JP2017027720A - Battery cooling structure - Google Patents

Battery cooling structure Download PDF

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JP2017027720A
JP2017027720A JP2015143823A JP2015143823A JP2017027720A JP 2017027720 A JP2017027720 A JP 2017027720A JP 2015143823 A JP2015143823 A JP 2015143823A JP 2015143823 A JP2015143823 A JP 2015143823A JP 2017027720 A JP2017027720 A JP 2017027720A
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heat
battery
heat transfer
cooling structure
transfer surface
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下野園　均
Hitoshi Shimonosono
均 下野園
且行 浦山
Katsuyuki Urayama
且行 浦山
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Marelli Corp
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Calsonic Kansei Corp
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    • 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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Abstract

PROBLEM TO BE SOLVED: To provide a battery cooling structure capable of enhancing the cooling efficiency and the heat radiation efficiency.SOLUTION: A battery cooling structure includes a first heat transfer surface H1 configured by an outer peripheral surface 60 of a battery module M having one or two or more battery cells C, a second heat transfer surface H2 configured by an inner peripheral surface 100a of a housing 100 for housing the battery module, and a thermoelectric element 30 which are arranged between the first heat transfer surface and the second heat transfer surface and has a heat absorption surface 30a and a heat radiation surface 30b. Heat transport members 50A, 50B for performing heat transport by circulation of a heating medium that changes in phase between vapor phase and liquid phase are arranged either between the thermoelectric element and the first heat transfer surface or between the thermoelectric element and the second heat transfer surface.SELECTED DRAWING: Figure 5

Description

本発明は、バッテリセルを備えたバッテリモジュールを冷却するバッテリ冷却構造に関する。   The present invention relates to a battery cooling structure that cools a battery module including battery cells.

電気自動車やハイブリット自動車などには、電動機等に電気を供給するバッテリが搭載されている。バッテリとしては、繰返し充放電が可能なニッカド（Ｎｉ−Ｃｄ）電池、ニッケル−水素電池、リチウムイオン電池などの二次バッテリが用いられる。   A battery for supplying electricity to an electric motor or the like is mounted on an electric vehicle or a hybrid vehicle. As the battery, a secondary battery such as a nickel-cadmium (Ni-Cd) battery, a nickel-hydrogen battery, or a lithium ion battery that can be repeatedly charged and discharged is used.

このようなバッテリは、充電時および放電時に発熱し、バッテリ温度が上昇する。このようなバッテリ温度が上昇した状態を放置すると、バッテリ特性が低下し、使用寿命が短くなるなどの不具合を生じる。   Such a battery generates heat during charging and discharging, and the battery temperature rises. If such a state in which the battery temperature is increased is left as it is, problems such as deterioration in battery characteristics and shortened service life occur.

そこで、ペルチェ素子等の熱電素子を利用してバッテリを冷却する冷却装置が種々提案されている（例えば特許文献１等）。   Therefore, various cooling devices for cooling the battery using thermoelectric elements such as Peltier elements have been proposed (for example, Patent Document 1).

特開２０１０−１９２２０７号公報JP 2010-192207 A

ここで、従来の冷却装置では、ペルチェ素子の吸熱面は、組電池（バッテリモジュール）の一面に接し、ペルチェ素子の放熱面はバッテリモジュールの収容容器（筐体）の一面に接するように配置されている。   Here, in the conventional cooling device, the heat absorption surface of the Peltier element is disposed so as to contact one surface of the assembled battery (battery module), and the heat dissipation surface of the Peltier element is disposed so as to contact one surface of the container (housing) of the battery module. ing.

しかしながら、従来構造において、ペルチェ素子とバッテリモジュールおよび筐体とが接する面は限定され、接触面積も比較的小さいため、ペルチェ素子の冷却面によるバッテリモジュールの冷却、およびペルチェ素子の放熱部からの放熱を十分に行うことができず、冷却効率および放熱効率が低いという問題があった。   However, in the conventional structure, the surface where the Peltier element contacts the battery module and the housing is limited, and the contact area is also relatively small. Therefore, the cooling of the battery module by the cooling surface of the Peltier element and the heat dissipation from the heat dissipation part of the Peltier element There was a problem that cooling efficiency and heat dissipation efficiency were low.

本発明は、上記課題に鑑みてなされたものであり、冷却効率および放熱効率を向上させることのできるバッテリ冷却構造を提供することを目的とする。   This invention is made | formed in view of the said subject, and it aims at providing the battery cooling structure which can improve cooling efficiency and heat dissipation efficiency.

上記目的を達成するため、本発明に係るバッテリ冷却構造は、１または２以上のバッテリセルを備えたバッテリモジュールの外周面で構成される第１伝熱面と、前記バッテリモジュールを収容する筐体の内周面で構成される第２伝熱面と、前記第１伝熱面と前記第２伝熱面の間に配置され、吸熱面と放熱面を備えた熱電素子と、を備え、前記熱電素子と前記第１伝熱面の間、または前記熱電素子と第２伝熱面の間の少なくとも一方に、気相と液相とに相変化する熱媒の循環により熱輸送を行う熱輸送部材が配置されていることを要旨とする。   In order to achieve the above object, a battery cooling structure according to the present invention includes a first heat transfer surface formed of an outer peripheral surface of a battery module including one or more battery cells, and a housing that houses the battery module. A second heat transfer surface composed of an inner peripheral surface of the first heat transfer surface, a thermoelectric element disposed between the first heat transfer surface and the second heat transfer surface, and having a heat absorption surface and a heat dissipation surface, Heat transport that transports heat by circulation of a heat medium that changes phase between gas phase and liquid phase between at least one of the thermoelectric element and the first heat transfer surface or between the thermoelectric element and the second heat transfer surface. The gist is that the members are arranged.

