JP2011175844A - Battery pack - Google Patents

Battery pack Download PDF

Info

Publication number
JP2011175844A
JP2011175844A JP2010038808A JP2010038808A JP2011175844A JP 2011175844 A JP2011175844 A JP 2011175844A JP 2010038808 A JP2010038808 A JP 2010038808A JP 2010038808 A JP2010038808 A JP 2010038808A JP 2011175844 A JP2011175844 A JP 2011175844A
Authority
JP
Japan
Prior art keywords
gas
battery
battery pack
release chamber
gas release
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2010038808A
Other languages
Japanese (ja)
Inventor
Toshimichi Tsumaki
俊道 妻木
Fumihiro Akaha
史博 赤羽
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP2010038808A priority Critical patent/JP2011175844A/en
Publication of JP2011175844A publication Critical patent/JP2011175844A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To enable to exhaust gas generated from a battery cell surely outside a battery pack, and at the same time, facilitate designing, manufacturing, and assembly of a gas opening chamber for exhausting gas generated from the battery cell outside the battery pack. <P>SOLUTION: The battery pack is provided with a case 3 housing a plurality of battery cells 2, a gas opening chamber 4 set inside the case 3 in separation from a battery chamber 10 housing the battery cells 2 coupled with a sealed container 5 each constituting the battery cell 2, a blow-out valve (a one-way valve) 14 fitted between the gas opening chamber 4 and each sealed container 5 and opened on condition that the sealed container 5 becomes higher-pressured than the inside of the gas opening chamber 4, and an exhaust tube 15 communicating the gas opening chamber 4 with outside air. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、複数の電池セルを収容した電池パックに関する。   The present invention relates to a battery pack containing a plurality of battery cells.

従来より、複数の電池セル（単電池）が直列や並列に配列された電池パックが使用されている。各電池セルは、過充電などの異常時に、内部に大量のガスが発生するため、内部での燃焼や爆発防止用のガス排出口が設けられている。
ガス排出口から排出されるガスは、一般に高温であり、また、腐食性を有する場合もあるので、電池パックの一部の電池セルから排出されたガスが電池パック内に充満すると、他の電池セルや電池パックを構成する電池セル以外の部材も高温となったり腐食したりして劣化してしまうことになる。
このため、図３に示すように、各電池セル２２のガス排出口２７は、電池パック２１内に配管されたパイプ状のガス排出ダクト２４につながれ、電池セル２２内部に発生したガスは、このガス排出ダクト２４を通じて外部へ排出されている（例えば、特許文献１参照）。また、このような電池パック２１にはエギゾーストマニホールドを備えるものもある。 Conventionally, a battery pack in which a plurality of battery cells (single cells) are arranged in series or in parallel has been used. Each battery cell is provided with a gas discharge port for internal combustion and explosion prevention because a large amount of gas is generated inside during an abnormality such as overcharge.
The gas discharged from the gas discharge port is generally high temperature and may be corrosive. Therefore, when the gas discharged from some of the battery cells of the battery pack fills the battery pack, Members other than the battery cells constituting the cell and the battery pack also deteriorate due to high temperature or corrosion.
For this reason, as shown in FIG. 3, the gas outlet 27 of each battery cell 22 is connected to a pipe-like gas discharge duct 24 piped in the battery pack 21, and the gas generated inside the battery cell 22 is The gas is discharged to the outside through the gas discharge duct 24 (see, for example, Patent Document 1). Some of such battery packs 21 include an exhaust manifold.

特開２００５−１００８４０号公報Japanese Patent Laid-Open No. 2005-100840

しかしながら、従来のようなパイプ状のガス排出ダクト２４は、例えば数十個の電池セル２２が収容された電池パック２１では、配管が複雑になってコストがかかると共に、設計や製造また組み立てに労力がかかってしまう。また、各電池セル２２のガス排出口２７とガス排出ダクト２４との位置あわせに手間がかかる。
また、単に各電池セル２２のガス排出口２７がガス排出ダクト２４に接続されている場合には、一部の電池セル２２から排出されたガスＧが、ガス排出ダクト２４を通じて他の電池セル２２に流入してしまうことが考えられる。 However, the conventional pipe-like gas discharge duct 24, for example, in the battery pack 21 in which several tens of battery cells 22 are accommodated, is complicated and expensive in piping, and labor is required for designing, manufacturing, and assembling. It will take. Further, it takes time to align the gas discharge port 27 and the gas discharge duct 24 of each battery cell 22.
Further, when the gas discharge port 27 of each battery cell 22 is simply connected to the gas discharge duct 24, the gas G discharged from some of the battery cells 22 passes through the gas discharge duct 24 to other battery cells 22. It is thought that it will flow into.

また、ガス排出ダクト２４のガスが排出される出口２４ａの位置は、ガス排出ダクト２４のレイアウトによって制約されてしまい、電池パック２１を搭載する車両や機器類などの形状に合わせて任意の位置にガス排出ダクト２４の出口２４ａを設けることが難しかった。また、ガス排出ダクト２４の出口２４ａの位置を特定してしまうと、ガス排出ダクト２４のレイアウトが制約されてしまい、電池セル２２の配列も制約されてしまうことがあった。
また、電池パック２１をコンパクトにするためにガス排出ダクト２４の形状を制限すると、ガス排出ダクト２４の断面積が十分に確保できなかったり、ガス排出ダクト２４の曲がり部分や連結部分でのガス流の圧損が大きくなったりすることがあり、ガスＧの気流挙動の解析や設計が困難でガス排出ダクト２４から有効にガスＧを排出できない懸念がある。 Further, the position of the outlet 24a through which the gas is discharged from the gas discharge duct 24 is limited by the layout of the gas discharge duct 24, and can be set at an arbitrary position according to the shape of the vehicle or equipment on which the battery pack 21 is mounted. It was difficult to provide the outlet 24a of the gas exhaust duct 24. Further, if the position of the outlet 24a of the gas exhaust duct 24 is specified, the layout of the gas exhaust duct 24 is restricted, and the arrangement of the battery cells 22 may be restricted.
Further, if the shape of the gas exhaust duct 24 is limited in order to make the battery pack 21 compact, a sufficient cross-sectional area of the gas exhaust duct 24 cannot be ensured, or the gas flow at the bent portion or the connecting portion of the gas exhaust duct 24 can be prevented. There is a concern that the gas G cannot be effectively discharged from the gas discharge duct 24 because it is difficult to analyze and design the air flow behavior of the gas G.

