JP5760713B2 - Battery pack - Google Patents

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JP5760713B2
JP5760713B2 JP2011125438A JP2011125438A JP5760713B2 JP 5760713 B2 JP5760713 B2 JP 5760713B2 JP 2011125438 A JP2011125438 A JP 2011125438A JP 2011125438 A JP2011125438 A JP 2011125438A JP 5760713 B2 JP5760713 B2 JP 5760713B2
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extinguishing agent
upper limit
limit temperature
inner container
battery pack
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JP2012252909A (en
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浩二 高畑
浩二 高畑
三橋　利彦
利彦 三橋
井上　薫
薫 井上
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Toyota Motor 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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  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Description

この発明は、自動車等に搭載され、複数の単電池と消火剤を同一の筐体に収容して構成される電池パックに関する。   The present invention relates to a battery pack that is mounted on an automobile or the like and is configured by housing a plurality of single cells and a fire extinguishing agent in the same casing.

従来、この種の技術として、例えば、下記の特許文献１に記載される電池装置が知られている。この電池装置は、複数の電池群と消化剤とを、同一の筐体内に収容して構成される。筐体内において、複数の電池群は横並びに配置され、消火剤は、横並びの複数の電池群の片端に配置される。   Conventionally, as this type of technology, for example, a battery device described in Patent Document 1 below is known. This battery device is configured by housing a plurality of battery groups and digestive agents in the same casing. In the housing, the plurality of battery groups are arranged side by side, and the fire extinguishing agent is arranged at one end of the plurality of battery groups arranged side by side.

特開平１０−２４７５２７号公報Japanese Patent Laid-Open No. 10-247527

ところが、特許文献１に記載の電池装置では、消火剤が、横並びの複数の電池群の片端に配置されるだけなので、消火剤が全ての電池群に隣接していない。このため、複数の電池群の何れかが上限温度以上に発熱したとき、その電池群に対して消火剤を有効に機能させることができない懸念があった。特に、電池装置が大きく傾いたり、横転したり、反転したりして姿勢が大きく変わった場合に、消火剤を複数の電池群に対して有効に機能させられなくなるおそれがあった。   However, in the battery device described in Patent Document 1, the extinguishing agent is only disposed at one end of a plurality of side-by-side battery groups, and thus the extinguishing agent is not adjacent to all the battery groups. For this reason, when any one of the plurality of battery groups generates heat above the upper limit temperature, there is a concern that the fire extinguishing agent cannot function effectively for the battery group. In particular, when the battery device is largely tilted, rolls over, or flips and its posture changes greatly, there is a risk that the fire extinguishing agent cannot function effectively for a plurality of battery groups.

この発明は上記事情に鑑みてなされたものであって、その目的は、どのような姿勢になっても複数の単電池それぞれの上限温度以上の発熱に対処することを可能とした電池パックを提供することにある。   The present invention has been made in view of the above circumstances, and an object thereof is to provide a battery pack that can cope with heat generation above the upper limit temperature of each of a plurality of unit cells regardless of the posture. There is to do.

上記目的を達成するために、請求項１に記載の発明は、複数の単電池と消火剤を同一の外筐体に収容して構成される電池パックであって、外筐体の中において、複数の単電池を複数の内筐体に分けて収容すると共に、消火剤を内容器に収容し、単電池が上限温度以上に発熱したときに、その上限温度以上に発熱した単電池を収容した内筐体の中へ消火剤を投入するための消火剤投入手段を設け、前記消火剤投入手段は、前記内容器の中において前記消火剤を圧縮する圧縮ガスと、前記内容器から前記内筐体の中へ前記消火剤を注入する注入管と、前記注入管の先端に塞ぐ栓とを含み、前記単電池が前記上限温度以上に発熱したときに、前記栓は熱により溶けて破れることにより、前記注入管は開くように構成されることを趣旨とする。 To achieve the above object, the invention described in claim 1 is a battery pack configured by housing a plurality of single cells and a fire extinguishing agent in the same outer casing, and in the outer casing, A plurality of unit cells are housed separately in a plurality of inner casings, and a fire extinguisher is housed in the inner container, and when a unit cell generates heat above the upper limit temperature, a unit cell that generates heat above the upper limit temperature is stored. Fire extinguishing agent charging means for supplying a fire extinguishing agent into the inner casing is provided , and the extinguishing agent charging means includes a compressed gas for compressing the extinguishing agent in the inner container, and the inner casing from the inner casing. An injection tube for injecting the extinguishing agent into the body, and a plug plugged at the tip of the injection tube, and when the unit cell generates heat above the upper limit temperature, the plug is melted by heat and broken The injection tube is configured to open .

上記発明の構成によれば、同一の外筐体の中において、複数の単電池が複数の内筐体に分けて収容されると共に、消火剤が内容器に収容されるので、複数の単電池と消火剤が外筐体の中で分離される。また、単電池が上限温度以上に発熱したときには、消火剤投入手段により、上限温度以上に発熱した単電池を収容した内筐体の中へ内容器から消火剤が投入されるので、電池パックの姿勢にかかわらず、上限温度以上に発熱した単電池に消火剤が付与される。   According to the configuration of the above invention, in the same outer casing, the plurality of single cells are separately accommodated in the plurality of inner casings, and the fire extinguishing agent is accommodated in the inner container. And fire extinguisher are separated in the outer casing. Further, when the unit cell generates heat above the upper limit temperature, the extinguishing agent is inserted from the inner container into the inner casing containing the unit cell that has generated heat above the upper limit temperature by the extinguishing agent charging means. Regardless of the posture, a fire extinguisher is applied to the unit cell that generates heat above the upper limit temperature.

