JP2013196858A - Power storage device - Google Patents

Power storage device Download PDF

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JP2013196858A
JP2013196858A JP2012060817A JP2012060817A JP2013196858A JP 2013196858 A JP2013196858 A JP 2013196858A JP 2012060817 A JP2012060817 A JP 2012060817A JP 2012060817 A JP2012060817 A JP 2012060817A JP 2013196858 A JP2013196858 A JP 2013196858A
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panel
battery
housing
frame
box
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JP6089267B2 (en
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Atsushi Nakamoto
篤志 中本
Keizo Nishikawa
慶三 西川
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Panasonic Corp
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Panasonic 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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  • Gas Exhaust Devices For Batteries (AREA)
  • Battery Mounting, Suspending (AREA)
  • Connection Of Batteries Or Terminals (AREA)

Abstract

PROBLEM TO BE SOLVED: To suppress occurrence of trouble in the case of submergence.SOLUTION: The power storage device includes a box body (front and rear, right and left, and lower panels 30-34) having an opening at the top, and a lid body (upper panel 35) which closes the top opening of the box body, and the lid body has one end supported rotatably on the box body and the other end removably engaged with the box body. Consequently, when the atmospheric pressure in a housing rises owing to submergence, the other end (rear end) of the lid body (upper panel 35) is unlocked and the lid body rotates around the one end (front end) as a fulcrum to open the top opening of the box body. Consequently, the atmospheric pressure in the box body drops, so occurrence of trouble such as breakage of the housing can be suppressed.

Description

本発明は、筐体内に蓄電池を内蔵した蓄電装置に関する。   The present invention relates to a power storage device in which a storage battery is built in a housing.

近年、太陽光発電システムの普及や非常時の電力確保を目的として、筐体内に蓄電池を内蔵した蓄電装置が普及してきている。例えば、特許文献１には、多数の蓄電池が筐体内に収納された蓄電装置が記載されている。あるいは、金属製の蓄電池収納箱に多数の鉛蓄電池を収納したものも提案されている(特許文献２参照)。   In recent years, power storage devices with a built-in storage battery in a housing have become widespread for the purpose of popularizing solar power generation systems and securing power in an emergency. For example, Patent Document 1 describes a power storage device in which a large number of storage batteries are housed in a housing. Or what stored many lead storage batteries in metal storage battery storage boxes is also proposed (refer to patent documents 2).

特開２０１１−２４９０８１号公報JP 2011-249081 A 特開２００３−３３１８０４号公報JP 2003-331804 A

ところで、大雨や河川の氾濫などが原因で家屋が浸水し、蓄電装置が水没してしまった場合、蓄電池の放電によって水が電気分解されて水素ガスが発生することがある。通常であれば、発生した水素ガスは筐体の外へ排気されるのであるが、筐体が水没している場合、十分に排気されずに筐体内に溜まってしまう。そして、筐体内に溜まる水素の量が増えるにつれて筐体内の気圧(内圧)が上昇し、最終的に筐体が破壊されてしまう可能性がある。   By the way, when a house is flooded due to heavy rain or river flooding and the power storage device is submerged, water may be electrolyzed by the discharge of the storage battery to generate hydrogen gas. Normally, the generated hydrogen gas is exhausted to the outside of the casing. However, when the casing is submerged, it is not exhausted sufficiently and accumulates in the casing. Then, as the amount of hydrogen accumulated in the casing increases, the atmospheric pressure (internal pressure) in the casing increases, and the casing may eventually be destroyed.

本発明は、上記課題に鑑みて為されたものであり、水没時の不具合の発生を抑制することを目的とする。   This invention is made | formed in view of the said subject, and it aims at suppressing generation | occurrence | production of the malfunction at the time of submergence.

本発明の蓄電装置は、１乃至複数の蓄電池と、前記蓄電池を内部に収納する筐体とを備え、前記筐体は、上面が開口した箱体と、前記箱体の上面開口を塞ぐ蓋体とを有し、前記蓋体は、一端部が前記箱体に回動可能に支持され、他端部が前記箱体に係脱可能に係止されることを特徴とする。   The power storage device of the present invention includes one or a plurality of storage batteries and a housing that houses the storage batteries, and the housing includes a box having an upper surface opened and a lid that closes the upper surface opening of the box. One end of the lid is rotatably supported by the box, and the other end is removably locked to the box.

