WO2015008747A1 - Battery module, and battery-module production method - Google Patents

Battery module, and battery-module production method Download PDF

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WO2015008747A1
WO2015008747A1 PCT/JP2014/068785 JP2014068785W WO2015008747A1 WO 2015008747 A1 WO2015008747 A1 WO 2015008747A1 JP 2014068785 W JP2014068785 W JP 2014068785W WO 2015008747 A1 WO2015008747 A1 WO 2015008747A1
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battery module
conductive member
heat
heat conductive
module according
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PCT/JP2014/068785
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French (fr)
Japanese (ja)
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淳也 宮田
睦 桐野
直裕 青山
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三井造船株式会社
三井造船システム技研株式会社
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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
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • 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
    • 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
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

The present invention addresses the problem of efficiently suppressing temperature increases accompanying charging and discharging, in a battery module having, stacked therein, laminate cells provided with electrodes. This battery module (1) is characterized by having, stacked therein: laminate cells (4) provided with electrodes (12, 13); and heat-conductive members (5). The battery module (1) is further characterized in that: electrode terminals (2, 3), which connect with the electrodes (12, 13), are provided to a first surface (14) of a housing (16); and a heat-dissipation part (7), which comes into contact with the heat-conductive members (5), is provided to a second surface (15) of the housing (16), said second surface being at a side opposite to the first surface (14).

Description

電池モジュール及び電池モジュールの製造方法Battery module and battery module manufacturing method
　本発明は、電極を有するラミネートセルを積層して備える電池モジュール及び電池モジュールの製造方法に関する。 The present invention relates to a battery module provided with laminated laminate cells having electrodes and a method for manufacturing the battery module.
　従来から、リチウムイオン二次電池等の電池モジュールでは、電池モジュールの充放電に伴って電流が流れると、電池モジュールの内部抵抗に起因する発熱が生じる。この発熱により電池モジュールの温度が上昇するほど、電池モジュールは性能劣化を起こしやすくなる。　
　このため、電池モジュールの温度上昇を抑制するために、例えば、特許文献１には、電極端子から絶縁性を有する熱伝導性部材を介して電池容器に熱を伝える缶型の二次電池モジュールが開示されている。 Conventionally, in a battery module such as a lithium ion secondary battery, when current flows along with charging / discharging of the battery module, heat is generated due to the internal resistance of the battery module. As the temperature of the battery module rises due to this heat generation, the battery module is likely to deteriorate in performance.
For this reason, in order to suppress the temperature rise of a battery module, for example, Patent Document 1 discloses a can-type secondary battery module that transfers heat from an electrode terminal to a battery container through an insulating heat conductive member. It is disclosed.
　また、例えば、特許文献２及び特許文献３に開示されるように、リチウムイオン二次電池等の電池モジュールとして、電極を有するラミネートセルを積層して備える電池モジュールが使用されている。 For example, as disclosed in Patent Document 2 and Patent Document 3, as a battery module such as a lithium ion secondary battery, a battery module including stacked laminate cells having electrodes is used.
特開２０１２－１８６１１４号公報JP 2012-186114 A 特開２０１１－１８１３６９号公報JP 2011-181369 A 特開２０１２－２４８３７４号公報JP 2012-248374 A
　特許文献２及び特許文献３に開示されるような電極を有するラミネートセルを積層して備える電池モジュールは、積層したラミネートセルが筐体に入れられており、特許文献１に開示されるような缶型の二次電池モジュールとは構成が異なる。一般的に、ラミネートセルを積層して備える構成の電池モジュールにおいては、充放電に伴う温度上昇を抑制するのは困難であった。例えば、このような構成の電池モジュールの温度上昇を抑制するために、特許文献１に開示されるような、電極と接続される電極端子から絶縁性を有する熱伝導性部材を介して電池容器に熱を伝える技術を採用しても、電極と熱伝導性部材との接触面積は小さくなる。このため、電池モジュールの温度上昇を抑制する効果は不十分である。 A battery module provided with laminated laminate cells having electrodes as disclosed in Patent Document 2 and Patent Document 3 has a laminated laminate cell placed in a casing, and a can as disclosed in Patent Document 1 The configuration is different from the type of secondary battery module. In general, in a battery module having a configuration in which laminated cells are stacked, it is difficult to suppress a temperature rise associated with charging and discharging. For example, in order to suppress the temperature rise of the battery module having such a configuration, as disclosed in Patent Document 1, the electrode terminal connected to the electrode is connected to the battery container through an insulating heat conductive member. Even if a technique for transferring heat is employed, the contact area between the electrode and the thermally conductive member is reduced. For this reason, the effect which suppresses the temperature rise of a battery module is inadequate.
　一方、特許文献３に開示される電池モジュールは、ラミネートセルと金属製の熱伝導板とを交互に積層し、バネ部を介して、熱伝導板から筐体に伝熱可能な構成である。　
　ここで、電池モジュールは、複数並べて又は積み重ねて使用される場合があるが、このような場合、一般的に、筐体の電極端子が設けられた面が同じ向きになるように、複数並べ又は積み重ねられる。　
　しかしながら、特許文献３に開示される電池モジュールは、筐体の電極端子が設けられた面から見て側面側に伝熱可能な構成であるため、該電池モジュールを筐体の電極端子が設けられた面から見て側面側に複数並べて配置すると、隣接する電池モジュール側に熱が伝わり、熱が籠り易い。すなわち、該電池モジュールは効率的に充放電に伴う温度上昇を抑制することができる構成であるとは言えない。 On the other hand, the battery module disclosed in Patent Document 3 has a configuration in which laminate cells and metal heat conduction plates are alternately stacked, and heat can be transferred from the heat conduction plate to the housing via a spring portion.
Here, there are cases where a plurality of battery modules are used side by side or stacked, but in such a case, in general, the plurality of battery modules are arranged or arranged so that the surfaces on which the electrode terminals of the housing are provided are in the same direction. Stacked.
However, since the battery module disclosed in Patent Document 3 has a configuration capable of transferring heat to the side as viewed from the surface where the electrode terminal of the housing is provided, the battery module is provided with the electrode terminal of the housing. If a plurality are arranged side by side on the side as viewed from the side, the heat is transferred to the adjacent battery module side, and the heat is easily generated. In other words, it cannot be said that the battery module has a configuration capable of efficiently suppressing a temperature increase associated with charge / discharge.