上記目的を達成するために、請求項２に記載の発明は、複数の単電池と消火剤を同一の外筐体に収容して構成される電池パックであって、前記外筐体の中において、前記複数の単電池を複数の内筐体に分けて収容すると共に、前記消火剤を内容器に収容し、前記単電池が上限温度以上に発熱したときに、前記上限温度以上に発熱した単電池を収容した前記内筐体の中へ前記消火剤を投入するための消火剤投入手段を設け、前記消火剤投入手段は、前記内容器が圧縮変形可能に構成されることと、前記内容器から前記内筐体の中へ前記消火剤を注入する注入管と、前記注入管の先端に塞ぐ栓と、前記内容器を圧縮変形させる圧縮部材とを含み、前記単電池が上限温度以上に発熱したときに、前記栓は熱により溶けて破れることにより、前記注入管は開くように構成されることを趣旨とする。 In order to achieve the above object, the invention according to claim 2 is a battery pack configured by housing a plurality of single cells and a fire extinguishing agent in the same outer casing, The plurality of unit cells are separately housed in a plurality of inner housings, and the fire extinguishing agent is housed in an inner container. When the unit cells generate heat above the upper limit temperature, the unit that generates heat above the upper limit temperature is stored. A fire-extinguishing agent charging means for charging the fire-extinguishing agent into the inner housing containing the battery, wherein the fire-extinguishing agent charging means is configured such that the inner container is compressible and deformable; An injection pipe for injecting the fire extinguishing agent into the inner casing, a plug closing the tip of the injection pipe, and a compression member for compressing and deforming the inner container, and the unit cell generates heat above the upper limit temperature. When the plug is melted and broken by heat, the injection And the spirit that is configured to open.

上記発明の構成によれば、請求項１に記載の発明の作用に加え、内筐体に収容された単電池が上限温度以上に発熱したとき、その内筐体に対応する注入管が開く。このとき、内容器の中では、消火剤が圧縮ガスにより圧縮されているので、圧縮された消火剤が開いた注入管から内筐体の中へ積極的に注入される。   According to the configuration of the above invention, in addition to the operation of the invention described in claim 1, when the unit cell accommodated in the inner casing generates heat above the upper limit temperature, the injection tube corresponding to the inner casing is opened. At this time, since the extinguishing agent is compressed by the compressed gas in the inner container, the compressed extinguishing agent is positively injected into the inner casing through the opened injection pipe.

上記発明の構成によれば、請求項１に記載の発明の作用に加え、内筐体に収容された単電池が上限温度以上に発熱したとき、その内筐体に対応する注入管が開く。このとき、内容器が圧縮部材により圧縮変形され、その内容器の中で消火剤が圧縮されているので、圧縮された消火剤が開いた注入管から内筐体の中へ積極的に注入される。   According to the configuration of the above invention, in addition to the operation of the invention described in claim 1, when the unit cell accommodated in the inner casing generates heat above the upper limit temperature, the injection tube corresponding to the inner casing is opened. At this time, since the inner container is compressed and deformed by the compression member and the extinguishing agent is compressed in the inner container, the compressed extinguishing agent is actively injected into the inner casing from the opened injection pipe. The

請求項１乃至３の何れかに記載の発明によれば、電池パックがどのような姿勢になっても複数の単電池それぞれの上限温度以上の発熱に対処することができる。   According to the invention described in any one of the first to third aspects, it is possible to cope with heat generation that is equal to or higher than the upper limit temperature of each of the plurality of single cells regardless of the posture of the battery pack.

第１実施形態に係り、電池パックの概略構成を示す断面図。Sectional drawing which concerns on 1st Embodiment and shows schematic structure of a battery pack. 同実施形態に係り、ノズルの先端部分を拡大して示す断面図。Sectional drawing which concerns on the same embodiment and expands and shows the front-end | tip part of a nozzle. 同実施形態に係り、（ａ）は水平状態の自動車を示す概念図、（ｂ）はそれに搭載された水平状態の電池パックを示す断面図。(A) is a conceptual diagram which shows the motor vehicle of a horizontal state according to the embodiment, (b) is sectional drawing which shows the battery pack of the horizontal state mounted in it. 同実施形態に係り、（ａ）は傾斜状態の自動車を示す概念図、（ｂ）はそれに搭載された傾斜状態の電池パックを示す断面図。(A) is a conceptual diagram which shows the motor vehicle of an inclination state, (b) is sectional drawing which shows the battery pack of the inclination state mounted in it, concerning the embodiment. 同実施形態に係り、（ａ）は横転状態の自動車を示す概念図、（ｂ）はそれに搭載された横転状態の電池パックを示す断面図。(A) is a conceptual diagram which shows the vehicle of a rollover state, (b) is sectional drawing which shows the battery pack of the rollover state mounted in it concerning the embodiment. 同実施形態に係り、（ａ）は反転状態の自動車を示す概念図、（ｂ）はそれに搭載された反転状態の電池パックを示す断面図。(A) is a conceptual diagram which shows the motor vehicle of the inversion state concerning this embodiment, (b) is sectional drawing which shows the battery pack of the inversion state mounted in it. 第２実施形態に係り、電池パックの概略構成を示す断面図。Sectional drawing which concerns on 2nd Embodiment and shows schematic structure of a battery pack. 第３実施形態に係り、電池パックの概略構成を示す断面図。Sectional drawing which concerns on 3rd Embodiment and shows schematic structure of a battery pack.