この蓄電装置において、絶縁性及び弾性を有する材料で形成され、前記蓄電池に着脱自在に取り付けられて前記蓄電池の電極を覆う保護部材を備えることが好ましい。   In this power storage device, it is preferable that the power storage device includes a protective member that is formed of an insulating and elastic material and is detachably attached to the storage battery and covers the electrode of the storage battery.

本発明の蓄電装置は、上面が開口した箱体と、箱体の上面開口を塞ぐ蓋体とを有し、蓋体は、一端部が箱体に回動可能に支持され、他端部が箱体に係脱可能に係止されている。そのため、水没によって筐体内の気圧が上昇した場合、蓋体の他端部の係止が外れ、一端部を支点として蓋体が回動することによって箱体の上面開口が開放される。その結果、箱体内の気圧が低下するので、筐体の破壊などの不具合の発生を抑制することができるという効果がある。   The power storage device of the present invention has a box body whose upper surface is opened and a lid body that closes the upper surface opening of the box body, and the lid body is rotatably supported at one end portion by the box body, and the other end portion thereof. The box is detachably locked. Therefore, when the atmospheric pressure in the housing rises due to submergence, the other end of the lid is unlocked, and the upper surface of the box is opened by rotating the lid with the one end as a fulcrum. As a result, since the atmospheric pressure in the box is reduced, it is possible to suppress the occurrence of problems such as destruction of the housing.

本発明に係る蓄電装置の実施形態を示し、(ａ)は前側パネルと上側パネルを示す一部省略した断面図、(ｂ)は上側パネルが上方向に回動した状態を示す一部省略した側面図である。1 shows an embodiment of a power storage device according to the present invention, (a) is a partially omitted cross-sectional view showing a front panel and an upper panel, and (b) is partially omitted showing a state in which the upper panel is rotated upward. It is a side view. 同上の斜視図である。It is a perspective view same as the above. 同上を示し、(ａ)は正面図、(ｂ)は右側面図である。The same as above, (a) is a front view and (b) is a right side view. 同上の前側パネルと上側パネルを示す下面図である。It is a bottom view which shows the front panel and upper panel same as the above. 同上を示し、全てのパネルを取り外した状態の正面図である。It is a front view of the state which showed the same and removed all the panels. 同上を示し、全てのパネルを取り外した状態の背面図である。It is a rear view of the state which showed the same and removed all the panels. 同上を示し、全てのパネルを取り外した状態の斜視図である。It is a perspective view of the state which showed the same and removed all the panels. (ａ)〜(ｃ)は同上の組立手順を説明するための説明図である。(a)-(c) is explanatory drawing for demonstrating an assembly procedure same as the above. 同上における電池モジュールの斜視図である。It is a perspective view of the battery module in the same as the above. 同上における電池モジュールの分解斜視図である。It is a disassembled perspective view of the battery module same as the above. 同上におけるスペーサを示し、(ａ)は正面図、(ｂ)は右側面図である。The spacer in the same as above is shown, (a) is a front view, and (b) is a right side view. 同上における連結部材を示し、(ａ)は斜視図、(ｂ)はプレートの正面図、(ｃ)はプレートの下面図である。The connection member in the same as above is shown, (a) is a perspective view, (b) is a front view of the plate, and (c) is a bottom view of the plate. 同上における電池モジュールと連結部材と排気ダクトを示し、(ａ)は側面図、(ｂ)は下面図である。The battery module, connecting member, and exhaust duct in the same as above are shown, (a) is a side view, and (b) is a bottom view. (ａ)は同上の一部省略した斜視図、(ｂ)は同上の一部省略した上面図である。(a) is a perspective view with a part omitted, and (b) is a top view with a part omitted.

以下、図面を参照して本発明に係る蓄電装置の実施形態を詳細に説明する。ただし、以下の説明では図２において前後左右上下の各方向を規定している。   Hereinafter, embodiments of a power storage device according to the present invention will be described in detail with reference to the drawings. However, in the following description, the front, rear, left, right, and up and down directions are defined in FIG.

