JP2013051099A - Module for battery temperature control - Google Patents

Module for battery temperature control Download PDF

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Publication number
JP2013051099A
JP2013051099A JP2011188122A JP2011188122A JP2013051099A JP 2013051099 A JP2013051099 A JP 2013051099A JP 2011188122 A JP2011188122 A JP 2011188122A JP 2011188122 A JP2011188122 A JP 2011188122A JP 2013051099 A JP2013051099 A JP 2013051099A
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Prior art keywords
battery
heat
temperature control
battery temperature
control module
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JP2011188122A
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Japanese (ja)
Inventor
Tomoyuki Hanada
知之 花田
Hitoshi Shimonosono
均 下野園
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Nissan Motor Co Ltd
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Nissan Motor Co Ltd
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Priority to JP2011188122A priority Critical patent/JP2013051099A/en
Priority to PCT/JP2012/068210 priority patent/WO2013031406A1/en
Publication of JP2013051099A publication Critical patent/JP2013051099A/en
Withdrawn legal-status Critical Current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
    • H01M10/65—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
    • H01M10/62—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
    • H01M10/64—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
    • H01M10/6556—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
    • H01M10/6567—Liquids
    • 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
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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
    • H01M10/6555—Rods or plates arranged between the 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
    • H01M10/66—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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a module for battery temperature control which enables efficient heat exchange.SOLUTION: A module for battery temperature control has a structure where a heat conduction material 7 is sandwiched so as to fit into cross section shapes of gaps formed multiple lamination type battery cells 1 are laminated. This structure increases a heat passing cross section area between the battery cells and a heat transmission part 10 in inclined parts 3. The heat conduction material is made of aluminum or the like and has water jackets 7a, 7b in a core material 8a. The heat conduction material is integrally molded with the heat transmission part. Thus, it is not necessary to combine each component and the number of the components and the assembly work hours are reduced. The module for the battery temperature control also has adhesion parts 8b, having heat conductivity and viscous elasticity, between each battery cell and the heat conduction material 7. Even when there is variations in vibrations and end part shapes of the battery cells, the heat conductivity and the adhesiveness are ensured.

Description

本発明は、バッテリの温度を調節可能なバッテリ温調用モジュールに関する。   The present invention relates to a battery temperature adjustment module capable of adjusting the temperature of a battery.

特許文献１には、バッテリセルの間に伝熱板を設け、この伝熱板の下に設けた熱交換部にロウ付けすることで、バッテリの熱を外部へ放出させるものが開示されている。   Patent Document 1 discloses a structure in which a heat transfer plate is provided between battery cells and the heat of the battery is released to the outside by brazing to a heat exchanging portion provided below the heat transfer plate. .

特開２００１−２３７０３号公報JP 2001-23703 A

しかしながら、特許文献１に開示の技術にあっては、薄肉の伝熱板を用いて伝熱基盤に熱伝導させているため、熱通過断面積が小さいことから熱抵抗が大きく、バッテリセルで発生した熱を効率よく熱交換部へ伝達することができないという問題があった。   However, in the technique disclosed in Patent Document 1, heat conduction is performed to the heat transfer base using a thin heat transfer plate, so that the thermal resistance is large because the heat passage cross-sectional area is small, and is generated in the battery cell. There is a problem in that the heat that is generated cannot be efficiently transferred to the heat exchange section.

本発明は、上記問題に着目してなされたもので、効率よく熱交換可能なバッテリ温調用モジュールを提供することを目的とする。   The present invention has been made paying attention to the above problem, and an object of the present invention is to provide a battery temperature control module capable of efficiently exchanging heat.

上記目的を達成するため、本発明のバッテリ温調用モジュールにあっては、複数のバッテリを積層した際に形成される隙間形状に沿って熱伝導材を配置し、この熱伝導材と密着して内部で冷媒を流動させることで熱交換を行なう熱交換部を備えた。   In order to achieve the above object, in the battery temperature control module of the present invention, a heat conductive material is arranged along a gap shape formed when a plurality of batteries are stacked, and is in close contact with the heat conductive material. A heat exchanging unit for exchanging heat by flowing a refrigerant inside was provided.