＜第１実施形態＞
以下、本発明における電池パックを具体化した第１実施形態につき図面を参照して詳細に説明する。 <First Embodiment>
Hereinafter, a first embodiment of a battery pack according to the present invention will be described in detail with reference to the drawings.

図１に、この実施形態の電池パック１の概略構成を断面図により示す。この電池パック１は、複数の単電池１１と、各単電池１１の上限温度以上の発熱を抑える消火剤１２とを同一の外筐体１３の中に収容して構成される。この電池パック１は、電源として電気自動車等に搭載される。   FIG. 1 is a sectional view showing a schematic configuration of a battery pack 1 of this embodiment. The battery pack 1 is configured by housing a plurality of unit cells 11 and a fire extinguishing agent 12 that suppresses heat generation above the upper limit temperature of each unit cell 11 in the same outer casing 13. The battery pack 1 is mounted on an electric vehicle or the like as a power source.

より詳しくは、複数の単電池１１は、外筐体１３の中において、複数の内筐体１４に分けて収容される。消火剤１２は、外筐体１３の中において、内容器１５に収容される。内容器１５は、外筐体１３と複数の内筐体１４との間に配置される。各内筐体１４の上壁には、通気孔１４ａが形成される。   More specifically, the plurality of single cells 11 are accommodated in the outer casing 13 by being divided into a plurality of inner casings 14. The extinguishing agent 12 is accommodated in the inner container 15 in the outer casing 13. The inner container 15 is disposed between the outer casing 13 and the plurality of inner casings 14. A vent hole 14 a is formed in the upper wall of each inner casing 14.

この実施形態において、複数の内筐体１４と内容器１５との間には、単電池１１が上限温度以上に発熱したときに、その上限温度以上に発熱した単電池１１を収容した内筐体１４の中へ消火剤１２を投入するための蓄圧式の消火剤投入手段が設けられる。   In this embodiment, between the plurality of inner casings 14 and the inner container 15, when the unit cells 11 generate heat above the upper limit temperature, the inner casings containing the unit cells 11 that generate heat above the upper limit temperature. A pressure-accumulating fire extinguishing agent feeding means for feeding the fire extinguishing agent 12 into the 14 is provided.

この実施形態で、蓄圧式の消火剤投入手段は、内容器１５の中において消火剤１２を圧縮する圧力源としての圧縮ガス（図示略）と、内容器１５から複数の内筐体１４の中へ消火剤１２を注入する注入管としての複数のノズル１６とを含む。圧縮ガスとして、圧縮空気や圧縮窒素を使用することができる。各ノズル１６の先端部は、対応する内筐体１４の中に差し込まれる。各ノズル１６は、対応する内筐体１４の中の単電池１１が上限温度以上に発熱したときに開くように構成される。   In this embodiment, the pressure-accumulating fire extinguishing agent charging means includes a compressed gas (not shown) as a pressure source for compressing the fire extinguishing agent 12 in the inner container 15, and a plurality of inner casings 14 from the inner container 15. And a plurality of nozzles 16 as injection pipes for injecting the fire extinguishing agent 12. Compressed air or compressed nitrogen can be used as the compressed gas. The tip of each nozzle 16 is inserted into the corresponding inner casing 14. Each nozzle 16 is configured to open when the unit cell 11 in the corresponding inner casing 14 generates heat above the upper limit temperature.

図２に、ノズル１６の先端部分を拡大して断面図により示す。図２に示すように、ノズル１６は、主として金属より形成され、先端へ向けて収束する形状を有する。ノズル１６の先端孔１６ａは、熱可塑性を有する樹脂製の栓１７により塞がれる。この栓１７は、内筐体１４の中にて、収容した単電池１１が上限温度以上に発熱したときに、その熱により溶けて破れるようになっている。この栓１７が破れることで、ノズル１６の先端孔１６ａが開くようになっている。   In FIG. 2, the front-end | tip part of the nozzle 16 is expanded and shown with sectional drawing. As shown in FIG. 2, the nozzle 16 is mainly made of metal and has a shape that converges toward the tip. The tip hole 16a of the nozzle 16 is closed by a resin plug 17 having thermoplasticity. The plug 17 is melted and torn by the heat when the accommodated unit cell 11 generates heat above the upper limit temperature in the inner casing 14. When the stopper 17 is broken, the tip hole 16a of the nozzle 16 is opened.

図１に示すように、内容器１５の中の消火剤１２は、圧縮ガスの作用による内容器１５の内圧と各ノズル１６により、電池パック１が搭載される自動車の基準面（水平面）ＳＰに対して、垂直で、かつ、各単電池１１の方向へ向けて内筐体１４の中へ投入されるようになっている。   As shown in FIG. 1, the extinguishing agent 12 in the inner container 15 is applied to the reference plane (horizontal plane) SP of the automobile on which the battery pack 1 is mounted by the internal pressure of the inner container 15 due to the action of compressed gas and each nozzle 16. On the other hand, it is inserted into the inner casing 14 vertically and in the direction of each unit cell 11.