本発明は、上述する問題点に鑑みてなされたもので、電池セルから発生したガスを確実に電池パック外に排出できると共に、電池セル内に発生したガスを電池パック外に排出するためのガス開放室の設計・製造・組み立てが容易にできる電池パックを提供することを目的とする。   The present invention has been made in view of the above-described problems, and can reliably discharge gas generated from a battery cell to the outside of the battery pack, and gas for discharging gas generated inside the battery cell to the outside of the battery pack. An object of the present invention is to provide a battery pack capable of easily designing, manufacturing and assembling an open room.

上記目的を達成するため、本発明に係る電池パックは、複数の電池セルを収容する筐体と、該筐体内に前記電池セルを収容する空間に対して分離して設けられ、前記電池セルを構成する密閉容器がそれぞれ連結されたガス開放室と、前記ガス開放室と前記密閉容器との間に設けられて、前記密閉容器内が前記ガス開放室内より高圧となったことを条件として開放される一方向弁と、前記ガス開放室を外気と連通させる排気管とを備えることを特徴とする。   In order to achieve the above object, a battery pack according to the present invention is provided separately from a housing that houses a plurality of battery cells, and a space that houses the battery cells in the housing. A gas release chamber to which each of the constituent sealed containers is connected; and between the gas release chamber and the sealed container; And a gas exhaust chamber that communicates the gas release chamber with outside air.

本発明では、密閉容器内にガスが発生し、この密閉容器内がガス開放室内より高圧となると一方向弁が開放され、密閉容器内のガスがガス開放室へ流入し、ガス開放室の排気管からガス開放室の外部へ排出される。ガス開放室と密閉容器との間には一方向弁が設けられていることにより、ガス開放室のガスが他の密閉容器に流入することを防ぐことができる。
そして、本発明では、複数の電池セルを収容する筐体内に電池セルを収容する空間に対して分離して設けられ、電池セルを構成する密閉容器がそれぞれ連結されたガス開放室を備えていることにより、従来のパイプ状のガス排出ダクトに電池セルの密閉容器を連結する電池パックと比べて、ガス排出ダクトの配管が不要であると共に、ガス開放室と密閉容器との位置合わせが容易にできるので、電池パックの設計・製造・組み立てにかかる労力やコストを軽減させることができる。 In the present invention, when gas is generated in the sealed container and the pressure in the sealed container becomes higher than that in the gas release chamber, the one-way valve is opened, the gas in the sealed container flows into the gas release chamber, and the exhaust of the gas release chamber It is discharged from the pipe to the outside of the gas release chamber. Since the one-way valve is provided between the gas release chamber and the sealed container, the gas in the gas release chamber can be prevented from flowing into another sealed container.
And in this invention, it is provided separately with respect to the space which accommodates a battery cell in the housing | casing which accommodates a some battery cell, and the gas release chamber which each connected the airtight container which comprises a battery cell is provided. This eliminates the need for piping of the gas discharge duct and facilitates alignment between the gas release chamber and the sealed container, as compared with the battery pack in which the battery cell sealed container is connected to the conventional pipe-shaped gas discharge duct. Therefore, labor and cost for designing, manufacturing and assembling the battery pack can be reduced.

また、本発明に係る電池パックでは、前記電池セルは、所定の平面上に行列状に配列されており、前記ガス開放室は、前記平面より上方の他の平面上に設けられることが好ましい。
本発明では、ガス開放室は、電池セルの配列された所定の平面より上方の他の平面上に設けられることにより、電池パックの製造を容易に行うことができる。
また、電池セルを収容する空間の上方にガス開放室が設けられることにより、例えば、電池パックが屋外に設置された場合などには、ガス開放室が空気層となり、その断熱効果によって電池室は直射日光や外気の温度変化の影響を受けにくい。
また、電池セルが発熱し電池パック内部の温度が上昇しても、ガス開放室の断熱効果によって、電池パック外部に電池パック内部の温度上昇の影響を及ぼしにくい。 In the battery pack according to the present invention, it is preferable that the battery cells are arranged in a matrix on a predetermined plane, and the gas release chamber is provided on another plane above the plane.
In the present invention, the gas release chamber is provided on another plane above the predetermined plane where the battery cells are arranged, so that the battery pack can be easily manufactured.
In addition, by providing a gas release chamber above the space for accommodating battery cells, for example, when the battery pack is installed outdoors, the gas release chamber becomes an air layer, and the battery chamber is Less susceptible to direct sunlight and ambient temperature changes.
Further, even if the battery cell generates heat and the temperature inside the battery pack rises, it is difficult to influence the temperature rise inside the battery pack outside the battery pack due to the heat insulating effect of the gas release chamber.

また、本発明に係る電池パックでは、前記ガス開放室は、六面体状をなし、前記排気管が前記六面体のいずれかの面に設けられてもよい。
本発明では、排気管が六面体のいずれかの面に設けられてもよいことにより、電池パックが搭載される車両や機器類にあわせて位置を設定することができ、電池パックのレイアウト性を高めることができる。 In the battery pack according to the present invention, the gas release chamber may have a hexahedron shape, and the exhaust pipe may be provided on any surface of the hexahedron.
In the present invention, since the exhaust pipe may be provided on any surface of the hexahedron, the position can be set in accordance with the vehicle or the device on which the battery pack is mounted, and the layout of the battery pack is improved. be able to.

