JP5808090B2 - Battery assembly - Google Patents

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JP5808090B2
JP5808090B2 JP2010186672A JP2010186672A JP5808090B2 JP 5808090 B2 JP5808090 B2 JP 5808090B2 JP 2010186672 A JP2010186672 A JP 2010186672A JP 2010186672 A JP2010186672 A JP 2010186672A JP 5808090 B2 JP5808090 B2 JP 5808090B2
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heat exchange
unit cells
heat
exchange member
sealed container
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JP2012043757A (en
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中濱　敬文
敬文 中濱
田多　伸光
伸光 田多
黒川　健也
健也 黒川
正志 首藤
正志 首藤
泰平 小山
泰平 小山
上村　晃正
晃正 上村
武夫 覚地
武夫 覚地
法仁 冨樫
法仁 冨樫
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Toshiba 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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Description

本発明の実施形態は、単位セルを複数有する組電池装置に関する。   Embodiments described herein relate generally to an assembled battery device having a plurality of unit cells.

ＨＥＶ（hybrid electric vehicle）、ＥＶ（electric vehicle）などの車両で使われる組電池装置は、車両内の限られた空間への配置のためコンパクトな形状を有しかつこれを適切な動作温度に保つための温度管理機能が求められる。コンパクトな形状の確保と、必要な温度管理とは、両立が難しい場合もある。例えば、空気の流れにより冷却などの温度管理を行うには、そのための空間を必要とするため、全体としてコンパクトな形状が確保されない可能性がある。また、通常は、単位セルを複数組み合わせて組電池装置を構成するため、この傾向はより顕著である。   An assembled battery device used in a vehicle such as a hybrid electric vehicle (HEV) or an electric vehicle (EV) has a compact shape for placement in a limited space in the vehicle and keeps it at an appropriate operating temperature. Temperature management function is required. Ensuring a compact shape and necessary temperature control may be difficult to achieve at the same time. For example, in order to perform temperature management such as cooling by the flow of air, a space for that purpose is required, and thus there is a possibility that a compact shape as a whole may not be ensured. In addition, since the assembled battery device is usually configured by combining a plurality of unit cells, this tendency is more remarkable.

特開２０１０−０５００００号公報JP 2010-050,000 A 特開２００９−１３４９３８号公報JP 2009-134938 A 特開２００８−０４７３７１号公報JP 2008-043771 A

本発明は、コンパクトな形状を保ちかつ温度管理も容易な、単位セルを複数有する組電池装置を提供することを目的とする。   An object of the present invention is to provide an assembled battery device having a plurality of unit cells that maintains a compact shape and is easy to manage temperature.

実施形態の組電池装置は、複数の単位セルと、密閉容器と、断熱部材層と、熱交換部材と、弾性部材層と、流体供給回収部とを持つ。複数の単位セルは、おのおのが矩形の厚板状の形状を有し、互いに背面と腹面とが、または背面どうしが、または腹面どうしが対向するようにひとつの方向に並べて配置され、かつ隣り合う単位セルが伸縮可能なばね機能を有するバスバーで電気的に導通されている。密閉容器は、前記複数の単位セルの全体を囲っている。断熱部材層は、前記密閉容器の内壁面上に設けられている。熱交換部材は、前記複数の単位セルのそれぞれの位置に応じるように、熱輸送流体を供給側の端部から回収側の端部へと流すジグザグ状に配置された流路を備え、かつ前記断熱部材層と前記複数の単位セルそれぞれのひとつの側面との間に挟まれるように設けられて、密構造になっている。また、弾性部材層は、前記熱交換部材と前記複数の単位セルを介して対向するように、前記密閉容器の内壁面と前記複数の単位セルそれぞれのひとつの側面との間に設けられている。また、流体供給回収部は、前記熱交換部材の前記流路の前記供給側の端部および前記回収側の端部の両者につながるように前記密閉容器の外側に設けられている。 The assembled battery device of the embodiment includes a plurality of unit cells, a sealed container, a heat insulating member layer, a heat exchange member, an elastic member layer, and a fluid supply / recovery unit . The plurality of unit cells each have a rectangular thick plate shape, and are arranged side by side in one direction so that the back surface and the abdominal surface, or the back surfaces, or the abdominal surfaces face each other , and are adjacent to each other. The unit cell is electrically connected by a bus bar having a spring function capable of expanding and contracting . Tight closed container is enclosed the entire of the plurality of unit cells. The heat insulating member layer is provided on the inner wall surface of the sealed container. The heat exchange member includes a flow path arranged in a zigzag shape for flowing the heat transport fluid from the supply-side end portion to the recovery-side end portion so as to correspond to each position of the plurality of unit cells , and A dense structure is provided so as to be sandwiched between the heat insulating member layer and one side surface of each of the plurality of unit cells . Further, the elastic member layer is provided between the inner wall surface of the sealed container and one side surface of each of the plurality of unit cells so as to face the heat exchange member via the plurality of unit cells. . The fluid supply / recovery unit is provided outside the sealed container so as to be connected to both the supply side end and the recovery side end of the flow path of the heat exchange member.