この実施形態で、圧縮ガスの作用による内容器１５の内圧は、ある程度の高さで保たれている。消火剤１２として、例えば、泡消火剤を使用することができる。この泡の成分として、タンパク泡、水成膜泡、又は、合成界面活性剤泡等を採用することができる。   In this embodiment, the internal pressure of the inner container 15 due to the action of the compressed gas is maintained at a certain level. As the fire extinguisher 12, for example, a foam fire extinguisher can be used. As the foam component, protein foam, water film-formed foam, synthetic surfactant foam, or the like can be employed.

以上説明したこの実施形態の電池パック１によれば、同一の外筐体１３の中において、複数の単電池１１が複数の内筐体１４に分けて収容されると共に、消火剤１２が内容器１５に収容される。従って、複数の単電池１１と消火剤１２が外筐体１３の中で分離される。また、単電池１１が上限温度以上に発熱したときには、その上限温度以上に発熱した単電池１１を収容した内筐体１４の中へ内容器１５から消火剤１２が投入されるので、電池パック１の姿勢にかかわらず、上限温度以上に発熱した単電池１１に消火剤１２が投与される。すなわち、内筐体１４に収容された単電池１１が上限温度以上に発熱したとき、その内筐体１４に対応するノズル１６が開くことになる。このとき、内容器１５の中では、消火剤１２が圧縮ガスにより圧縮されているので、圧縮された消火剤１２が開いたノズル１６から内筐体１４の中へ積極的に注入され、上限温度以上に発熱した単電池１１に投与される。このため、電池パック１の姿勢にかかわらず、上限温度以上に発熱した単電池１１に消火剤１２が投与される。このため、電池パック１がどのような姿勢になっても、複数の単電池１１それぞれの上限温度以上の発熱に対処することができる。すなわち、単電池１１の上限温度以上の発熱を消火剤１２により沈静化させることができる。   According to the battery pack 1 of this embodiment described above, a plurality of single cells 11 are accommodated in a plurality of inner casings 14 in the same outer casing 13, and a fire extinguishing agent 12 is contained in an inner container. 15 is accommodated. Accordingly, the plurality of single cells 11 and the fire extinguishing agent 12 are separated in the outer casing 13. Further, when the unit cell 11 generates heat above the upper limit temperature, the extinguishing agent 12 is introduced from the inner container 15 into the inner casing 14 that houses the unit cell 11 that generates heat above the upper limit temperature. Regardless of the posture, the fire extinguishing agent 12 is administered to the unit cell 11 that has generated heat above the upper limit temperature. That is, when the unit cell 11 accommodated in the inner casing 14 generates heat above the upper limit temperature, the nozzle 16 corresponding to the inner casing 14 is opened. At this time, since the extinguishing agent 12 is compressed by the compressed gas in the inner container 15, the compressed extinguishing agent 12 is actively injected into the inner casing 14 from the opened nozzle 16, and the upper limit temperature is reached. It is administered to the unit cell 11 that has generated heat. For this reason, the fire extinguisher 12 is administered to the unit cell 11 that has generated heat above the upper limit temperature regardless of the posture of the battery pack 1. For this reason, it can cope with the heat generation more than the upper limit temperature of each of the plurality of single cells 11 regardless of the posture of the battery pack 1. That is, the heat generation above the upper limit temperature of the unit cell 11 can be calmed by the extinguishing agent 12.

より詳細には、この実施形態で、内容器１５の中の消火剤１２は、圧縮ガスの作用による内容器１５の内圧と各ノズル１６により、電池パック１が搭載される自動車の基準面（水平面）ＳＰに対して、垂直で、かつ、各単電池１１の方向へ向けて内筐体１４の中へ投入されるようになっている。従って、電池パック１が自動車の姿勢に応じて傾いたとしても、内容器１５の中の消火剤１２は、各内筐体１４の中の各単電池１１へ向けて投入可能である。このため、自動車の姿勢に応じて電池パック１の姿勢が水平状態以外の向きになっても、消火剤１２を上限温度以上に発熱した単電池１１へ投与することができる。これにより、消火剤１２を機能させて単電池１１の上限温度以上の発熱に対処することができる。   More specifically, in this embodiment, the extinguishing agent 12 in the inner container 15 is a reference plane (horizontal plane) of the automobile on which the battery pack 1 is mounted by the internal pressure of the inner container 15 due to the action of compressed gas and each nozzle 16. ) It is inserted into the inner casing 14 perpendicular to the SP and in the direction of each unit cell 11. Therefore, even if the battery pack 1 is tilted according to the attitude of the automobile, the fire extinguishing agent 12 in the inner container 15 can be introduced toward each unit cell 11 in each inner casing 14. For this reason, even if the attitude | position of the battery pack 1 becomes directions other than a horizontal state according to the attitude | position of a motor vehicle, the fire extinguisher 12 can be administered to the cell 11 which generate | occur | produced more than the upper limit temperature. Thereby, the fire extinguisher 12 can be functioned to cope with the heat generation above the upper limit temperature of the unit cell 11.