本実施形態の蓄電装置は、図２〜図８に示すように複数(図示例では４つ)の電池モジュール１と、電池モジュール１を保持する保持体(ハウジング２)とを備える。   As shown in FIGS. 2 to 8, the power storage device of the present embodiment includes a plurality (four in the illustrated example) of battery modules 1 and a holding body (housing 2) that holds the battery modules 1.

電池モジュール１は、図９及び図10に示すように電池パック10と、電池パック10を内部に収納するケース11とで構成される。電池パック10は、図示しない多数の円筒型リチウムイオン電池セル(以下、電池セルと略す。)が合成樹脂製の筐体内に収納されて構成されている。複数の電池セルが並列に接続されて組電池が構成され、さらに複数の組電池が直列に接続されている。また、電池パック10の筐体には正極及び負極の端子部10A，10Bが設けられ、筐体内で直列接続された組電池の両極とそれぞれ接続されている。   As shown in FIGS. 9 and 10, the battery module 1 includes a battery pack 10 and a case 11 that houses the battery pack 10 therein. The battery pack 10 includes a large number of cylindrical lithium ion battery cells (hereinafter abbreviated as battery cells) (not shown) housed in a synthetic resin casing. A plurality of battery cells are connected in parallel to form a battery pack, and a plurality of battery packs are connected in series. The casing of the battery pack 10 is provided with positive and negative terminal portions 10A and 10B, which are respectively connected to both electrodes of the assembled battery connected in series within the casing.

ここで、電池セル内での内部短絡等による発熱でガスが発生し、電池セルの安全弁が作動して高温のガスが電池セルの外に放出された場合、周辺の電池セルが高温のガスに曝されると、正常な電池セルにまで影響を与え、連鎖的な劣化を引き起こす虞がある。そのため、電池パック10の筐体には、上記ガスを筐体の外に放出させるための貫通孔(放出口)10Cが前後両面の下部に開口されている(図10参照)。   Here, when gas is generated due to heat generation due to internal short circuit in the battery cell, and the safety valve of the battery cell is activated and high temperature gas is released outside the battery cell, the surrounding battery cell becomes hot gas. When exposed, it may affect normal battery cells and cause chain degradation. Therefore, the casing of the battery pack 10 has through holes (release ports) 10C for releasing the gas out of the casing at the lower portions of the front and rear surfaces (see FIG. 10).

ケース11は、縦横(上下左右)の長さ寸法に対して厚み寸法(前後方向の長さ寸法)が小さい扁平な箱状であって縦横の面(前面)が開口したケース本体12と、ケース本体12の開口面を塞ぐケース蓋13とで構成される。ケース本体12の長手方向の一端部には、電池パック10に設けられた一対の端子部10A，10Bを露出させる溝12Bが設けられている。一方、ケース蓋13の長手方向の一端部にも、一対の端子部10A，10Bを露出させる溝13Aが設けられている。また、ケース本体12内には、電池パック10の電池電圧や温度などを検出するセンサが収納されている。さらに、ケース本体12の一端部における溝12Bの間から信号ケーブル19が引き出されており(図８参照)、センサから出力される検出信号が、信号ケーブル19を介して、後述する制御ユニット６に入力される。   The case 11 is a flat box shape having a thickness dimension (length dimension in the front-rear direction) smaller than the length dimension in the vertical and horizontal directions (up and down, left and right), and the case main body 12 with the vertical and horizontal surfaces (front surface) opened, and the case The case lid 13 is configured to close the opening surface of the main body 12. A groove 12B that exposes a pair of terminal portions 10A and 10B provided in the battery pack 10 is provided at one end of the case body 12 in the longitudinal direction. On the other hand, a groove 13A that exposes the pair of terminal portions 10A and 10B is also provided at one end of the case lid 13 in the longitudinal direction. Further, a sensor for detecting the battery voltage, temperature, etc. of the battery pack 10 is housed in the case body 12. Further, a signal cable 19 is drawn from between the grooves 12B at one end of the case body 12 (see FIG. 8), and a detection signal output from the sensor is transmitted to the control unit 6 described later via the signal cable 19. Entered.

