JP2008235099A - Battery - Google Patents

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JP2008235099A
JP2008235099A JP2007075275A JP2007075275A JP2008235099A JP 2008235099 A JP2008235099 A JP 2008235099A JP 2007075275 A JP2007075275 A JP 2007075275A JP 2007075275 A JP2007075275 A JP 2007075275A JP 2008235099 A JP2008235099 A JP 2008235099A
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electrode terminal
negative electrode
positive electrode
insulating member
terminal
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Tomoyasu Takeuchi
友康 竹内
Hiroshi Ueshima
啓史 上嶋
Ryuichiro Shinkai
竜一郎 新開
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Denso Corp
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Denso 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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  • Connection Of Batteries Or Terminals (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a battery capable of efficiently radiating heat generated from an electrode body by a simple structure. <P>SOLUTION: This battery 1 is composed of the electrode body 2, a positive electrode terminal 3, a negative electrode terminal 4, a case 5, and an insulation member 6. The positive electrode 3 and the negative electrode 4 have projecting parts 32 and 42 are elastically deformed to press the insulation member 6, respectively. The electrode body 2 with the positive electrode 3 and the negative electrode 4 connected thereto is housed in a body 50 with the insulation material 6 arranged therein. Then the projecting parts 32 and 42 are elastically deformed and press the insulation material 6 against the sidewall of the body 50. Thereby, the positive electrode 3 and the negative electrode 4 are brought into press-contact with the insulation member 6, and bring the insulation member 6 into press-contact with the body 50. Thereby, heat resistance between the positive electrode 3 and the negative electrode 4, and the insulation member 6 and between the insulation member 6 and the body part 50 can be restrained. Accordingly, heat generated from the electrode body 2 can be efficiently radiated by a simple structure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、電池容器に収容された電極体に接続される正極端子及び負極端子と、電極体を電池容器から絶縁する絶縁部材とを有する電池に関する。   The present invention relates to a battery having a positive terminal and a negative terminal connected to an electrode body accommodated in a battery container, and an insulating member for insulating the electrode body from the battery container.

近年、自動車駆動用の電源として、高出力、高エネルギー容量であるリチウム電池やニッケル電池が実用化されている。自動車駆動用として電池が使用される場合、激しい充放電が繰返されることとなる。そのため、化学反応に伴う発熱によって温度が上昇し、電池の性能が劣化してしまう可能性があった。   In recent years, lithium batteries and nickel batteries having high output and high energy capacity have been put into practical use as power sources for driving automobiles. When a battery is used for driving an automobile, intense charging / discharging is repeated. Therefore, there is a possibility that the temperature rises due to heat generated by the chemical reaction, and the performance of the battery is deteriorated.

従来、このような温度上昇を簡素な構成で抑えることができる電池が種々開示されている。また、電池と同様の構成であるコンデンサにおいても種々開示されている。その中の１つとして、例えば特開２００５−２１００７０号公報に開示されている電解コンデンサがある。この電解コンデンサは、陽極及び陰極からなるコンデンサ素子と、電極端子と、外装ケースと、熱伝導材とから構成されている。コンデンサ素子は、セパレータを介して対向させた箔状の陽極と陰極とを一体的に巻回して構成され、外装ケースに収容されている。電極端子は、一端部を外部に突出させた状態で、外装ケースの封口部材に固定されている。電極端子の他端部には、リード線を介してコンデンサ素子の陽極と陰極とがそれぞれ接続されている。金属からなる外装ケースと、コンデンサ素子との間には、絶縁性を有する熱伝導材が介装されている。コンデンサ素子で発生した熱は、熱伝導材を介して外装ケースに伝達され、外部へと放出される。
特開２００５−２１００７０号公報 Conventionally, various batteries that can suppress such a temperature rise with a simple configuration have been disclosed. Various types of capacitors having the same configuration as the battery are also disclosed. One of them is an electrolytic capacitor disclosed in, for example, Japanese Patent Application Laid-Open No. 2005-210070. This electrolytic capacitor includes a capacitor element composed of an anode and a cathode, an electrode terminal, an exterior case, and a heat conductive material. The capacitor element is configured by integrally winding a foil-like anode and a cathode facing each other with a separator interposed therebetween, and is accommodated in an outer case. The electrode terminal is fixed to the sealing member of the exterior case with one end projecting to the outside. The other end of the electrode terminal is connected to the anode and cathode of the capacitor element via lead wires. An insulating heat conductive material is interposed between the outer case made of metal and the capacitor element. The heat generated in the capacitor element is transmitted to the exterior case via the heat conducting material and released to the outside.
Japanese Patent Laid-Open No. 2005-210070

ところで、前述したように、コンデンサ素子は、箔状の陽極及び陰極から構成されおり、充分な強度がない。そのため、コンデンサ素子を、圧力を加えて熱伝導材に接触させることができない。この場合、コンデンサ素子と熱伝達材との間の熱抵抗が増加してしまう可能性がある。そのため、コンデンサ素子で発生した熱を効率よく熱伝導材に伝えることができないという問題があった。   By the way, as described above, the capacitor element is composed of a foil-like anode and cathode, and does not have sufficient strength. Therefore, the capacitor element cannot be brought into contact with the heat conducting material by applying pressure. In this case, the thermal resistance between the capacitor element and the heat transfer material may increase. For this reason, there is a problem that heat generated in the capacitor element cannot be efficiently transmitted to the heat conducting material.