隙間形状に合わせた熱伝導材を設けたため、熱通過断面積を大きくすることができ、熱抵抗を小さくすることでバッテリにおいて発生した熱を効率よく熱交換部に伝達することができ、効率よくバッテリを温調することができる。   Because the heat conduction material matched to the gap shape is provided, the heat passage cross-sectional area can be increased, and the heat generated in the battery can be efficiently transferred to the heat exchange part by reducing the thermal resistance, and efficiently The temperature of the battery can be adjusted.

実施例１のバッテリ温調モジュールを備えたモジュール缶の外観図である。It is an external view of the module can provided with the battery temperature control module of Example 1. 実施例１の車両駆動用電池の構成を表す概略斜視図である。1 is a schematic perspective view illustrating a configuration of a vehicle driving battery of Example 1. FIG. 実施例１の伝熱性能と比較例の伝熱性能とを表す特性図である。It is a characteristic view showing the heat transfer performance of Example 1 and the heat transfer performance of a comparative example. 実施例２のバッテリパックの構成を表す概略図である。6 is a schematic diagram illustrating a configuration of a battery pack of Example 2. FIG. 実施例２の車両駆動用電池の構成を表す概略斜視図である。FIG. 6 is a schematic perspective view illustrating a configuration of a vehicle driving battery according to a second embodiment. 実施例３の車両駆動用電池の構成を表す概略斜視図である。6 is a schematic perspective view illustrating a configuration of a battery for driving a vehicle according to Embodiment 3. FIG. 実施例４のバッテリパックの構成を表す概略斜視図である。6 is a schematic perspective view illustrating a configuration of a battery pack according to Embodiment 4. FIG.

図１は実施例１のバッテリ温調モジュールを備えた車両の温調システムを表す概略図である。実施例１の車両はバッテリとモータを駆動源とする電気自動車である。この車両には、車両用空調システム１３と、複数のバッテリセル１が収装され駆動源となる車両駆動用電池５と、車両駆動用電池５を温調するのに必要な流体を生成する温調機構２０とを有する。   FIG. 1 is a schematic diagram illustrating a vehicle temperature control system including the battery temperature control module according to the first embodiment. The vehicle according to the first embodiment is an electric vehicle using a battery and a motor as drive sources. In this vehicle, a vehicle air conditioning system 13, a vehicle driving battery 5 in which a plurality of battery cells 1 are housed and serving as a driving source, and a temperature that generates a fluid necessary for controlling the temperature of the vehicle driving battery 5. Adjustment mechanism 20.

車両用空調システム１３は、コンデンサ１４と、冷媒圧縮機１５と、コンデンサ１４から熱を放出するために必要なファン１６と、減圧手段を有する冷媒蒸発器１８と、これらを接続する冷媒配管等から構成されている。流路切替バルブ１７は、車両用空調システム１３内に組み込まれており、冷流体生成装置２１の下流に設けられている。流路切替バルブ１７は、コンデンサ１４で冷却された冷媒の流れを冷媒蒸発器１８もしくは冷流体生成装置２１に切り替える。   The vehicle air conditioning system 13 includes a condenser 14, a refrigerant compressor 15, a fan 16 necessary for releasing heat from the condenser 14, a refrigerant evaporator 18 having decompression means, a refrigerant pipe connecting these, and the like. It is configured. The flow path switching valve 17 is incorporated in the vehicle air conditioning system 13 and is provided downstream of the cold fluid generator 21. The flow path switching valve 17 switches the flow of the refrigerant cooled by the condenser 14 to the refrigerant evaporator 18 or the cold fluid generator 21.

冷媒停止バルブ１９は、車両用空調システム１３に組み込まれており、冷流体生成装置２１の下流に設けられている。流路切替バルブ１７により冷媒蒸発器１８に冷媒が流れているときに作動し、冷媒蒸発器１８の出口から冷流体生成装置２１への冷媒が逆流するのを防止する。   The refrigerant stop valve 19 is incorporated in the vehicle air conditioning system 13 and is provided downstream of the cold fluid generator 21. The flow path switching valve 17 operates when the refrigerant is flowing into the refrigerant evaporator 18, and prevents the refrigerant from flowing back from the outlet of the refrigerant evaporator 18 to the cold fluid generator 21.

