JP2009252553A - Battery pack module - Google Patents

Battery pack module Download PDF

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JP2009252553A
JP2009252553A JP2008099546A JP2008099546A JP2009252553A JP 2009252553 A JP2009252553 A JP 2009252553A JP 2008099546 A JP2008099546 A JP 2008099546A JP 2008099546 A JP2008099546 A JP 2008099546A JP 2009252553 A JP2009252553 A JP 2009252553A
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conductive sheet
contact
thermally conductive
battery module
battery
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Isao Abe
勲 阿部
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Furukawa Battery Co Ltd:The
古河電池株式会社
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack module excellent in heat radiation property and vibration resistance.
SOLUTION: Thermally conductive sheets 2a are arranged between flat cells 1 and flat cells 1 to form a laminated body of the flat cells 1. The laminated body is a battery pack module fixed by an outer package case. In each of the thermally conductive sheets 2a, its surface along the direction of the lamination of the laminated body comes into contact with the outer package case 8, while its surface along a direction orthogonal to the direction of the lamination of the laminated body comes into contact with the cell 1.
COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、扁平形単電池を組み込み、温度制御と耐震性を有する組電池モジュールに関する。 The present invention incorporates a flat-shaped battery cells, to the assembled battery module having a temperature control and shockproof.

従来、電池は、電圧や容量を上げるため、電池を直列接続や並列接続、またはそれらを組み合わせた接続をし、組電池として使われることが多い。 Conventionally, batteries, to increase the voltage and capacity, and the connection that combines series and parallel connection, or those batteries is often used as an assembled battery. 組電池方法として単電池をテープで固定したり、熱収縮チューブで固定したり、ハードケースに収納する方法が一般的である。 Or tape the unit cell as the battery pack method, or fixed with heat shrinkable tube, a method for accommodating the hard case is common. しかし、単にテープで固定したり、熱収縮チューブで固定したり、ハードケースに収納するだけでは、電池自体の発熱による熱が放熱せずに蓄積し、電池の温度が高くなってしまい、短寿命になってしまう。 However, simply or taped, or fixed by the heat shrinkable tube, is only housed in a hard case, accumulated without heat heat release by heat generation of the battery itself, will be the temperature of the battery becomes high, short-lived Become.

特に、近年は、急速充電や急速放電に手使用される場面が多く、更に電池の温度が高くなりやすく、寿命を縮める原因となっている。 In particular, in recent years, many scene being hand used to fast charging and fast discharging, tends further high temperature of the battery, are responsible shorten the life. 特に、扁平形電池の長側面同士を接するように組電池にした場合は、放熱経路が無く、中央部に位置する電池の電極の温度が非常に高くなり、端部の電池より早期に寿命に至り、結果的に組電池としての寿命が短くなってしまう。 In particular, if you assembled battery in contact long side surfaces of the flat-shaped battery, the heat radiation path is not the temperature of the cell electrodes positioned in the center portion becomes very high, the early life than the battery end lead, life as a result to the assembled battery is shortened.

このような課題を解決するため、特許文献1では、単電池間に隙間を開け、そこに冷却風を流して冷却する空冷方式が提案されている。 To solve such a problem, Patent Document 1, a gap between the unit cells, air cooling system for cooling by flowing therethrough a cooling air has been proposed. また、特許文献2では、単電池間に冷却液を循環させる水冷方式が提案されている。 In Patent Document 2, water cooling circulating coolant between the unit cells has been proposed.
特開2005−108750号公報 JP 2005-108750 JP 特開2003−346924号公報 JP 2003-346924 JP

しかしながら、これらの方式では単電池間に冷却風や冷却液を循環させるための隙間が必要になり、その分組電池モジュールの大きさが大きくなってしまう。 However, these methods require a gap for circulating cooling air or coolant between the unit cells, the size of that amount assembled battery module is increased.
また、これら方式の組電池モジュールを、電気自動車や航空機などの常に大きな衝撃が加わる移動体に使用した場合、単電池間に隙間を設けているために耐振設計が複雑になってしまい十分な耐振構造を得ることが難しい。 Further, the assembled battery module of system, very large if the impact is used in a mobile applied, sufficient vibration causes vibration design becomes complicated because of a gap is provided between the unit cells, such as electric vehicles and aircraft it is difficult to obtain a structure. 更に、殆んどの電池において、0℃以下の低温時は放電性能が悪く、−30℃以下になると殆んど容量が取り出せなくなってしまう。 Further, in any cell N 殆, 0 ° C. at low temperature below has poor discharge performance, 殆 N etc. capacity becomes to -30 ° C. or less can no longer be extracted.