本発明によれば、電池セルの密閉容器内から発生したガスは他の電池セルの密閉容器内に流入することがなく効率よくガス開放室の外部に排出できると共に、電池パックの設計・製造・組み立てにかかる労力やコストを軽減させることができる   According to the present invention, the gas generated from the sealed container of the battery cell can be efficiently discharged to the outside of the gas release chamber without flowing into the sealed container of the other battery cell, and the battery pack can be designed, manufactured, Can reduce the labor and cost of assembly

（ａ）は本発明の実施の形態による電池パックの一例を示す図で（ｂ）のＡ−Ａ線断面図、（ｂ）は（ａ）のＢ−Ｂ線断面図、（ｃ）は（ａ）のＣ−Ｃ線断面図である。(A) is a figure which shows an example of the battery pack by embodiment of this invention, (B) is the sectional view on the AA line of (b), (b) is the sectional view on the BB line of (a), (c) is ( It is CC sectional view taken on the line of a). 電池セルから発生したガスの排出方法を説明する図である。It is a figure explaining the discharge method of the gas generated from the battery cell. 従来の電池パックの一例を示す図である。It is a figure which shows an example of the conventional battery pack.

以下、本発明の実施の形態による電池パックについて、図１および図２に基づいて説明する。
図１（ａ）乃至（ｃ）に示すように、本実施の形態による電池パック１は、複数の電池セル２と、複数の電池セル２を収容するケース３と、ケース３内に設けられたガス開放室４とから概略構成される。
電池セル２は、内部に図示しない電極板などを備える略直方体の密閉容器５と、密閉容器５の上面５ａからそれぞれ上方に突出する正極および負極の電極端子６とを備えている。密閉容器５の上面５ａには、密閉容器５の内外を連通させて密閉容器５内にガスが発生した際に密閉容器５内からガスを排出させるガス排出口７が形成されている。 Hereinafter, a battery pack according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2.
As shown in FIGS. 1A to 1C, the battery pack 1 according to the present embodiment is provided with a plurality of battery cells 2, a case 3 that houses the plurality of battery cells 2, and the case 3. The gas release chamber 4 is generally configured.
The battery cell 2 includes a substantially rectangular parallelepiped sealed container 5 provided with an electrode plate (not shown) and the like, and a positive electrode electrode terminal 6 and a negative electrode terminal 6 projecting upward from an upper surface 5a of the sealed container 5, respectively. The upper surface 5a of the sealed container 5 is formed with a gas discharge port 7 through which the inside and outside of the sealed container 5 are communicated to discharge gas from the sealed container 5 when gas is generated in the sealed container 5.

ケース３は、上方が開口した略直方体形状の収容部８と、収容部８の上部に設置される蓋部９とから構成される。
ケース３には、下部側の空間に１２個の電池セル２が３行４列に配列された電池室１０が形成され、上部側の空間がガス開放室４となっている。電池室１０とガス開放室４との間には、仕切板１１が設けられている。ガス開放室４、電池室１０は、共に略直方体形状である
仕切板１１は、ケース３内の側面に密着して固定されている。
電池セル２は、例えば下面や側面がケース３内に固定されている。 The case 3 includes a substantially rectangular parallelepiped housing portion 8 that is open at the top, and a lid portion 9 that is installed on top of the housing portion 8.
In the case 3, a battery chamber 10 in which twelve battery cells 2 are arranged in three rows and four columns is formed in a lower space, and the upper space is a gas release chamber 4. A partition plate 11 is provided between the battery chamber 10 and the gas release chamber 4. Both the gas release chamber 4 and the battery chamber 10 have a substantially rectangular parallelepiped shape. The partition plate 11 is fixed in close contact with the side surface in the case 3.
For example, the battery cell 2 has a lower surface and a side surface fixed in the case 3.

電池セル２と仕切板１１との間には、ゴムなどの弾性体で形成され、電池セル２および仕切板１１と密着して電池セル２の位置を固定する固定部材１３が配設されている。固定部材１３は、上下方向に貫通する貫通孔１３ａを備え、貫通孔１３ａの下端は電池セル２のガス排出口７と接続され、貫通孔１３ａの上端は仕切板１１に形成されたガス流入口１２と接続されている。
ガス流入口１２は、各電池セル２のガス排出口７の鉛直上に位置しており、仕切板１１には各電池セル２のガス排出口７に対応して複数のガス流入口１２が形成されている。 Between the battery cell 2 and the partition plate 11, a fixing member 13 that is formed of an elastic body such as rubber and is in close contact with the battery cell 2 and the partition plate 11 to fix the position of the battery cell 2 is disposed. . The fixing member 13 includes a through hole 13a penetrating in the vertical direction, the lower end of the through hole 13a is connected to the gas outlet 7 of the battery cell 2, and the upper end of the through hole 13a is a gas inlet formed in the partition plate 11. 12 is connected.
The gas inlet 12 is positioned vertically above the gas outlet 7 of each battery cell 2, and a plurality of gas inlets 12 are formed in the partition plate 11 corresponding to the gas outlet 7 of each battery cell 2. Has been.

各ガス流入口１２には、一方向に開放可能なブローアウト弁（一方向弁）１４が設けられている。
ブローアウト弁１４は、ガス流入口１２のガス開放室４側に設けられた金属板などで、密閉容器５内がガス開放室４内よりも高圧となったことを条件としてガス開放室４側に吹き飛ぶ弁である。ブローアウト弁１４は、密閉容器５側には移動しない構成である。
通常時は、ブローアウト弁１４がガス流入口１２を塞いで密閉容器５内とガス開放室４内の連通を遮断している。そして、密閉容器５内にガスが発生し、密閉容器５内がガス開放室４内よりも高圧となりブローアウト弁１４がガス開放室４側に吹き飛ぶと、ガス流入口１２が開放されて、固定部材１３の貫通孔１３ａを通して電池セル２の密閉容器５の内部とガス開放室４の内部とが連通する。 Each gas inlet 12 is provided with a blowout valve (one-way valve) 14 that can be opened in one direction.
The blowout valve 14 is a metal plate or the like provided on the gas release chamber 4 side of the gas inlet 12, and the gas release chamber 4 side is provided on the condition that the inside of the sealed container 5 is higher than the gas release chamber 4. It is a valve that blows away. The blowout valve 14 is configured not to move to the closed container 5 side.
Under normal conditions, the blowout valve 14 closes the gas inlet 12 to block communication between the sealed container 5 and the gas release chamber 4. When gas is generated in the sealed container 5 and the pressure in the sealed container 5 becomes higher than that in the gas release chamber 4 and the blowout valve 14 blows off to the gas release chamber 4 side, the gas inlet 12 is opened and fixed. The inside of the sealed container 5 of the battery cell 2 and the inside of the gas release chamber 4 communicate with each other through the through hole 13 a of the member 13.