冷流体生成装置２１は、車両用空調システム１３及び温調機構２０の両方に跨って組み込まれており、それぞれ独立した回路構成とされている。車両用空調システム１３側は冷媒が流れており、温調機構２０側は流体が流れている。冷流体生成装置２１内部には、図示しない熱交換器が設けられており、コンデンサ１４で冷却された冷媒と、温調機構２０内を流れる液流体とで熱交換が行なわれ、温調機構２０内を流れる流体を冷却可能としている。   The cold fluid generation device 21 is incorporated across both the vehicle air conditioning system 13 and the temperature control mechanism 20, and has an independent circuit configuration. The refrigerant flows on the vehicle air conditioning system 13 side, and the fluid flows on the temperature adjustment mechanism 20 side. A heat exchanger (not shown) is provided inside the cold fluid generator 21, and heat exchange is performed between the refrigerant cooled by the condenser 14 and the liquid fluid flowing in the temperature adjustment mechanism 20, and the temperature adjustment mechanism 20. The fluid flowing inside can be cooled.

温調機構２０は、バッテリセル１を冷却するために必要な冷流体生成装置２１、バッテリセル１を加温するために必要な電気ヒータ２２、温調機構２０内を流れる流体の温度を検出する流体温検出手段２３、流体を輸送するための流体輸送ポンプ２４及びこれらを接続する冷媒配管等から構成されている。冷媒配管は車両駆動用電池５の伝熱部１０に設けられた配管１２と接続されている。   The temperature adjustment mechanism 20 detects the temperature of the cold fluid generator 21 necessary for cooling the battery cell 1, the electric heater 22 necessary for heating the battery cell 1, and the temperature of the fluid flowing in the temperature adjustment mechanism 20. The fluid temperature detection means 23, the fluid transport pump 24 for transporting the fluid, and the refrigerant pipe connecting these, etc. The refrigerant pipe is connected to a pipe 12 provided in the heat transfer section 10 of the vehicle driving battery 5.

電気ヒータ２２は、温調機構２０内に組み込まれており、バッテリセル１を加温するために温調機構２０内を流れる流体の温度を上昇させる。流体輸送ポンプ２４は、バッテリセル１を温調するために必要な流体を伝熱部１０に輸送する機能を有する。温度検出手段２５は、バッテリセル１に設けられており、バッテリセル１の温度を検出する。   The electric heater 22 is incorporated in the temperature adjustment mechanism 20 and raises the temperature of the fluid flowing in the temperature adjustment mechanism 20 in order to heat the battery cell 1. The fluid transport pump 24 has a function of transporting a fluid necessary for controlling the temperature of the battery cell 1 to the heat transfer unit 10. The temperature detection means 25 is provided in the battery cell 1 and detects the temperature of the battery cell 1.

制御装置１００は、温度検出手段２５により検出されたバッテリセル１の温度に基づいて冷却もしくは加温を判断し、上述の各種要素に対して制御信号を出力する。具体的には、冷却が必要な場合、車両用空調システム１３にて生成された冷媒と、温調機構２０内に流れる流体とを冷流体生成装置２１内にて熱交換し、温調機構２０内の流体を冷却する。そして、流体輸送ポンプ２４によって冷やされた流体を車両駆動用電池５に内包されるバッテリセル１の伝熱部１０に供給する。一方、加温が必要な場合、流体温検出手段２３にて検出された流体温に基づいて、温調機構２０内に組み込まれた電気ヒータ２２により流体を加温する。そして、加温された流体を流体輸送ポンプ２４によって車両駆動用電池５に内包される伝熱部１０に供給する。   The control device 100 determines cooling or heating based on the temperature of the battery cell 1 detected by the temperature detection means 25, and outputs a control signal to the various elements described above. Specifically, when cooling is necessary, the refrigerant generated in the vehicle air conditioning system 13 and the fluid flowing in the temperature adjustment mechanism 20 are heat-exchanged in the cold fluid generation device 21, and the temperature adjustment mechanism 20. Cool the fluid inside. Then, the fluid cooled by the fluid transport pump 24 is supplied to the heat transfer section 10 of the battery cell 1 included in the vehicle driving battery 5. On the other hand, when heating is required, the fluid is heated by the electric heater 22 incorporated in the temperature adjustment mechanism 20 based on the fluid temperature detected by the fluid temperature detection means 23. Then, the heated fluid is supplied to the heat transfer unit 10 included in the vehicle drive battery 5 by the fluid transport pump 24.