本発明はこのような事情に鑑みてなされたものであり、電極体で発生した熱を、簡素な構成で効率よく放熱することができる電池を提供することを目的とする。   This invention is made | formed in view of such a situation, and it aims at providing the battery which can thermally radiate | emit efficiently the heat | fever generate | occur | produced with the electrode body with a simple structure.

課題を解決するための手段及び発明の効果Means for Solving the Problems and Effects of the Invention

そこで、本発明者は、この課題を解決すべく鋭意研究し試行錯誤を重ねた結果、正極端子及び負極端子の少なくともいずれかが、絶縁部材に加圧接触するとともに、絶縁部材を電池容器に加圧接触させることで、電極体で発生する熱を、簡素な構成で効率よく放熱できることを思いつき、本発明を完成するに至った。   Therefore, as a result of extensive research and trial and error, the present inventor has made at least one of the positive electrode terminal and the negative electrode terminal in pressure contact with the insulating member and added the insulating member to the battery container. The inventors came up with the idea that the heat generated by the electrode body can be efficiently dissipated with a simple configuration by the pressure contact, and the present invention has been completed.

すなわち、請求項１に記載の電池は、正極及び負極からなる電極体と、正極及び負極にそれぞれ接続される正極端子及び負極端子と、正極端子及び負極端子の接続された電極体を収容するとともに、正極端子及び負極端子の端部を外部に突出させた状態で支持する電池容器と、正極端子及び負極端子の接続された電極体と電池容器との間に配設される熱伝導性を有する絶縁部材とを備えた電池において、正極端子及び負極端子の少なくともいずれかは、絶縁部材に加圧接触するとともに、絶縁部材を電池容器に加圧接触させることを特徴とする。   That is, the battery according to claim 1 contains an electrode body composed of a positive electrode and a negative electrode, a positive electrode terminal and a negative electrode terminal connected to the positive electrode and the negative electrode, respectively, and an electrode body connected to the positive electrode terminal and the negative electrode terminal. A battery container that supports the positive electrode terminal and the negative electrode terminal in a state in which the ends of the positive electrode terminal and the negative electrode terminal protrude to the outside; and a thermal conductivity disposed between the electrode body to which the positive electrode terminal and the negative electrode terminal are connected and the battery container. In the battery including the insulating member, at least one of the positive electrode terminal and the negative electrode terminal is in pressure contact with the insulating member, and the insulating member is in pressure contact with the battery container.

この構成によれば、電極体は正極端子及び負極端子に接続されている。電極体で発生した熱は正極端子及び負極端子に伝わる。ところで、正極端子及び負極端子の少なくともいずれかは、熱伝導性を有する絶縁部材に加圧接触している。さらに、絶縁部材は電池容器に加圧接触している。そのため、端子と絶縁部材との間、及び、絶縁部材と電池容器との間の熱抵抗を抑えることができる。従って、正極端子及び負極端子の接続された電極体を電池容器から絶縁するとともに、電極体で発生した熱を、端子、絶縁部材及び電池容器を介して外部に効率よく放出することができる。つまり、電極体で発生した熱を、簡素な構成で効率よく放熱することができる。   According to this configuration, the electrode body is connected to the positive terminal and the negative terminal. The heat generated in the electrode body is transmitted to the positive terminal and the negative terminal. By the way, at least one of the positive electrode terminal and the negative electrode terminal is in pressure contact with an insulating member having thermal conductivity. Furthermore, the insulating member is in pressure contact with the battery container. Therefore, the thermal resistance between the terminal and the insulating member and between the insulating member and the battery container can be suppressed. Therefore, the electrode body to which the positive electrode terminal and the negative electrode terminal are connected can be insulated from the battery container, and the heat generated in the electrode body can be efficiently released to the outside through the terminal, the insulating member, and the battery container. That is, the heat generated in the electrode body can be efficiently radiated with a simple configuration.

請求項２に記載の電池は、請求項１に記載の電池において、さらに、正極端子及び負極端子の少なくともいずれかは、弾性変形して絶縁部材を押圧する弾性部を有することを特徴とする。この構成によれば、押圧部によって絶縁部材に確実に加圧接触することができる。さらに、絶縁部材を電池容器に確実に加圧接触させることができる。   The battery according to claim 2 is characterized in that, in the battery according to claim 1, at least one of the positive electrode terminal and the negative electrode terminal has an elastic portion that elastically deforms and presses the insulating member. According to this configuration, the pressing member can reliably make pressure contact with the insulating member. Furthermore, the insulating member can be reliably brought into pressure contact with the battery container.

請求項３に記載の電池は、請求項１又は２に記載の電池において、さらに、絶縁部材は、電池容器の内周面に一体的に形成された絶縁層であることを特徴とする。この構成によれば、部品点数を削減することができる。また、絶縁部材の位置ずれを抑えることができる。なお、絶縁層は、絶縁塗料を塗布して構成してもよいし、絶縁テープを貼付して構成してもよい。   The battery according to claim 3 is the battery according to claim 1 or 2, further characterized in that the insulating member is an insulating layer integrally formed on the inner peripheral surface of the battery container. According to this configuration, the number of parts can be reduced. In addition, the displacement of the insulating member can be suppressed. The insulating layer may be configured by applying an insulating paint, or may be configured by applying an insulating tape.