本発明はこうした事情を考慮してなされたもので、従来と比べ放熱性と耐振性に優れた組電池モジュールを提供することを目的とする。 The present invention has been made in consideration of these circumstances, and an object thereof is to provide an assembled battery module having excellent heat dissipation and vibration resistance as compared with the conventional.

本発明に係る組電池モジュールは、扁平形単電池と扁平形単電池間に熱伝導性シートを配置して単電池の積層体が構成され、該積層体は外装ケースにより固定された組電池モジュールであって、前記熱伝導性シートは、前記積層体の積層方向に沿う面は外装ケースに接し、積層体の積層方向と直交する方向に沿う面は単電池に接して配置されていることを特徴とする。 Assembled battery module according to the present invention, by placing the thermally conductive sheet unit cell laminate is formed between flat-shaped unit cells and flat-shaped battery cells, the assembled battery module laminate is fixed by the outer casing a is, the thermally conductive sheet, that the surface along the lamination direction of the laminate is in contact with the outer case, the surface along the direction perpendicular to the laminating direction of the laminated body is disposed in contact with the unit cell and features.

本発明によれば、扁平形単電池が充放電で発熱し、電池温度が上昇した場合、電池の熱が熱伝導性シートから外装ケースに伝い放熱され、電池温度の上昇が抑制される。 According to the present invention, generate heat by charging and discharging flat-shaped battery cells, if the battery temperature rises, battery heat is run down radiated to the external case of a thermally conductive sheet, rise of the battery temperature can be suppressed. また、0℃以下の低温時は、外装ケースに設けた発熱体により電池を加温することで、十分な放電容量が得られる。 Further, at low temperatures of 0 ℃ or less, by heating the battery by heating element provided in the outer case, sufficient discharge capacity is obtained.
また、熱伝導性シートを両面粘着性の熱伝導性シートとすることで、扁平形単電池と隙間無く良好に接することができ放熱性が向上する。 Further, by the thermally conductive sheet and the double-sided adhesive, thermally conductive sheet, thereby improving the heat radiation property can contact without good flat-shaped battery cells and clearance. 更に、単電池同士が固定し一体構造となり、衝撃による位置ずれなどが無くなり耐振性が向上する。 Furthermore, it an integral structure unit cells to each other is fixed, such as displacement caused by the impact is eliminated vibration resistance is improved.

以下、本発明の組電池モジュールについて更に詳しく説明する。 Hereinafter will be described in more detail the assembled battery module of the present invention.
(1) 上述したように、本発明の組電池モジュールは、扁平形単電池と扁平形単電池間に熱伝導性シートを配置してなる単電池の積層体は、外装ケースにより固定された組電池モジュールであり、熱伝導性シートは、前記積層体の積層方向に沿う面は外装ケースに接し、積層体の積層方向と直交する方向に沿う面は単電池に接して配置されている。 (1) As described above, the assembled battery module of the present invention, a laminate of unit cells formed by arranging a thermally conductive sheet between flat-shaped unit cells and flat-shaped battery cells, the set that is fixed by the outer casing a battery module, the thermally conductive sheet, the surface along the lamination direction of the laminate is in contact with the outer case, the surface along the direction perpendicular to the laminating direction of the laminated body is disposed in contact with the unit cell.
ここで、熱伝導性シートは、両面に粘着性を持たせた両面粘着性熱伝導性シートにすることが好ましい。 Here, the thermally conductive sheet is preferably a double-sided adhesive thermally conductive sheet was tacky on both sides. これにより、積層体の扁平形単電池同士は隙間無く良好に接することができ放熱性が向上する。 Thus, flat-shaped battery cells to each other of the laminate is improved without gaps heat dissipation can contact the better. また、単電池同士が固定し一体構造となり、衝撃による位置ずれなどが無くなり耐振性が向上する。 Also, come together structural unit cells to each other is fixed, such as displacement caused by the impact is eliminated vibration resistance is improved.