本発明に係るバッテリ冷却構造によれば、熱輸送部材を介して熱電素子と第１伝熱面の間、または熱電素子と第２伝熱面の間の熱輸送を行うので、熱輸送部材がバッテリモジュール側の第１伝熱面あるいは筐体側の第２伝熱面と接触する位置を調整したり接触面積を大きくとることにより、バッテリモジュールの冷却面積あるいは熱電素子の放熱面積を実質的に拡大することができる。これにより、バッテリモジュールの冷却効率および熱電素子の放熱効率を向上させることができる。   According to the battery cooling structure of the present invention, heat transfer is performed between the thermoelectric element and the first heat transfer surface or between the thermoelectric element and the second heat transfer surface via the heat transfer member. By adjusting the position of contact with the first heat transfer surface on the battery module side or the second heat transfer surface on the housing side or by increasing the contact area, the cooling area of the battery module or the heat dissipation area of the thermoelectric element is substantially expanded. can do. Thereby, the cooling efficiency of a battery module and the thermal radiation efficiency of a thermoelectric element can be improved.

実施の形態に係るバッテリ冷却構造と温度との関係を模式的に示す説明図である。It is explanatory drawing which shows typically the relationship between the battery cooling structure and temperature which concern on embodiment. 実施の形態に係るバッテリ冷却構造に適用される熱輸送部材の構成を模式的に示す説明図である。It is explanatory drawing which shows typically the structure of the heat transport member applied to the battery cooling structure which concerns on embodiment. 第１の実施の形態に係るバッテリ冷却構造を示す一部断面図である。It is a partial cross section figure showing the battery cooling structure concerning a 1st embodiment. 第１の実施の形態に係るバッテリ冷却構造を示すＡ−Ａ線断面図である。It is an AA line sectional view showing the battery cooling structure concerning a 1st embodiment. 第１の実施の形態に係るバッテリ冷却構造を示す一部断面斜視図である。It is a partial cross section perspective view which shows the battery cooling structure which concerns on 1st Embodiment. 第２の実施の形態に係るバッテリ冷却構造を示す一部断面図である。It is a partial cross section figure which shows the battery cooling structure which concerns on 2nd Embodiment. 第２の実施の形態に係るバッテリ冷却構造を示すＡ−Ａ線断面図である。It is AA sectional view taken on the line which shows the battery cooling structure which concerns on 2nd Embodiment. 第２の実施の形態に係るバッテリ冷却構造を示す一部断面斜視図である。It is a partial cross section perspective view which shows the battery cooling structure which concerns on 2nd Embodiment. 第２の実施の形態に係るバッテリ冷却構造に適用される熱輸送部材の構成例を模式的に示す平面図である。It is a top view which shows typically the structural example of the heat transport member applied to the battery cooling structure which concerns on 2nd Embodiment. 第３の実施の形態に係るバッテリ冷却構造を示す一部断面図である。It is a partial cross section figure which shows the battery cooling structure which concerns on 3rd Embodiment. 第３の実施の形態に係るバッテリ冷却構造を示すＡ−Ａ線断面図である。It is AA sectional view taken on the line which shows the battery cooling structure which concerns on 3rd Embodiment. 第３の実施の形態に係るバッテリ冷却構造を示す一部断面斜視図である。It is a partial cross section perspective view which shows the battery cooling structure which concerns on 3rd Embodiment.

以下、本発明の一例としての実施の形態を図面に基づいて詳細に説明する。ここで、添付図面において同一の部材には同一の符号を付しており、また、重複した説明は省略されている。なお、ここでの説明は本発明が実施される最良の形態であることから、本発明は当該形態に限定されるものではない。   Hereinafter, an embodiment as an example of the present invention will be described in detail with reference to the drawings. Here, in the accompanying drawings, the same reference numerals are given to the same members, and duplicate descriptions are omitted. In addition, since description here is the best form by which this invention is implemented, this invention is not limited to the said form.

［実施の形態に係るバッテリ冷却構造の模式的構成］
図１は、実施の形態に係るバッテリ冷却構造Ｂと温度との関係を模式的に示す説明図である。 [Schematic Configuration of Battery Cooling Structure According to Embodiment]
FIG. 1 is an explanatory diagram schematically showing the relationship between the battery cooling structure B and the temperature according to the embodiment.

バッテリ冷却構造Ｂは、発熱部としての１または２以上のバッテリセルＣを備えたバッテリモジュールＭの熱が、熱輸送部材５０Ａによりペルチェ素子等で構成される熱電素子３０に熱輸送されるようになっている。   The battery cooling structure B is configured so that heat of the battery module M including one or more battery cells C as a heat generating portion is thermally transported to the thermoelectric element 30 configured by a Peltier element or the like by the heat transport member 50A. It has become.

より具体的には、バッテリモジュールＭの外周面６０で構成される第１伝熱面Ｈ１と、熱電素子３０の吸熱面３０ａとが熱輸送部材５０Ａを介して接続されている。   More specifically, the first heat transfer surface H1 configured by the outer peripheral surface 60 of the battery module M and the heat absorption surface 30a of the thermoelectric element 30 are connected via the heat transport member 50A.

また、熱電素子３０に熱輸送された熱は、熱輸送部材５０Ａにより放熱部Ｄに熱輸送されるようになっている。   Further, the heat transported to the thermoelectric element 30 is transported to the heat radiating portion D by the heat transport member 50A.

より具体的には、熱電素子３０の放熱面３０ｂと、バッテリモジュールＭを収容する筐体１００の内周面１００ａで構成される放熱部Ｄとしての第２伝熱面Ｈ２とが熱輸送部材５０Ｂを介して接続されている。   More specifically, the heat transfer member 50B includes a heat dissipation surface 30b of the thermoelectric element 30 and a second heat transfer surface H2 as the heat dissipation portion D configured by the inner peripheral surface 100a of the casing 100 that houses the battery module M. Connected through.

ここで、熱輸送部材５０（５０Ａ、５０Ｂ）は、気相と液相とに相変化する熱媒の循環により熱輸送を行う部材である。なお、熱輸送部材５０の原理等については後述する。   Here, the heat transport member 50 (50A, 50B) is a member that transports heat by circulation of a heat medium that changes phase between a gas phase and a liquid phase. The principle of the heat transport member 50 will be described later.