　そこで、本発明の目的は、電極を有するラミネートセルを積層して備える電池モジュールにおいて、効率的に充放電に伴う温度上昇を抑制することである。 Therefore, an object of the present invention is to efficiently suppress an increase in temperature associated with charging / discharging in a battery module provided with laminated laminate cells having electrodes.
　上記課題を解決するための本発明の第１の態様に係る電池モジュールは、電極を有するラミネートセルと、熱伝導性部材と、を積層して備え、筐体の第１の面に、前記電極と接続する電極端子を備え、前記第１の面と反対側の面である前記筐体の第２の面に、前記熱伝導性部材と接触する熱放出部を備えることを特徴とする。 A battery module according to a first aspect of the present invention for solving the above-described problem includes a laminate cell having an electrode and a thermally conductive member, and the electrode is disposed on a first surface of a housing. And a heat-dissipating part in contact with the thermally conductive member on the second surface of the housing, which is the surface opposite to the first surface.
　ここで、「前記第１の面と反対側の面」とは、前記第１の面と反対側の面であればよく、前記第１の面と平行な面には限定されない意味である。　
　本態様によれば、前記第２の面に前記熱伝導性部材と接触する熱放出部を備えるので、前記ラミネートセルの熱を、前記第１の面と反対側の面である前記第２の面の方向への一方向に伝えることができる。このため、前記電池モジュールを筐体の電極端子が設けられた前記第１の面が同じ向きになるように複数並べ又は積み重ねた場合、これら複数の電池モジュールの熱は隣接する電池モジュール側に伝わらず、熱が籠り難い。すなわち、効率的に充放電に伴う温度上昇を抑制することができる。 Here, the “surface opposite to the first surface” may be a surface opposite to the first surface, and is not limited to a surface parallel to the first surface.
According to this aspect, since the second surface includes the heat release portion that contacts the thermally conductive member, the heat of the laminate cell is the surface opposite to the first surface. It can be transmitted in one direction toward the surface. For this reason, when a plurality of the battery modules are arranged or stacked such that the first surfaces provided with the electrode terminals of the housing are in the same direction, the heat of the plurality of battery modules is transferred to the adjacent battery module side. It's hard to burn. That is, the temperature rise accompanying charging / discharging can be suppressed efficiently.
　本発明の第２の態様に係る電池モジュールは、前記第１の態様において、前記熱伝導性部材は、可撓性を有することを特徴とする。 The battery module according to a second aspect of the present invention is characterized in that, in the first aspect, the thermally conductive member is flexible.
　本態様によれば、前記熱伝導性部材は可撓性を有するので、前記熱伝導性部材を前記熱放出部に押し付けるという簡単な方法で、前記熱伝導性部材と前記熱放出部とを面接触させるなど確りと接触させることができ、効率よく充放電に伴う温度上昇を抑制することができる。 According to this aspect, since the heat conductive member has flexibility, the heat conductive member and the heat discharge portion are faced by a simple method of pressing the heat conductive member against the heat discharge portion. It is possible to make contact with certainty, for example, to make contact, and it is possible to efficiently suppress an increase in temperature due to charge / discharge.
　本発明の第３の態様に係る電池モジュールは、前記第１又は第２の態様において、前記熱伝導性部材は、粘着性を有することを特徴とする。 The battery module according to a third aspect of the present invention is characterized in that, in the first or second aspect, the thermally conductive member has adhesiveness.
　ここで、「前記熱伝導性部材は、粘着性を有する」とは、前記熱伝導性部材が粘着性を有する材料を用いて構成される場合のほか、前記熱伝導性部材に粘着性物質を付着させた構成も含む意味である。　
　本態様によれば、前記熱伝導性部材は粘着性を有するので、前記熱伝導性部材を前記熱放出部に貼り付けるという簡単な方法で、前記熱伝導性部材と前記熱放出部とを確りと接触させることができ、効率よく充放電に伴う温度上昇を抑制することができる。 Here, “the thermally conductive member has adhesiveness” means that the thermally conductive member is made of an adhesive material, and an adhesive substance is added to the thermally conductive member. It is meant to include the attached structure.
According to this aspect, since the heat conductive member has adhesiveness, the heat conductive member and the heat discharge portion can be confirmed by a simple method of attaching the heat conductive member to the heat discharge portion. The temperature rise accompanying charging / discharging can be efficiently suppressed.
　本発明の第４の態様に係る電池モジュールは、前記第１から第３のいずれか１つの態様において、前記熱伝導性部材は、絶縁性であることを特徴とする。 The battery module according to a fourth aspect of the present invention is characterized in that, in any one of the first to third aspects, the thermally conductive member is insulative.
　本態様によれば、前記熱伝導性部材は絶縁性であるので、熱放出部への予期せぬ電流の発生や隣接セルとの短絡電流の発生を抑制することができる。 According to this aspect, since the heat conductive member is insulative, it is possible to suppress the occurrence of an unexpected current to the heat release portion and the occurrence of a short-circuit current with an adjacent cell.
　本発明の第５の態様に係る電池モジュールは、前記第１から第４のいずれか１つの態様において、前記熱伝導性部材は、熱伝導率が１．０Ｗ／ｍ・Ｋ以上であることを特徴とする。 In the battery module according to the fifth aspect of the present invention, in any one of the first to fourth aspects, the thermal conductive member has a thermal conductivity of 1.0 W / m · K or more. Features.
　本態様によれば、前記熱伝導性部材は熱伝導率が１．０Ｗ／ｍ・Ｋ以上であるので、充放電に伴う前記ラミネートセルの熱を効率的に前記熱放出部に伝えることができ、効率よく充放電に伴う温度上昇を抑制することができる。 According to this aspect, since the thermal conductivity member has a thermal conductivity of 1.0 W / m · K or more, the heat of the laminate cell accompanying charging / discharging can be efficiently transmitted to the heat release portion. And the temperature rise accompanying charging / discharging can be suppressed efficiently.
　本発明の第６の態様に係る電池モジュールは、前記第１から第５のいずれか１つの態様において、前記熱伝導性部材と前記熱放出部とは、面接触していることを特徴とする。 In the battery module according to a sixth aspect of the present invention, in any one of the first to fifth aspects, the thermal conductive member and the heat release portion are in surface contact. .
　本態様によれば、前記熱伝導性部材と前記熱放出部とは面接触しているので、前記熱伝導性部材から前記熱放出部に熱を効率的に伝えることができ、効率よく充放電に伴う温度上昇を抑制することができる。 According to this aspect, since the heat conductive member and the heat release portion are in surface contact, heat can be efficiently transferred from the heat conductive member to the heat discharge portion, and charging and discharging can be performed efficiently. It is possible to suppress the temperature rise associated with.