請求項４に記載の電池は、請求項１〜３のいずれかに記載の電池において、さらに、絶縁部材は、窒化アルミニウム、窒化ケイ素、酸化アルミニウム及びダイアモンドライクカーボンの少なくともいずれかが配合されていることを特徴とする。窒化アルミニウム、窒化ケイ素、酸化アルミニウム及びダイアモンドライクカーボンは、絶縁性及び熱伝導性に優れた材質である。そのため、これらを配合することで、絶縁部材の熱伝導性をより向上させることができる。   The battery according to claim 4 is the battery according to any one of claims 1 to 3, and the insulating member further contains at least one of aluminum nitride, silicon nitride, aluminum oxide, and diamond-like carbon. It is characterized by that. Aluminum nitride, silicon nitride, aluminum oxide and diamond-like carbon are materials excellent in insulation and thermal conductivity. Therefore, the thermal conductivity of an insulating member can be improved more by mix | blending these.

次に実施形態を挙げ、本発明をより詳しく説明する。本実施形態では、本発明に係る電池を、自動車駆動用の集合電池を構成するための単電池に適用した例を示す。   Next, an embodiment is given and this invention is demonstrated in detail. In the present embodiment, an example is shown in which the battery according to the present invention is applied to a unit cell for constituting an assembled battery for driving an automobile.

（第１実施形態）
まず、図１及び図２を参照して電池の構成について説明する。ここで、図１は、第１実施形態における電池の内部構造を示す斜視図である。なお、内部を分かりやすくするため、絶縁部材は破線で示してある。図２は、正面から見た電池の部分断面図である。 (First embodiment)
First, the configuration of the battery will be described with reference to FIGS. Here, FIG. 1 is a perspective view showing the internal structure of the battery in the first embodiment. In addition, in order to make the inside easy to understand, the insulating member is shown by a broken line. FIG. 2 is a partial cross-sectional view of the battery as viewed from the front.

図１及び図２に示すように、電池１は、電極体２と、正極端子３と、負極端子４と、ケース５（電池容器）と、絶縁部材６とから構成されている。   As shown in FIGS. 1 and 2, the battery 1 includes an electrode body 2, a positive electrode terminal 3, a negative electrode terminal 4, a case 5 (battery container), and an insulating member 6.

電極体２は、正極板２０と、負極板２１と、セパレータ（図略）とから構成されている。正極板２０は、アルミニウムからなる帯状のシートである。正極板２０の両面には、リチウムニッケル酸化物、バインダ及び導電材を含む正極活物質層が形成されている。また、幅方向の一端部側には、正極活物質層が形成されていない辺縁部２２が設けられている。負極板２１は、銅からなる帯状のシートである。負極板２１の両面には、グラファイト及びバインダを含む負極活物質層が形成されている。また、幅方向の一端部には、負極活物質層が形成されていない辺縁部２３が設けられている。セパレータは、ポリエチレンからなる微多孔性のシートである。電極体２は、セパレータを介して対向させた正極板２０と負極板２１とを一体的に巻回し、扁平形状に成形して構成されている。このとき、正極板２０の辺縁部２２は、電極体２の軸方向一端部側に突出し、突出端部２４を形成している。また、負極板２１の辺縁部２３は、電極体２の軸方向他端部側に突出し、突出端部２５を形成している。   The electrode body 2 is composed of a positive electrode plate 20, a negative electrode plate 21, and a separator (not shown). The positive electrode plate 20 is a belt-like sheet made of aluminum. A positive electrode active material layer containing lithium nickel oxide, a binder, and a conductive material is formed on both surfaces of the positive electrode plate 20. Moreover, the edge part 22 in which the positive electrode active material layer is not formed is provided in the one end part side of the width direction. The negative electrode plate 21 is a strip-shaped sheet made of copper. A negative electrode active material layer containing graphite and a binder is formed on both surfaces of the negative electrode plate 21. Moreover, the edge part 23 in which the negative electrode active material layer is not formed is provided in the one end part of the width direction. The separator is a microporous sheet made of polyethylene. The electrode body 2 is configured by integrally winding a positive electrode plate 20 and a negative electrode plate 21 that are opposed to each other with a separator interposed therebetween, and forming the electrode body 2 into a flat shape. At this time, the edge portion 22 of the positive electrode plate 20 protrudes toward the one end side in the axial direction of the electrode body 2 to form a protruding end portion 24. Further, the edge portion 23 of the negative electrode plate 21 protrudes toward the other axial end side of the electrode body 2 to form a protruding end portion 25.