図２は実施例１の車両駆動用電池の構成を表す概略斜視図である。バッテリセル１は、内蔵物である電極材４及び電解液をラミネートパックしたラミネート型電池である。バッテリセル１の周辺部には、ラミネート溶着するための溶着代２を有する。また、バッテリセル１の中央には、電解液等が充填され板状であって厚肉の中心部２ａを有する。また、電極材４を積層した端部には、溶着代２と中心部２ａとの間に形成された傾斜部３を有する。車両駆動用電池５は、このラミネート型のバッテリセル１を積層したバッテリパックを収装したものであり、バッテリセル１の積層時に溶着代２と傾斜部３によって形成される空隙６の断面形状に合わせて熱伝導材７を挟み込む構成とされている。これにより、傾斜部３においてバッテリセル１と伝熱部１０との間の熱通過断面積を大きくしている。   FIG. 2 is a schematic perspective view illustrating the configuration of the vehicle driving battery according to the first embodiment. The battery cell 1 is a laminate type battery in which a built-in electrode material 4 and an electrolyte solution are laminated. A peripheral portion of the battery cell 1 has a welding allowance 2 for laminate welding. Further, the center of the battery cell 1 is filled with an electrolytic solution or the like and has a plate-like and thick central portion 2a. Further, the end portion where the electrode material 4 is laminated has an inclined portion 3 formed between the welding allowance 2 and the center portion 2a. The vehicle driving battery 5 is a battery pack in which the laminated battery cells 1 are stacked, and has a cross-sectional shape of a gap 6 formed by the welding allowance 2 and the inclined portion 3 when the battery cells 1 are stacked. In addition, the heat conductive material 7 is sandwiched. Thereby, in the inclination part 3, the heat passage cross-sectional area between the battery cell 1 and the heat-transfer part 10 is enlarged.

熱伝導材７は熱伝導性の良好なアルミ材料等で形成され、板状に延在される基材７０と、基材７０から上方に突出形成される芯材８ａと、芯材８ａの外側に設けられ、バッテリセル１の表面と熱伝導材７との密着性を向上させるために熱伝導性シリコン等をコーティングした粘着部８ｂとを有する。粘着部８ｂは、絶縁材であることから、電極材の周囲にも設置することができ、放熱効果を更に高めている。熱伝導材７は、芯材８ａの内部にウォータージャケット７ａ，７ｂを有し、これにより冷却性能を向上している。矢視Ａに示すように、実施例１では、基材７０内に形成されたウォータージャケット７ａと芯材８ａの内部にまで形成されたウォータージャケット７ｂとを備えたタイプＰＴ１と、基材７０内にのみウォータージャケット７ａを形成したタイプＰＴ２とが考えられる。これらは要求性能，強度及びコスト等に応じて適宜設定可能である。   The heat conductive material 7 is formed of an aluminum material or the like having good heat conductivity, and a base material 70 extending in a plate shape, a core material 8a formed to protrude upward from the base material 70, and the outside of the core material 8a. And an adhesive portion 8b coated with thermally conductive silicon or the like in order to improve the adhesion between the surface of the battery cell 1 and the thermally conductive material 7. Since the adhesive portion 8b is an insulating material, it can be installed around the electrode material, further enhancing the heat dissipation effect. The heat conductive material 7 has water jackets 7a and 7b inside the core material 8a, thereby improving the cooling performance. As shown in the arrow A, in Example 1, the type PT1 including the water jacket 7a formed in the base material 70 and the water jacket 7b formed up to the inside of the core material 8a, The type PT2 in which the water jacket 7a is formed only on the surface is conceivable. These can be appropriately set according to required performance, strength, cost, and the like.