一実施形態である組電池装置の構成を示す縦断面図および横断面図。The longitudinal cross-sectional view and cross-sectional view which show the structure of the assembled battery apparatus which is one Embodiment. 図１中に示した熱交換部材１６の構成を示す分解斜視図。The disassembled perspective view which shows the structure of the heat exchange member 16 shown in FIG. 別の実施形態である組電池装置の構成を示す縦断面図。The longitudinal cross-sectional view which shows the structure of the assembled battery apparatus which is another embodiment.

以上を踏まえ、以下では実施形態の組電池装置を図面を参照しながら説明する。図１は、一実施形態である組電池装置の構成を示す縦断面図（図１（ａ））および横断面図（図１（ｂ））である。図１（ｂ）は、図１（ａ）中のＡ−Ａa位置における矢視方向断面に相当している。図１（ａ）の図示における上下で、この装置の通常使用時の上下を示している。ただし、この方向の設置はひとつの好ましい使用姿勢であるものの、使用姿勢がこれに限られるわけではない。   Based on the above, the assembled battery device of the embodiment will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view (FIG. 1 (a)) and a transverse sectional view (FIG. 1 (b)) showing a configuration of an assembled battery device according to an embodiment. FIG. 1B corresponds to a cross-section in the direction of the arrow at the position A-Aa in FIG. The upper and lower sides in the illustration of FIG. 1A indicate the upper and lower sides during normal use of the apparatus. However, although the installation in this direction is one preferable use posture, the use posture is not limited to this.

図１に示すように、この組電池装置は、単位セル１１、バスバー１２、スペーサ１３、密閉容器１４、断熱部材層１５、熱交換部材１６、バッテリ端子取り出し用容器貫通部材１７ａ、１７ｂ、バッテリ端子１８ａ、１８ｂ、流路接続用容器貫通部材１９ａ、１９ｂ、流体供給／回収部および熱交換部２１、流体供給管２２、接続部２３、２５、流体回収管２４を有する。   As shown in FIG. 1, this assembled battery device includes a unit cell 11, a bus bar 12, a spacer 13, a sealed container 14, a heat insulating member layer 15, a heat exchange member 16, battery terminal take-out container penetrating members 17 a and 17 b, and battery terminals. 18a, 18b, flow path connection container penetrating members 19a, 19b, fluid supply / recovery section and heat exchange section 21, fluid supply pipe 22, connection sections 23, 25, and fluid recovery pipe 24.

単位セル１１は、複数がひとつの方向に並べて設けられている。単位セル１１のおのおのは、矩形の厚板状の形状を有し、その背面と腹面とが、または背面どうしが、または腹面どうしが対向するように並べられている。この実施形態では、これらの単位セル１１を直列に接続するように、その電極１１ｔどうしを電気的に接続するバスバー１２を設け、このバスバー１２の配置を単純にするため、単位セル１１の背面どうし、または腹面どうしが対向するように並べられている。   A plurality of unit cells 11 are arranged in one direction. Each of the unit cells 11 has a rectangular plate-like shape, and is arranged so that the back surface and the abdominal surface, or the back surfaces, or the abdominal surfaces face each other. In this embodiment, a bus bar 12 for electrically connecting the electrodes 11t is provided so as to connect the unit cells 11 in series. In order to simplify the arrangement of the bus bars 12, the back surfaces of the unit cells 11 are connected to each other. Or, the abdomen are arranged so that they face each other.

複数の単位セル１１の電気的接続態様（直列、並列、またはそれらの混合）やバスバー１２の配置いかんによっては、隣り合う単位セル１１どうしの対向は、背面と腹面、背面どうし、腹面どうし、いかようにもなる。   Depending on the electrical connection mode of the plurality of unit cells 11 (series, parallel, or a mixture thereof) and the arrangement of the bus bars 12, the adjacent unit cells 11 may face each other between the back and abdomen, between the backs, and between the abdomen. It becomes like.