そして、温度を示すグラフの温度変化状況が示すように、発熱部としてのバッテリモジュールＭの熱が熱輸送部材５０Ａの熱輸送作用により熱電素子３０の吸熱面３０ａから放熱面３０ｂに集められ、放熱面３０ｂの温度がピークとなる。その後、熱電素子３０の方向面３０ｂの熱は、熱輸送部材５０Ｂの熱輸送作用により放熱部Ｄに熱輸送され、外気との接触により徐冷される。   As shown in the temperature change state of the graph indicating the temperature, the heat of the battery module M as the heat generating part is collected from the heat absorbing surface 30a of the thermoelectric element 30 to the heat radiating surface 30b by the heat transport action of the heat transport member 50A, The temperature of the surface 30b becomes a peak. Thereafter, the heat of the directional surface 30b of the thermoelectric element 30 is heat transported to the heat radiating portion D by the heat transport action of the heat transport member 50B and gradually cooled by contact with the outside air.

これにより、発熱部としてのバッテリモジュールＭを効率的に冷却することができる。   Thereby, the battery module M as a heat-emitting part can be cooled efficiently.

［バッテリ冷却構造に適用される熱輸送部材の構成］
図２は、実施の形態に係るバッテリ冷却構造Ｂに適用される熱輸送部材５０の構成を模式的に示す説明図である。 [Configuration of heat transport member applied to battery cooling structure]
FIG. 2 is an explanatory diagram schematically showing the configuration of the heat transport member 50 applied to the battery cooling structure B according to the embodiment.

図２に示すように、熱輸送部材５０は、熱媒２００がＤ１、Ｄ２方向に循環可能なアルミニウム等で構成される流路５１を備えている。なお、図２に示す熱輸送部材５０は、横方向が長手となる長方形となる板状あるいはシート状に成形されている。   As shown in FIG. 2, the heat transport member 50 includes a flow channel 51 made of aluminum or the like through which the heat medium 200 can circulate in the directions D1 and D2. Note that the heat transport member 50 shown in FIG. 2 is formed in a plate shape or a sheet shape that is a rectangle whose longitudinal direction is the longitudinal direction.

熱媒２００は、気相Ｇと液相Ｌとに相変化可能なフロン、ブタン、水、アルコール等で構成される。   The heat medium 200 is composed of chlorofluorocarbon, butane, water, alcohol, or the like that can change into a gas phase G and a liquid phase L.

そして、熱輸送部材５０の長手方向の一端（Ａ端）側が放熱部となる際には、他端（Ｂ端）が冷却部として機能し、逆に一端（Ａ端）側が冷却部となる際には、他端（Ｂ端）が放熱部として機能する。   When the one end (A end) side in the longitudinal direction of the heat transport member 50 becomes a heat radiating part, the other end (B end) functions as a cooling part, and conversely, when one end (A end) side becomes a cooling part. The other end (B end) functions as a heat radiating part.

このような熱輸送部材５０の熱輸送効果は、熱媒２００の気相ＧのＤ１、Ｄ２方向への移動および液相Ｌの自励振動によって得られる。   Such a heat transport effect of the heat transport member 50 is obtained by the movement of the gas phase G of the heat medium 200 in the directions D1 and D2 and the self-excited vibration of the liquid phase L.

即ち、熱吸収により熱媒２００が相変化し、気相（蒸気）Ｇの移動によって潜熱を輸送する。また、熱媒２００の核沸騰（表面温度が液体の沸点より低いが、熱流束が臨界熱流束を下回る場合に起こる沸騰の一形態）により液相Ｌが振動し、この振動により顕熱が輸送されるという原理を応用している。   That is, the heat medium 200 changes phase by heat absorption, and latent heat is transported by movement of the gas phase (steam) G. Further, the liquid phase L vibrates due to nucleate boiling of the heating medium 200 (a form of boiling that occurs when the surface temperature is lower than the boiling point of the liquid but the heat flux is below the critical heat flux), and this vibration transports sensible heat. Applying the principle of being.

ここで、本実施の形態で適用した熱輸送部材５０の実効熱伝導率は、約１００００〜３００００Ｗ／ｍ℃程度に達する。これに対して、一般的なヒートパイプ等に適用される鉄の熱伝導率は８４Ｗ／ｍ℃、アルミニウムの熱伝導率は２３６Ｗ／ｍ℃、銅の熱伝導率は３９８Ｗ／ｍ℃であり、熱輸送部材５０の熱伝導率が非常に高いことが分かる。   Here, the effective thermal conductivity of the heat transport member 50 applied in the present embodiment reaches about 10,000 to 30000 W / m ° C. On the other hand, the thermal conductivity of iron applied to a general heat pipe or the like is 84 W / m ° C., the thermal conductivity of aluminum is 236 W / m ° C., and the thermal conductivity of copper is 398 W / m ° C., It can be seen that the heat conductivity of the heat transport member 50 is very high.

このような特性を有する熱輸送部材５０を用いることにより、図１に示すような発熱部（第１伝熱面Ｈ１）と放熱部（第２伝熱面Ｈ２）との間で効率的に熱輸送を行って、バッテリモジュールＭを効果的に冷却することができる。   By using the heat transport member 50 having such characteristics, heat is efficiently generated between the heat generating portion (first heat transfer surface H1) and the heat radiating portion (second heat transfer surface H2) as shown in FIG. The battery module M can be effectively cooled by transportation.

なお、熱輸送部材５０を可撓性を有するシート状とすることにより、バッテリモジュールＭの外周面６０やバッテリモジュールＭを収容する筐体１００の内周面１００ａの形状に沿って、熱輸送部材５０を密着させて配置することができる。   In addition, by making the heat transport member 50 into a flexible sheet shape, the heat transport member is formed along the shape of the outer peripheral surface 60 of the battery module M and the inner peripheral surface 100a of the housing 100 that houses the battery module M. 50 can be placed in close contact with each other.