図３は実施例１の伝熱性能と比較例の伝熱性能とを表す特性図である。尚、比較例とは、実施例１のような熱伝導材７を備えていないタイプである。バッテリセル１は、充放電時に１０％程度の収縮があり、その影響により伝熱部１０とバッテリセル１との間に空気層が生じる。この場合、熱伝導は空気層を介してしか行なわれないため、熱抵抗も高くなる。一方、実施例１では粘着部８ｂにより収縮に伴う変形に追従して密着するため、熱伝導を確保でき、熱抵抗も小さくなる。以上から、バッテリセル１と伝熱部１０との間の密着度の関係を考慮すると、熱伝導材７を備えたことで２０％程度の性能向上を図ることが可能となる。また、絶縁材で構成していることから電極部付近にも設置することができ、更に性能向上を図ることができる。   FIG. 3 is a characteristic diagram showing the heat transfer performance of Example 1 and the heat transfer performance of the comparative example. In addition, a comparative example is a type which is not provided with the heat conductive material 7 like Example 1. FIG. The battery cell 1 contracts by about 10% during charging and discharging, and an air layer is generated between the heat transfer unit 10 and the battery cell 1 due to the influence. In this case, since heat conduction is performed only through the air layer, the thermal resistance is also increased. On the other hand, in Example 1, since the adhesive part 8b closely adheres to the deformation accompanying the contraction, heat conduction can be ensured and the thermal resistance is also reduced. From the above, considering the relationship of the degree of adhesion between the battery cell 1 and the heat transfer section 10, the provision of the heat conductive material 7 can improve the performance by about 20%. In addition, since it is made of an insulating material, it can be installed in the vicinity of the electrode portion, and the performance can be further improved.

以上説明したように、実施例１にあっては、下記の作用効果が得られる。
（１）複数のバッテリセル１（バッテリ）を積層した車両駆動用電池５（バッテリモジュール）と、バッテリセル１を積層した際に形成される隙間形状に沿って配置された熱伝導材７と、熱伝導材７と密着し、内部で冷媒を流動させることで熱交換を行なう伝熱部１０（熱交換部）と、を備えた。
よって、空間形状に合わせた熱伝導材を設けたため、熱通過断面積を大きくすることができ、熱抵抗を小さくすることでバッテリセル１において発生した熱を効率よく伝熱部１０に伝達することができ、効率よくバッテリセル１を温調することができる。 As described above, in the first embodiment, the following operational effects can be obtained.
(1) A vehicle driving battery 5 (battery module) in which a plurality of battery cells 1 (batteries) are stacked, a heat conductive material 7 disposed along a gap shape formed when the battery cells 1 are stacked, A heat transfer section 10 (heat exchange section) that is in close contact with the heat conductive material 7 and performs heat exchange by flowing a refrigerant inside.
Therefore, since the heat conducting material matched to the space shape is provided, the heat passage cross-sectional area can be increased, and the heat generated in the battery cell 1 can be efficiently transmitted to the heat transfer section 10 by reducing the thermal resistance. The temperature of the battery cell 1 can be controlled efficiently.

（２）バッテリセル１は、外縁に薄肉の溶着代２（周辺部）と、厚肉の中心部と、溶着代２と中心部２ａとを接続する傾斜部３と、を有するラミネート型のバッテリセルであり、熱伝導材７は、バッテリセル１を積層した際に溶着代２と傾斜部３との間に形成される空間内であって傾斜部３に接するように配置することとした。
よって、バッテリセル１の傾斜部３を用いて熱伝導させるため、熱通過断面積を大きく撮ることができ、熱伝導における熱抵抗を小さくすることで効率よくバッテリセル１を温調することができる。また、バッテリセル１の中央部２ａ間に熱伝導材を備えていないため、バッテリパックを大型化することなく、温調効率を高めることができる。 (2) The battery cell 1 is a laminate-type battery having a thin welding margin 2 (peripheral portion), a thick central portion, and an inclined portion 3 connecting the welding margin 2 and the central portion 2a on the outer edge. The heat conductive material 7 is a cell and is arranged so as to be in contact with the inclined portion 3 in a space formed between the welding allowance 2 and the inclined portion 3 when the battery cells 1 are stacked.
Therefore, since heat conduction is performed using the inclined portion 3 of the battery cell 1, a large heat passage cross-sectional area can be taken, and the temperature of the battery cell 1 can be efficiently controlled by reducing the thermal resistance in heat conduction. . Moreover, since the heat conductive material is not provided between the center parts 2a of the battery cells 1, the temperature control efficiency can be increased without increasing the size of the battery pack.