(2) 上記モジュールにおいて、熱伝導性シートと接する外装ケースは金属製のケースであることが好ましい。 (2) In the above module, it is preferable outer casing in contact with the heat conductive sheet is a metal case. これにより単電池で生じた熱の放熱性が向上する。 Thereby improving the heat dissipation of the heat generated in the unit cell. また、前記熱伝導性シートと接する外装ケースは放熱構造であることが好ましい。 Further, it is preferable outer casing in contact with the heat conductive sheet is a heat dissipation structure. 具体的には、例えば、熱伝導性シートと接する外装ケースに放熱フィンが取り付けてある場合が挙げられる。 Specifically, for example, if the heat radiating fins in the outer casing in contact with the thermally conductive sheet is attached and the like.
また、単電池の温度が0℃以下の低温時は放電性能が悪い(急速放電ができないことがある)ことより、単電池を発熱体(ヒータ)等により加温することが好ましい。 Further, at low temperatures the temperature of 0 ℃ following unit cell than the discharge performance is poor (it may not be rapid discharge), it is preferable to heat the heating body (heater) such as unit cells. この場合、単電池の加温は、例えば、電池温度が0℃未満になったら発熱体のスイッチをONし、電池温度が0℃以上になったらスイッチをOFFするといった、ON−OFF制御を行うことが可能である。 In this case, heating of the cell, for example, turning ON the switch of the heating element If the battery temperature becomes lower than 0 ° C., such as the battery temperature is OFF switch When equal to or more than 0 ° C., performs ON-OFF control It is possible. なお、発熱体は外装ケースの所望の位置に貫通口を設け、該貫通口に挿通させたり、外装ケースの表面に当接させたりするなどして設けることが可能である。 Incidentally, the heating element is a through hole provided at a desired position of the outer case, or are inserted into the through opening, can be provided by, for example, or to contact with the surface of the outer case. また、発熱体の電源は単電池から供給することも可能である。 The power of the heating element it is also possible to supply the unit cells.

以下に、本発明の実施形態について図面を参照して説明する。 It will be described below with reference to the accompanying drawings, embodiments of the present invention. なお、本発明は以下の実施形態のみに限定されるものではない。 The present invention is not limited to the following embodiments.
(第1の実施形態) (First Embodiment)
図1及び図2を参照する。 Referring to FIGS. 図1は本実施形態に係る組電池モジュールの概略的な斜視図、図2は図1の組電池モジュールにおいて外装ケース板を取り付ける前の状態を示す説明図を示す。 Figure 1 is a schematic perspective view of the battery module according to this embodiment. FIG. 2 is an explanatory view showing a state before mounting the outer casing plate in the assembled battery module of FIG.

図中の符番1は、両面が粘着性の厚み0.5mmの両面粘着性熱伝導性シート2a,2bを介して積層された扁平形単電池(以下、単に単電池と呼ぶ)である。 Reference numeral 1 in the figure, both sides sided adhesive heat conductive sheet 2a sticky thickness 0.5 mm, flat-shaped unit cells are laminated with a 2b (hereinafter, simply referred to as a unit cell) it is. 単電池1は、正極端子3及び負極端子4を備えている。 Cells 1 is provided with a positive electrode terminal 3 and negative electrode terminal 4. 熱伝導性シート2aは単電池1と単電池1間に配置されて互いに接しており、熱電導性シート2bは単電池1と上部の厚み10mmのアルミニウム製の外装板5a,下部の厚み10mmのアルミニウム製の外装板5b間に配置されている。 Thermally conductive sheet 2a is in contact with each other are disposed between 1 cells 1 and unit cell, the thermal conductivity sheet 2b is of the single cell 1 and the upper thickness 10mm aluminum outer casing 5a, a bottom thickness 10mm It is disposed between the aluminum outer casing 5b. また、単電池1としては、長さ140mm、幅80mm、厚み10mmの定格容量10Ahのラミネートパック式リチウムイオン蓄電池を用い、その蓄電池を7個直列に接続して、24V−10Ahの組電池モジュールとした。 As the unit cell 1, length 140 mm, width 80 mm, with a lamination pack lithium-ion battery rated capacity 10Ah thickness 10 mm, to connect the battery to the seven series, the assembled battery module of 24V-10Ah did.