ケース本体12の左右両側面に複数(図示例では６個)のボス部12Cがそれぞれ設けられ、ケース蓋13の左右両端におけるケース本体12のボス部12Cと重なる位置に複数(図示例では６つ)の突片13Bがそれぞれ設けられている。そして、電池パック10が収納されたケース本体12の前面開口にケース蓋13が被せられ、突片13Bを貫通する挿通孔13C及びボス部12Cを貫通する挿通孔12Dに挿通されるボルト(図示せず)にナット(図示せず)が締め付けられてケース11が組み立てられる(図９参照)。なお、ケース本体12とケース蓋13との接合部分がガスケットなどでシールされて密閉されることが好ましい。また、ケース本体12及びケース蓋13の下部には、それぞれ電池パック10の放出口10Cと連通する放出口12E，13Dが開口しており、電池パック10内で発生したガスがケース本体12及びケース蓋13の各放出口12E，13Dを通してケース11の外に放出される。   A plurality (six in the illustrated example) of boss portions 12C are respectively provided on both the left and right side surfaces of the case body 12, and a plurality (six in the illustrated example, six in the illustrated example) are overlapped with the boss portions 12C of the case body 12 at both left and right ends. ) Of projecting pieces 13B. Then, a case lid 13 is placed on the front opening of the case body 12 in which the battery pack 10 is stored, and bolts (not shown) are inserted into the insertion holes 13C that penetrate the protruding pieces 13B and the insertion holes 12D that penetrate the boss portion 12C. 9), a nut (not shown) is tightened to assemble the case 11 (see FIG. 9). It is preferable that the joint portion between the case main body 12 and the case lid 13 is sealed with a gasket or the like and sealed. Further, discharge ports 12E and 13D communicating with the discharge port 10C of the battery pack 10 are opened at the lower part of the case body 12 and the case lid 13, respectively, and the gas generated in the battery pack 10 is generated by the case main body 12 and the case lid. It is discharged out of the case 11 through the discharge ports 12E and 13D of the lid 13.

ハウジング２は、複数のフレームからなるフレームブロックと、複数枚のパネルからなる筐体とで構成される。フレームブロックは、何れも金属製の後側フレーム20及び前側フレーム21、左側フレーム22、右側フレーム23、支持部24で構成される(図５〜図７参照)。また筐体は、何れも金属製の後側パネル30及び前側パネル31、左側パネル32、右側パネル33、下側パネル34、上側パネル35で構成される(図２及び図３参照)。   The housing 2 includes a frame block made up of a plurality of frames and a housing made up of a plurality of panels. Each of the frame blocks includes a metal rear frame 20, a front frame 21, a left frame 22, a right frame 23, and a support 24 (see FIGS. 5 to 7). The housing is composed of a metal rear panel 30, a front panel 31, a left panel 32, a right panel 33, a lower panel 34, and an upper panel 35 (see FIGS. 2 and 3).

前側フレーム21は、矩形の枠部210と、枠部210のほぼ中央に設けられた縦桟211と、枠部210の上下方向に沿って並設された２つの横桟212とを有する。左側フレーム22及び右側フレーム23は、何れも矩形の金属板からなり、前後方向に沿った両端が曲げ起こされることで角樋状に形成され、後述するように長手方向の両端が後側フレーム20の枠部200と前側フレーム21の枠部210にそれぞれねじ止めされる。   The front frame 21 includes a rectangular frame portion 210, a vertical beam 211 provided substantially at the center of the frame portion 210, and two horizontal beams 212 arranged in parallel along the vertical direction of the frame portion 210. Each of the left frame 22 and the right frame 23 is made of a rectangular metal plate and is formed in a square hook shape by bending both ends along the front-rear direction, and both ends in the longitudinal direction are formed on the rear frame 20 as will be described later. The frame portion 200 and the frame portion 210 of the front frame 21 are respectively screwed.