（３）熱伝導材７は、伝熱部１０と一体成形されている。よって、各部品を組み合わせる必要がなく、部品点数の削減及び組み立て工数の低減を図ることができる。また、芯材８ａ内部にウォータージャケット７ｂを形成することができ、更に温調性能の向上を図ることができる。   (3) The heat conductive material 7 is integrally formed with the heat transfer unit 10. Therefore, it is not necessary to combine the parts, and the number of parts and the number of assembly steps can be reduced. Moreover, the water jacket 7b can be formed inside the core material 8a, and the temperature control performance can be further improved.

（４）バッテリセル１と熱伝導材７との間に、熱伝導性及び粘弾性を有する粘着部８ｂ（弾性層）を有する。よって、バッテリセル１が振動したとしても密着状態を確保でき、バッテリセル１と熱伝導材７との間の熱伝導性を維持することができる。また、バッテリセル１の端部形状（電極材４等の形状）にばらつきがあったとしても、それらばらつきを変形により吸収することができ、密着性を確保できる。   (4) Between the battery cell 1 and the heat conductive material 7, it has the adhesion part 8b (elastic layer) which has heat conductivity and viscoelasticity. Therefore, even if the battery cell 1 vibrates, a close contact state can be secured, and the thermal conductivity between the battery cell 1 and the heat conductive material 7 can be maintained. Further, even if there is a variation in the end shape of the battery cell 1 (the shape of the electrode material 4 or the like), the variation can be absorbed by deformation, and adhesion can be ensured.

〔実施例２〕
次に、実施例２について説明する。基本的な構成は実施例１と同じであるため、異なる点についてのみ説明する。図４は実施例２のバッテリパックの構成を表す概略図、図５は実施例２の車両駆動用電池の構成を表す概略斜視図である。実施例２のバッテリパックは、バッテリセル１を積層し、その周囲を枠体９によって覆う構成としたものである。枠体９は実施例１の熱伝導材７と同様の役割を果たすものであり、熱伝導性の良好なアルミ材料等で形成されている。枠体９の内周には、バッテリセル１の外周全体に形成された空隙６にそれぞれ挟み込まれる芯材８ａと、粘着部８ｂとが設けられ、バッテリセル１の周辺全体に亘って熱伝導を可能としている。枠体９は伝熱部１０と密着して取り付けられている。これにより、実施例１のようにバッテリセル１の一辺のみに熱伝導材７を設けた構成に比べて更に良好な熱伝導性能を得ることができ、効率的なバッテリ温調を達成することができる。 [Example 2]
Next, Example 2 will be described. Since the basic configuration is the same as that of the first embodiment, only different points will be described. FIG. 4 is a schematic diagram illustrating the configuration of the battery pack according to the second embodiment. FIG. 5 is a schematic perspective view illustrating the configuration of the vehicle driving battery according to the second embodiment. The battery pack of Example 2 has a configuration in which battery cells 1 are stacked and the periphery thereof is covered with a frame body 9. The frame body 9 plays the same role as the heat conductive material 7 of the first embodiment, and is formed of an aluminum material having a good heat conductivity. On the inner periphery of the frame body 9, there are provided a core material 8 a sandwiched between gaps 6 formed on the entire outer periphery of the battery cell 1, and an adhesive portion 8 b, and heat conduction is performed over the entire periphery of the battery cell 1. It is possible. The frame body 9 is attached in close contact with the heat transfer section 10. Thereby, compared with the structure which provided the heat conductive material 7 only in the one side of the battery cell 1 like Example 1, more favorable heat conductive performance can be obtained, and efficient battery temperature control can be achieved. it can.

以上説明したように、実施例２にあっては下記の作用効果が得られる。
（５）熱伝導材は、バッテリセル１の全周を囲むように形成された枠体である。よって、バッテリセル１の一辺のみに熱伝導材を形成した場合に比べて熱伝導効率を向上することができる。 As described above, the following operational effects are obtained in the second embodiment.
(5) The heat conductive material is a frame formed so as to surround the entire circumference of the battery cell 1. Therefore, compared with the case where a heat conductive material is formed only on one side of the battery cell 1, the heat conduction efficiency can be improved.