ガス開放室４には、内部のガスを電池パック１外に排出する排気管１５が設けられている。本実施の形態では、排気管１５はガス開放室４の側面に設けられているが、内部のガスを電池パック１外に排出できる位置であればガス開放室４どの位置に設けられてもよい。また、排気管１５は１個設けられてもよいし、複数個設けられてもよい。ガス開放室４の任意の位置に排気管１５を設けることができることにより、電池パック１のレイアウト性を高めることができる。
また、電池セル２から発生したガスが有害成分を含有する場合には、この有害成分と結合し有害性を除去または低減できる薬剤などをガス開放室４内に入れておいてもよい。また、この薬剤を乾燥剤のような形態とし、ガスと触れ易いように充填しても良い。 The gas release chamber 4 is provided with an exhaust pipe 15 that discharges internal gas to the outside of the battery pack 1. In the present embodiment, the exhaust pipe 15 is provided on the side surface of the gas release chamber 4, but may be provided at any position in the gas release chamber 4 as long as the internal gas can be discharged out of the battery pack 1. . One exhaust pipe 15 or a plurality of exhaust pipes 15 may be provided. Since the exhaust pipe 15 can be provided at an arbitrary position in the gas release chamber 4, the layout of the battery pack 1 can be improved.
When the gas generated from the battery cell 2 contains a harmful component, a chemical or the like that can be combined with this harmful component to remove or reduce the harmfulness may be placed in the gas release chamber 4. Further, this medicine may be in the form of a desiccant and filled so as to be easily in contact with gas.

使用する薬剤として、例えば、有害成分が一酸化炭素（ＣＯ）の場合には、一酸化炭素を吸収し二酸化炭素（ＣＯ２）にして毒性を減らすホプカライト（ＣｕＭｎ２Ｏ４）などが有効である。また、有害成分が腐食性ガスの場合には、シリカゲルや酸化カルシウムなどが有効である。
また、このような薬剤は、空気中に暴露しておくと、平時にわずかな一酸化炭素や水分を吸収してしまい、ガスが発生した際には劣化している可能性がある。このため、水分を通しにくいビニル等のフィルムで薬剤を密封し、ガスが発生した際に高温のガスがフィルムに当たりフィルムが溶けることで薬剤を露出させ、ガスに含まれる有害成分を除去または低減させるを構成とすることが好ましい。 As a chemical to be used, for example, when the harmful component is carbon monoxide (CO), hopcalite (CuMn2O4) that absorbs carbon monoxide to carbon dioxide (CO2) to reduce toxicity is effective. In addition, when the harmful component is a corrosive gas, silica gel or calcium oxide is effective.
In addition, when such a chemical is exposed to the air, it absorbs a small amount of carbon monoxide and moisture during normal times, and may deteriorate when gas is generated. For this reason, the drug is sealed with a film such as vinyl that is difficult to pass moisture, and when the gas is generated, the high temperature gas hits the film and the film dissolves to expose the drug, thereby removing or reducing harmful components contained in the gas. Is preferable.

上述した本実施の形態による電池パック１では、ガス開放室４は以下のように設置される。
ケース３内に配列された電池セル２の上部に、電池セル２のガス排出口７と固定部材１３の貫通孔１３ａとが重なるように固定部材１３を設置する。そして、固定部材１３の上部に、仕切板１１のガス流入口１２と固定部材１３の貫通孔１３ａとが重なるように仕切板１１を設置する。このとき、ガス開放室４は電池パック１の上部側の空間であることにより、図３に示すようなパイプ状のガス排出ダクト２４が設置された従来の電池パック２１と比べて、電池セル２２とガス排出ダクト２４の位置あわせを行わなくてよいので、容易に設置することができる。 In the battery pack 1 according to this embodiment described above, the gas release chamber 4 is installed as follows.
The fixing member 13 is installed on the upper part of the battery cell 2 arranged in the case 3 so that the gas discharge port 7 of the battery cell 2 and the through hole 13a of the fixing member 13 overlap. And the partition plate 11 is installed in the upper part of the fixing member 13 so that the gas inflow port 12 of the partition plate 11 and the through-hole 13a of the fixing member 13 may overlap. At this time, since the gas release chamber 4 is a space on the upper side of the battery pack 1, the battery cell 22 is compared with the conventional battery pack 21 in which the pipe-shaped gas discharge duct 24 as shown in FIG. Since it is not necessary to align the gas exhaust duct 24, it can be easily installed.

次に、ガス流入口１２にブローアウト弁１４を設置する。そして、ガス開放室４に排気管１５を取り付けると共に、収容部８の上部に蓋部９を設置してガス開放室４が完成する。
なお、ブローアウト弁１４は、仕切板１１を収容部８に設置する前に予めガス流入口１２を塞ぐように仕切板１１に設置しておいてもよい。また、排気管１５は収容部８を製造する際に設置されていてもよい。 Next, a blowout valve 14 is installed at the gas inlet 12. Then, the exhaust pipe 15 is attached to the gas release chamber 4, and the lid portion 9 is installed on the upper portion of the accommodating portion 8 to complete the gas release chamber 4.
Note that the blowout valve 14 may be installed in the partition plate 11 in advance so as to close the gas inlet 12 before the partition plate 11 is installed in the accommodating portion 8. Further, the exhaust pipe 15 may be installed when the accommodating portion 8 is manufactured.