また、複数の単位セル１１のそれぞれの側面が、密閉容器１４の下側に設けられた熱交換部材１６と対向するように、単位セル１１のそれぞれは、その端子１１ｔのある面が一方のサイドに向く姿勢で配置されている。これは、熱交換部材１６との対向面積を考えると、端子１１ｔのある面の反対側の面より、側面の方が一般的に面積大であり熱交換に有利であるためである。   In addition, each of the unit cells 11 has a surface having a terminal 11t on one side so that each side surface of the plurality of unit cells 11 faces the heat exchange member 16 provided on the lower side of the sealed container 14. It is arranged in a posture that faces. This is because when the area facing the heat exchange member 16 is considered, the side surface is generally larger in area than the surface opposite to the surface having the terminal 11t, which is advantageous for heat exchange.

単位セル１１のそれぞれには、端子１１ｔが正極、負極の２端子、設けられている。これらの端子１１ｔは、バスバー１２で別の単位セル１１に電気的に接続されるか、または、この組電池装置の全体としての端子１８ａ、１８ｂに接続されている。   Each unit cell 11 is provided with two terminals 11t, a positive electrode and a negative electrode. These terminals 11t are electrically connected to another unit cell 11 by the bus bar 12, or are connected to terminals 18a and 18b as a whole of the assembled battery device.

バスバー１２は、単位セル１１の端子１１ｔどうしを電気的に接続する部材である。単位セル１１どうしの配置の許容誤差を考慮して、図示するように、伸縮可能なばね機能を有していると、取り付けやその後のバッテリ端子１１ｔの位置に微変動が生じたときにも対応でき好ましい。   The bus bar 12 is a member that electrically connects the terminals 11 t of the unit cell 11. Considering the tolerance of the arrangement of the unit cells 11 and having a spring function that can be expanded and contracted as shown in the figure, it is possible to cope with a slight change in the position of the battery terminal 11t after installation or later. This is preferable.

スペーサ１３は、単位セル１１どうしの間を埋めるように設けられる。スペーサ１３を設けず空間（空洞）とするより、単位セル１１と熱交換部材１６との間での熱輸送が円滑になる。また、各単位セル１１の温度偏差もより小さくできる。そのため、熱伝導率のある程度高い材質が好ましいが、単位セル１１の外面どうしを互いに電気絶縁する必要がある場合には、絶縁性の材質の部材を用いるか、または絶縁性の層を表面に有した部材を用いる。なお、単位セル１１どうしの間の寸法をごく小さく設定し、スペーサ１３を排することにしてもよい。   The spacer 13 is provided so as to fill the space between the unit cells 11. Rather than providing the spacer 13 and making it a space (cavity), heat transport between the unit cell 11 and the heat exchange member 16 becomes smooth. Further, the temperature deviation of each unit cell 11 can be made smaller. Therefore, a material having a certain degree of thermal conductivity is preferable. However, when it is necessary to electrically insulate the outer surfaces of the unit cells 11 from each other, an insulating material member is used or an insulating layer is provided on the surface. Use the member. In addition, the dimension between the unit cells 11 may be set to be extremely small, and the spacer 13 may be eliminated.

密閉容器１４は、少なくとも、単位セル１１の全体、および熱交換部材１６を囲うように設けられる。好ましくは、密閉容器１４の内壁面上は、断熱部材層１５とする。容器１４を密閉構造としたことにより、この容器１４内で冷却／加温のため気流を形成することは意図しない。すなわち、いわゆる空冷温機能を排し、冷却／加温はもっぱら熱交換部材１６によるように構成している。このため、熱交換部材１６も密閉容器１４内に配置される。そして、さらには、単位セル１１からみて、その熱交換が熱交換部材１６との間でほとんど完結されることを意図して、密閉容器１４の内壁面全部に断熱部材層１５を設けている。   The sealed container 14 is provided so as to surround at least the entire unit cell 11 and the heat exchange member 16. Preferably, the heat insulating member layer 15 is formed on the inner wall surface of the sealed container 14. By making the container 14 have a sealed structure, it is not intended to form an air flow for cooling / heating in the container 14. That is, the so-called air-cooling temperature function is eliminated, and cooling / heating is configured exclusively by the heat exchange member 16. For this reason, the heat exchange member 16 is also arranged in the sealed container 14. Further, in view of the unit cell 11, the heat insulating member layer 15 is provided on the entire inner wall surface of the sealed container 14 with the intention that the heat exchange with the heat exchange member 16 is almost completed.