単電池1及び熱伝導性シート2a,2bを積層した積層体は、上部の外装板5a,下部の外装板5b及び2枚の厚さ1mmのアルミニウム製の側板6,6により囲まれている。 Cells 1 and thermally conductive sheet 2a, laminate with a 2b, the upper exterior plate 5a, surrounded by aluminum plates 6,6 of the lower exterior plate 5b and two 1mm thick of.

側板6の上下には夫々3つの長穴(固定穴)が開けられており、この固定穴を介して固定ネジ7により側板6が外装板5a,5bに固定されている。 The top and bottom of the side plate 6 and is opened each three elongated holes (fixing holes), the side plate 6 is fixed outer casing 5a, 5b, by fixing screws 7 through the fixing holes. ここで、前記熱伝導性シート2a,2bはその端部が折り曲げられて、図1及び図2に示すように、単電池1の積層体の積層方向(矢印A方向)に沿う面では側板6,6に接し、積層体の積層方向と直交する方向(矢印B方向)に沿う面では単電池1間に挟まれ、各単電池の主面に接している。 Here, the thermally conductive sheet 2a, 2b is bent its end, as shown in FIGS. 1 and 2, the side plate 6 is a plane along the stacking direction of the stack of cells 1 (the direction of arrow A) , 6 in contact, interposed between the unit cells 1 is a plane along the direction (arrow B direction) perpendicular to the stacking direction of the laminate, in contact with the main surface of each cell. なお、外装板5a,5b及び側板6,6は、所定箇所に夫々設けられた貫通口に、固定ネジ7を挿通し組み立てられて外装ケース8となっている。 The exterior plates 5a, 5b and the side plates 6, 6, the through opening provided respectively at predetermined positions, and has a outer casing 8 are assembled by inserting the fixing screw 7.

第1の実施形態に係る組電池モジュールは、扁平形単電池1と扁平形単電池1間に扁平形単電池1と扁平形単電池1間に断面形状がコ字形の両面粘着性熱伝導性シート2aを配置し、単電池1の積層体の積層方向に沿う面では側板6,6に接し、積層体の積層方向と直交する方向に沿う面では単電池1間に介在させて単電池1に接した構成となっている。 Assembled battery module according to a first embodiment, the double-sided adhesive thermally conductive sectional shape flat-shaped unit cell 1 and flat-shaped unit cells between 1 between 1 flat-shaped unit cell 1 and flat-shaped unit cells U-shaped place a sheet 2a, contact with the side plate 6,6 in terms along the stacking direction of the stack of cells 1, a plane along the direction perpendicular to the laminating direction of the laminate is interposed between the unit cells 1 cells 1 and it has a configuration in contact with.

(第2の実施形態) (Second Embodiment)
第2の実施形態に係る組電池モジュールは、図1の組電池モジュールと比べ、図3に示すように側板6に放熱フィン11を設けて、放熱構造にしていることを特徴とし、他の点は図1の場合と同様である。 Assembled battery module according to the second embodiment, compared with the assembled battery module of FIG. 1, the heat radiation fins 11 provided in the side plate 6 as shown in FIG. 3, characterized in that in the heat dissipation structure, otherwise is the same as in FIG. なお、図1,図2と同部材は同符番を付して説明を省略する。 Incidentally, FIG. 1, FIG. 2 and the member will be omitted denoted by like numerals.
このように、第2の実施形態に係る組電池モジュールは、側板6に放熱フィン11を設けて、放熱構造にした構成となっている。 Thus, the assembled battery module according to the second embodiment, the heat radiation fins 11 provided in the side plate 6 has a configuration in which the heat dissipation structure.