　本発明の第７の態様に係る電池モジュールは、前記第１から第６のいずれか１つの態様において、前記熱放出部は、フィン状の金属で構成されていることを特徴とする。 The battery module according to a seventh aspect of the present invention is characterized in that, in any one of the first to sixth aspects, the heat release part is made of a fin-like metal.
　本態様によれば、前記熱放出部はフィン状の金属で構成されている。このため、前記熱放出部の熱放出効果は高いので、効率よく充放電に伴う温度上昇を抑制することができる。 According to this aspect, the heat release portion is made of a fin-like metal. For this reason, since the heat-dissipation effect of the heat-dissipating part is high, it is possible to efficiently suppress the temperature rise associated with charge / discharge.
　本発明の第８の態様に係る電池モジュールは、前記第１から第７のいずれか１つの態様において、補強部材を備え、前記ラミネートセルと、前記熱伝導性部材と、前記補強部材と、を積層して備えていることを特徴とする。 The battery module according to an eighth aspect of the present invention is the battery module according to any one of the first to seventh aspects, comprising a reinforcing member, the laminate cell, the thermally conductive member, and the reinforcing member. It is characterized by being provided with being laminated.
　ここで、「前記ラミネートセルと、前記熱伝導性部材と、前記補強部材と、を積層して備え」とは、各々が順番に積層される構成のほか、各々が順序不同に積層される構成も含む意味である。　
　本態様によれば、補強部材を前記ラミネートセルと積層して備える。このため、前記熱伝導性部材の強度を強くしたうえで前記ラミネートセルに密着させるという高度な技術を採用する必要がなくなるとともに、前記ラミネートセルが過放電または過充電された際の膨張を該補強部材により抑制可能になる。すなわち、低コスト化と、前記ラミネートセルの膨張の抑制及び前記ラミネートセルに対するストレスの抑制と、が可能になる。 Here, “the laminate cell, the thermally conductive member, and the reinforcing member are provided by stacking” is a configuration in which each is stacked in order, in addition to a configuration in which each is stacked in order. It also includes the meaning.
According to this aspect, the reinforcing member is provided by being laminated with the laminate cell. For this reason, it is not necessary to adopt an advanced technique of increasing the strength of the heat conductive member and then bringing it into close contact with the laminate cell, and the expansion when the laminate cell is overdischarged or overcharged is reinforced. It can be suppressed by the member. That is, cost reduction, suppression of the expansion of the laminate cell, and suppression of stress on the laminate cell can be achieved.
　本発明の第９の態様に係る電池モジュールの製造方法は、電極を有するラミネートセルと、可撓性を有する熱伝導性部材と、を積層して備え、筐体の第１の面に、前記電極と接続する電極端子を備え、前記第１の面と反対側の面である前記筐体の第２の面に、前記熱伝導性部材と接触する熱放出部を備える電池モジュールの製造方法であって、前記ラミネートセルと前記熱伝導性部材とが積層された積層物を前記第１の面側から前記第２の面側に挿入し、前記熱伝導性部材と前記熱放出部とを面接触させる挿入工程と、を有することを特徴とする。 A method for manufacturing a battery module according to a ninth aspect of the present invention includes a laminate cell having an electrode and a heat conductive member having flexibility, and the first surface of a housing includes the above-described laminate. A method for manufacturing a battery module, comprising: an electrode terminal connected to an electrode; and a heat release portion in contact with the heat conductive member on a second surface of the housing, which is a surface opposite to the first surface. A laminate in which the laminate cell and the heat conductive member are laminated is inserted from the first surface side to the second surface side, and the heat conductive member and the heat release portion are disposed on the surface. And an insertion step for bringing it into contact.
　本態様によれば、前記積層物を挿入するという簡単な方法で、前記熱伝導性部材と前記熱放出部とを面接触させることができ、効率よく充放電に伴う温度上昇を抑制することができる。 According to this aspect, the heat conductive member and the heat release portion can be brought into surface contact with each other by a simple method of inserting the laminate, and it is possible to efficiently suppress a temperature increase due to charge / discharge. it can.
　本発明の第１０の態様に係る電池モジュールの製造方法は、電極を有するラミネートセルと、粘着性を有する熱伝導性部材と、を積層して備え、筐体の第１の面に、前記電極と接続する電極端子を備え、前記第１の面と反対側の面である前記筐体の第２の面に、前記熱伝導性部材と接触する熱放出部を備える電池モジュールの製造方法であって、前記ラミネートセルと前記熱伝導性部材とが積層された積層物を前記第１の面側から前記第２の面側に挿入し、前記熱伝導性部材を前記熱放出部に貼り付ける挿入工程と、を有することを特徴とする。 A method for manufacturing a battery module according to a tenth aspect of the present invention includes a laminate cell having an electrode and a thermally conductive member having adhesion, and the electrode is disposed on a first surface of a housing. A battery module manufacturing method comprising: a heat release portion in contact with the heat conductive member on a second surface of the housing, which is a surface opposite to the first surface. Inserting a laminate in which the laminate cell and the heat conductive member are laminated from the first surface side to the second surface side, and attaching the heat conductive member to the heat release portion And a process.
　本態様によれば、前記積層物を挿入するという簡単な方法で、前記熱伝導性部材と前記熱放出部とを確りと接触させることができ、効率よく充放電に伴う温度上昇を抑制することができる。 According to this aspect, the heat conductive member and the heat release portion can be reliably brought into contact with each other by a simple method of inserting the laminate, and the temperature rise associated with charge / discharge is efficiently suppressed. Can do.
本発明の一実施例に係る電池モジュールの一部切欠きの概略斜視図である。It is a schematic perspective view of a partially cutaway battery module according to an embodiment of the present invention. 本発明の一実施例に係る電池モジュールにおいて筐体の一部を外した状態の該電池モジュールの正面側の部分を表す概略斜視図である。It is a schematic perspective view showing the part by the side of the front of the battery module in the state where a part of case was removed in the battery module concerning one example of the present invention. 本発明の一実施例に係る電池モジュールの背面側の部分を表す概略側断面図である。It is a schematic sectional side view showing the part of the back side of the battery module which concerns on one Example of this invention. 本発明の一実施例に係る電池モジュールの背面側から見た概略断面図である。It is the schematic sectional drawing seen from the back side of the battery module concerning one example of the present invention. 本発明の一実施例に係る電池モジュールと比較例の電池モジュールとの充放電に伴う温度上昇の比較結果を表す図である。It is a figure showing the comparison result of the temperature rise accompanying charging / discharging with the battery module which concerns on one Example of this invention, and the battery module of a comparative example.