［第１の実施の形態に係るバッテリ冷却構造］
図３〜図５を参照して、第１の実施の形態に係るバッテリ冷却構造Ｂ１について説明する。 [Battery Cooling Structure According to First Embodiment]
The battery cooling structure B1 according to the first embodiment will be described with reference to FIGS.

ここで、図３は、第１の実施の形態に係るバッテリ冷却構造Ｂ１を示す一部断面図、図４は、図３のＡ−Ａ線断面図、図５は、バッテリ冷却構造Ｂ１の構成例を示す一部断面斜視図である。   3 is a partial cross-sectional view showing the battery cooling structure B1 according to the first embodiment, FIG. 4 is a cross-sectional view taken along line AA of FIG. 3, and FIG. 5 is a configuration of the battery cooling structure B1. It is a partial cross section perspective view which shows an example.

本実施の形態に係るバッテリ冷却構造Ｂ１は、複数のバッテリセルＣを備えた各バッテリモジュールＭ１、Ｍ２の外周面６０で構成される第１伝熱面Ｈ１と、２つのバッテリモジュールＭ１、Ｍ２を収容するアルミニウム等の金属で成形される筐体１００の内周面１００ａで構成される第２伝熱面Ｈ２と、第１伝熱面Ｈ１と第２伝熱面Ｈ２の間に配置され、吸熱面３０ａと放熱面３０ｂを備えたペルチェ素子等で構成される熱電素子３０とを備えている。   The battery cooling structure B1 according to the present embodiment includes a first heat transfer surface H1 configured by the outer peripheral surface 60 of each of the battery modules M1 and M2 including a plurality of battery cells C, and the two battery modules M1 and M2. Arranged between the second heat transfer surface H2 composed of the inner peripheral surface 100a of the housing 100 formed of a metal such as aluminum to be accommodated, and between the first heat transfer surface H1 and the second heat transfer surface H2, and absorbs heat. The thermoelectric element 30 comprised by the Peltier device etc. provided with the surface 30a and the thermal radiation surface 30b is provided.

そして、本実施の形態に係るバッテリ冷却構造Ｂ１では、熱電素子３０と第１伝熱面Ｈ１の間に、前出の図２に示すような内部構造を備えた熱輸送部材５０Ａが設けられている。   In the battery cooling structure B1 according to the present embodiment, a heat transport member 50A having an internal structure as shown in FIG. 2 is provided between the thermoelectric element 30 and the first heat transfer surface H1. Yes.

また、筐体１００内の熱輸送部材５０Ａと第２伝熱面Ｈ２との間には、発泡樹脂等で構成される断熱材１０１が設けられている。これにより、熱輸送部材５０Ａと第２伝熱面Ｈ２との間の熱戻りを抑制することができる。   Further, a heat insulating material 101 made of foamed resin or the like is provided between the heat transport member 50A in the housing 100 and the second heat transfer surface H2. Thereby, the heat return between the heat transport member 50A and the second heat transfer surface H2 can be suppressed.

そして、熱電素子３０の吸熱面３０ａは熱輸送部材５０Ａの一端（Ａ端）側に熱結合され、熱輸送部材５０Ａの他端（Ｂ端）側は第１伝熱面Ｈ１に熱結合されている（図５等参照）。   The endothermic surface 30a of the thermoelectric element 30 is thermally coupled to one end (A end) side of the heat transport member 50A, and the other end (B end) side of the heat transport member 50A is thermally coupled to the first heat transfer surface H1. (Refer to FIG. 5 etc.).

ここで、図５等に示すように、可撓性を有するシート状等に成形された熱輸送部材５０Ａは、バッテリモジュールＭ１、Ｍ２の外周面６０の左右側面の大部分と底面を覆うように配置されている。   Here, as shown in FIG. 5 and the like, the heat transport member 50A formed into a flexible sheet or the like covers most of the left and right side surfaces and the bottom surface of the outer peripheral surface 60 of the battery modules M1 and M2. Has been placed.

これにより、バッテリモジュールＭ１、Ｍ２の充放電時などに発生する熱は、外周面６０で構成される第１伝熱面Ｈ１に熱接合されている熱輸送部材５０Ａを介して熱電素子３０の吸熱面３０ａに効率的に集めることができる。   Thereby, the heat generated during charging / discharging of the battery modules M1 and M2 is absorbed by the thermoelectric element 30 through the heat transport member 50A that is thermally bonded to the first heat transfer surface H1 formed by the outer peripheral surface 60. It can be efficiently collected on the surface 30a.

そして、熱電素子３０の吸熱面３０ａに集められた熱は、熱電素子３０の放熱面３０ｂと熱接合される筐体１００の内周面（底面）１００ａで構成される第２伝熱面Ｈ２を介して筐体１００の外周面１００ｂから外気に放熱される。   Then, the heat collected on the heat absorption surface 30a of the thermoelectric element 30 passes through the second heat transfer surface H2 configured by the inner peripheral surface (bottom surface) 100a of the housing 100 that is thermally bonded to the heat dissipation surface 30b of the thermoelectric element 30. The heat is radiated from the outer peripheral surface 100b of the housing 100 to the outside air.

なお、図５に示すように、バッテリモジュールＭ２の端面には、バッテリモジュールＭ２を筐体１００内に固定する金属板等で構成されるブラケット６１がボルト６３により締結されている。   As shown in FIG. 5, a bracket 61 made of a metal plate or the like that fixes the battery module M2 in the housing 100 is fastened to the end surface of the battery module M2 by a bolt 63.

ブラケット６１の下端部には、バッテリモジュールＭ２の下面によりも下方に位置し、熱電素子３０の底面と同じ接地面となるＬ字型の固定部６２が形成されている。なお、ブラケット６１と熱電素子３０とは離間して設けられている。   At the lower end portion of the bracket 61, an L-shaped fixing portion 62 is formed which is located below the lower surface of the battery module M2 and serves as the same ground plane as the bottom surface of the thermoelectric element 30. The bracket 61 and the thermoelectric element 30 are provided apart from each other.