(第3の実施形態) (Third Embodiment)
第3の実施形態に係る組電池モジュールは、図1の組電池モジュールと比べ、図4,図5に示すように厚めの側板6に複数の放熱フィン11を設けるとともに、前記側板6に複数の発熱体12を設け、放熱構造と加温構造を備えた構成にしていることを特徴とし、他の点は図1の場合と同様である。 Assembled battery module according to a third embodiment, compared with the assembled battery module of FIG. 1, FIG. 4, provided with a plurality of heat radiation fins 11 on the thick side plates 6, as shown in FIG. 5, a plurality of the side plates 6 the heating element 12 is provided, it is configured to include a heat radiation structure and heating structure characterized by, the other points are the same as in FIG. 但し、図4は第3の実施形態に係る組電池モジュールの概略的な外観図であり、図5は同モジュールの一構成である発熱体12を説明するための図である。 However, Figure 4 is a schematic external view of the assembled battery module according to a third embodiment, FIG. 5 is a diagram for explaining the heating element 12 which is one configuration of the module. なお、図1,図2と同部材は同符番を付して説明を省略する。 Incidentally, FIG. 1, FIG. 2 and the member will be omitted denoted by like numerals.

図5に示すように、発熱体12は棒状に形成され、側板6に複数設けられた貫通口内に挿通して設けられている。 As shown in FIG. 5, the heating element 12 is formed into a rod, it is provided inserted into a through mouth provided more on the side plate 6. 前記発熱体12は、外気温が0℃以下になったときに自動でスイッチがONして単電池が加温され、もっとも温度の低い単電池温度が0℃以上となったときにスイッチをOFFするスイッチのON,OFF制御とした。 The heating element 12, the unit cell switch automatically is turned ON is warmed when the ambient temperature becomes 0 ℃ below, OFF the switch when the least temperature unit cell temperature becomes 0 ℃ higher switch ON that was the OFF control. なお、発熱体12の電源は電池から供給した。 The power of the heating element 12 is supplied from the battery.

(比較例1) (Comparative Example 1)
比較例1に係る組電池モジュールは、第1の実施形態の組電池モジュールと比べ、両面粘着性熱伝導性シートを用いることなく、厚さ10mmのアルミニウム製の外装板と発熱体をつけた側板により挟み込んで単電池を固定した構成となっている。 Side plate assembled battery module according to Comparative Example 1 as compared to the assembled battery module of the first embodiment, without using the double-sided adhesive heat conductive sheet, wearing an aluminum outer casing and the heating element having a thickness of 10mm and has a sandwiched by fixing the unit cells composed of.

[実験1] [Experiment 1]
上記第1,第2,第3の実施形態に係る単電池(単電池A,B,C)及び比較例1(単電池D)に係る単電池を、以下の充電条件及び放電条件で充放電を繰返したときの単電池の温度を測定したところ、下記表1及び図4に示す結果が得られた。 It said first, second, third single cell according to an embodiment of the (unit cells A, B, C) and Comparative Example 1 The single cell according to (single cell D), the charge and discharge under the following charging conditions and discharge conditions measurement of the temperature of the cells at the time of repeated, the results shown in table 1 and Figure 4 was obtained.
但し、図6において、図に示す単電池番号は、最上部の単電池を1とし、最下部の単電池を7とした。 However, in FIG. 6, the single cell numbers shown in the figure, and 1 unit cells of the top was 7 unit cells at the bottom. また、電池温度は、単電池の中央部の温度を、熱電対を用いて夫々測定した結果を示したものである。 The battery temperature, the temperature of the central portion of the cell, and shows the results of each measured using a thermocouple. 図中の符号aは第1の実施形態、符号bは第2の実施形態、符号cは第3の実施形態、符号dは比較例1の夫々の結果である。 Symbol a first embodiment of the figure, reference numeral b is a second embodiment, the code c is a third embodiment, reference numeral d in each of the results of Comparative Example 1.

充電条件:CC−CV 0.5CA,29.4V,0.05CA Cut−off Charging conditions: CC-CV 0.5CA, 29.4V, 0.05CA Cut-off
放電条件:CC 3.0CA,21.0V Cut−off Discharge conditions: CC 3.0CA, 21.0V Cut-off
環境温度:25℃ Ambient temperature: 25 ℃
下記表1及び図6より、本発明による組電池モジュールは、特に中央部の単電池の温度を低く抑えることができることが分かる。 From Table 1 and FIG. 6, the assembled battery module according to the present invention, it is understood that it is possible to suppress especially low temperature of the unit cell of the central portion.