次に、本実施の形態による電池パックの電池セル内に発生したガスの排出方法について説明する。
図２に示すように、過充電などの異変により、一部の電池セル２Ａの密閉容器５内にガスＧが発生して充満すると、密閉容器５内の圧力が上昇し、ガス開放室４内よりも高圧となる。
そして、密閉容器５内がガス開放室４内よりも高圧となったことにより、電池セル２Ａのブローアウト弁１４がガス開放室４側に吹き飛ばされて、ガスＧが発生した密閉容器５内とガス開放室４内とが連通する。 Next, a method for discharging the gas generated in the battery cells of the battery pack according to the present embodiment will be described.
As shown in FIG. 2, when gas G is generated and filled in the sealed container 5 of some battery cells 2A due to an abnormality such as overcharge, the pressure in the sealed container 5 rises, and the inside of the gas release chamber 4 Higher pressure.
When the inside of the sealed container 5 becomes higher than the inside of the gas release chamber 4, the blowout valve 14 of the battery cell 2A is blown off to the gas release chamber 4 side, and the inside of the sealed container 5 in which the gas G is generated The inside of the gas release chamber 4 communicates.

密閉容器５内に発生したガスＧは、固定部材１３の貫通孔１３ａを通してガス開放室４に流入し、ガス開放室４に設けられた排気管１５から電池パック１外に排出される。
このとき、ブローアウト弁１４は一方向弁であることにより、他の正常な電池セル２Ｂのブローアウト弁１４は閉じたままであるので、ガス開放室４内のガスが、正常な電池セル２Ｂの密閉容器５内に流入することがない。 The gas G generated in the sealed container 5 flows into the gas release chamber 4 through the through hole 13 a of the fixing member 13 and is discharged out of the battery pack 1 from the exhaust pipe 15 provided in the gas release chamber 4.
At this time, since the blowout valve 14 is a one-way valve, the blowout valve 14 of the other normal battery cell 2B remains closed, so that the gas in the gas release chamber 4 is transferred to the normal battery cell 2B. It does not flow into the sealed container 5.

次に、上述した電池パックの効果について図面を用いて説明する。
本実施の形態による電池パック１によれば、電池セル２Ａの密閉容器５内に発生したガスＧを、ガス開放室４に設けられた排気管１５から電池パック１外に排出できると共に、ガスが発生した電池セル２Ａ以外の電池セル２Ｂのブローアウト弁１４は閉じたままで、電池セル２Ａから発生したガスＧが他の電池セル２Ｂの密閉容器５内に流入することを防止できる効果を奏する。
また、ガス開放室４は電池パック１のケース３の上部側の空間に形成されていることにより、図３に示すようなパイプ状のガス排出ダクト２４に電池セル２２のガス排出口２７を連結し、このガス排出ダクト２４からガスＧを排出させる従来の電池パック２１と比べて、ダクトを配管する必要がなく、ガス開放室４と電池セル２のガス排出口７との位置あわせが容易なので（図１参照）、電池パック１の設計・製造・組み立てにかかる労力やコストを低減させることができる。 Next, the effect of the battery pack described above will be described with reference to the drawings.
According to the battery pack 1 of the present embodiment, the gas G generated in the sealed container 5 of the battery cell 2A can be discharged out of the battery pack 1 from the exhaust pipe 15 provided in the gas release chamber 4, and the gas is The blowout valve 14 of the battery cells 2B other than the generated battery cell 2A remains closed, and the effect that the gas G generated from the battery cell 2A can be prevented from flowing into the sealed container 5 of the other battery cell 2B is achieved.
Further, since the gas release chamber 4 is formed in the space on the upper side of the case 3 of the battery pack 1, a gas discharge port 27 of the battery cell 22 is connected to a pipe-shaped gas discharge duct 24 as shown in FIG. However, as compared with the conventional battery pack 21 in which the gas G is discharged from the gas discharge duct 24, it is not necessary to connect a duct, and the gas release chamber 4 and the gas discharge port 7 of the battery cell 2 can be easily aligned. (Refer FIG. 1) and the labor and cost concerning design, manufacture, and assembly of the battery pack 1 can be reduced.

また、図３に示すような従来の電池パック２１では、電池セル２２の位置を変更するとこれに伴いガス排出ダクト２４の配管も変更しなければならないことがあったが、図１に示す本実施の形態による電池パック１では、電池セル２の位置を変更しても、この位置に合わせて仕切板１１にガス流入口１２を形成すればよく、ガス開放室４の形状を変更させることがないので、電池セル２の位置変更にも容易に対応でき、設計の自由度がある。
また、本実施の形態による電池パック１では、ケース３の上部側全体に形成されたガス開放室４からガスＧを排出させることにより、従来のパイプ状のガス排出ダクト２４（図３参照）のようにガスＧの流路に角部や断面形状が変化する部分がなく、ガス流の排気圧損を減らすことができるので、ガスＧはガス開放室４から安定した状態で確実に排出され電池パック１の安全性を向上させることができる。
また、ガス開放室４の排気管１５は、ガス開放室４の任意の位置に設置できるので、電池パック１を搭載する車両や機器類に合わせて排気管１５の位置を設定することができ、電池パック１のレイアウト性を高めることができる。 Further, in the conventional battery pack 21 as shown in FIG. 3, when the position of the battery cell 22 is changed, the piping of the gas discharge duct 24 may have to be changed accordingly, but this embodiment shown in FIG. In the battery pack 1 according to the embodiment, even if the position of the battery cell 2 is changed, the gas inlet 12 may be formed in the partition plate 11 according to this position, and the shape of the gas release chamber 4 is not changed. Therefore, it is possible to easily cope with a change in position of the battery cell 2 and there is a degree of freedom in design.
Further, in the battery pack 1 according to the present embodiment, the gas G is discharged from the gas release chamber 4 formed on the entire upper side of the case 3, whereby the conventional pipe-shaped gas discharge duct 24 (see FIG. 3). In this way, there are no portions where the corners and the cross-sectional shape change in the flow path of the gas G, and the exhaust pressure loss of the gas flow can be reduced, so that the gas G is reliably discharged from the gas release chamber 4 in a stable state. 1 safety can be improved.
Further, since the exhaust pipe 15 of the gas release chamber 4 can be installed at an arbitrary position of the gas release chamber 4, the position of the exhaust pipe 15 can be set according to the vehicle and the equipment on which the battery pack 1 is mounted. The layout of the battery pack 1 can be improved.