　以下に、本発明を実施するための好ましい形態について説明する。　
　図１は、本発明の一実施例に係る電池モジュール１の一部切欠きの概略斜視図である。また、図２は、本発明の一実施例に係る電池モジュールにおいて筐体の一部を外した状態の該電池モジュールの正面側の部分を表す概略斜視図である。また、図３は、本発明の一実施例に係る電池モジュールの背面側の部分を表す概略側断面図である。また、図４は、本発明の一実施例に係る電池モジュールの背面側から見た概略断面図である。 Below, the preferable form for implementing this invention is demonstrated.
FIG. 1 is a schematic perspective view of a partially cutout battery module 1 according to an embodiment of the present invention. FIG. 2 is a schematic perspective view showing a part on the front side of the battery module in a state where a part of the casing is removed in the battery module according to one embodiment of the present invention. FIG. 3 is a schematic cross-sectional side view showing a back side portion of the battery module according to one embodiment of the present invention. FIG. 4 is a schematic cross-sectional view as seen from the back side of the battery module according to one embodiment of the present invention.
　図１に示されるように、本実施例の電池モジュール１は、樹脂製の筐体１６で周囲を囲まれており、正極端子２と負極端子３の両方の電極端子を筐体１６の正面側の第１の面１４に有する。また、第１の面１４と反対側の面である筐体１６の第２の面１５に、フィン状の金属で構成される熱放出部７を備えている。なお、本実施例の電池モジュール１における第２の面１５は、第１の面１４と平行であるが、第１の面１４と反対側の面であればよく、第１の面１４と平行な面でなくてもよい。すなわち、第２の面１５は第１の面１４に対して傾いていてもよい。 As shown in FIG. 1, the battery module 1 of the present embodiment is surrounded by a resin casing 16, and both the positive terminal 2 and the negative terminal 3 are connected to the front side of the casing 16. Of the first surface 14. In addition, the second surface 15 of the casing 16, which is the surface opposite to the first surface 14, is provided with the heat release portion 7 made of fin-like metal. In addition, although the 2nd surface 15 in the battery module 1 of a present Example is parallel to the 1st surface 14, what is necessary is just a surface on the opposite side to the 1st surface 14, and is parallel to the 1st surface 14. It doesn't have to be a serious aspect. That is, the second surface 15 may be inclined with respect to the first surface 14.
　また、図１及び図２で示されるように、電池モジュール１の内部には、樹脂製のセルケースで構成される補強部材６が複数収容されている。図３及び図４に示されるように、補強部材６は、正極１２及び負極１３の両方の電極を有するラミネートセル４と、熱伝導性部材５と、を積層して備えている。詳細には、図４に示されるように、板状の熱伝導性部材５の表裏両面にラミネートセル４が貼り付けられ、それをセルケースである補強部材６が覆い、ユニット１１を構成している。さらに詳細には、各ラミネートセル４は、上下に隣り合うラミネートセル４と熱伝導性部材５又は補強部材６を介して異なる電極が向かい合うように配置されている。 Further, as shown in FIGS. 1 and 2, a plurality of reinforcing members 6 made of a resin cell case are accommodated in the battery module 1. As shown in FIGS. 3 and 4, the reinforcing member 6 includes a laminate cell 4 having both electrodes of the positive electrode 12 and the negative electrode 13 and a heat conductive member 5 laminated. Specifically, as shown in FIG. 4, the laminate cell 4 is attached to both the front and back surfaces of the plate-like heat conductive member 5, and the reinforcing member 6 that is a cell case covers the unit cell 11. Yes. More specifically, each laminate cell 4 is arranged such that different electrodes face each other via the laminate cell 4 adjacent to the top and bottom and the heat conductive member 5 or the reinforcing member 6.
　本実施例の電池モジュール１は、ユニット１１を直列に接続する構成の電池モジュールである。このため、図２で表されるように、電池モジュール１を正面側から見て右側においては、各ユニット１１夫々において正極のタブ１７と負極のタブ１８とが接続されている。そして、電池モジュール１を正面側から見て左側においては、下側に配置されたユニット１１の正極のタブ１７と上側に配置されたユニット１１の負極のタブ１８とが接続されている。図４に示されるように、各ラミネートセル４が上下に隣り合うラミネートセル４と熱伝導性部材５又は補強部材６を介して異なる電極が向かい合うように配置されていることで、正極のタブ１７と負極のタブ１８との接続が容易になっている。ただし、このような構成には限定されない。 The battery module 1 of the present embodiment is a battery module configured to connect the units 11 in series. Therefore, as shown in FIG. 2, the positive electrode tab 17 and the negative electrode tab 18 are connected to each unit 11 on the right side when the battery module 1 is viewed from the front side. On the left side when the battery module 1 is viewed from the front side, the positive electrode tab 17 of the unit 11 disposed on the lower side and the negative electrode tab 18 of the unit 11 disposed on the upper side are connected. As shown in FIG. 4, each laminate cell 4 is arranged so that different electrodes face each other through the laminate cell 4 and the heat conductive member 5 or the reinforcing member 6 adjacent to each other in the vertical direction. And the negative electrode tab 18 are easily connected. However, it is not limited to such a configuration.
　ここで、本実施例の熱伝導性部材５は絶縁性である。なお、熱伝導性部材５は、絶縁性のラミネートセル４の外装（ラミネートフィルム部分）と接するため、絶縁性でなくてもよいが、絶縁性であることが好ましい。例えば、ラミネートセル４が破損した場合等、熱放出部７への予期せぬ電流の発生や隣接するラミネートセル４との短絡電流の発生を抑制することができるためである。 Here, the heat conductive member 5 of this embodiment is insulative. In addition, since the heat conductive member 5 contacts the exterior (laminate film part) of the insulating laminate cell 4, it does not need to be insulative, but is preferably insulative. This is because, for example, when the laminate cell 4 is damaged, it is possible to suppress the occurrence of an unexpected current to the heat release portion 7 and the occurrence of a short-circuit current with the adjacent laminate cell 4.