例えば、図３（ａ）に、水平状態の自動車２１の概念図を、図３（ｂ）に、それに搭載された水平状態の電池パック１の断面図をそれぞれ示す。図３（ａ），（ｂ）から分かるように、自動車２１が水平状態のときは、外筐体１３の中で内容器１５の中の消火剤１２が自動車２１の基準面ＳＰに対して、垂直で、かつ、各単電池１１の方向へ向けて内筐体１４の中へ投入可能である。   For example, FIG. 3A shows a conceptual diagram of the automobile 21 in the horizontal state, and FIG. 3B shows a cross-sectional view of the battery pack 1 in the horizontal state mounted thereon. As can be seen from FIGS. 3A and 3B, when the automobile 21 is in a horizontal state, the extinguishing agent 12 in the inner container 15 in the outer casing 13 is relative to the reference plane SP of the automobile 21. It can be inserted into the inner casing 14 vertically and in the direction of each unit cell 11.

また、図４（ａ）に、傾斜状態の自動車２１の概念図を、図４（ｂ）に、それに搭載された傾斜状態の電池パック１の断面図をそれぞれ示す。図４（ａ）,（ｂ）から分かるように、自動車２１が傾斜状態のときでも、外筐体１３の中で内容器１５の中の消火剤１２が自動車２１の基準面ＳＰに対して、垂直で、かつ、各単電池１１の方向へ向けて内筐体１４の中へ投入可能である。   FIG. 4A shows a conceptual diagram of the automobile 21 in an inclined state, and FIG. 4B shows a cross-sectional view of the battery pack 1 in an inclined state mounted thereon. As can be seen from FIGS. 4A and 4B, even when the automobile 21 is in an inclined state, the extinguishing agent 12 in the inner container 15 in the outer casing 13 is relative to the reference plane SP of the automobile 21. It can be inserted into the inner casing 14 vertically and in the direction of each unit cell 11.

また、図５（ａ）に、横転状態の自動車２１の概念図を、図５（ｂ）に、それに搭載された横転状態の電池パック１の断面図をそれぞれ示す。図５（ａ）,（ｂ）から分かるように、自動車２１が横転状態となっても、外筐体１３の中で内容器１５の中の消火剤１２が自動車２１の基準面ＳＰに対して、垂直で、かつ、各単電池１１の方向へ向けて内筐体１４の中へ投入可能である。   FIG. 5A shows a conceptual diagram of the automobile 21 in a rollover state, and FIG. 5B shows a cross-sectional view of the battery pack 1 in a rollover state mounted thereon. As can be seen from FIGS. 5 (a) and 5 (b), the fire extinguishing agent 12 in the inner container 15 in the outer casing 13 is in relation to the reference plane SP of the automobile 21 even when the automobile 21 is in a rollover state. , And can be inserted into the inner housing 14 in the direction of each unit cell 11.

また、図６（ａ）に、反転状態の自動車２１の概念図を、図６（ｂ）それに搭載された反転状態の電池パック１の断面図をそれぞれ示す。図６（ａ）,（ｂ）から分かるように、自動車２１が反転状態となっても、外筐体１３の中で内容器１５の中の消火剤１２が自動車２１の基準面ＳＰに対して、垂直で、かつ、各単電池１１の方向へ向けて内筐体１４の中へ投入可能である。   FIG. 6A shows a conceptual diagram of the automobile 21 in the inverted state, and FIG. 6B shows a cross-sectional view of the battery pack 1 in the inverted state mounted thereon. As can be seen from FIGS. 6A and 6B, even when the automobile 21 is in the inverted state, the extinguishing agent 12 in the inner container 15 in the outer casing 13 is in relation to the reference plane SP of the automobile 21. , And can be inserted into the inner housing 14 in the direction of each unit cell 11.

このため、電池パック１がどのような姿勢になっても、消火剤１２を、各内筐体１４の中の単電池１１へ向けて確実に投入することができ、単電池１１の上限温度以上の発熱に対処することができるのである。   For this reason, the fire extinguishing agent 12 can be reliably introduced toward the unit cells 11 in the respective inner casings 14 regardless of the posture of the battery pack 1, and is higher than the upper limit temperature of the unit cells 11. Can cope with the fever.

また、この実施形態では、複数の単電池１１が複数の内筐体１４に分けて収容され、それら内筐体１４の中へ消火剤１２が投入されるようになっている。このため、単電池１１が上限温度以上に発熱したときは、比較的少ない量の消火剤１２を内筐体１４の中に投入するだけで単電池１１の上限温度以上の発熱に対処することができる。しかも、この場合は、消火剤１２は、比較的狭い内筐体１４の中に留まり外部へ拡散することがないので、内筐体１４がない場合に比べて、上限温度以上の発熱に対する消火剤１２の沈静化効果を向上させることができる。   Further, in this embodiment, a plurality of single cells 11 are separately accommodated in a plurality of inner casings 14, and the fire extinguishing agent 12 is put into the inner casings 14. For this reason, when the unit cell 11 generates heat above the upper limit temperature, it is possible to deal with heat generation above the upper limit temperature of the unit cell 11 by simply inserting a relatively small amount of the extinguishing agent 12 into the inner casing 14. it can. Moreover, in this case, the fire extinguisher 12 stays in the relatively narrow inner casing 14 and does not diffuse outside, so that the fire extinguisher for heat generation above the upper limit temperature compared to the case without the inner casing 14. 12 can be improved.