また、バッテリモジュールＭ２の他端面にも同様のブラケット６１が設けられている。また、バッテリモジュールＭ１の両端面にも同様のブラケット６１が設けられている。   A similar bracket 61 is also provided on the other end surface of the battery module M2. Similar brackets 61 are also provided on both end faces of the battery module M1.

これにより、バッテリモジュールＭ１、Ｍ２をブラケット６１により筐体１００内に固定した際に、ブラケット６１を介した熱伝導により、バッテリモジュールＭ１、Ｍ２の熱を筐体１００からの放熱に寄与することができる。   Thus, when the battery modules M1 and M2 are fixed in the housing 100 by the bracket 61, the heat of the battery modules M1 and M2 contributes to the heat radiation from the housing 100 by the heat conduction through the bracket 61. it can.

なお、ブラケット６１と熱電素子３０とは離間して設けられているので、熱電素子３０の熱がブラケット６１を介してバッテリモジュールＭ１、Ｍ２に戻ることを抑制することができる。   In addition, since the bracket 61 and the thermoelectric element 30 are provided apart from each other, it is possible to suppress the heat of the thermoelectric element 30 from returning to the battery modules M1 and M2 via the bracket 61.

また、図３等に示す構成例では、筐体１００内に２個のバッテリモジュールＭ１、Ｍ２を収容する場合を示しているが、バッテリモジュールの設置数はこれに限らず、１個のみ設ける場合でもよいし、或いは３個以上設けるようにしてもよい。   In the configuration example shown in FIG. 3 and the like, the case where two battery modules M1 and M2 are accommodated in the housing 100 is shown. However, the number of battery modules is not limited to this, and only one battery module is provided. Alternatively, three or more may be provided.

［第２の実施の形態に係るバッテリ冷却構造］
図７〜図９を参照して、第２の実施の形態に係るバッテリ冷却構造Ｂ２について説明する。 [Battery Cooling Structure According to Second Embodiment]
A battery cooling structure B2 according to the second embodiment will be described with reference to FIGS.

ここで、図７は、第２の実施の形態に係るバッテリ冷却構造Ｂ２を示す一部断面図、図８は、図７のＡ−Ａ線断面図、図９は、バッテリ冷却構造Ｂ２の構成例を示す一部断面斜視図、図９は、バッテリ冷却構造Ｂ２に適用される熱輸送部材５０Ｂの構成例を模式的に示す平面図である。   7 is a partial cross-sectional view showing the battery cooling structure B2 according to the second embodiment, FIG. 8 is a cross-sectional view taken along the line AA of FIG. 7, and FIG. 9 is a configuration of the battery cooling structure B2. FIG. 9 is a plan view schematically showing a configuration example of a heat transport member 50B applied to the battery cooling structure B2.

なお、第１の実施の形態に係るバッテリ冷却構造Ｂ１と同様の構成については、同一符号を付して重複した説明は省略する。   In addition, about the structure similar to battery cooling structure B1 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

第２の実施の形態に係るバッテリ冷却構造Ｂ２では、第１の実施の形態に係るバッテリ冷却構造Ｂ１の構成に加えて、熱電素子３０と筐体１００の内周面１００ａで構成される第２伝熱面Ｈ２との間に、熱輸送部材５０Ｂが設けられている。   In the battery cooling structure B2 according to the second embodiment, in addition to the configuration of the battery cooling structure B1 according to the first embodiment, a second structure constituted by the thermoelectric element 30 and the inner peripheral surface 100a of the housing 100 is provided. A heat transport member 50B is provided between the heat transfer surface H2.

そして、熱電素子３０の放熱面３０ｂは、図２に示すような構成の熱輸送部材５０Ｂの一端（Ａ端）側と熱結合され、熱輸送部材５０Ｂの他端（Ｂ端）側は第２伝熱面Ｈ２と熱結合されている（図８等参照）。   The heat radiation surface 30b of the thermoelectric element 30 is thermally coupled to one end (A end) side of the heat transport member 50B configured as shown in FIG. 2, and the other end (B end) side of the heat transport member 50B is second. It is thermally coupled to the heat transfer surface H2 (see FIG. 8 and the like).

また、筐体１００内の熱輸送部材５０Ａと熱輸送部材５０Ｂとの間には、発泡樹脂等で構成される断熱材１０１が設けられている。これにより、熱輸送部材５０Ａと熱輸送部材５０Ｂとの間の熱戻りを抑制することができる。   Further, a heat insulating material 101 made of foamed resin or the like is provided between the heat transport member 50A and the heat transport member 50B in the housing 100. Thereby, the heat return between the heat transport member 50A and the heat transport member 50B can be suppressed.

ここで、図９を参照して、バッテリ冷却構造Ｂ２に適用される熱輸送部材５０Ｂの構成例について説明する。   Here, with reference to FIG. 9, the structural example of the heat transport member 50B applied to battery cooling structure B2 is demonstrated.

図９に示すように熱輸送部材５０Ｂは、櫛歯状の熱輸送セル５０Ｂ１〜５０Ｂ４を備えている。   As shown in FIG. 9, the heat transport member 50B includes comb-shaped heat transport cells 50B1 to 50B4.

熱輸送セル５０Ｂ１と５０Ｂ２は、櫛歯型の部位と反対側の背部同士が対向するように配置されている。また、同様に熱輸送セル５０Ｂ３と５０Ｂ４は、櫛歯型の部位と反対側の背部同士が対向するように配置されている。   The heat transport cells 50B1 and 50B2 are arranged so that the back portions on the opposite side to the comb-shaped portion face each other. Similarly, the heat transport cells 50B3 and 50B4 are arranged so that the back portions on the opposite side to the comb-shaped portion face each other.