正極端子３は、電極体２の正極板２０を外部に接続するためのアルミニウムからなる板状の部材である。正極端子３は、端子部３０と、接続部３１とから構成されている。端子部３０は、正極端子３を外部に接続するための矩形板状の部位である。接続部３１は、端子部３０に連結され、正極端子３を正極板２０に接続するための矩形板状の部位である。接続部３１の長手方向端部には、板厚方向に屈曲して突出し、弾性変形して絶縁部材６を押圧する突出部３２（弾性部）が形成されている。突出部３２の突出面３２０は平面状に、先端部３２１はＲ状に成形されている。正極端子３は、突出部３２を反電極体２側に突出させた状態で、接続部３１が正極板２０の突出端部２４に接続されている。   The positive electrode terminal 3 is a plate-like member made of aluminum for connecting the positive electrode plate 20 of the electrode body 2 to the outside. The positive electrode terminal 3 includes a terminal portion 30 and a connection portion 31. The terminal part 30 is a rectangular plate-shaped part for connecting the positive electrode terminal 3 to the outside. The connection portion 31 is a rectangular plate-like portion that is connected to the terminal portion 30 and connects the positive electrode terminal 3 to the positive electrode plate 20. At the end in the longitudinal direction of the connecting portion 31, a protruding portion 32 (elastic portion) that is bent and protrudes in the thickness direction and elastically deforms to press the insulating member 6 is formed. The protruding surface 320 of the protruding portion 32 is formed into a flat shape, and the tip portion 321 is formed into an R shape. In the positive electrode terminal 3, the connection portion 31 is connected to the protruding end portion 24 of the positive electrode plate 20 with the protruding portion 32 protruding toward the counter electrode body 2 side.

負極端子４は、電極体２の負極板２１を外部に接続するための銅からなる板状の部材である。負極端子４は、端子部４０と、接続部４１とから構成されている。端子部４０は、負極端子４を外部に接続するための矩形板状の部位である。接続部４１は、端子部４０に連結され、負極端子４を負極板２１に接続するための矩形板状の部位である。接続部４１の長手方向端部には、板厚方向に屈曲して突出し、弾性変形して絶縁部材６を押圧する突出部４２（弾性部）が形成されている。突出部４２の突出面４２０は平面状に、先端部４２１はＲ状に成形されている。負極端子４は、突出部４２を反電極体２側に突出させた状態で、接続部４１が負極板２１の突出端部２５に接続されている。   The negative electrode terminal 4 is a plate-like member made of copper for connecting the negative electrode plate 21 of the electrode body 2 to the outside. The negative electrode terminal 4 includes a terminal portion 40 and a connection portion 41. The terminal part 40 is a rectangular plate-shaped part for connecting the negative electrode terminal 4 to the outside. The connection portion 41 is a rectangular plate-like portion that is connected to the terminal portion 40 and connects the negative electrode terminal 4 to the negative electrode plate 21. A protruding portion 42 (elastic portion) that is bent and protrudes in the plate thickness direction and elastically deforms and presses the insulating member 6 is formed at the end in the longitudinal direction of the connecting portion 41. The protruding surface 420 of the protruding portion 42 is formed in a flat shape, and the tip portion 421 is formed in an R shape. In the negative electrode terminal 4, the connecting portion 41 is connected to the protruding end portion 25 of the negative electrode plate 21 with the protruding portion 42 protruding to the counter electrode body 2 side.

ケース５は、正極端子３及び負極端子４の接続された電極体２を収容するとともに、正極端子３及び負極端子４を支持するステンレスからなる中空直方体状の部材である。ケース５は、有底矩形筒状の本体部５０と、矩形板状の蓋部５１とから構成されている。絶縁部材６は、正極端子３及び負極端子４の接続された電極体２をケース５の本体部５０から絶縁するための熱伝導性を有する樹脂からなる有底矩形筒状の部材である。具体的には、板厚０．２ｍｍのポリエチレンからなるシート、又は、窒化アルミニウムを配合した樹脂からなるシートを成形して構成される部材である。絶縁部材６は、本体部５０の内周面に沿って配置されている。絶縁部材６の配置された本体部５０内には、正極端子３及び負極端子４の接続された電極体２が収容されている。本体部５０の開口部は蓋部５１によって封止されている。蓋部５１には、端子部３０、４０を外部に突出させた状態で、絶縁シール部材５２、５３を介して正極端子３及び負極端子４が固定されている。   The case 5 is a hollow rectangular parallelepiped member made of stainless steel that accommodates the electrode body 2 to which the positive electrode terminal 3 and the negative electrode terminal 4 are connected and supports the positive electrode terminal 3 and the negative electrode terminal 4. The case 5 includes a bottomed rectangular cylindrical main body 50 and a rectangular plate-shaped lid 51. The insulating member 6 is a bottomed rectangular cylindrical member made of a resin having thermal conductivity for insulating the electrode body 2 to which the positive electrode terminal 3 and the negative electrode terminal 4 are connected from the main body 50 of the case 5. Specifically, it is a member formed by molding a sheet made of polyethylene having a thickness of 0.2 mm or a sheet made of a resin mixed with aluminum nitride. The insulating member 6 is disposed along the inner peripheral surface of the main body 50. The electrode body 2 to which the positive electrode terminal 3 and the negative electrode terminal 4 are connected is accommodated in the main body 50 where the insulating member 6 is disposed. The opening of the main body 50 is sealed with a lid 51. The positive electrode terminal 3 and the negative electrode terminal 4 are fixed to the lid portion 51 via insulating seal members 52 and 53 with the terminal portions 30 and 40 protruding outward.