更に、この実施形態では、複数の内筐体１４のうちある一つの内筐体１４に収容された単電池１１が上限温度以上に発熱した場合には、その内筐体１４に対応するノズル１６のみが開くことになる。従って、上限温度以上に発熱した単電池１１を収容する内筐体１４のみに消火剤１２が投入され、収容した単電池１１に上限温度以上の発熱のないその他の内筐体１４には消火剤１２が投入されることがない。このため、上限温度以上の発熱のないその他の内筐体１４につき、その中の正常な単電池１１を消火剤１２から守ることができ、単電池１１が消火剤１２により無駄に損傷することがない。   Furthermore, in this embodiment, when the unit cell 11 accommodated in one inner casing 14 among the plurality of inner casings 14 generates heat above the upper limit temperature, the nozzle 16 corresponding to the inner casing 14 is set. Only will open. Accordingly, the fire extinguishing agent 12 is charged only in the inner casing 14 that accommodates the unit cell 11 that has generated heat above the upper limit temperature, and the other inner casing 14 that does not generate heat above the upper limit temperature in the accommodated unit cell 11. 12 is not thrown. For this reason, about the other inner housing | casing 14 which does not generate | occur | produce heat more than upper limit temperature, the normal cell 11 in it can be protected from the fire extinguisher 12, and the cell 11 may be damaged by the fire extinguisher 12 uselessly. Absent.

＜第２実施形態＞
次に、本発明における電池パックを具体化した第２実施形態につき図面を参照して詳細に説明する。 Second Embodiment
Next, a second embodiment in which the battery pack according to the present invention is embodied will be described in detail with reference to the drawings.

なお、以下の説明において、第１実施形態と同等の構成要素については、同一の符号を付して説明を省略し、異なった点を中心に説明する。   In the following description, components equivalent to those in the first embodiment are denoted by the same reference numerals, description thereof is omitted, and different points are mainly described.

図７に、この実施形態の電池パック２の概略構成を断面図により示す。この実施形態では、加圧式の消火剤投入手段の構成の点で第１実施形態と異なる。図７に示すように、この実施形態における加圧式の消火剤投入手段は、内容器１５が樹脂などにより圧縮変形可能に構成されることと、内容器１５から各内筐体１４の中へ消火剤を注入するノズル１６と、内容器１５を圧縮変形させる圧縮部材としての複数のバネ１８とを含む。外筐体１３の中には、複数の内筐体１４の上方に位置する隔壁１３ａが形成され、その隔壁１３ａの上に内容器１５が配置される。内容器１５は、複数のバネ１８の付勢力により隔壁１３ａへ押さえ付けられることで圧縮変形している。これにより、内容器１５の中の消火剤１２が加圧されている。各ノズル１６の構成は、第１実施形態のそれと同じである。   FIG. 7 is a sectional view showing a schematic configuration of the battery pack 2 of this embodiment. This embodiment differs from the first embodiment in the configuration of the pressurization-type extinguishing agent charging means. As shown in FIG. 7, the pressurization-type extinguishing agent charging means in this embodiment is configured such that the inner container 15 is configured to be compressible and deformable by resin and the like, and the fire extinguishing from the inner container 15 into each inner casing 14 The nozzle 16 which inject | pours an agent and the some spring 18 as a compression member which compresses and deforms the inner container 15 are included. A partition wall 13a positioned above the plurality of inner housings 14 is formed in the outer housing 13, and the inner container 15 is disposed on the partition walls 13a. The inner container 15 is compressed and deformed by being pressed against the partition wall 13 a by the urging force of the plurality of springs 18. Thereby, the fire extinguisher 12 in the inner container 15 is pressurized. The configuration of each nozzle 16 is the same as that of the first embodiment.

従って、この実施形態では、各内筐体１４に収容された単電池１１が上限温度以上に発熱したとき、その内筐体１４に対応するノズル１６が開くことになる。このとき、内容器１５が複数のバネ１８により圧縮変形され、その内容器１５の中で消火剤１２が圧縮されているので、圧縮された消火剤１２が開いたノズル１６から内筐体１４の中へ積極的に注入され、上限温度以上に発熱した単電池１１に投与される。このため、電池パック２の姿勢にかかわらず、上限温度以上に発熱した単電池１１に消火剤１２が投与される。この結果、電池パック２がどのような姿勢になっても、複数の単電池１１それぞれの上限温度以上の発熱に対処することができる。すなわち、単電池１１の上限温度以上の発熱を消火剤１２により沈静化させることができる。   Therefore, in this embodiment, when the unit cell 11 accommodated in each inner casing 14 generates heat above the upper limit temperature, the nozzle 16 corresponding to the inner casing 14 is opened. At this time, since the inner container 15 is compressed and deformed by the plurality of springs 18 and the extinguishing agent 12 is compressed in the inner container 15, the compressed extinguishing agent 12 is opened from the nozzle 16 to the inner casing 14. It is actively injected into the cell 11 and administered to the unit cell 11 that has generated heat above the upper limit temperature. For this reason, the fire extinguisher 12 is administered to the unit cell 11 that has generated heat above the upper limit temperature regardless of the position of the battery pack 2. As a result, regardless of the posture of the battery pack 2, it is possible to cope with heat generation that exceeds the upper limit temperature of each of the plurality of unit cells 11. That is, the heat generation above the upper limit temperature of the unit cell 11 can be calmed by the extinguishing agent 12.