　また、本実施例の熱伝導性部材５は可撓性を有する。このため、熱伝導性部材５を熱放出部７に押し付けるという簡単な方法で、図３で示されるように、熱伝導性部材５と熱放出部７とを面接触させることができ、効率よく充放電に伴う温度上昇を抑制することができる。 In addition, the heat conductive member 5 of this embodiment has flexibility. For this reason, as shown in FIG. 3, the heat conductive member 5 and the heat release portion 7 can be brought into surface contact with each other by a simple method of pressing the heat conductive member 5 against the heat release portion 7. The temperature rise accompanying charging / discharging can be suppressed.
　また、本実施例の熱伝導性部材５は粘着性を有する。このため、熱伝導性部材５を熱放出部７に貼り付けるという簡単な方法で、熱伝導性部材５と熱放出部７とを確りと接触させることができ、効率よく充放電に伴う温度上昇を抑制することができる。なお、「熱伝導性部材５は粘着性を有する」とは、熱伝導性部材５が粘着性を有する材料を用いて構成される場合も含むが、ここでは、熱伝導性部材５に粘着性物質を付着させた構成である。　
　ただし、熱伝導性部材５はこのようなものに限定されない。 Moreover, the heat conductive member 5 of a present Example has adhesiveness. For this reason, the heat conductive member 5 and the heat discharge | release part 7 can be made to contact reliably by the simple method of sticking the heat conductive member 5 to the heat | fever discharge | release part 7, and the temperature rise accompanying charging / discharging efficiently. Can be suppressed. In addition, although "the heat conductive member 5 has adhesiveness" includes the case where the heat conductive member 5 is comprised using the material which has adhesiveness, here, the heat conductive member 5 is adhesive. It is the structure which made the substance adhere.
However, the heat conductive member 5 is not limited to such a thing.
　また、熱伝導性部材５は、熱伝導率が１．０Ｗ／ｍ・Ｋ以上であることが好ましく、さらに、２．０Ｗ／ｍ・Ｋ以上であることが好ましい。充放電に伴うラミネートセル４の熱を効率的に熱放出部７に伝えることができ、効率よく充放電に伴う温度上昇を抑制することができるためである。熱伝導性部材５の好ましい構成材料は、例えば、アクリル系熱伝導部材、シリコン系熱伝導部材等が挙げられる。具体的には、例えば、ＫＩＴＡＧＡＷＡ　ＩＮＤＵＳＴＲＩＥＳ　ＣＯ．，ＬＴＤ．製のクールプロバイド（熱伝導率：２．０Ｗ／ｍ・Ｋ）、竹内工業株式会社製のＴＭＳ－２２（熱伝導率：２．２Ｗ／ｍ・Ｋ）、株式会社タイカ製のラムダゲルＣＯＨシリーズ（熱伝導率：１．０～２．１Ｗ／ｍ・Ｋ）等が挙げられるがこれらに限定されない。 The heat conductive member 5 preferably has a thermal conductivity of 1.0 W / m · K or more, and more preferably 2.0 W / m · K or more. This is because the heat of the laminate cell 4 associated with charging / discharging can be efficiently transmitted to the heat release portion 7 and the temperature increase associated with charging / discharging can be efficiently suppressed. Examples of a preferable constituent material of the heat conductive member 5 include an acrylic heat conductive member and a silicon heat conductive member. Specifically, for example, KITAGA INDUSTRIES CO. , LTD. Cool Provide (thermal conductivity: 2.0 W / m · K), TMS-22 (thermal conductivity: 2.2 W / m · K) manufactured by Takeuchi Kogyo Co., Ltd. Thermal conductivity: 1.0 to 2.1 W / m · K) and the like, but are not limited thereto.
　また、本実施例の電池モジュール１における熱伝導性部材５は可撓性を有し粘着性を有するため、図３に示されるように熱伝導性部材５は熱放出部７に確りと面接触で貼り付けられている。さらに、図２の方向Ａにユニット１１を挿入することにより、簡単に、熱伝導性部材５を熱放出部７に、面接触状態にして貼り付けて、確り接触させることができる。　
　すなわち、電極１２、１３を有するラミネートセル４と、可撓性を有する熱伝導性部材５と、を積層して備え、筐体１６の第１の面１４に、電極１２、１３と接続する電極端子２、３を備え、第１の面１４と反対側の面である筐体１６の第２の面１５に、熱伝導性部材５と接触する熱放出部７を備える電池モジュール１を、ラミネートセル４と熱伝導性部材５とが積層された積層物を第１の面１４側から第２の面１５側に挿入し、熱伝導性部材５と熱放出部７とを面接触させることにより製造が可能である。　
　また、電極１２、１３を有するラミネートセル４と、粘着性を有する熱伝導性部材５と、を積層して備え、筐体１６の第１の面１４に、電極１２、１３と接続する電極端子２、３を備え、第１の面１４と反対側の面である筐体１６の第２の面１５に、熱伝導性部材５と接触する熱放出部７を備える電池モジュール１を、ラミネートセル４と熱伝導性部材５とが積層された積層物を第１の面１４側から第２の面１５側に挿入し、熱伝導性部材５を熱放出部７に貼り付けることにより製造が可能である。 Further, since the heat conductive member 5 in the battery module 1 of this embodiment is flexible and has adhesiveness, the heat conductive member 5 is surely in surface contact with the heat release portion 7 as shown in FIG. It is pasted in. Furthermore, by inserting the unit 11 in the direction A of FIG. 2, the heat conductive member 5 can be simply attached to the heat release portion 7 in a surface contact state and brought into firm contact.
That is, the laminate cell 4 having the electrodes 12 and 13 and the heat conductive member 5 having flexibility are stacked, and the electrode connected to the electrodes 12 and 13 on the first surface 14 of the housing 16. The battery module 1 including the terminals 2 and 3, and the heat release portion 7 that contacts the heat conductive member 5 is laminated on the second surface 15 of the housing 16 that is the surface opposite to the first surface 14. By inserting a laminate in which the cells 4 and the heat conductive member 5 are laminated from the first surface 14 side to the second surface 15 side, the heat conductive member 5 and the heat release portion 7 are brought into surface contact. Manufacturing is possible.
In addition, the laminate cell 4 having the electrodes 12 and 13 and the heat conductive member 5 having adhesive properties are stacked, and an electrode terminal connected to the electrodes 12 and 13 on the first surface 14 of the housing 16. 2 and 3, the battery module 1 including the heat release portion 7 in contact with the heat conductive member 5 on the second surface 15 of the casing 16, which is the surface opposite to the first surface 14, is a laminated cell. 4 and the heat conductive member 5 can be manufactured by inserting the laminate from the first surface 14 side to the second surface 15 side and attaching the heat conductive member 5 to the heat release portion 7. It is.