そして、図９に示すように、符号Ａで示す部位をＡ端として、バッテリモジュールＭ１、Ｍ２側の熱電素子３０の放熱面３０ｂに密着状態で配設される。また、符号Ｂで示す部位をＢ端として、バッテリモジュールＭ１、Ｍ２側の熱輸送セル５０Ａと所定の間隙を挟んで対向して配置される。   Then, as shown in FIG. 9, the portion indicated by the symbol A is disposed at the A end, and is disposed in close contact with the heat radiation surface 30b of the thermoelectric element 30 on the battery modules M1 and M2 side. Further, with the portion indicated by reference sign B as the B end, the heat transport cell 50A on the battery modules M1 and M2 side is arranged to face the gap with a predetermined gap.

なお、熱輸送セル５０Ａと熱輸送セル５０Ｂとの間隙には、断熱材１０１が挟持される。   Note that the heat insulating material 101 is sandwiched in the gap between the heat transport cell 50A and the heat transport cell 50B.

また、熱輸送セル５０Ｂの外側の面は、筐体１００の内周面１００ａと密着状態で配設される。   Further, the outer surface of the heat transport cell 50B is disposed in close contact with the inner peripheral surface 100a of the housing 100.

また、熱輸送部材５０Ｂの熱輸送セルの設置数は、図９に示すような４つの場合に限られず、バッテリモジュールＭの大きさや設置数等に応じて適宜増減することができる。   Further, the number of installed heat transport cells of the heat transport member 50B is not limited to four as shown in FIG. 9, and can be appropriately increased or decreased according to the size, the number of installed, etc. of the battery module M.

このような構成により、バッテリモジュールＭ１、Ｍ２の充放電時などに発生する熱は、外周面６０で構成される第１伝熱面Ｈ１に熱接合されている熱輸送部材５０Ａを介して熱電素子３０の吸熱面３０ａに効率的に集めることができる。   With such a configuration, heat generated during charging / discharging of the battery modules M1 and M2 or the like is performed through the heat transport member 50A that is thermally bonded to the first heat transfer surface H1 formed by the outer peripheral surface 60. It is possible to efficiently collect the heat absorption surfaces 30a.

そして、熱電素子３０の吸熱面３０ａに集められた熱は、放熱面３０ｂと熱接合される熱輸送セル５０Ｂを介して筐体１００の内周面（底面）１００ａで構成される第２伝熱面Ｈ２に熱輸送され、筐体１００の外周面１００ｂから外気に効率的に放熱される。   Then, the heat collected on the heat absorption surface 30a of the thermoelectric element 30 is a second heat transfer configured by the inner peripheral surface (bottom surface) 100a of the housing 100 via the heat transport cell 50B thermally bonded to the heat dissipation surface 30b. The heat is transported to the surface H2 and efficiently radiated from the outer peripheral surface 100b of the housing 100 to the outside air.

これにより、バッテリモジュールＭ１、Ｍ２を効率的に冷却することができる。   Thereby, the battery modules M1 and M2 can be efficiently cooled.

［第３の実施の形態に係るバッテリ冷却構造］
図１０〜図１２を参照して、第３の実施の形態に係るバッテリ冷却構造Ｂ３について説明する。 [Battery Cooling Structure According to Third Embodiment]
The battery cooling structure B3 according to the third embodiment will be described with reference to FIGS.

ここで、図１０は、第３の実施の形態に係るバッテリ冷却構造Ｂ３を示す一部断面図、図１１は、図１０のＡ−Ａ線断面図、図１２は、バッテリ冷却構造Ｂ３の構成例を示す一部断面斜視図である。   Here, FIG. 10 is a partial cross-sectional view showing a battery cooling structure B3 according to the third embodiment, FIG. 11 is a cross-sectional view taken along line AA of FIG. 10, and FIG. 12 is a configuration of the battery cooling structure B3. It is a partial cross section perspective view which shows an example.

なお、第１の実施の形態に係るバッテリ冷却構造Ｂ１と同様の構成については、同一符号を付して重複した説明は省略する。   In addition, about the structure similar to battery cooling structure B1 which concerns on 1st Embodiment, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

第３の実施の形態に係るバッテリ冷却構造Ｂ３では、第１の実施の形態に係るバッテリ冷却構造Ｂ１の構成に加えて、筐体１００の外周面１００ｂで構成される第３伝熱面Ｈ３を備え、第３伝熱面Ｈ３の少なくとも一部に、前出の図２に示すような構成を有する熱輸送部材５０Ｃが配置されている。なお、図１２に示すように、熱輸送部材５０Ｃによって、筐体１００の外周面１００ｂの底面および左右側面の大部分が占められるように配設される。   In the battery cooling structure B3 according to the third embodiment, in addition to the configuration of the battery cooling structure B1 according to the first embodiment, a third heat transfer surface H3 configured by the outer peripheral surface 100b of the housing 100 is provided. The heat transport member 50C having the configuration shown in FIG. 2 is disposed on at least a part of the third heat transfer surface H3. As shown in FIG. 12, the heat transport member 50C is disposed so as to occupy most of the bottom surface and the left and right side surfaces of the outer peripheral surface 100b of the housing 100.

このような構成により、バッテリモジュールＭ１、Ｍ２の充放電時などに発生する熱は、外周面６０で構成される第１伝熱面Ｈ１に熱接合されている熱輸送部材５０Ａを介して熱電素子３０の吸熱面３０ａに効率的に集めることができる。   With such a configuration, heat generated during charging / discharging of the battery modules M1 and M2 or the like is performed through the heat transport member 50A that is thermally bonded to the first heat transfer surface H1 formed by the outer peripheral surface 60. It is possible to efficiently collect the heat absorption surfaces 30a.