左側フレーム22及び右側フレーム23の後端部が後側フレーム20の枠部200にねじ止めされ、左側フレーム22及び右側フレーム23の前端部と支持部24の前端部に前側フレーム21の枠部210がねじ止めされる。ここで、右側の列の電池モジュール１と、右側フレーム23で連結された後側フレーム20及び前側フレーム21の各枠部200，210の右側の枠との間にスペースが形成されており、このスペースに電池モジュール１を制御する制御ユニット６が配設される(図５〜図７参照)。この制御ユニット６は、信号ケーブル19を介してセンサの検出信号を受け取り、各電池パック10の蓄電状態や故障の有無を監視するものである。ただし、このような制御ユニット６は従来周知であるから詳細な構成や動作の説明は省略する。   The rear end portions of the left frame 22 and the right frame 23 are screwed to the frame portion 200 of the rear frame 20, and the frame portion 210 of the front frame 21 is connected to the front end portions of the left frame 22 and the right frame 23 and the front end portion of the support portion 24. Is screwed. Here, a space is formed between the battery modules 1 in the right column and the right frames of the frame portions 200 and 210 of the rear frame 20 and the front frame 21 connected by the right frame 23. A control unit 6 for controlling the battery module 1 is disposed in the space (see FIGS. 5 to 7). The control unit 6 receives a sensor detection signal via the signal cable 19 and monitors the storage state of each battery pack 10 and the presence or absence of a failure. However, since such a control unit 6 is well known in the art, a detailed description of the configuration and operation is omitted.

また、前列の２つの電池モジュール１と前側フレーム21との間にスペースが形成されており、このスペースに２つの排気ダクト７が左右に並べて配設される。排気ダクト７は、事故などで電池モジュール１に内部短絡が生じた場合に電池モジュール１から放出される高温のガスを安全な温度まで冷却する機能を担うものである。   Further, a space is formed between the two battery modules 1 in the front row and the front frame 21, and the two exhaust ducts 7 are arranged side by side in this space. The exhaust duct 7 has a function of cooling a high-temperature gas released from the battery module 1 to a safe temperature when an internal short circuit occurs in the battery module 1 due to an accident or the like.

本実施形態における排気ダクト７は、金属材料によって扁平な矩形箱状に形成され、電池モジュール１に対向する後面の下部に、電池モジュール１の放出口13Dと連通する導入口(図示せず)が開口し、前面の上部に放出口70が開口する。そして、後列の電池モジュール１の放出口12Eがキャップ14で閉塞され(図６参照)、後列の電池モジュール１の放出口13Dと前列の電池モジュール１の放出口12Eが連結部材15で連結される。さらに、前列の電池モジュール１の放出口13Dと排気ダクト７の導入口とが、同じく連結部材15で連結される(図13参照)。   The exhaust duct 7 in the present embodiment is formed in a flat rectangular box shape by a metal material, and an introduction port (not shown) communicating with the discharge port 13D of the battery module 1 is formed at the lower part of the rear surface facing the battery module 1. The discharge port 70 is opened at the top of the front surface. Then, the discharge port 12E of the battery module 1 in the rear row is closed by the cap 14 (see FIG. 6), and the discharge port 13D of the battery module 1 in the rear row and the discharge port 12E of the battery module 1 in the front row are connected by the connecting member 15. . Further, the discharge port 13D of the battery module 1 in the front row and the introduction port of the exhaust duct 7 are similarly connected by the connecting member 15 (see FIG. 13).

連結部材15は、図12に示すように金属製のプレート150と、合成ゴムなどの弾性材料からなる一対のパッキン151とで構成される。プレート150は、長尺の矩形平板状であって、長手方向の両端部に矩形の貫通孔150Aが貫通している(図12(ｂ)参照)。また、各貫通孔150Aの周縁には、同一方向(図12(ｃ)における上方向)に立ち上がる複数の保持片150Bが設けられている。そして、矩形枠状に形成されたパッキン151が、複数の保持片150Bに引っ掛けられるようにして、プレート150に取り付けられる。さらに、各貫通孔150Aの周縁には、保持片150Bと反対方向(図12(ｃ)における下方向)に立ち上がる係止片150Cが設けられている。そして、一対の係止片150Cが電池モジュール１における放出口13Dの周縁に係止されることにより、連結部材15が電池モジュール１に取り付けられる。つまり、連結部材15の貫通孔150A及びパッキン151を介して、後列の電池モジュール１の放出口13Dと前列の電池モジュール１の放出口12E、並びに前列の電池モジュール１の放出口13Dと排気ダクト７の導入口とが気密に連結される(図８及び図13参照)。   As shown in FIG. 12, the connecting member 15 includes a metal plate 150 and a pair of packings 151 made of an elastic material such as synthetic rubber. The plate 150 is a long rectangular flat plate, and a rectangular through hole 150A passes through both ends in the longitudinal direction (see FIG. 12B). Further, a plurality of holding pieces 150B rising in the same direction (upward in FIG. 12C) are provided on the periphery of each through-hole 150A. The packing 151 formed in a rectangular frame shape is attached to the plate 150 so as to be hooked on the plurality of holding pieces 150B. Further, a locking piece 150C that rises in the opposite direction to the holding piece 150B (downward in FIG. 12C) is provided at the periphery of each through-hole 150A. The connecting member 15 is attached to the battery module 1 by the pair of locking pieces 150 </ b> C being locked to the periphery of the discharge port 13 </ b> D in the battery module 1. That is, the discharge port 13D of the battery module 1 in the rear row, the discharge port 12E of the battery module 1 in the front row, and the discharge port 13D of the battery module 1 in the front row and the exhaust duct 7 through the through-hole 150A and the packing 151 of the connecting member 15. The inlet is connected in an airtight manner (see FIGS. 8 and 13).