このように断熱部材層１５を設ければ、容器１４の外側からの熱の移動もほぼ遮断されるため、組電池装置として温度管理上好ましい。ただし、そのような熱の移動があっても熱交換部材１６による熱交換が機能しなくなるわけではないので、断熱部材層１５は必須ではない。また、断熱部材層１５を容器１４の内壁全面ではなく、一部のみに設けることも考えられる。例えば、熱交換部材１６と密閉容器１４との間に少なくとも断熱部材層１５を配置するようにする。これは、熱交換部材１６を、外部との意図しない熱移動から隔離し、単位セル１１との間での熱交換に効率よく振り向けるためである。   If the heat insulating member layer 15 is provided in this manner, the movement of heat from the outside of the container 14 is substantially cut off, which is preferable in terms of temperature management as an assembled battery device. However, since the heat exchange by the heat exchange member 16 does not stop even if such heat transfer occurs, the heat insulating member layer 15 is not essential. It is also conceivable that the heat insulating member layer 15 is provided not on the entire inner wall of the container 14 but only on a part thereof. For example, at least the heat insulating member layer 15 is disposed between the heat exchange member 16 and the sealed container 14. This is because the heat exchange member 16 is isolated from unintended heat transfer with the outside and efficiently directed to heat exchange with the unit cell 11.

なお、容器１４として金属などの非絶縁性の材質のものを採用し、断熱部材層１５を熱交換部材１６がある側とは反対側の容器１４の内壁面上に設けない場合にあっては、単位セル１１の外面どうしを互いに電気絶縁する必要がもしあれば、単位セル１１と容器１４の内壁面との間に、絶縁シートを介在させる。   In the case where a non-insulating material such as a metal is used as the container 14 and the heat insulating member layer 15 is not provided on the inner wall surface of the container 14 opposite to the side where the heat exchange member 16 is provided. If it is necessary to electrically insulate the outer surfaces of the unit cells 11 from each other, an insulating sheet is interposed between the unit cells 11 and the inner wall surface of the container 14.

密閉容器１４およびその内壁面上の断熱部材層１５は、例えば、図１（ｂ）に示すように、そのふたとなる側の、密閉容器ふた側１４ａおよび断熱部材層ふた側１５ａとの組み合わせで、密閉構造にすることができる。図示するように、単位セル１１の端子１１ｔに対向する側に、密閉容器ふた側１４ａおよび断熱部材層ふた側１５ａを設ければ、この組電池装置を組み立てる上で少なくとも都合がよい。   For example, as shown in FIG. 1B, the airtight member 14 and the heat insulating member layer 15 on the inner wall surface of the airtight container 14 are combined with the airtight member lid side 14a and the heat insulating member layer lid side 15a on the lid side. , Can be a sealed structure. As shown in the drawing, if a sealed container lid side 14a and a heat insulating member layer lid side 15a are provided on the side of the unit cell 11 facing the terminal 11t, it is at least convenient for assembling the assembled battery device.

また、そのような密閉容器ふた側１４ａおよび断熱部材層ふた側１５ａの配置において、これらを取り外せるように構成すれば、端子１１ｔにアクセスが容易になることで、内部の単位セル１１のメンテナンスを行う上でも好ましくなる。密閉容器ふた側１４ａおよび断熱部材層ふた側１５ａを、密閉容器１４および断熱部材層１５との間で取り外し、固定するには、種々の公知の固定方法（例えばねじ止めなど：ねじは不図示）を用いることができる。   In addition, in the arrangement of the airtight container lid side 14a and the heat insulating member layer lid side 15a, if these are configured to be removable, the terminal 11t can be easily accessed, so that the internal unit cell 11 is maintained. Also preferred above. In order to remove and fix the airtight container lid side 14a and the heat insulating member layer cover side 15a between the airtight container 14 and the heat insulating member layer 15, various known fixing methods (for example, screwing: screws are not shown). Can be used.

熱交換部材１６は、複数の単位セル１１のそれぞれの側面と対向するように、密閉容器１４内に配置されている。熱交換部材１６の内部には、熱輸送流体（例えば水）を流すための流路１６ｃが設けられており、熱伝導を良好にするため、流路１６ｃを除き密構造になっている。材質としては、例えば、アルミニウムなどの金属、またはフィラーを混ぜて熱伝導性を改善した樹脂などが挙げられる。金属などの非絶縁性の材質を採用した場合であって、単位セル１１の外面どうしを互いに電気絶縁する必要がある場合には、単位セル１１と熱交換部材１６との間に、絶縁シートを介在させる。   The heat exchange member 16 is disposed in the sealed container 14 so as to face the side surfaces of the plurality of unit cells 11. A flow path 16c for flowing a heat transport fluid (for example, water) is provided inside the heat exchange member 16, and has a dense structure except for the flow path 16c in order to improve heat conduction. Examples of the material include a metal such as aluminum, or a resin in which a thermal conductivity is improved by mixing a filler. In the case where a non-insulating material such as a metal is adopted and the outer surfaces of the unit cells 11 need to be electrically insulated from each other, an insulating sheet is placed between the unit cell 11 and the heat exchange member 16. Intervene.