表1に示すように、本発明の組電池モジュールは、特に中央部の単電池の温度を低く抑えることができた。 As shown in Table 1, the assembled battery module of the present invention could be kept particularly low temperatures of the cells in the central portion.

[実験2] [Experiment 2]
上記本発明による電池A,B,Cと比較例によるDを以下の条件で振動試験を行った後、容量試験を行い、容量変化を測定した。 After vibration test under the following conditions D according to comparative example batteries A, B, and C according to the present invention performs a capacity test was measured capacitance changes. その結果を下記表2に示す。 The results are shown in Table 2. なお、容量変化は各々の電池の初期容量を100%とした時の、試験後の容量低下率を示したものである。 The capacity change is when the initial capacity of each battery was 100%, showing the capacity fade rate after the test.

(振動条件) (Vibration conditions)
規格:MIL−STD−810 FIGURE C−8 Standard: MIL-STD-810 FIGURE C-8
パワースペクトル密度:0.077g /Hz Power spectral density: 0.077g 2 / Hz
方向:X方向,Y方向,Z方向 Direction: X direction, Y direction, Z direction
時間:各方向3時間 Time: Each direction 3 hours
(容量試験条件) (Capacity test conditions)
充電条件:CC−CV 0.5CA 29.4V 0.05CA Cut−off Charging conditions: CC-CV 0.5CA 29.4V 0.05CA Cut-off
放電条件:CC 0.5CA 21.0V Cut−off Discharge conditions: CC 0.5CA 21.0V Cut-off

[実験3] [Experiment 3]
上記本発明による単電池A,B,Cと比較例による単電池Dを以下の条件で充放電を行った。 The unit cell A according to the present invention, B, the charge and discharge under the following conditions of single cell D according to comparative example C was performed. その結果を下記表3に示す。 The results are shown in Table 3.
充電条件:CC−CV 0.5CA 29.4V 0.05CA Cut−off Charging conditions: CC-CV 0.5CA 29.4V 0.05CA Cut-off
放電条件:CC 9.0CA 15.2V Cut−off Discharge conditions: CC 9.0CA 15.2V Cut-off
環境温度:−30℃ Environmental temperature: -30 ℃
表3に示すように、環境温度が−30℃である場合、発熱体を取り付けていない本発明の単電池A,Bは放電することができなかった。 As shown in Table 3, when the ambient temperature is -30 ° C., the unit cell A of the present invention were not installed heating element, B could not be discharged. しかし、発熱体を取り付けた本発明の単電池C、比較例の単電池Dは放電可能であり、熱伝導シートを用いることにより熱を均一にすることが可能であり、放電時間を延ばすことが可能であった。 However, the unit cell C of the present invention fitted with a heating element, a single cell D of comparison example is dischargeable, it is possible to equalize the heat by using a heat conductive sheet, it is to extend the discharge time It was possible.

なお、本発明は、上記実施形態そのままに限定されるものではなく、実施段階ではその要旨を逸脱しない範囲で構成要素を変形して具体化できる。 The present invention is not limited to the above embodiments and may be embodied with the components modified without departing from the scope of the invention. また、上記実施形態に開示されている複数の構成要素の適宜な組み合せにより種々の発明を形成できる。 Further, various inventions can be formed by properly combining the structural elements disclosed in the embodiments. 例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。 For example, it is possible to delete some of the components shown in the embodiments. 更に、異なる実施形態に亘る構成要素を適宜組み合せてもよい。 Furthermore, it may be appropriately combined structural elements in different embodiments. 具体的には、上記実施形態では、単電池と単電池間に両面粘着性熱伝導性シートを配置した場合について述べたが、これに限らず、粘着性のない熱伝導性シートを配置してもよい。 Specifically, in the above embodiment, between the unit cells and single cells it has dealt with the case of disposing the double-sided adhesive thermally conductive sheet, not limited to this, by placing the thermally conductive sheet having no tack it may be.