ここで、前述したように、正極端子３及び負極端子４には、弾性を有する突出部３２、４２が形成されている。そのため、正極端子３及び負極端子４の接続された電極体２が、絶縁部材６の配置された本体部５０内に収容されると、突出部３２、４２が弾性変形して絶縁部材６を本体部５０の側壁部に押圧することとなる。これにより、正極端子３及び負極端子４が、絶縁部材６に加圧接触するとともに、絶縁部材６を本体部５０に加圧接触させる。   Here, as described above, the positive terminal 3 and the negative terminal 4 are formed with protruding portions 32 and 42 having elasticity. Therefore, when the electrode body 2 to which the positive electrode terminal 3 and the negative electrode terminal 4 are connected is accommodated in the main body 50 in which the insulating member 6 is disposed, the projecting portions 32 and 42 are elastically deformed, and the insulating member 6 is The side wall portion of the portion 50 is pressed. As a result, the positive electrode terminal 3 and the negative electrode terminal 4 are brought into pressure contact with the insulating member 6 and are brought into pressure contact with the main body 50.

次に、図４を参照して効果について説明する。ここで、図４は、電池によって構成される集合電池の斜視図である。   Next, effects will be described with reference to FIG. Here, FIG. 4 is a perspective view of an assembled battery composed of batteries.

図４に示すように、集合電池７は、本体部５０の幅広面を互いに隣接させた状態で、電池１を前後方向に積層して構成されている。また、電池１は互いに直列接続（図略）されている。このように構成された集合電池７に、３０Ａの電流で１０秒毎に充放電を繰返すとともに、本体部５０の幅狭面を３０℃の空気で冷却し、隣接する幅広面の飽和温度を測定した。また、比較例として、正極端子及び負極端子が、絶縁部材に加圧接触しない電池からなる集合電池についても同様に飽和温度を測定した。   As shown in FIG. 4, the assembled battery 7 is configured by stacking the batteries 1 in the front-rear direction with the wide surfaces of the main body 50 being adjacent to each other. The batteries 1 are connected in series (not shown). The assembled battery 7 thus configured is repeatedly charged and discharged at a current of 30 A every 10 seconds, and the narrow surface of the main body 50 is cooled with 30 ° C. air, and the saturation temperature of the adjacent wide surface is measured. did. Further, as a comparative example, the saturation temperature was measured in the same manner for an assembled battery composed of batteries in which the positive electrode terminal and the negative electrode terminal were not in pressure contact with the insulating member.

Figure 2008235099
Figure 2008235099

表１に示すように、比較例の飽和温度が５３℃あったのに対し、ポリエチレン製のシールからなる絶縁部材を用いた場合は４９℃、窒化アルミニウムを配合した樹脂製のシートからなる絶縁部材を用いた場合４７℃であった。   As shown in Table 1, the saturation temperature of the comparative example was 53 ° C., whereas when an insulating member made of a polyethylene seal was used, the insulating member was made of a resin sheet blended with aluminum nitride at 49 ° C. The temperature was 47 ° C.

第１実施形態によれば、電極体２は正極端子３及び負極端子４に接続されている。電極体２で発生した熱は、正極端子３及び負極端子４に伝わる。ところで、正極端子３及び負極端子４は、熱伝導性を有する絶縁部材６に加圧接触している。さらに、絶縁部材６はケース５に加圧接触している。そのため、正極端子３及び負極端子４と絶縁部材６との間、及び、絶縁部材６とケース５との間の熱抵抗を抑えることができる。従って、表１に示すように、電極体２で発生した熱を、外部に効率よく放出することができる。つまり、電極体２で発生した熱を、簡素な構成で効率よく放熱することができる。   According to the first embodiment, the electrode body 2 is connected to the positive terminal 3 and the negative terminal 4. The heat generated in the electrode body 2 is transmitted to the positive electrode terminal 3 and the negative electrode terminal 4. By the way, the positive electrode terminal 3 and the negative electrode terminal 4 are in pressure contact with the insulating member 6 having thermal conductivity. Furthermore, the insulating member 6 is in pressure contact with the case 5. Therefore, the thermal resistance between the positive electrode terminal 3 and the negative electrode terminal 4 and the insulating member 6 and between the insulating member 6 and the case 5 can be suppressed. Therefore, as shown in Table 1, the heat generated in the electrode body 2 can be efficiently released to the outside. That is, the heat generated in the electrode body 2 can be efficiently radiated with a simple configuration.

また、第１実施形態によれば、正極端子３及び負極端子４は、弾性変形して絶縁部材６を押圧する突出部３２、４２を備えている。そのため、この突出部３２、４２によって、絶縁部材６に確実に加圧接触することができる。さらに、絶縁部材６をケース５に確実に加圧接触させることができる。   Further, according to the first embodiment, the positive electrode terminal 3 and the negative electrode terminal 4 include the protruding portions 32 and 42 that elastically deform and press the insulating member 6. Therefore, the projecting portions 32 and 42 can reliably make pressure contact with the insulating member 6. Furthermore, the insulating member 6 can be reliably brought into pressure contact with the case 5.