そして、熱電素子３０の吸熱面３０ａに集められた熱は、熱電素子３０の放熱面３０ｂと熱接合される筐体１００の内周面（底面）１００ａで構成される第２伝熱面Ｈ２を介して筐体１００の外周面１００ｂで構成される第３伝熱面Ｈ３に伝熱される。   Then, the heat collected on the heat absorption surface 30a of the thermoelectric element 30 passes through the second heat transfer surface H2 configured by the inner peripheral surface (bottom surface) 100a of the housing 100 that is thermally bonded to the heat dissipation surface 30b of the thermoelectric element 30. The heat is transferred to the third heat transfer surface H3 configured by the outer peripheral surface 100b of the housing 100.

さらに、第３伝熱面Ｈ３に伝熱された熱は、筐体１００の外周面１００ｂに広く熱輸送され、外気に効率的に放熱される。   Furthermore, the heat transferred to the third heat transfer surface H3 is widely transported to the outer peripheral surface 100b of the housing 100 and efficiently radiated to the outside air.

これにより、バッテリモジュールＭ１、Ｍ２を効率的に冷却することができる。   Thereby, the battery modules M1 and M2 can be efficiently cooled.

以上本発明者によってなされた発明を実施の形態に基づき具体的に説明したが、本明細書で開示された実施の形態はすべての点で例示であって開示された技術に限定されるものではないと考えるべきである。すなわち、本発明の技術的な範囲は、前記の実施の形態における説明に基づいて制限的に解釈されるものでなく、あくまでも特許請求の範囲の記載にしたがって解釈すべきであり、特許請求の範囲の記載技術と均等な技術および特許請求の範囲内でのすべての変更が含まれる。   Although the invention made by the present inventor has been specifically described based on the embodiments, the embodiments disclosed herein are illustrative in all respects and are not limited to the disclosed technology. Should not be considered. That is, the technical scope of the present invention should not be construed restrictively based on the description in the above embodiment, but should be construed according to the description of the scope of claims. All the modifications within the scope of the claims and the equivalent technique to the described technique are included.

例えば、第２の実施の形態に係るバッテリ冷却構造Ｂ２の構成と、第３の実施の形態に係るバッテリ冷却構造Ｂ３の構成とを組み合わせるようにしてもよい。   For example, you may make it combine the structure of battery cooling structure B2 which concerns on 2nd Embodiment, and the structure of battery cooling structure B3 which concerns on 3rd Embodiment.

即ち、第２の実施の形態に係るバッテリ冷却構造Ｂ２の構成に加えて、筐体１００の外周面１００ｂで構成される第３伝熱面Ｈ３の少なくとも一部に熱輸送部材５０Ｃを配置するようにできる。   That is, in addition to the configuration of the battery cooling structure B2 according to the second embodiment, the heat transport member 50C is arranged on at least a part of the third heat transfer surface H3 configured by the outer peripheral surface 100b of the housing 100. Can be.

このような構成により、バッテリモジュールＭ１、Ｍ２の充放電時などに発生する熱は、外周面６０で構成される第１伝熱面Ｈ１に熱接合されている熱輸送部材５０Ａを介して熱電素子３０の吸熱面３０ａに効率的に集められる。そして、熱電素子３０の吸熱面３０ａに集められた熱は、放熱面３０ｂと熱接合される熱輸送セル５０Ｂを介して筐体１００の内周面（底面）１００ａで構成される第２伝熱面Ｈ２に熱輸送され、筐体１００の外周面１００ｂに伝熱される。   With such a configuration, heat generated during charging / discharging of the battery modules M1 and M2 and the like is performed through the heat transport member 50A that is thermally bonded to the first heat transfer surface H1 formed by the outer peripheral surface 60. It is efficiently collected on 30 endothermic surfaces 30a. Then, the heat collected on the heat absorption surface 30a of the thermoelectric element 30 is a second heat transfer configured by the inner peripheral surface (bottom surface) 100a of the housing 100 via the heat transport cell 50B thermally bonded to the heat dissipation surface 30b. Heat transported to the surface H <b> 2 and heat transfer to the outer peripheral surface 100 b of the housing 100.

さらに、第３伝熱面Ｈ３に伝熱された熱は、筐体１００の外周面１００ｂに広く熱輸送され、外気に効率的に放熱される。   Furthermore, the heat transferred to the third heat transfer surface H3 is widely transported to the outer peripheral surface 100b of the housing 100 and efficiently radiated to the outside air.

これにより、バッテリモジュールＭ１、Ｍ２をより効率的に冷却することができる。   Thereby, the battery modules M1 and M2 can be cooled more efficiently.

また、熱電素子３０の吸熱面３０ａと放熱面３０ｂを入れ替える（即ち、ペルチェ素子等への通電方向を逆にする）ことにより、バッテリモジュールＭ１、Ｍ２を加熱する用途に利用することもできる。   Moreover, it can also utilize for the use which heats battery module M1, M2 by replacing the heat absorption surface 30a and the heat radiating surface 30b of the thermoelectric element 30 (namely, the energization direction to a Peltier device etc. is reversed).

即ち、寒冷環境等において、バッテリモジュールＭ１、Ｍ２の温度が低下して、バッテリ特性が低下する場合などに、熱電素子３０の吸熱面３０ａと放熱面３０ｂとを入れ替えることにより、バッテリモジュールＭ１、Ｍ２を適度に加熱して、バッテリ特性を向上させる役割を担わせることができる。   That is, in a cold environment or the like, when the temperature of the battery modules M1 and M2 decreases and the battery characteristics deteriorate, the battery modules M1 and M2 are replaced by replacing the heat absorption surface 30a and the heat dissipation surface 30b of the thermoelectric element 30. Can be heated moderately to play a role of improving battery characteristics.