図1は、本発明の第1の実施形態に係る組電池モジュールの概略的な斜視図である。 Figure 1 is a schematic perspective view of the battery module according to a first embodiment of the present invention. 図2は、図1の組電池モジュールにいて、外装ケース板を取り付ける前の状態を示す図である。 Figure 2 is are in the assembled battery module of FIG. 1 is a diagram showing a state before mounting the outer case plate. 図3は、本発明の第2の実施形態に係る組電池モジュールの概略的な斜視図である。 Figure 3 is a schematic perspective view of the battery module according to a second embodiment of the present invention. 図4は、本発明の第3の実施形態に係る組電池モジュールの概略的な斜視図である。 Figure 4 is a schematic perspective view of the battery module according to a third embodiment of the present invention. 図5は、図4の組電池モジュールの要部の説明図である。 Figure 5 is an explanatory view of a main part of the battery module of FIG. 図6は、本発明の第1,第2、第3の実施形態に係る単電池及び比較例1に係る単電池について充放電を繰返したときの単電池の温度を示す特性図である。 Figure 6 is a first characteristic diagram showing a second, temperature of the cells upon repeated charging and discharging the unit cell according to a single cell and Comparative Example 1 according to the third embodiment of the present invention.

符号の説明 DESCRIPTION OF SYMBOLS

1…単電池、2a,2b…両面粘着性熱伝導性シート、3…正極端子、4…負極端子、5a,5b…外装板、6…側板、7…固定ネジ、8…外装ケース、11…放熱フィン、12…発熱体。 1 ... unit cell, 2a, 2b ... double-sided adhesive heat conductive sheet, 3 ... positive terminal, 4 ... negative terminal, 5a, 5b ... exterior plate, 6 ... plate, 7 ... fixing screws, 8 ... outer case 11 ... radiation fins 12 ... heating element.

Claims (6)

  1. 扁平形単電池と扁平形単電池間に熱伝導性シートを配置して単電池の積層体が構成され、該積層体は外装ケースにより固定された組電池モジュールであって、 By placing the thermally conductive sheet between flat-shaped unit cells and flat-shaped battery cells are configured the stack of unit cells, the laminate a battery assembly module which is fixed by the outer casing,
    前記熱伝導性シートは、前記積層体の積層方向に沿う面は外装ケースに接し、積層体の積層方向と直交する方向に沿う面は単電池に接して配置されていることを特徴とする組電池モジュール。 Wherein the thermally conductive sheet is set to the surface along the lamination direction of the laminate is in contact with the outer case, the surface along the direction perpendicular to the laminating direction of the laminate is characterized by being disposed in contact with the unit cell the battery module.
  2. 熱伝導性シートは両面に粘着性を持たせた両面粘着性熱伝導性シートであることを特徴とする請求項1記載の組電池モジュール。 Assembled battery module of claim 1, wherein the thermally conductive sheet is a double-sided adhesive heat conductive sheet was tacky on both sides.
  3. 前記熱伝導性シートと接する外装ケースが金属製のケースであることを特徴とする請求項1若しくは請求項2記載の組電池モジュール。 Claim 1 or claim 2 assembled battery module, wherein the outer casing in contact with the heat conductive sheet is a metal case.
  4. 前記熱伝導性シートと接する外装ケースが放熱構造であることを特徴とする請求項1若しくは請求項2記載の組電池モジュール。 Claim 1 or claim 2 assembled battery module, wherein the outer casing in contact with the thermally conductive sheet is a heat radiation structure.
  5. 前記熱伝導性シートと接する外装ケースに発熱体が取り付けてあることを特徴とする請求項1若しくは請求項2記載の組電池モジュール。 Claim 1 or claim 2 assembled battery module wherein a that is the heating element is attached to the outer casing in contact with the heat conductive sheet.
  6. 前記外装ケースに取り付けた発熱体は、電池温度が、電池の放電特性が低下する温度以下になると発熱することを特徴とする請求項5記載の組電池モジュール。 The heating element attached to the outer case, the battery temperature, the battery pack module of claim 5, wherein the discharge characteristics of the battery, characterized in that heating to become lower than the temperature to decrease.
JP2008099546A 2008-04-07 2008-04-07 Battery pack module Pending JP2009252553A (en)

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