〔実施例３〕
次に、実施例３について説明する。基本的な構成は実施例２と同様であるため、異なる点についてのみ説明する。図６は実施例３の車両駆動用電池の構成を表す概略斜視図である。実施例２では、枠体９を伝熱部１０と密着して取り付けたが、実施例３では、枠体９の一辺を延在させた延在部９ａを形成し、この延在部９ａに配管１２が貫通する貫通孔１１を形成した点が異なる。このように、全ての枠体９に貫通するように配管１２を貫通孔１１に通すことで、実施例２のように伝熱部１０を別途構成することなく、簡易な構成で枠体９と冷媒との間の熱交換を達成できる。 Example 3
Next, Example 3 will be described. Since the basic configuration is the same as that of the second embodiment, only different points will be described. FIG. 6 is a schematic perspective view showing the configuration of the vehicle drive battery of the third embodiment. In the second embodiment, the frame body 9 is attached in close contact with the heat transfer section 10, but in the third embodiment, an extension section 9 a is formed by extending one side of the frame body 9, and the extension section 9 a The difference is that a through hole 11 through which the pipe 12 passes is formed. Thus, by passing the pipes 12 through the through holes 11 so as to penetrate all the frame bodies 9, the frame body 9 can be configured with a simple configuration without separately configuring the heat transfer section 10 as in the second embodiment. Heat exchange with the refrigerant can be achieved.

以上説明したように、実施例３にあっては下記の作用効果が得られる。
（６）枠体９の一辺に、冷媒を流動させる配管を保持する貫通孔１１（配管保持部）を形成した。よって、簡易な構成で枠体９と冷媒との間の熱交換を達成できる。 As described above, the following effects are obtained in the third embodiment.
(6) A through hole 11 (pipe holding portion) that holds a pipe through which the refrigerant flows is formed on one side of the frame body 9. Therefore, heat exchange between the frame 9 and the refrigerant can be achieved with a simple configuration.

〔実施例４〕
次に、実施例４について説明する。基本的な構成は実施例３と同様であるため、異なる点についてのみ説明する。図７は実施例４のバッテリパックの構成を表す概略斜視図である。実施例３では、延在部９ａに貫通孔１１を形成し、これに配管１２を通す構成としたが、実施例４では、貫通孔１１に代えて切り欠き１１'（配管保持部）を形成し、切り欠き１１'と配管１２とを密着させることで熱伝導を行なう点が異なる。これにより、実施例２のように伝熱部１０を別途構成することなく、簡易な構成で枠体９と冷媒との間の熱交換を達成できる。 Example 4
Next, Example 4 will be described. Since the basic configuration is the same as that of the third embodiment, only different points will be described. FIG. 7 is a schematic perspective view illustrating the configuration of the battery pack according to the fourth embodiment. In the third embodiment, the through hole 11 is formed in the extending portion 9a and the pipe 12 is passed through the extended portion 9a. However, in the fourth embodiment, a notch 11 ′ (pipe holding portion) is formed instead of the through hole 11. However, the heat conduction is different by bringing the notch 11 ′ and the pipe 12 into close contact. Thus, heat exchange between the frame body 9 and the refrigerant can be achieved with a simple configuration without separately configuring the heat transfer section 10 as in the second embodiment.

以上、実施例及び変形例に基づいて本発明を説明したが、上記実施形態に限らず、他の構成であっても本発明に含まれる。例えば、実施例では、バッテリセル１の冷却をメインに説明したが、冷却に限らず、加温する場合であっても同様に適用可能である。また、実施例ではラミネート型のバッテリセルを例に挙げて説明したが、他の形状もしくはタイプのバッテリセルを複数積み重ねる構成であれば適用可能である。   As mentioned above, although this invention was demonstrated based on the Example and the modification, not only the said embodiment but another structure is also included in this invention. For example, in the embodiment, the cooling of the battery cell 1 has been mainly described. In the embodiment, the laminate type battery cell is described as an example, but the present invention is applicable to any configuration in which a plurality of battery cells of other shapes or types are stacked.