熱交換部材１６の流路１６ｃは、流路接続用容器貫通部材１９ａの側から、流路接続用容器貫通部材１９ｂ側へとその形状が例えばジグザグ状に連なる一筋の流路である。熱交換部材１６にこのような流路１６ｃを設けるため、この実施形態では、一例として、上側の部材１６ａと下側の部材１６ｂとを対向させた構成としている。これらの部材１６ａ、１６ｂの相互に対向されるべき面にそれぞれ溝を形成し、対向させ組み立てることで流路１６ｃとしている（図２で再度触れる）。   The flow path 16c of the heat exchange member 16 is a single flow path whose shape is continuous in, for example, a zigzag shape from the flow path connecting container penetrating member 19a side to the flow path connecting container penetrating member 19b side. In order to provide such a flow path 16c in the heat exchange member 16, in this embodiment, as an example, the upper member 16a and the lower member 16b are opposed to each other. Grooves are formed on the surfaces of these members 16a and 16b that are to be opposed to each other, and are assembled to face each other to form the flow path 16c (re-contacted in FIG. 2).

バッテリ端子取り出し用容器貫通部材１７ａ、１７ｂは、容器１４および断熱部材層１５を貫通して設けられた、内部にある単位セル１１の端子１１ｔからの（への）電気導通部材を引き出す（引き込む）空間を確保する部材である。この内側に電気導通部材を通すことにより、この組電池装置としての端子１８ａ、１８ｂを容器１４の外側に設けることができる。密閉容器１４が導電性の素材で構成されている場合には、これらの貫通部材１７ａ、１７ｂは、端子１８ａ、１８ｂとの電気絶縁性を確保するため、非導電性の素材のものを用いる。   The battery terminal take-out container penetrating members 17a and 17b draw out (draw in) the electrically conductive member from (to) the terminal 11t of the unit cell 11 provided inside through the container 14 and the heat insulating member layer 15. It is a member that secures space. By passing the electrical conduction member through the inside, the terminals 18 a and 18 b as the assembled battery device can be provided outside the container 14. When the sealed container 14 is made of a conductive material, these penetrating members 17a and 17b are made of a non-conductive material in order to ensure electrical insulation with the terminals 18a and 18b.

バッテリ端子１８ａ、１８ｂは、それぞれ容器１４の外側に設けられた、それぞれ、この組電池装置としての正極、負極の端子である。   The battery terminals 18a and 18b are terminals of a positive electrode and a negative electrode, respectively, as the assembled battery device, provided on the outside of the container 14, respectively.

流路接続用容器貫通部材１９ａ、１９ｂは、容器１４および断熱部材層１５を貫通して、熱交換部材１６の流路１６ｃを延長するように設けられている。また、さらに、これらの貫通部材１９ａ、１９ｂは、容器１４の外側で、管２２、２４の端部である接続部２３、２５との接続の仲介機能を担うように設けられている。貫通部材１９ａ、１９ｂと熱交換部材の流路１６ｃとは、液体シール性が保たれるように例えばオーリング（不図示）などを介して対向している。   The channel connecting container penetrating members 19 a and 19 b are provided so as to extend through the channel 14 c of the heat exchange member 16 through the container 14 and the heat insulating member layer 15. Furthermore, these penetrating members 19a and 19b are provided outside the container 14 so as to have a mediating function of connection with the connection portions 23 and 25 which are the end portions of the tubes 22 and 24. The penetrating members 19a and 19b and the heat exchange member flow path 16c are opposed to each other through, for example, an O-ring (not shown) or the like so as to maintain the liquid sealing property.