Ｂ（Ｂ１、Ｂ２、Ｂ３）…バッテリ冷却構造
Ｃ…バッテリセル
Ｄ…放熱部
Ｈ１…第１伝熱面
Ｈ２…第２伝熱面
Ｈ３…第３伝熱面
Ｍ（Ｍ１、Ｍ２）…バッテリモジュール
３０…熱電素子（ペルチェ素子）
３０ａ…吸熱面
３０ｂ…放熱面
５０（５０Ａ、５０Ｂ、５０Ｃ）…熱輸送部材
５０Ｂ１〜５０Ｂ４…熱輸送セル
５１…流路
６０…バッテリモジュールの外周面
６１…ブラケット
６２…固定部
６３…ボルト
１００…筐体
１００ａ…内周面
１００ｂ…外周面
１０１…断熱材
２００…熱媒
Ｇ…気相
Ｌ…液相 B (B1, B2, B3) ... Battery cooling structure C ... Battery cell D ... Heat dissipation portion H1 ... First heat transfer surface H2 ... Second heat transfer surface H3 ... Third heat transfer surface M (M1, M2) ... Battery module 30 ... Thermoelectric element (Peltier element)
30a ... endothermic surface 30b ... heat radiating surface 50 (50A, 50B, 50C) ... heat transport member 50B1-50B4 ... heat transport cell 51 ... flow path 60 ... outer peripheral surface of battery module 61 ... bracket 62 ... fixed part 63 ... bolt 100 ... Housing 100a ... Inner peripheral surface 100b ... Outer peripheral surface 101 ... Insulating material 200 ... Heat medium G ... Gas phase L ... Liquid phase

Claims (5)

１または２以上のバッテリセル（Ｃ）を備えたバッテリモジュール（Ｍ）の外周面（６０）で構成される第１伝熱面（Ｈ１）と、
前記バッテリモジュールを収容する筐体（１００）の内周面（１００ａ）で構成される第２伝熱面（Ｈ２）と、
前記第１伝熱面と前記第２伝熱面の間に配置され、吸熱面（３０ａ）と放熱面（３０ｂ）を備えた熱電素子（３０）と、
を備え、
前記熱電素子と前記第１伝熱面の間、または前記熱電素子と前記第２伝熱面の間の少なくとも一方に、気相と液相とに相変化する熱媒の循環により熱輸送を行う熱輸送部材（５０Ａ、５０Ｂ）が配置されていることを特徴とするバッテリ冷却構造。 A first heat transfer surface (H1) composed of an outer peripheral surface (60) of a battery module (M) having one or more battery cells (C);
A second heat transfer surface (H2) composed of an inner peripheral surface (100a) of a housing (100) that houses the battery module;
A thermoelectric element (30) disposed between the first heat transfer surface and the second heat transfer surface, comprising a heat absorption surface (30a) and a heat dissipation surface (30b);
With
Heat transport is performed between the thermoelectric element and the first heat transfer surface or between at least one of the thermoelectric element and the second heat transfer surface by circulation of a heat medium that changes phase between a gas phase and a liquid phase. A battery cooling structure in which heat transport members (50A, 50B) are arranged. 前記熱電素子の吸熱面は前記熱輸送部材の一端（Ａ端）側に熱結合され、該熱輸送部材の他端（Ｂ端）側は前記第１伝熱面に熱結合されていることを特徴とする請求項１に記載のバッテリ冷却構造。   The heat absorption surface of the thermoelectric element is thermally coupled to one end (A end) side of the heat transport member, and the other end (B end) side of the heat transport member is thermally coupled to the first heat transfer surface. The battery cooling structure according to claim 1, wherein: 前記熱電素子の放熱面は前記熱輸送部材の一端（Ａ端）側に熱結合され、該熱輸送部材の他端（Ｂ端）側は前記第２伝熱面に熱結合されていることを特徴とする請求項１または請求項２に記載のバッテリ冷却構造。   The heat dissipation surface of the thermoelectric element is thermally coupled to one end (A end) side of the heat transport member, and the other end (B end) side of the heat transport member is thermally coupled to the second heat transfer surface. The battery cooling structure according to claim 1, wherein the battery cooling structure is a battery cooling structure. 前記筐体内の前記熱輸送部材と前記第２伝熱面との間、または前記熱輸送部材同士の間には、断熱材（１０１）が設けられていることを特徴とする請求項１から請求項３の何れか１項に記載のバッテリ冷却構造。   The heat insulating material (101) is provided between the heat transport member and the second heat transfer surface in the housing or between the heat transport members. Item 4. The battery cooling structure according to any one of Items 3 to 3. 前記筐体の外周面（１００ｂ）で構成される第３伝熱面（Ｈ３）を備え、
前記第３伝熱面の少なくとも一部に、前記熱輸送部材（５０Ｃ）が配置されていることを特徴とする請求項１から請求項４の何れか１項に記載のバッテリ冷却構造。 A third heat transfer surface (H3) composed of the outer peripheral surface (100b) of the housing;
The battery cooling structure according to any one of claims 1 to 4, wherein the heat transport member (50C) is disposed on at least a part of the third heat transfer surface.
JP2015143823A 2015-07-21 2015-07-21 Battery cooling structure Pending JP2017027720A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108172929A (en) * 2017-12-22 2018-06-15 银隆新能源股份有限公司 Battery radiator structure and the battery pack with air-cooled radiating device
CN109818103A (en) * 2017-11-20 2019-05-28 本田技研工业株式会社 Battery module and electric vehicle
CN112186296A (en) * 2020-09-23 2021-01-05 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Battery thermal management structure

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109818103A (en) * 2017-11-20 2019-05-28 本田技研工业株式会社 Battery module and electric vehicle
JP2019096399A (en) * 2017-11-20 2019-06-20 本田技研工業株式会社 Battery module and electric vehicle
CN109818103B (en) * 2017-11-20 2022-09-20 本田技研工业株式会社 Storage battery module and electric vehicle
CN108172929A (en) * 2017-12-22 2018-06-15 银隆新能源股份有限公司 Battery radiator structure and the battery pack with air-cooled radiating device
CN108172929B (en) * 2017-12-22 2024-03-15 银隆新能源股份有限公司 Battery core heat radiation structure and battery pack with air cooling heat radiation device
CN112186296A (en) * 2020-09-23 2021-01-05 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Battery thermal management structure
CN112186296B (en) * 2020-09-23 2022-02-15 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） Battery thermal management structure

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