicle battery system according to claim 1,
The folded portion of the exterior film is at least one side portion of a plate-shaped battery cell,
A plurality of the battery cells are erected on the cooling plate so that one side of the folded portion of the exterior film of the battery cell is on the bottom, and the battery cells are stacked side by side, With holding means for holding on the cooling plate,
A vehicle battery cooling system. 請求項１または請求項２に記載の車両用バッテリシステムにおいて、
前記外装フィルムの折り返し部分は、板状の電池セルの上下２辺部分とし、
前記保持手段は、上下に配置した前記冷却プレート間に、前記電池セルの前記外装フィルムの折り返し部分の１辺を上下にして、横向きに積層するよう前記電池セルを複数立設させ、前記電池セルの左右両端及び上下に配置した前記冷却プレートの端部をそれぞれ嵌め込んで前記冷却プレート上に保持するものである、
ことを特徴とする車両用バッテリ冷却システム。 The vehicle battery system according to claim 1 or 2,
The folded portion of the exterior film is the upper and lower two side portions of the plate-shaped battery cell,
The holding means has a plurality of the battery cells erected between the cooling plates arranged above and below so that one side of the folded portion of the exterior film of the battery cell is up and down and stacked sideways, The left and right ends and the ends of the cooling plate arranged at the top and bottom are respectively fitted and held on the cooling plate.
A vehicle battery cooling system. 請求項１〜請求項３のいずれか１項に記載の車両用バッテリシステムにおいて、
前記冷却プレートは、前記電池セルの前記外装フィルムの折り返し部分を嵌め込む嵌合溝を複数並列させて備える、
ことを特徴とする車両用バッテリ冷却システム。 The vehicle battery system according to any one of claims 1 to 3,
The cooling plate includes a plurality of fitting grooves arranged in parallel to fit the folded portion of the exterior film of the battery cell,
A vehicle battery cooling system.
JP2006347941A 2006-12-25 2006-12-25 Vehicular battery cooling system Pending JP2008159440A (en)

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