さらに、第１実施形態によれば、絶縁部材６を構成する樹脂からなるシートに窒化アルミニウムが配合されている。そのため、表１に示すように、配合されていない場合に比べ、絶縁部材６の熱伝導性をより向上させることができる。   Furthermore, according to 1st Embodiment, the aluminum nitride is mix | blended with the sheet | seat which consists of resin which comprises the insulating member 6. FIG. Therefore, as shown in Table 1, compared with the case where it is not mix | blended, the thermal conductivity of the insulating member 6 can be improved more.

（第２実施形態）
次に、第２実施形態の電池について説明する。第２実施形態の電池は、第１実施形態の電池に対して、端子及びケースの形状を変更したものである。 (Second Embodiment)
Next, the battery according to the second embodiment will be described. The battery of 2nd Embodiment changes the shape of a terminal and a case with respect to the battery of 1st Embodiment.

まず、図４を参照して端子及びケースの形状について説明する。ここで、図４は、第２実施形態における正面から見た電池の部分断面図である。ここでは、第１実施形態の電池との相違部分である端子及びケースの形状についてのみ説明し、共通する部分については必要とされる箇所以外説明を省略する。なお、前述した実施形態と同一の要素には同一の符号を付して説明する。   First, the shape of the terminal and the case will be described with reference to FIG. Here, FIG. 4 is a partial cross-sectional view of the battery as viewed from the front in the second embodiment. Here, only the shape of the terminal and the case, which are different from the battery of the first embodiment, will be described, and the description of the common parts other than the necessary parts will be omitted. In addition, the same code | symbol is attached | subjected and demonstrated to the element same as embodiment mentioned above.

図４に示すように、電池８は、電極体２と、正極端子９と、負極端子１０と、ケース１１（電池容器）と、絶縁部材１２とから構成されている。   As shown in FIG. 4, the battery 8 includes an electrode body 2, a positive electrode terminal 9, a negative electrode terminal 10, a case 11 (battery container), and an insulating member 12.

正極端子９は、端子部９０と、接続部９１とから構成されている。接続部９１は、端子部９０に連結され、正極端子９を正極板２０に接続するための矩形板状の部位である。接続部９１の長手方向中央部には、板厚方向に屈曲して突出し、弾性変形して絶縁部材１２を押圧する突出部９２（弾性部）が形成されている。突出部９２は、平面状の平坦部９２０と、平坦部９２０の上方及び下方に延在する平面状の傾斜部９２１、９２２とから構成されている。正極端子９は、突出部９２を反電極体２側に突出させた状態で、接続部９１が正極板２０の突出端部２４に接続されている。   The positive electrode terminal 9 includes a terminal portion 90 and a connection portion 91. The connecting portion 91 is a rectangular plate-like portion that is connected to the terminal portion 90 and connects the positive terminal 9 to the positive plate 20. A protruding portion 92 (elastic portion) that is bent and protrudes in the plate thickness direction and elastically deforms and presses the insulating member 12 is formed at the center in the longitudinal direction of the connecting portion 91. The projecting portion 92 includes a planar flat portion 920 and planar inclined portions 921 and 922 extending above and below the flat portion 920. In the positive electrode terminal 9, the connecting portion 91 is connected to the protruding end 24 of the positive electrode plate 20 with the protruding portion 92 protruding to the counter electrode body 2 side.

負極端子１０は、端子部１００と、接続部１０１とから構成されている。接続部１０１は、端子部１００に連結され、負極端子１０を負極板２１に接続するための矩形板状の部位である。接続部１０１の長手方向中央部には、板厚方向に屈曲して突出し、弾性変形して絶縁部材１２を押圧する突出部１０２（弾性部）が形成されている。突出部１０２は、平面状の平坦部１０２０と、平坦部１０２０の上方及び下方に延在する平面状の傾斜部１０２１、１０２２とから構成されている。負極端子１０は、突出部１０２を反電極体２側に突出させた状態で、接続部１０１が負極板２１の突出端部２５に接続されている。   The negative electrode terminal 10 includes a terminal part 100 and a connection part 101. The connection portion 101 is a rectangular plate-like portion that is connected to the terminal portion 100 and connects the negative electrode terminal 10 to the negative electrode plate 21. A protruding portion 102 (elastic portion) that is bent and protrudes in the plate thickness direction and elastically deforms and presses the insulating member 12 is formed at the center in the longitudinal direction of the connecting portion 101. The protruding portion 102 includes a planar flat portion 1020 and planar inclined portions 1021 and 1022 extending above and below the flat portion 1020. In the negative electrode terminal 10, the connecting portion 101 is connected to the protruding end portion 25 of the negative electrode plate 21 with the protruding portion 102 protruding toward the counter electrode body 2 side.

ケース１１は、有底矩形筒状の本体部１１０と、矩形板状の蓋部１１１とから構成されている。本体部１１０の側壁部には、傾斜部１１０１、１１０２によって構成される段差部１１０３、１１０４が形成されている。絶縁部材１２は、本体部１１０の内周面に沿って配置されている。絶縁部材１２の配置された本体部１１０内には、正極端子９及び負極端子１０の接続された電極体２が収容されている。   The case 11 includes a bottomed rectangular cylindrical main body 110 and a rectangular plate-shaped lid 111. On the side wall portion of the main body portion 110, step portions 1103 and 1104 constituted by inclined portions 1101 and 1102 are formed. The insulating member 12 is disposed along the inner peripheral surface of the main body 110. The electrode body 2 to which the positive electrode terminal 9 and the negative electrode terminal 10 are connected is accommodated in the main body 110 where the insulating member 12 is disposed.