また、電池室１０の上部側にガス開放室４が設けられていることにより、電池パック１外部の温度変化がガス開放室４の断熱効果によって電池室１０に伝達しにくい。例えば、電池パック１が屋外に設置された場合などには、ガス開放室４の断熱効果によって電池室１０は直射日光による温度上昇の影響を受けにくい。また、電池室１０の温度変化が電池パック１の外部に伝達しにくい。
また、電池パック１の一部をガス開放室４としているので、図３に示すパイプ状のガス排出ダクト２４が配管された従来の電池パック２１と比べて、製造が行いやすいと共に、電池パック１をコンパクトにすることができる。 Further, since the gas release chamber 4 is provided on the upper side of the battery chamber 10, the temperature change outside the battery pack 1 is not easily transmitted to the battery chamber 10 due to the heat insulating effect of the gas release chamber 4. For example, when the battery pack 1 is installed outdoors, the battery chamber 10 is less susceptible to temperature rise due to direct sunlight due to the heat insulating effect of the gas release chamber 4. Further, the temperature change of the battery chamber 10 is not easily transmitted to the outside of the battery pack 1.
Further, since a part of the battery pack 1 is used as the gas release chamber 4, the battery pack 1 is easier to manufacture than the conventional battery pack 21 provided with the pipe-like gas discharge duct 24 shown in FIG. Can be made compact.

以上、本発明による電池パック１の実施の形態について説明したが、本発明は上記の実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲で適宜変更可能である。
例えば、上述した実施の形態では、固定部材１３は、弾性体で形成されて電池セル２の位置を固定し、貫通孔１３ａを介してガス排出口７とガス流入口１２とを連結しているが、固定部材１３は、弾性体で形成されていなくてもよい。また、固定部材１３に代わって、ガス排出口７とガス流入口１２とを連結する部材を設けてもよく、また、ガス排出口７とガス流入口１２とを直接連結してもよい。
また、上記の実施の形態では、ガス排出口７の鉛直上にガス流入口１２が設けられているが、ガス排出口７とガス流入口１２とが連結されていれば、ガス排出口７とガス流入口１２の位置が鉛直方向にずれていてもよい。
また、上記の実施の形態では、電池室１０の上部にガス開放室４が設けられているが、ガス開放室４の位置は、電池室１０に対して側方や下方に設けられてもよい。
また、上記の実施の形態では、電池セル２が３行４列に配列されているが、このほか形態に配列されていてもよい。 As mentioned above, although embodiment of the battery pack 1 by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the above-described embodiment, the fixing member 13 is formed of an elastic body, fixes the position of the battery cell 2, and connects the gas discharge port 7 and the gas inlet 12 via the through hole 13a. However, the fixing member 13 may not be formed of an elastic body. Instead of the fixing member 13, a member for connecting the gas outlet 7 and the gas inlet 12 may be provided, or the gas outlet 7 and the gas inlet 12 may be directly connected.
In the above embodiment, the gas inlet 12 is provided vertically above the gas outlet 7. However, if the gas outlet 7 and the gas inlet 12 are connected, The position of the gas inlet 12 may be shifted in the vertical direction.
In the above embodiment, the gas release chamber 4 is provided in the upper part of the battery chamber 10, but the position of the gas release chamber 4 may be provided laterally or downward with respect to the battery chamber 10. .
Moreover, in said embodiment, although the battery cell 2 is arranged in 3 rows 4 columns, you may arrange in other forms.

１ 電池パック
２、２Ａ、２Ｂ 電池セル
３ ケース（筐体）
４ ガス開放室
５ 密閉容器
７ ガス排出口
１０ 電池室
１１ 仕切板
１２ ガス流入口
１４ ブローアウト弁（一方向弁）
１５ 排気管 1 Battery pack 2, 2A, 2B Battery cell 3 Case (housing)
4 Gas release chamber 5 Sealed container 7 Gas discharge port 10 Battery chamber 11 Partition plate 12 Gas inlet 14 Blow-out valve (one-way valve)
15 Exhaust pipe

Claims (3)

複数の電池セルを収容する筐体と、
該筐体内に前記電池セルを収容する空間に対して分離して設けられ、前記電池セルを構成する密閉容器がそれぞれ連結されたガス開放室と、
前記ガス開放室と前記密閉容器との間に設けられて、前記密閉容器内が前記ガス開放室内より高圧となったことを条件として開放される一方向弁と、
前記ガス開放室を外気と連通させる排気管とを備えることを特徴とする電池パック。 A housing that houses a plurality of battery cells;
A gas release chamber that is provided separately from the space for housing the battery cell in the housing and to which the sealed containers constituting the battery cell are respectively connected;
A one-way valve provided between the gas release chamber and the sealed container and opened on the condition that the inside of the sealed container has a higher pressure than the gas release chamber;
A battery pack comprising an exhaust pipe for communicating the gas release chamber with outside air. 前記電池セルは、所定の平面上に行列状に配列されており、前記ガス開放室は、前記平面より上方の他の平面上に設けられたことを特徴とする請求項１に記載の電池パック。   The battery pack according to claim 1, wherein the battery cells are arranged in a matrix on a predetermined plane, and the gas release chamber is provided on another plane above the plane. . 前記ガス開放室は、六面体状をなし、前記排気管が前記六面体のいずれかの面に設けられたことを特徴とする請求項１又は２に記載の電池パック。
The battery pack according to claim 1, wherein the gas release chamber has a hexahedron shape, and the exhaust pipe is provided on any surface of the hexahedron.
JP2010038808A 2010-02-24 2010-02-24 Battery pack Pending JP2011175844A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2010038808A JP2011175844A (en) 2010-02-24 2010-02-24 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2010038808A JP2011175844A (en) 2010-02-24 2010-02-24 Battery pack