流体供給／回収部および熱交換部２１は、流体供給管２２および貫通部材１９ａを介して熱交換部材１６の流路１６ｃに熱輸送流体を供給し、かつ、貫通部材１９ｂおよび流体回収管２４を介して流路１６ｃからその流体を回収する。また、供給する流体と回収された流体とは一般に温度が異なるので、回収から再度供給するときに熱交換を行い、回収温度の流体を供給温度の流体に温度変化させる。   The fluid supply / recovery unit and the heat exchange unit 21 supply the heat transport fluid to the flow path 16c of the heat exchange member 16 through the fluid supply pipe 22 and the penetration member 19a, and the penetration member 19b and the fluid recovery pipe 24 are connected to each other. Then, the fluid is recovered from the flow path 16c. In addition, since the temperature of the fluid to be supplied is generally different from that of the recovered fluid, heat exchange is performed when supplying again from recovery, and the fluid at the recovery temperature is changed to the fluid at the supply temperature.

流体供給管２２は、流体供給／回収部および熱交換部２１からの流体を熱交換部材１６方へと輸送する管である。流体回収管２４は、熱交換部材１６方からの流体を流体供給／回収部および熱交換部２１へと輸送する管である。流体供給管２２、流体回収管２４は、それぞれ、その端部が接続部（フランジ）２３、２５になっており、それらを介してそれぞれ、貫通部材１９ａ、１９ｂに接続されている。   The fluid supply pipe 22 is a pipe that transports the fluid from the fluid supply / recovery unit and the heat exchange unit 21 toward the heat exchange member 16. The fluid recovery pipe 24 is a pipe that transports the fluid from the heat exchange member 16 to the fluid supply / recovery section and the heat exchange section 21. End portions of the fluid supply pipe 22 and the fluid recovery pipe 24 are connection parts (flanges) 23 and 25, respectively, and are connected to the penetrating members 19a and 19b, respectively.

図２は、図１中に示した熱交換部材１６の構成を示す分解斜視図である。図２において、図１中に示した構成と対応するものには同一の符号を付してある。   FIG. 2 is an exploded perspective view showing the configuration of the heat exchange member 16 shown in FIG. In FIG. 2, the same reference numerals are given to the components corresponding to those shown in FIG.

図２に示すように、密構造の熱交換部材１６の内部に流路１６ｃを形成するには、対向する２枚の板状の部材１６ａ、１６ｂにそれぞれ、位置的に重ね合わせることができる溝１６ｃａ、１６ｃｂを設け、部材１６ａ、１６ｂを互いに対向させるように組み立てればよい。このような溝１６ｃａ、１６ｃｂを形成するには、溝削り出し加工や、金型を用いた鋳造や射出成型などを用いることができる。２枚の部材１６ａ、１６ｂを対向させ組み合わせたときの溝１６ｃの液体シール性を確保するためには、例えば、あらかじめ、溝１６ｃａ（または１６ｃｂ）を挟むようにパッキン部材（不図示）を位置させるように部材１６ａ（または１６ｂ）を構成すればよい。   As shown in FIG. 2, in order to form the flow path 16c in the heat exchange member 16 having a dense structure, grooves that can be overlapped with the two opposing plate-like members 16a and 16b, respectively. 16ca and 16cb may be provided and the members 16a and 16b may be assembled so as to face each other. In order to form such grooves 16ca and 16cb, groove cutting, casting using a mold, injection molding, or the like can be used. In order to ensure the liquid sealing property of the groove 16c when the two members 16a and 16b are opposed to each other, for example, a packing member (not shown) is previously positioned so as to sandwich the groove 16ca (or 16cb). The member 16a (or 16b) may be configured as described above.

熱交換部材１６の以上の構成は、一例である。組み合わせる部材をもっと多数とし、例えば、流路１６ｃが進行する方向に細分化された部材の組み合わせとすることもできる。このようにユニット化すれば、単位セル１１の配置数に応じて熱交換部材１６の長手方向寸法を加減することができる。   The above configuration of the heat exchange member 16 is an example. More members can be combined, for example, a combination of members subdivided in the direction in which the flow path 16c travels. When unitized in this way, the longitudinal dimension of the heat exchange member 16 can be adjusted depending on the number of unit cells 11 arranged.

以上説明した実施形態の組電池装置によれば、これに気流を流すための大きな空間やダクトが必要なくなり、全体としてコンパクトな形状の組電池装置になる。また、単位セル１１との熱交換を熱交換部材１６との間で集中的に、またはそこまで行かなくとも主として、行わせるように構成しているので、温度管理が容易になる。例えば、各単位セル１１の温度不均一性をより軽減するように、熱交換部材１６の流路１６ｃの構成を改良する（例えば配置密度や断面積を流路の進行方向に向かって変動させる）ことも容易である。   According to the assembled battery device of the embodiment described above, a large space and a duct for flowing an air flow are not required, and the assembled battery device has a compact shape as a whole. Further, since the heat exchange with the unit cell 11 is performed intensively with the heat exchange member 16 or mainly without going to the heat exchange member 16, the temperature management is facilitated. For example, the configuration of the flow path 16c of the heat exchange member 16 is improved so as to further reduce the temperature non-uniformity of each unit cell 11 (for example, the arrangement density and the cross-sectional area are changed toward the traveling direction of the flow path). It is also easy.