ここで、前述したように、正極端子９及び負極端子１０には、弾性を有する突出部９２、１０２が形成されている。そのため、正極端子９及び負極端子１０の接続された電極体２が、絶縁部材１２の配置された本体部１１０内に収容されると、突出部９２、１０２が弾性変形して、傾斜部９２２、１０２２が、絶縁部材１２を本体部１１０の傾斜部１１０１、１１０２に押圧することとなる。これにより、正極端子９及び負極端子１０が、絶縁部材１２に加圧接触するとともに、絶縁部材１２を本体部１１０に加圧接触させる。   Here, as described above, the positive electrode terminal 9 and the negative electrode terminal 10 are formed with protruding portions 92 and 102 having elasticity. Therefore, when the electrode body 2 to which the positive electrode terminal 9 and the negative electrode terminal 10 are connected is accommodated in the main body 110 where the insulating member 12 is disposed, the protruding portions 92 and 102 are elastically deformed, and the inclined portion 922, 1022 presses the insulating member 12 against the inclined portions 1101 and 1102 of the main body 110. As a result, the positive electrode terminal 9 and the negative electrode terminal 10 are brought into pressure contact with the insulating member 12 and are brought into pressure contact with the main body 110.

次に、効果について説明する。第２実施形態においても、第１実施形態と同様の効果を得ることができる。   Next, the effect will be described. Also in the second embodiment, the same effect as in the first embodiment can be obtained.

なお、本実施形態では、絶縁部材がシートを成形して構成されている例を挙げているが、これに限られるものではない。絶縁部材は、ケースの内周面に一体的に形成される絶縁層であってもよい。絶縁層は、例えば、絶縁塗料を塗布して構成してもよいし、絶縁テープを貼付して構成してもよい。この場合、部品点数を削減することができる。また、絶縁部材の位置ずれを抑えることができる。   In the present embodiment, an example in which the insulating member is formed by molding a sheet is described, but the present invention is not limited to this. The insulating member may be an insulating layer integrally formed on the inner peripheral surface of the case. For example, the insulating layer may be configured by applying an insulating paint, or may be configured by applying an insulating tape. In this case, the number of parts can be reduced. In addition, the displacement of the insulating member can be suppressed.

また、本実施形態では、絶縁部材に窒化アルミニウムが配合されている例を挙げているが、これに限られるものではない。窒化アルミニウムと同様に、絶縁性及び熱伝導性の優れた窒化ケイ素、酸化アルミニウム及びダイアモンドライクカーボンの少なくともいずれかが配合されていてもよい。   In the present embodiment, an example in which aluminum nitride is blended in the insulating member is given, but the present invention is not limited to this. Similar to aluminum nitride, at least one of silicon nitride, aluminum oxide, and diamond-like carbon having excellent insulating properties and thermal conductivity may be blended.

第１実施形態における電池の内部構造を示す斜視図である。It is a perspective view which shows the internal structure of the battery in 1st Embodiment. 正面から見た電池の部分断面図である。It is the fragmentary sectional view of the battery seen from the front. 電池によって構成される集合電池の斜視図である。It is a perspective view of the assembled battery comprised with a battery. 第２実施形態における正面から見た電池の部分断面図である。It is a fragmentary sectional view of the battery seen from the front in a 2nd embodiment.

符号の説明Explanation of symbols

１、８・・・電池、２・・・電極体、２０・・・正極板、２１・・・負極板、２２、２３・・・辺縁部、２４、２５・・・突出端部、３、９・・・正極端子、３０、９０・・・端子部、３１、９１・・・接続部、３２、９２・・・突出部（弾性部）、３２０・・・突出面、３２１・・・先端部、９２０・・・平坦部、９２１、９２２・・・傾斜部、４、１０・・・負極端子、４０、１００・・・端子部、４１、１０１・・・接続部、４２、１０２・・・突出部（弾性部）、４２０・・・突出面、４２１・・・先端部、１０２０・・・平坦部、１０２１、１０２２・・・傾斜部、５、１１・・・ケース（電池容器）、５０、１１０・・・本体部、５１、１１１・・・蓋部、５２、５３・・・絶縁シール部材、１１０１、１１０２・・・傾斜部、１１０３、１１０４・・・段差部、６、１２・・・絶縁部材、７・・・集合電池 DESCRIPTION OF SYMBOLS 1, 8 ... Battery, 2 ... Electrode body, 20 ... Positive electrode plate, 21 ... Negative electrode plate, 22, 23 ... Edge part, 24, 25 ... Projection edge part, 3 , 9 ... Positive terminal, 30, 90 ... Terminal part, 31, 91 ... Connection part, 32, 92 ... Projection part (elastic part), 320 ... Projection surface, 321 ... Tip portion, 920... Flat portion, 921, 922... Inclined portion, 4, 10... Negative electrode terminal, 40, 100... Terminal portion, 41, 101. ..Protruding part (elastic part), 420 ... protruding surface, 421 ... tip part, 1020 ... flat part, 1021, 1022 ... inclined part, 5, 11 ... case (battery container) , 50, 110 ... body part, 51, 111 ... lid part, 52, 53 ... insulating seal member, 1101, 1102 ... inclined part, 103,1104 ... stepped portion, 6, 12 ... insulating member, 7 ... battery assembly