この実施形態の電池パック２に係るその他の作用効果については、第１実施形態の電池パック１のそれと基本的に同じである。   Other operational effects of the battery pack 2 of this embodiment are basically the same as those of the battery pack 1 of the first embodiment.

＜第３実施形態＞
次に、本発明における電池パックを具体化した第３実施形態につき図面を参照して詳細に説明する。 <Third Embodiment>
Next, a third embodiment in which the battery pack according to the present invention is embodied will be described in detail with reference to the drawings.

図８に、この実施形態の電池パック３の概略構成を断面図により示す。この実施形態でも、加圧式の消火剤投入手段の構成の点で第１実施形態と異なる。特に、この実施形態で、内容器１５の配置と、それに付随した構成の点で第２実施形態における加圧式の消火剤投入手段と異なる。図８に示すように、この実施形態では、外筐体１３の中において、横並びの複数の内筐体１４の片端に、消火剤１２を収容した内容器１５が配置される。外筐体１３の中には、片端の内筐体１４と内容器１５との間に隔壁１３ｂが形成される。内容器１５は、バネ１８の付勢力により隔壁１３ｂの一側面に押さえ付けられることで、圧縮変形している。これにより、内容器１５の中の消火剤１２が加圧されている。内容器１５の上部には、パイプ１９が接続され、そのパイプ１９が複数の内筐体１４の上方へ伸びる。複数のノズル１６は、このパイプ１９に設けられ、その先端部が対応する内筐体１４に差し込まれる。各ノズル１６の構成は、第１実施形態のそれと同じである。この実施形態では、パイプ１９と複数のノズル１６により、本発明の注入管が構成される。   FIG. 8 is a sectional view showing a schematic configuration of the battery pack 3 of this embodiment. This embodiment is also different from the first embodiment in the configuration of the pressurization-type extinguishing agent charging means. In particular, this embodiment differs from the pressurized fire extinguishing agent charging means in the second embodiment in the arrangement of the inner container 15 and the configuration associated therewith. As shown in FIG. 8, in this embodiment, an inner container 15 containing a fire extinguishing agent 12 is disposed at one end of a plurality of side-by-side inner casings 14 in the outer casing 13. In the outer casing 13, a partition wall 13 b is formed between the inner casing 14 and the inner container 15 at one end. The inner container 15 is compressed and deformed by being pressed against one side surface of the partition wall 13b by the urging force of the spring 18. Thereby, the fire extinguisher 12 in the inner container 15 is pressurized. A pipe 19 is connected to the upper part of the inner container 15, and the pipe 19 extends above the plurality of inner housings 14. The plurality of nozzles 16 are provided in the pipe 19, and the tip portions thereof are inserted into the corresponding inner casings 14. The configuration of each nozzle 16 is the same as that of the first embodiment. In this embodiment, the pipe 19 and the plurality of nozzles 16 constitute the injection pipe of the present invention.

従って、この実施形態では、内筐体１４に収容された単電池１１が上限温度以上に発熱したとき、その内筐体１４に対応するノズル１６が開くことになる。このとき、内容器１５がバネ１８により圧縮変形され、その内容器１５の中で消火剤１２が圧縮されているので、圧縮された消火剤１２がパイプ１９と開いたノズル１６を介して内筐体１４の中へ積極的に注入され、上限温度以上に発熱した単電池１１に投与される。このため、電池パック３の姿勢にかかわらず、上限温度以上に発熱した単電池１１に消火剤１２が投与される。この結果、電池パック３がどのような姿勢になっても、複数の単電池１１それぞれの上限温度以上の発熱に対処することができる。すなわち、単電池１１の上限温度以上の発熱を消火剤１２により沈静化させることができる。   Therefore, in this embodiment, when the unit cell 11 accommodated in the inner casing 14 generates heat above the upper limit temperature, the nozzle 16 corresponding to the inner casing 14 is opened. At this time, since the inner container 15 is compressed and deformed by the spring 18 and the extinguishing agent 12 is compressed in the inner container 15, the compressed extinguishing agent 12 passes through the pipe 19 and the nozzle 16 opened to the inner casing. It is actively injected into the body 14 and administered to the unit cell 11 that has generated heat above the upper limit temperature. For this reason, the fire extinguisher 12 is administered to the unit cell 11 that generates heat above the upper limit temperature regardless of the position of the battery pack 3. As a result, regardless of the posture of the battery pack 3, it is possible to cope with heat generation that exceeds the upper limit temperature of each of the plurality of unit cells 11. That is, the heat generation above the upper limit temperature of the unit cell 11 can be calmed by the extinguishing agent 12.

この実施形態の電池パック３に係るその他の作用効果については、第１実施形態のそれと基本的に同じである。   Other functions and effects of the battery pack 3 of this embodiment are basically the same as those of the first embodiment.

なお、この発明は前記各実施形態に限定されるものではなく、発明の趣旨を逸脱することのない範囲で構成の一部を適宜に変更して実施することもできる。   The present invention is not limited to the above-described embodiments, and a part of the configuration can be changed as appropriate without departing from the spirit of the invention.