　また、図２で示されるように、補強部材６にはスリット状の溝１０が設けられており、詳細には、補強部材６の上下の面に夫々３ヶ所のスリット状の溝１０が設けられている。このような構成となっていることにより、補強部材６の内部であるセルケース内に熱が籠ることを抑制するとともに、補強部材６はラミネートセル４が過放電または過充電された際の膨張を一定量許容しつつ抑制することができる。　
　ラミネートセル４が過放電または過充電された際には、ガスがラミネートセル４の内部に溜まって圧力が加わり、外側から強い圧力を受けるとラミネートセル４が破裂する虞がある。しかしながら、本実施例の補強部材６は、溝１０による該補強部材６の一定量の歪みを許容することで外側から強い圧力をラミネートセル４に与えることを抑制し、ラミネートセル４の破裂を抑制しつつ膨張も抑制することを可能にしている。 As shown in FIG. 2, the reinforcing member 6 is provided with slit-like grooves 10. More specifically, three slit-like grooves 10 are provided on the upper and lower surfaces of the reinforcing member 6. ing. With such a configuration, heat is prevented from flowing into the cell case that is inside the reinforcing member 6, and the reinforcing member 6 expands when the laminate cell 4 is overdischarged or overcharged. It can be suppressed while allowing a certain amount.
When the laminate cell 4 is overdischarged or overcharged, gas accumulates inside the laminate cell 4 and a pressure is applied, and the laminate cell 4 may burst if a strong pressure is applied from the outside. However, the reinforcing member 6 of this embodiment suppresses applying a strong pressure to the laminate cell 4 from the outside by allowing a certain amount of distortion of the reinforcing member 6 due to the groove 10, thereby suppressing the burst of the laminate cell 4. However, it is also possible to suppress expansion.
　なお、本実施例の補強部材６にはスリット状の溝１０が設けられている。しかしながら、スリット状の溝１０ではなく、例えば、補強部材６に円形や矩形等の孔部を設けることによって、補強部材６の一定量の歪みを許容することで外側から強い圧力をラミネートセル４に与えることを抑制し、ラミネートセル４の破裂を抑制しつつ膨張も抑制してもよい。 In addition, the reinforcing member 6 of the present embodiment is provided with a slit-like groove 10. However, instead of the slit-like groove 10, for example, by providing a hole such as a circle or a rectangle in the reinforcing member 6, a certain amount of distortion is allowed to the reinforcing member 6 to apply a strong pressure to the laminate cell 4 from the outside. Giving up and suppressing expansion of laminate cell 4 may also be controlled.
　また、本実施例のユニット１１は、図２及び図４に示されるように、筐体１６の内側面に設けられた突起部８により、ユニット１１同士が接触しないように空間９を介して電池モジュール１に収容されている。このように空間９が設けられていることにより、ラミネートセル４の破裂を抑制しつつ膨張も抑制することを効果的に達成できる。膨張したユニット１１同士の干渉を抑制できるためである。ただしこのような構成に限定されない。なお、突起部８は、電池モジュール１の両方の側面に、短い突起と長い突起とが上下方向に交互に形成されることによって構成されている。そして、短い突起はユニット１１の左右方向の動きを規制する役割をし、長い突起はユニット１１の上下方向の動きを規制する役割とともにユニット１１同士の干渉を抑制するための空間９を形成する役割をしている。　
　なお、気流を発生可能なファン等を別途電池モジュール１に設けることにより、空間９を空気の流路とし、ユニット１１を冷却することが可能な構成としてもよい。 Further, as shown in FIGS. 2 and 4, the unit 11 according to the present embodiment has a battery 9 through a space 9 so that the units 11 do not come into contact with each other by the protrusion 8 provided on the inner surface of the housing 16. Housed in module 1. By providing the space 9 in this way, it is possible to effectively achieve suppression of expansion while suppressing the bursting of the laminate cell 4. This is because interference between the expanded units 11 can be suppressed. However, it is not limited to such a configuration. The protrusions 8 are configured by alternately forming short protrusions and long protrusions on both sides of the battery module 1 in the vertical direction. The short projections serve to regulate the movement of the unit 11 in the left-right direction, and the long projections serve to regulate the movement of the unit 11 in the vertical direction and form a space 9 for suppressing interference between the units 11. I am doing.
In addition, it is good also as a structure which can cool the unit 11 by making the space 9 into an air flow path by providing separately the fan etc. which can generate | occur | produce an airflow in the battery module 1. FIG.
　また、図１で示されるように、本実施例の電池モジュール１は、電極端子を筐体１６の第１の面１４に有し、第１の面１４と反対側の第２の面１５に、フィン状の金属で構成される熱放出部７を備えているため、ラミネートセル４の熱を、第２の面１５の方向への一方向に伝えることができる。このため、電池モジュール１を筐体１６の電極端子が設けられた第１の面１４が同じ向きになるように複数並べ又は積み重ねた場合、これら複数の電池モジュール１の熱は隣接する電池モジュール４側に伝わらず、熱が籠り難い。すなわち、効率的に充放電に伴う温度上昇を抑制することができる。 Further, as shown in FIG. 1, the battery module 1 of the present embodiment has electrode terminals on the first surface 14 of the housing 16, and on the second surface 15 opposite to the first surface 14. Since the heat-dissipating part 7 composed of a fin-like metal is provided, the heat of the laminate cell 4 can be transmitted in one direction toward the second surface 15. For this reason, when a plurality of battery modules 1 are arranged or stacked such that the first surface 14 provided with the electrode terminals of the housing 16 is in the same direction, the heat of the plurality of battery modules 1 is adjacent to the battery module 4. It is hard to burn heat without being transmitted to the side. That is, the temperature rise accompanying charging / discharging can be suppressed efficiently.
　なお、ラミネートセル４の熱伝導性部材５に対する接触面積は広い方が効率よく充放電に伴う温度上昇を抑制することができるため好ましい。特に、ラミネートセル４における熱伝導性部材５と対向する側の面の面積の７０％以上の面積となるように、ラミネートセル４と熱伝導性部材５とが面接触している構成が好ましい。 In addition, since the one where the contact area with respect to the heat conductive member 5 of the laminate cell 4 is large can suppress the temperature rise accompanying charging / discharging efficiently, it is preferable. In particular, a configuration in which the laminate cell 4 and the heat conductive member 5 are in surface contact so that the area of the surface of the laminate cell 4 on the side facing the heat conductive member 5 is 70% or more is preferable.