Publications (1)

Publication Number Publication Date
JP2011175844A true JP2011175844A (en) 2011-09-08

Family

ID=44688525

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2010038808A Pending JP2011175844A (en) 2010-02-24 2010-02-24 Battery pack

Country Status (1)

Country Link
JP (1) JP2011175844A (en)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012073432A1 (en) * 2010-12-03 2012-06-07 パナソニック株式会社 Battery pack
WO2015118597A1 (en) * 2014-02-07 2015-08-13 パナソニックＩｐマネジメント株式会社 Battery module
JP2015195128A (en) * 2014-03-31 2015-11-05 株式会社Ｇｓユアサ power storage device
US9614210B2 (en) 2014-09-30 2017-04-04 Johnson Controls Technology Company Battery module vent system and method
KR101776336B1 (en) * 2011-12-09 2017-09-08 현대자동차주식회사 Gas Recirculation Type Battery
CN110165104A (en) * 2016-07-29 2019-08-23 苹果公司 High density battery pack
WO2020138254A1 (en) * 2018-12-26 2020-07-02 大日本印刷株式会社 Valve device and assembled battery
JP2020107603A (en) * 2019-11-26 2020-07-09 大日本印刷株式会社 Valve device and assembled battery
JP2020107588A (en) * 2019-01-30 2020-07-09 大日本印刷株式会社 Valve device and assembled battery
US10734623B2 (en) * 2016-08-31 2020-08-04 Samsung Sdi Co., Ltd. Battery pack
CN111969158A (en) * 2020-08-21 2020-11-20 欣旺达惠州动力新能源有限公司 Sealed battery pack
CN112074970A (en) * 2018-07-09 2020-12-11 宝马股份公司 Vehicle with high-pressure accumulator
WO2021088570A1 (en) * 2019-11-08 2021-05-14 宁德时代新能源科技股份有限公司 Battery pack and apparatus
CN113140861A (en) * 2021-04-23 2021-07-20 江铃汽车股份有限公司 Battery case and battery pack
US11296381B2 (en) 2016-07-29 2022-04-05 Apple Inc. High-density battery pack
US11296380B2 (en) 2016-07-29 2022-04-05 Apple Inc. Battery packs having structural members for improving thermal management
US11469471B1 (en) 2018-02-02 2022-10-11 Apple Inc. Battery pack heat dispensing systems
US11502354B1 (en) 2016-11-30 2022-11-15 Apple Inc. Directed quench systems and components
CN115398721A (en) * 2021-03-15 2022-11-25 宁德时代新能源科技股份有限公司 Battery, electric device, and method and device for preparing battery
EP4184692A2 (en) 2021-11-19 2023-05-24 Heinz Wenzl Batterysystem
WO2023134501A1 (en) * 2022-01-14 2023-07-20 宁德时代新能源科技股份有限公司 Energy storage container
US11757149B1 (en) 2016-09-20 2023-09-12 Apple Inc. Battery liquid quench system and methods of manufacture thereof
US11764431B2 (en) 2020-10-22 2023-09-19 Apple Inc. Battery pack structures and systems
US11870092B1 (en) 2017-02-01 2024-01-09 Apple Inc. On-board vent gas abatement
US12002976B2 (en) 2021-05-12 2024-06-04 Apple Inc. Battery pack structures and systems

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001057202A (en) * 1999-06-07 2001-02-27 Matsushita Electric Ind Co Ltd Storage battery
JP2003045394A (en) * 2001-07-26 2003-02-14 Matsushita Electric Ind Co Ltd Lead storage battery with control valve
JP2006182264A (en) * 2004-12-28 2006-07-13 Toyota Motor Corp Exhaust device for hybrid vehicle
JP2007012486A (en) * 2005-06-30 2007-01-18 Sanyo Electric Co Ltd Power supply device
JP2007027011A (en) * 2005-07-20 2007-02-01 Sanyo Electric Co Ltd Power source device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001057202A (en) * 1999-06-07 2001-02-27 Matsushita Electric Ind Co Ltd Storage battery
JP2003045394A (en) * 2001-07-26 2003-02-14 Matsushita Electric Ind Co Ltd Lead storage battery with control valve
JP2006182264A (en) * 2004-12-28 2006-07-13 Toyota Motor Corp Exhaust device for hybrid vehicle
JP2007012486A (en) * 2005-06-30 2007-01-18 Sanyo Electric Co Ltd Power supply device
JP2007027011A (en) * 2005-07-20 2007-02-01 Sanyo Electric Co Ltd Power source device