１ バッテリセル
２ 溶着代
２ａ 中心部
３ 傾斜部
４ 電極材
５ 車両駆動用電池
６ 空隙
７ 熱伝導材
７ａ，７ｂ ウォータージャケット
８ａ 芯材
８ｂ 粘着部
９ 枠体
９ａ 延在部
１０ 伝熱部
１１ 貫通孔
１２ 配管
２０ 温調機構
２１ 冷流体生成装置
２２ 電気ヒータ
２３ 流体温検出手段
２４ 流体輸送ポンプ
２５ 温度検出手段
７０ 基材 DESCRIPTION OF SYMBOLS 1 Battery cell 2 Welding allowance 2a Center part 3 Inclined part 4 Electrode material 5 Battery 6 for vehicle drive Space | gap 7 Heat conductive material 7a, 7b Water jacket 8a Core material 8b Adhesive part 9 Frame 9a Extension part 10 Heat-transfer part 11 Through Hole 12 Pipe 20 Temperature control mechanism 21 Cold fluid generator 22 Electric heater 23 Fluid temperature detection means 24 Fluid transport pump 25 Temperature detection means 70 Base material

Claims (6)

複数のバッテリを積層したバッテリモジュールと、
前記バッテリを積層した際に形成される隙間形状に沿って配置された熱伝導材と、
前記熱伝導材と密着し、内部で冷媒を流動させることで熱交換を行なう熱交換部と、
を備えたことを特徴とするバッテリ温調用モジュール。 A battery module in which a plurality of batteries are stacked;
A heat conducting material arranged along a gap shape formed when the batteries are stacked;
A heat exchanging part that is in close contact with the heat conducting material and exchanges heat by flowing a refrigerant inside;
A battery temperature control module comprising: 請求項１に記載のバッテリ温調用モジュールにおいて、
前記バッテリは、外縁に薄肉の周辺部と、厚肉の中心部と、前記周辺部と前記中心部とを接続する傾斜部と、を有するラミネート型のバッテリセルであり、
前記熱伝導材は、前記ラミネートセルを積層した際に前記周辺部と前記傾斜部との間に形成される空間内であって前記傾斜部に接するように配置することを特徴とするバッテリ温調用モジュール。 The battery temperature control module according to claim 1,
The battery is a laminate-type battery cell having a thin peripheral portion on the outer edge, a thick central portion, and an inclined portion connecting the peripheral portion and the central portion,
The heat conducting material is disposed in a space formed between the peripheral portion and the inclined portion when the laminate cell is laminated, and is disposed so as to be in contact with the inclined portion. module. 請求項１又は２に記載のバッテリ温調用モジュールにおいて、
前記熱伝導材は、前記熱交換部と一体成形されていることを特徴とするバッテリ温調用モジュール。 The battery temperature control module according to claim 1 or 2,
The battery temperature control module, wherein the heat conducting material is integrally formed with the heat exchange part. 請求項１ないし３いずれか１つに記載のバッテリ温調用モジュールにおいて、
前記バッテリと前記熱伝導材との間に、熱伝導性及び粘弾性を有する弾性層を有することを特徴とするバッテリ温調用モジュール。 The battery temperature control module according to any one of claims 1 to 3,
A battery temperature control module comprising an elastic layer having thermal conductivity and viscoelasticity between the battery and the thermal conductive material. 請求項１ないし４いずれか一つに記載のバッテリ温調用モジュールにおいて、
前記熱伝導材は、前記バッテリの全周を囲むように形成された枠体であることを特徴とするバッテリ温調用モジュール。 The battery temperature control module according to any one of claims 1 to 4,
The battery temperature control module, wherein the heat conducting material is a frame formed so as to surround the entire circumference of the battery. 請求項５に記載のバッテリ温調用モジュールにおいて、
前記枠体の一辺に、冷媒を流動させる配管を保持する配管保持部を形成したことを特徴とするバッテリ温調用モジュール。 The battery temperature control module according to claim 5,
A battery temperature control module, wherein a pipe holding part for holding a pipe for flowing a refrigerant is formed on one side of the frame.
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