Claims (4)

正極及び負極からなる電極体と、前記正極及び前記負極にそれぞれ接続される正極端子及び負極端子と、前記正極端子及び前記負極端子の接続された前記電極体を収容するとともに、前記正極端子及び前記負極端子の端部を外部に突出させた状態で支持する電池容器と、前記正極端子及び前記負極端子の接続された前記電極体と前記電池容器との間に配設される熱伝導性を有する絶縁部材とを備えた電池において、
前記正極端子及び前記負極端子の少なくともいずれかは、前記絶縁部材に加圧接触するとともに、前記絶縁部材を前記電池容器に加圧接触させることを特徴とする電池。 An electrode body composed of a positive electrode and a negative electrode, a positive electrode terminal and a negative electrode terminal connected to the positive electrode and the negative electrode, respectively, and the electrode body connected to the positive electrode terminal and the negative electrode terminal, and the positive electrode terminal and the A battery container that supports the negative electrode terminal in a state where the end of the negative electrode terminal protrudes to the outside, and has thermal conductivity disposed between the positive electrode terminal and the electrode body connected to the negative electrode terminal and the battery container. In a battery comprising an insulating member,
At least one of the positive electrode terminal and the negative electrode terminal is in pressure contact with the insulating member, and the insulating member is in pressure contact with the battery container. 前記正極端子及び前記負極端子の少なくともいずれかは、弾性変形して前記絶縁部材を押圧する弾性部を有することを特徴とする請求項１に記載の電池。   2. The battery according to claim 1, wherein at least one of the positive electrode terminal and the negative electrode terminal includes an elastic portion that elastically deforms and presses the insulating member. 前記絶縁部材は、前記電池容器の内周面に一体的に形成された絶縁層であることを特徴とする請求項１又は２に記載の電池。   The battery according to claim 1, wherein the insulating member is an insulating layer integrally formed on an inner peripheral surface of the battery container. 前記絶縁部材は、窒化アルミニウム、窒化ケイ素、酸化アルミニウム及びダイアモンドライクカーボンの少なくともいずれかが配合されていることを特徴とする請求項１〜３のいずれかに記載の電池。   The battery according to claim 1, wherein the insulating member contains at least one of aluminum nitride, silicon nitride, aluminum oxide, and diamond-like carbon.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012186114A (en) * 2011-03-08 2012-09-27 Hitachi Vehicle Energy Ltd Secondary battery and secondary battery module
JP2013058368A (en) * 2011-09-08 2013-03-28 Toyota Motor Corp Secondary battery
JP2013206831A (en) * 2012-03-29 2013-10-07 Toyota Industries Corp Power storage device
US20130295430A1 (en) * 2010-09-03 2013-11-07 Mitsubishi Heavy Industries, Ltd. Battery
KR20160044322A (en) * 2014-10-15 2016-04-25 에스케이이노베이션 주식회사 Jelly roll for use in a secondary battery
US9911962B2 (en) 2013-12-18 2018-03-06 Samsung Sdi Co, Ltd. Secondary battery

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273631A (en) * 1998-03-24 1999-10-08 Sanyo Electric Co Ltd Alkaline secondary battery and its manufacture
JP2000150306A (en) * 1998-11-12 2000-05-30 Toyota Motor Corp Current collecting system of battery or capacitor
JP2005210070A (en) * 2003-10-29 2005-08-04 Showa Denko Kk Electrolytic capacitor
JP2006508518A (en) * 2002-11-29 2006-03-09 ナイラー インターナショナル アーベー Bipolar battery and manufacturing method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11273631A (en) * 1998-03-24 1999-10-08 Sanyo Electric Co Ltd Alkaline secondary battery and its manufacture
JP2000150306A (en) * 1998-11-12 2000-05-30 Toyota Motor Corp Current collecting system of battery or capacitor
JP2006508518A (en) * 2002-11-29 2006-03-09 ナイラー インターナショナル アーベー Bipolar battery and manufacturing method thereof
JP2005210070A (en) * 2003-10-29 2005-08-04 Showa Denko Kk Electrolytic capacitor

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130295430A1 (en) * 2010-09-03 2013-11-07 Mitsubishi Heavy Industries, Ltd. Battery
JP2012186114A (en) * 2011-03-08 2012-09-27 Hitachi Vehicle Energy Ltd Secondary battery and secondary battery module
JP2013058368A (en) * 2011-09-08 2013-03-28 Toyota Motor Corp Secondary battery
JP2013206831A (en) * 2012-03-29 2013-10-07 Toyota Industries Corp Power storage device
US9911962B2 (en) 2013-12-18 2018-03-06 Samsung Sdi Co, Ltd. Secondary battery
KR20160044322A (en) * 2014-10-15 2016-04-25 에스케이이노베이션 주식회사 Jelly roll for use in a secondary battery
KR102238623B1 (en) * 2014-10-15 2021-04-08 에스케이이노베이션 주식회사 Jelly roll for use in a secondary battery

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