Cited By (46)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102859750A (en) * 2010-12-03 2013-01-02 松下电器产业株式会社 Battery pack
JP5148782B2 (en) * 2010-12-03 2013-02-20 パナソニック株式会社 Battery pack
WO2012073432A1 (en) * 2010-12-03 2012-06-07 パナソニック株式会社 Battery pack
CN102859750B (en) * 2010-12-03 2016-01-06 松下知识产权经营株式会社 Power brick
US9337454B2 (en) 2010-12-03 2016-05-10 Panasonic Intellectual Property Management Co., Ltd. Battery pack including gas absorption portion
KR101776336B1 (en) * 2011-12-09 2017-09-08 현대자동차주식회사 Gas Recirculation Type Battery
WO2015118597A1 (en) * 2014-02-07 2015-08-13 パナソニックＩｐマネジメント株式会社 Battery module
CN105960719A (en) * 2014-02-07 2016-09-21 松下知识产权经营株式会社 Battery module
JPWO2015118597A1 (en) * 2014-02-07 2017-03-23 パナソニックＩｐマネジメント株式会社 Battery module
US10276843B2 (en) 2014-02-07 2019-04-30 Panasonic Intellectual Property Management Co., Ltd. Battery module
US10290845B2 (en) 2014-03-31 2019-05-14 Gs Yuasa International Ltd. Energy storage apparatus
US11362394B2 (en) 2014-03-31 2022-06-14 Gs Yuasa International Ltd. Energy storage apparatus
JP2015195128A (en) * 2014-03-31 2015-11-05 株式会社Ｇｓユアサ power storage device
US9614210B2 (en) 2014-09-30 2017-04-04 Johnson Controls Technology Company Battery module vent system and method
CN110165104A (en) * 2016-07-29 2019-08-23 苹果公司 High density battery pack
US11296380B2 (en) 2016-07-29 2022-04-05 Apple Inc. Battery packs having structural members for improving thermal management
US11296381B2 (en) 2016-07-29 2022-04-05 Apple Inc. High-density battery pack
US11699821B2 (en) 2016-07-29 2023-07-11 Apple Inc. Battery packs having structural members for improving thermal management
US10734623B2 (en) * 2016-08-31 2020-08-04 Samsung Sdi Co., Ltd. Battery pack
US11757149B1 (en) 2016-09-20 2023-09-12 Apple Inc. Battery liquid quench system and methods of manufacture thereof
US11502354B1 (en) 2016-11-30 2022-11-15 Apple Inc. Directed quench systems and components
US11870092B1 (en) 2017-02-01 2024-01-09 Apple Inc. On-board vent gas abatement
US11469471B1 (en) 2018-02-02 2022-10-11 Apple Inc. Battery pack heat dispensing systems
US11916247B1 (en) 2018-02-02 2024-02-27 Apple Inc. Battery pack heat dispensing systems
CN112074970A (en) * 2018-07-09 2020-12-11 宝马股份公司 Vehicle with high-pressure accumulator
CN113228395A (en) * 2018-12-26 2021-08-06 大日本印刷株式会社 Valve device and battery pack
CN113228395B (en) * 2018-12-26 2023-07-25 大日本印刷株式会社 Valve device and battery pack
WO2020138254A1 (en) * 2018-12-26 2020-07-02 大日本印刷株式会社 Valve device and assembled battery
JP7371640B2 (en) 2018-12-26 2023-10-31 大日本印刷株式会社 Valve device and assembled battery
JP2020107588A (en) * 2019-01-30 2020-07-09 大日本印刷株式会社 Valve device and assembled battery
WO2021088570A1 (en) * 2019-11-08 2021-05-14 宁德时代新能源科技股份有限公司 Battery pack and apparatus
JP7259713B2 (en) 2019-11-26 2023-04-18 大日本印刷株式会社 Valve device and assembled battery
JP2020107603A (en) * 2019-11-26 2020-07-09 大日本印刷株式会社 Valve device and assembled battery
CN111969158A (en) * 2020-08-21 2020-11-20 欣旺达惠州动力新能源有限公司 Sealed battery pack
US11936055B2 (en) 2020-10-22 2024-03-19 Apple Inc. Battery pack structures and systems
US11764431B2 (en) 2020-10-22 2023-09-19 Apple Inc. Battery pack structures and systems
US11973235B2 (en) 2020-10-22 2024-04-30 Apple Inc. Battery pack structures and systems
CN115398721B (en) * 2021-03-15 2023-11-03 宁德时代新能源科技股份有限公司 Battery, power utilization device, method and device for preparing battery
CN115398721A (en) * 2021-03-15 2022-11-25 宁德时代新能源科技股份有限公司 Battery, electric device, and method and device for preparing battery
CN113140861A (en) * 2021-04-23 2021-07-20 江铃汽车股份有限公司 Battery case and battery pack
US12002976B2 (en) 2021-05-12 2024-06-04 Apple Inc. Battery pack structures and systems
US12002977B2 (en) 2021-05-12 2024-06-04 Apple Inc. Battery pack structures and systems
US12009655B2 (en) 2021-09-15 2024-06-11 Apple Inc. Switchable pyro fuse
DE102021005751A1 (en) 2021-11-19 2023-05-25 Volkswagen Aktiengesellschaft battery system
EP4184692A2 (en) 2021-11-19 2023-05-24 Heinz Wenzl Batterysystem
WO2023134501A1 (en) * 2022-01-14 2023-07-20 宁德时代新能源科技股份有限公司 Energy storage container

Similar Documents

Publication Publication Date Title
JP2011175844A (en) Battery pack
JP5903607B2 (en) Battery pack
US11217857B2 (en) Method and apparatus for managing thermal runaway gases in a battery system
TWI712204B (en) Power battery pack and vehicle
JP5420064B2 (en) Battery pack
WO2020134051A1 (en) Battery tray and power battery pack
JP5619154B2 (en) Battery pack
CN110335973B (en) Fire protection device for solid-state battery
JP2011129372A (en) Secondary battery device
JP2006185894A (en) Film-armored electric device assembly
CN107004803A (en) Pressure equalization member, housing with film, battery list pond module and motor vehicle
JP2010506356A (en) Battery case cover
JP6136168B2 (en) Assembled battery
US9818995B2 (en) Battery pack system
EP3916866A1 (en) Battery pack
JP4822760B2 (en) Power supply
JP5929670B2 (en) Battery module and battery pack
JP2012084297A (en) Battery pack device
JP2011204577A (en) Battery pack
US20230327278A1 (en) Battery pack with improved gas venting path
ITTO20050246A1 (en) COVER FOR BATTERIES AND BATTERY INCLUDING SUCH LID
JP5159077B2 (en) Fuel cell
WO2022256728A1 (en) Battery pack thermal chimney
JP2019175720A (en) Fuel cell system
JP2011070905A (en) Lead acid battery

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20120720

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20131015

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20131022

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131217

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A821

Effective date: 20131218

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140304