（１）前記各実施形態では、ノズル１６の先端孔１６ａに樹脂製の栓１７を設けることで、単電池１１が上限温度以上に発熱したときに栓１７が溶けてノズル１６が開くように構成した。これに対し、例えば、単電池の上限温度以上の発熱に感応して開く機械式弁をノズルに設けることもできる。   (1) In each of the above embodiments, the stopper 16 made of resin is provided in the tip hole 16a of the nozzle 16, so that the stopper 17 melts and the nozzle 16 opens when the unit cell 11 generates heat above the upper limit temperature. did. On the other hand, for example, a mechanical valve that opens in response to heat generation above the upper limit temperature of the unit cell can be provided in the nozzle.

（２）前記各実施形態では、本発明の注入管の構成要素としてノズル１６を設けたが、このノズル１６を単なるパイプに置き換えることもできる。   (2) In each of the above embodiments, the nozzle 16 is provided as a component of the injection pipe of the present invention. However, the nozzle 16 can be replaced with a simple pipe.

（３）前記各実施形態では、一つの内筐体１４に一つのノズル１６を設けたが、一つの内筐体に複数のノズルを設けてもよい。   (3) In each of the above embodiments, one nozzle 16 is provided in one inner casing 14, but a plurality of nozzles may be provided in one inner casing.

（４）前記各実施形態では、一つの内筐体１４に複数の単電池１１を収容したが、一つの内筐体に一つの単電池を収容するようにしてもよい。   (4) In each of the above embodiments, a plurality of unit cells 11 are accommodated in one inner casing 14, but one unit cell may be accommodated in one inner casing.

この発明は、例えば、電気自動車やハイブリッド自動車等の電源に利用できる。   The present invention can be used, for example, as a power source for an electric vehicle or a hybrid vehicle.

１ 電池パック
２ 電池パック
３ 電池パック
１１ 単電池
１２ 消火剤
１３ 外筐体
１４ 内筐体
１５ 内容器
１６ ノズル（注入管）
１６ａ 先端孔
１７ 栓
１８ バネ（圧縮部材） DESCRIPTION OF SYMBOLS 1 Battery pack 2 Battery pack 3 Battery pack 11 Cell 12 Fire extinguisher 13 Outer case 14 Inner case 15 Inner container 16 Nozzle (injection pipe)
16a Tip hole 17 Plug 18 Spring (compression member)

Claims (2)

複数の単電池と消火剤を同一の外筐体に収容して構成される電池パックであって、
前記外筐体の中において、前記複数の単電池を複数の内筐体に分けて収容すると共に、前記消火剤を内容器に収容し、前記単電池が上限温度以上に発熱したときに、前記上限温度以上に発熱した単電池を収容した前記内筐体の中へ前記消火剤を投入するための消火剤投入手段を設け、
前記消火剤投入手段は、前記内容器の中において前記消火剤を圧縮する圧縮ガスと、前記内容器から前記内筐体の中へ前記消火剤を注入する注入管と、前記注入管の先端に塞ぐ栓とを含み、前記単電池が前記上限温度以上に発熱したときに、前記栓は熱により溶けて破れることにより、前記注入管は開くように構成されることを特徴とする電池パック。 A battery pack configured by housing a plurality of single cells and a fire extinguisher in the same outer casing,
In the outer casing, the plurality of single cells are accommodated in a plurality of inner casings, the fire extinguishing agent is accommodated in an inner container, and when the single cells generate heat above an upper limit temperature, A fire extinguishing agent charging means is provided for charging the fire extinguishing agent into the inner casing containing the unit cell that has generated heat above the upper limit temperature .
The extinguishing agent charging means includes a compressed gas for compressing the extinguishing agent in the inner container, an injection pipe for injecting the extinguishing agent from the inner container into the inner casing, and a tip of the injection pipe. A battery pack comprising: a plug for closing, wherein when the unit cell generates heat above the upper limit temperature, the injection tube is opened when the plug is melted and broken by heat . 複数の単電池と消火剤を同一の外筐体に収容して構成される電池パックであって、
前記外筐体の中において、前記複数の単電池を複数の内筐体に分けて収容すると共に、前記消火剤を内容器に収容し、前記単電池が上限温度以上に発熱したときに、前記上限温度以上に発熱した単電池を収容した前記内筐体の中へ前記消火剤を投入するための消火剤投入手段を設け、
前記消火剤投入手段は、前記内容器が圧縮変形可能に構成されることと、前記内容器から前記内筐体の中へ前記消火剤を注入する注入管と、前記注入管の先端に塞ぐ栓と、前記内容器を圧縮変形させる圧縮部材とを含み、前記単電池が上限温度以上に発熱したときに、前記栓は熱により溶けて破れることにより、前記注入管は開くように構成されることを特徴とする電池パック。 A battery pack configured by housing a plurality of single cells and a fire extinguisher in the same outer casing,
In the outer casing, the plurality of single cells are accommodated in a plurality of inner casings, the fire extinguishing agent is accommodated in an inner container, and when the single cells generate heat above an upper limit temperature, A fire extinguishing agent charging means is provided for charging the fire extinguishing agent into the inner casing containing the unit cell that has generated heat above the upper limit temperature.
The extinguishing agent charging means includes: an inner container configured to be compressible and deformable; an injection pipe for injecting the extinguishing agent from the inner container into the inner casing; and a plug for closing a tip of the injection pipe And a compression member for compressing and deforming the inner container, and when the unit cell generates heat above the upper limit temperature, the injection tube is configured to be opened by melting and breaking the plug by heat. It characterized the batteries pack.
JP2011125438A 2011-06-03 2011-06-03 Battery pack Active JP5760713B2 (en)

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