　本実施例の熱放出部７は、フィン状であるとともにアルミニウムで構成されており、熱放出効果が高い。このため、効率よく充放電に伴う温度上昇を抑制することができる。ただし、このような形状及び構成材料に限定されない。熱放出部７の好ましい構成材料としては、例えば、アルミニウム、黒色アルマイト、銅等が挙げられる。 The heat release portion 7 of this embodiment is fin-shaped and made of aluminum, and has a high heat release effect. For this reason, the temperature rise accompanying charging / discharging can be suppressed efficiently. However, it is not limited to such shapes and constituent materials. Examples of a preferable constituent material of the heat release portion 7 include aluminum, black alumite, and copper.
　また、本実施例の正極端子２及び負極端子３は平板状であり、ラミネートセル４を薄く構成できるため該ラミネートセル４を積層し易い。ただし、このような構成に限定されない。　
　なお、正極端子２は、アルミニウム等で構成されていることが好ましい。導電効果が高いためである。ただし、このような構成材料に限定されない。　
　一方、負極端子３は、ニッケルメッキ銅等で構成されていることが好ましい。導電効果が高いためである。ただし、このような構成材料に限定されない。 Moreover, since the positive electrode terminal 2 and the negative electrode terminal 3 of this embodiment are flat and the laminate cell 4 can be made thin, the laminate cell 4 can be easily laminated. However, it is not limited to such a configuration.
The positive electrode terminal 2 is preferably made of aluminum or the like. This is because the conductive effect is high. However, it is not limited to such a constituent material.
On the other hand, the negative electrode terminal 3 is preferably made of nickel-plated copper or the like. This is because the conductive effect is high. However, it is not limited to such a constituent material.
　また、図３及び図４で示されるように、本実施例の電池モジュール１は、補強部材６、ラミネートセル４、熱伝導性部材５、ラミネートセル４、補強部材６の順に上下方向に積層されるユニット１１を複数収容して構成される。ただし、このような構成に限定されず、例えば、ユニット１１における補強部材６を用いる代わりに熱伝導性部材５として強度が強いものを用いて、ラミネートセル４と熱伝導性部材５とからなるユニットを複数積層する構成としてもよい。　
　しかしながら、本実施例の電池モジュール１のように、補強部材６を備え、ラミネートセル４と、熱伝導性部材５と、補強部材６と、を積層して備える構成が好ましい。このような構成は、補強部材６を備えるので、熱伝導性部材５の強度を強くしたうえでラミネートセル４に密着させるという高度な技術を採用する必要がなくなるとともに、ラミネートセル４が過放電または過充電された際の膨張を該補強部材６により抑制可能になるためである。すなわち、低コスト化と、ラミネートセル４の膨張の抑制及びラミネートセル４に対するストレスの抑制と、が可能になるためである。　
　また、補強部材６、ラミネートセル４、熱伝導性部材５が規則性なく積層される構成でもよい。 As shown in FIGS. 3 and 4, the battery module 1 of the present embodiment is laminated in the vertical direction in the order of the reinforcing member 6, the laminated cell 4, the heat conductive member 5, the laminated cell 4, and the reinforcing member 6. A plurality of units 11 are accommodated. However, it is not limited to such a configuration, for example, instead of using the reinforcing member 6 in the unit 11, a unit composed of the laminate cell 4 and the heat conductive member 5 is used as the heat conductive member 5 having a high strength. A plurality of layers may be stacked.
However, like the battery module 1 of the present embodiment, a configuration in which the reinforcing member 6 is provided and the laminate cell 4, the heat conductive member 5, and the reinforcing member 6 are stacked is preferable. Such a configuration includes the reinforcing member 6, so that it is not necessary to adopt an advanced technique of increasing the strength of the heat conductive member 5 and making it adhere to the laminate cell 4. This is because the reinforcement member 6 can suppress expansion when overcharged. That is, it is possible to reduce the cost and to suppress the expansion of the laminate cell 4 and the stress on the laminate cell 4.
Moreover, the structure by which the reinforcement member 6, the laminate cell 4, and the heat conductive member 5 are laminated | stacked without regularity may be sufficient.
　次に、本実施例の電池モジュール１の充放電に伴う温度上昇を抑制する効果について説明する。　
　図５は、本実施例の電池モジュール１と、比較例としての熱伝導性部材を有しない従来の電池モジュールと、の充放電に伴う温度上昇の比較結果を表す図である。　
　なお、比較例の電池モジュールは、熱伝導性部材を有しないこと以外は本実施例の電池モジュール１と同様の構成である。 Next, the effect which suppresses the temperature rise accompanying charging / discharging of the battery module 1 of a present Example is demonstrated.
FIG. 5 is a diagram showing a comparison result of a temperature increase due to charging / discharging between the battery module 1 of the present embodiment and a conventional battery module having no heat conductive member as a comparative example.
In addition, the battery module of a comparative example is the structure similar to the battery module 1 of a present Example except not having a heat conductive member.
　ここで、図５は、横軸が経過時間（分）、縦軸が電池モジュールの上昇温度（℃）を表している。詳細には、本実施例の電池モジュール１及び比較例の電池モジュールを、経過時間が２０分まで充電させ、その後経過時間が１２０分まで放電させ、その後経過時間が１４０分まで充電させた際の夫々の電池モジュールの上昇温度（℃）を表している。　
　図５で表されるように、本実施例の電池モジュール１は、比較例の電池モジュールと比較して、明らかに充放電に伴う温度上昇を抑制できている。 Here, in FIG. 5, the horizontal axis represents the elapsed time (minutes), and the vertical axis represents the rising temperature (° C.) of the battery module. Specifically, when the battery module 1 of this example and the battery module of the comparative example are charged up to 20 minutes, the elapsed time is discharged up to 120 minutes, and then the elapsed time is charged up to 140 minutes. The rising temperature (° C.) of each battery module is shown.
As shown in FIG. 5, the battery module 1 of the present example clearly suppresses the temperature increase due to charging / discharging as compared with the battery module of the comparative example.

Claims (20)

  1. 　電極を有するラミネートセルと、熱伝導性部材と、を積層して備え、
    　筐体の第１の面に、前記電極と接続する電極端子を備え、
    　前記第１の面と反対側の面である前記筐体の第２の面に、前記熱伝導性部材と接触する熱放出部を備えることを特徴とする電池モジュール。     A laminate cell having an electrode and a thermally conductive member are provided by being laminated,
    An electrode terminal connected to the electrode is provided on the first surface of the housing,
    A battery module comprising a heat release portion that contacts the heat conductive member on a second surface of the casing, which is a surface opposite to the first surface.