断熱部材層１５が容器１４の内壁面の全面に設けられている場合には、冷却水の供給が止まっても、熱交換部材１６の熱容量と外部との断熱とにより、しばらくは、各単位セル１１を冷却する効果が継続する。これは、ＥＶなどで走行から停止に移行したときの状態として想定されるので、そのような使用にも適していると言える。   In the case where the heat insulating member layer 15 is provided on the entire inner wall surface of the container 14, even if the supply of cooling water is stopped, each unit cell is kept for a while due to the heat capacity of the heat exchange member 16 and heat insulation from the outside. The effect of cooling 11 continues. Since this is assumed as a state when shifting from running to stopping by EV or the like, it can be said that it is suitable for such use.

また、流体供給／回収部および熱交換部２１は、冷却用の流体を供給するだけでなく、場合によっては、加温用の流体を供給するようにしてもよい。これは、２次電池の組電池装置は、一般に、低温では内部抵抗が大きくなり出力として取り出せる電力が低下するためである。そこで、例えば、外気温が低温過ぎる場合などは、加温用の流体を供給して各単位セル１１を適温にする。   Further, the fluid supply / recovery unit and the heat exchanging unit 21 may supply not only a cooling fluid but also a heating fluid in some cases. This is because an assembled battery device of a secondary battery generally has a large internal resistance at a low temperature and lowers the power that can be taken out as an output. Therefore, for example, when the outside air temperature is too low, a fluid for heating is supplied to set each unit cell 11 to an appropriate temperature.

次に、別の実施形態である組電池装置について図３を参照して説明する。図３は、別の実施形態である組電池装置の構成を示す縦断面図である。図３において、すでに説明した図中に示した構成要素と同一のものには同一符号を付してある。その部分については説明を省略する。また、横断面図の図示は、図１での図示を参照することができるので省略する。   Next, an assembled battery device according to another embodiment will be described with reference to FIG. FIG. 3 is a longitudinal sectional view showing a configuration of an assembled battery device according to another embodiment. In FIG. 3, the same reference numerals are given to the same components as those already described in the drawings. A description of this part is omitted. Further, the illustration of the cross-sectional view is omitted because the illustration in FIG. 1 can be referred to.

この組電池装置は、新たに弾性部材層３１が、熱交換部材１６と複数の単位セル１１を介して対向するように、密閉容器１４の内壁面と複数の単位セル１１それぞれのひとつの側面との間に設けられている点が、図１に示した組電池装置と異なる点である。このような弾性部材層３１を設けることで、単位セル１１と熱交換部材１６との密着性を増して熱的接続状態を向上させ（すなわち熱抵抗を下げ）、単位セル１１と熱交換部材１６との間の熱移動を円滑にしている。   In this assembled battery device, the inner wall surface of the sealed container 14 and one side surface of each of the plurality of unit cells 11 are newly arranged so that the elastic member layer 31 faces the heat exchange member 16 via the plurality of unit cells 11. 1 is different from the assembled battery device shown in FIG. By providing such an elastic member layer 31, the adhesion between the unit cell 11 and the heat exchange member 16 is increased to improve the thermal connection state (that is, the thermal resistance is lowered), and the unit cell 11 and the heat exchange member 16 are improved. Heat transfer between the two.

弾性部材層３１としては、例えば、ゴム材料層に、導熱用のアルミニウムの蒸着層を積層したものを使用できる。単位セル１１の外面どうしを互いに電気絶縁する必要がある場合には、単位セル１１の側の表面には、絶縁性の材料層をさらに積層する。弾性部材層３１が良導熱性をも有することで、単位セル１１どうしでの熱の移動がさらに円滑になるため、その温度均一化を図る効果が高まる。   As the elastic member layer 31, for example, a rubber material layer laminated with a heat-conducting aluminum vapor deposition layer can be used. When it is necessary to electrically insulate the outer surfaces of the unit cells 11 from each other, an insulating material layer is further laminated on the surface on the unit cell 11 side. Since the elastic member layer 31 also has good heat conductivity, the heat transfer between the unit cells 11 is further smoothed, so that the effect of achieving uniform temperature is enhanced.