  2. 　請求項１に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、可撓性を有することを特徴とする電池モジュール。     The battery module according to claim 1,
    The battery module, wherein the heat conductive member has flexibility.
  3. 　請求項１に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、粘着性を有することを特徴とする電池モジュール。     The battery module according to claim 1,
    The battery module, wherein the heat conductive member has adhesiveness.
  4. 　請求項２に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、粘着性を有することを特徴とする電池モジュール。     The battery module according to claim 2,
    The battery module, wherein the heat conductive member has adhesiveness.
  5. 　請求項１に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、絶縁性であることを特徴とする電池モジュール。     The battery module according to claim 1,
    The battery module, wherein the heat conductive member is insulative.
  6. 　請求項２に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、絶縁性であることを特徴とする電池モジュール。     The battery module according to claim 2,
    The battery module, wherein the heat conductive member is insulative.
  7. 　請求項３に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、絶縁性であることを特徴とする電池モジュール。     The battery module according to claim 3, wherein
    The battery module, wherein the heat conductive member is insulative.
  8. 　請求項１に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、熱伝導率が１．０Ｗ／ｍ・Ｋ以上であることを特徴とする電池モジュール。     The battery module according to claim 1,
    The thermal conductive member has a thermal conductivity of 1.0 W / m · K or more.
  9. 　請求項２項に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、熱伝導率が１．０Ｗ／ｍ・Ｋ以上であることを特徴とする電池モジュール。     The battery module according to claim 2,
    The thermal conductive member has a thermal conductivity of 1.0 W / m · K or more.
  10. 　請求項３に記載の電池モジュールにおいて、
    　前記熱伝導性部材は、熱伝導率が１．０Ｗ／ｍ・Ｋ以上であることを特徴とする電池モジュール。     The battery module according to claim 3, wherein
    The thermal conductive member has a thermal conductivity of 1.0 W / m · K or more.
  11. 　請求項１に記載の電池モジュールにおいて、
    　前記熱伝導性部材と前記熱放出部とは、面接触していることを特徴とする電池モジュール。     The battery module according to claim 1,
    The battery module, wherein the heat conductive member and the heat release portion are in surface contact.
  12. 　請求項２に記載の電池モジュールにおいて、
    　前記熱伝導性部材と前記熱放出部とは、面接触していることを特徴とする電池モジュール。     The battery module according to claim 2,
    The battery module, wherein the heat conductive member and the heat release portion are in surface contact.
  13. 　請求項３に記載の電池モジュールにおいて、
    　前記熱伝導性部材と前記熱放出部とは、面接触していることを特徴とする電池モジュール。     The battery module according to claim 3, wherein
    The battery module, wherein the heat conductive member and the heat release portion are in surface contact.
  14. 　請求項１に記載の電池モジュールにおいて、
    　前記熱放出部は、フィン状の金属で構成されていることを特徴とする電池モジュール。     The battery module according to claim 1,
    The battery module is characterized in that the heat release portion is made of a fin-like metal.
  15. 　請求項１に記載の電池モジュールにおいて、
    　前記熱放出部は、フィン状の金属で構成されていることを特徴とする電池モジュール。     The battery module according to claim 1,
    The battery module is characterized in that the heat release portion is made of a fin-like metal.
  16. 　請求項１に記載の電池モジュールにおいて、
    　前記熱放出部は、フィン状の金属で構成されていることを特徴とする電池モジュール。     The battery module according to claim 1,
    The battery module is characterized in that the heat release portion is made of a fin-like metal.
  17. 　請求項１に記載の電池モジュールにおいて、
    　補強部材を備え、
    　前記ラミネートセルと、前記熱伝導性部材と、前記補強部材と、を積層して備えていることを特徴とする電池モジュール。     The battery module according to claim 1,
    A reinforcing member,
    A battery module comprising the laminate cell, the thermally conductive member, and the reinforcing member stacked.
  18. 　請求項２に記載の電池モジュールにおいて、
    　補強部材を備え、
    　前記ラミネートセルと、前記熱伝導性部材と、前記補強部材と、を積層して備えていることを特徴とする電池モジュール。     The battery module according to claim 2,
    A reinforcing member,
    A battery module comprising the laminate cell, the thermally conductive member, and the reinforcing member stacked.
  19. 　電極を有するラミネートセルと、可撓性を有する熱伝導性部材と、を積層して備え、
    　筐体の第１の面に、前記電極と接続する電極端子を備え、
    　前記第１の面と反対側の面である前記筐体の第２の面に、前記熱伝導性部材と接触する熱放出部を備える電池モジュールの製造方法であって、
    　前記ラミネートセルと前記熱伝導性部材とが積層された積層物を前記第１の面側から前記第２の面側に挿入し、前記熱伝導性部材と前記熱放出部とを面接触させる挿入工程と、を有することを特徴とする電池モジュールの製造方法。     A laminate cell having an electrode and a heat conductive member having flexibility are laminated and provided.
    An electrode terminal connected to the electrode is provided on the first surface of the housing,
    A method of manufacturing a battery module comprising a heat release portion that contacts the heat conductive member on a second surface of the housing, which is a surface opposite to the first surface,
    Inserting a laminate obtained by laminating the laminate cell and the heat conductive member from the first surface side to the second surface side, and bringing the heat conductive member and the heat release portion into surface contact And a process for producing a battery module.
  20. 　電極を有するラミネートセルと、粘着性を有する熱伝導性部材と、を積層して備え、
    　筐体の第１の面に、前記電極と接続する電極端子を備え、
    　前記第１の面と反対側の面である前記筐体の第２の面に、前記熱伝導性部材と接触する熱放出部を備える電池モジュールの製造方法であって、
    　前記ラミネートセルと前記熱伝導性部材とが積層された積層物を前記第１の面側から前記第２の面側に挿入し、前記熱伝導性部材を前記熱放出部に貼り付ける挿入工程と、を有することを特徴とする電池モジュールの製造方法。     A laminate cell having an electrode and a thermally conductive member having adhesive properties are laminated and provided.
    An electrode terminal connected to the electrode is provided on the first surface of the housing,
    A method of manufacturing a battery module comprising a heat release portion that contacts the heat conductive member on a second surface of the housing, which is a surface opposite to the first surface,
    An insertion step of inserting a laminate in which the laminate cell and the heat conductive member are laminated from the first surface side to the second surface side, and attaching the heat conductive member to the heat release portion; The manufacturing method of the battery module characterized by having.
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