なお、単位セル１１と熱交換部材１６との熱的接続状態をさらに向上させ熱抵抗を下げるためには、単位セル１１それぞれの側面と熱交換部材１６との間に、新たに伝熱グリースなどの良熱伝導体の層を設けると好ましい。   In order to further improve the thermal connection between the unit cell 11 and the heat exchange member 16 and reduce the thermal resistance, a new heat transfer grease or the like is provided between the side surface of each unit cell 11 and the heat exchange member 16. It is preferable to provide a good heat conductor layer.

以上、本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これらの新規な実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれるとともに、特許請求の範囲に記載された発明とその均等の範囲に含まれる。   As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

１１…単位セル、１１ｔ…単位セル端子、１２…バスバー、１３…スペーサ、１４…密閉容器、１４ａ…密閉容器ふた側、１５…断熱部材層、１５ａ…断熱部材層ふた側、１６…熱交換部材、１６ａ…熱交換部材（上側）、１６ｂ…熱交換部材（下側）、１６ｃ…流路、１６ｃａ…上側部材溝、１６ｃｂ…下側部材溝、１７ａ，１７ｂ…バッテリ端子取り出し用容器貫通部材、１８ａ，１８ｂ…バッテリ端子、１９ａ，１９ｂ…流路接続用容器貫通部材、２１…流体供給／回収部および熱交換部、２２…流体供給管、２３，２５…接続部（フランジ）、２４…流体回収管、３１…弾性部材層。   DESCRIPTION OF SYMBOLS 11 ... Unit cell, 11t ... Unit cell terminal, 12 ... Bus bar, 13 ... Spacer, 14 ... Sealed container, 14a ... Sealed container lid side, 15 ... Heat insulation member layer, 15a ... Heat insulation member layer lid side, 16 ... Heat exchange member 16a ... heat exchange member (upper side), 16b ... heat exchange member (lower side), 16c ... flow path, 16ca ... upper member groove, 16cb ... lower member groove, 17a, 17b ... container penetrating container penetrating member, 18a, 18b ... battery terminals, 19a, 19b ... flow passage connecting container penetrating members, 21 ... fluid supply / recovery part and heat exchange part, 22 ... fluid supply pipe, 23, 25 ... connection part (flange), 24 ... fluid Recovery tube, 31 ... elastic member layer.

Claims (1)

おのおのが矩形の厚板状の形状を有し、互いに背面と腹面とが、または背面どうしが、または腹面どうしが対向するようにひとつの方向に並べて配置され、かつ隣り合う単位セルが伸縮可能なばね機能を有するバスバーで電気的に導通された複数の単位セルと、
前記複数の単位セルの全体を囲う密閉容器と、
前記密閉容器の内壁面上に設けられた断熱部材層と、
前記複数の単位セルのそれぞれの位置に応じるように、熱輸送流体を供給側の端部から回収側の端部へと流すジグザグ状に配置された流路を備え、かつ前記断熱部材層と前記複数の単位セルそれぞれのひとつの側面との間に挟まれるように設けられた密構造の熱交換部材と、
前記熱交換部材と前記複数の単位セルを介して対向するように、前記密閉容器の内壁面と前記複数の単位セルそれぞれのひとつの側面との間に設けられた弾性部材層と、
前記熱交換部材の前記流路の前記供給側の端部および前記回収側の端部の両者につながるように前記密閉容器の外側に設けられた流体供給回収部と
を具備する組電池装置。 Each has a rectangular plank shape, and is arranged in one direction so that the back and abdomen, or the backs, or the abdomen face each other , and adjacent unit cells can be expanded and contracted A plurality of unit cells electrically connected by a bus bar having a spring function ;
A sealed container surrounding the whole of the plurality of unit cells;
A heat insulating member layer provided on the inner wall surface of the sealed container;
In accordance with the position of each of the plurality of unit cells, the heat insulating fluid is provided in a zigzag manner to flow the heat transport fluid from the supply side end to the recovery side end , and the heat insulating member layer and the A dense heat exchange member provided to be sandwiched between one side surface of each of the plurality of unit cells ;
An elastic member layer provided between an inner wall surface of the sealed container and one side surface of each of the plurality of unit cells so as to face the heat exchange member via the plurality of unit cells;
An assembled battery apparatus comprising: a fluid supply / recovery unit provided outside the sealed container so as to be connected to both the supply-side end and the recovery-side end of the flow path of the heat exchange member .
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