而して、電池モジュール１の放出口13Dから放出される高温のガスが貫通孔150A及びパッキン151を介して導入口より排気ダクト７内に導入され、排気ダクト７内を移動する間に外気との熱交換で冷却されるため、放出口70からは低温のガスが放出されることになる。なお、排気ダクト７の放出口70から放出される低温のガスは、各パネル30〜35間の隙間から筐体の外に放出される。   Thus, high-temperature gas discharged from the discharge port 13D of the battery module 1 is introduced into the exhaust duct 7 through the through-hole 150A and the packing 151 from the introduction port, and outside air is moved while moving in the exhaust duct 7. Therefore, low temperature gas is emitted from the discharge port 70. In addition, the low temperature gas discharge | released from the discharge port 70 of the exhaust duct 7 is discharge | released out of a housing | casing from the clearance gap between each panel 30-35.

ここで、前後に並ぶ２つの電池モジュール１の間にスペーサ16が配置されている(図８及び図13参照)。スペーサ16は、図11に示すように、連結部材15のプレート150と同じ厚み寸法を有する金属板によって長尺の略矩形状に形成されている。スペーサ16の長手方向に沿った一端側に、略台形状の複数の凹部160が設けられている。また、スペーサ16の表面(図11(ｂ)における左面)の一端部に円柱状の突起161が設けられ、スペーサ16の裏面(図11(ｂ)における右面)の中央部及び中央部より他端側にそれぞれ円柱状の突起162が設けられている。すなわち、スペーサ16は、それぞれの突起161，162が電池モジュール１の挿通孔12Dに嵌合されることで電池モジュール１の左右両側に位置決めして取り付けられる。   Here, a spacer 16 is disposed between the two battery modules 1 arranged in the front-rear direction (see FIGS. 8 and 13). As shown in FIG. 11, the spacer 16 is formed in a long and substantially rectangular shape by a metal plate having the same thickness as the plate 150 of the connecting member 15. A plurality of substantially trapezoidal concave portions 160 are provided on one end side along the longitudinal direction of the spacer 16. Also, a columnar protrusion 161 is provided at one end of the surface of the spacer 16 (left surface in FIG. 11B), and the other end from the center and the center of the back surface of the spacer 16 (right surface in FIG. 11B) A cylindrical protrusion 162 is provided on each side. That is, the spacer 16 is positioned and attached to the left and right sides of the battery module 1 by fitting the protrusions 161 and 162 into the insertion holes 12D of the battery module 1.

而して、前後に並ぶ２つの電池モジュール１の間の距離がスペーサ16によって一定に保たれるので、連結部材15のパッキン151が必要以上に圧縮されたり、あるいはパッキン151の圧縮が足りずに隙間が生じることなどが抑制できる。しかも、スペーサ16に位置決め用の突起161，162が設けられているので、フレームブロックに対して電池モジュール１を組み付ける際の作業性の向上が図れるという利点がある。   Thus, since the distance between the two battery modules 1 arranged in the front-rear direction is kept constant by the spacer 16, the packing 151 of the connecting member 15 is compressed more than necessary, or the packing 151 is not compressed enough. Generation of a gap can be suppressed. In addition, since the positioning protrusions 161 and 162 are provided on the spacer 16, there is an advantage that workability when the battery module 1 is assembled to the frame block can be improved.

後側パネル30及び前側パネル31は、長方形の金属板における上端及び左右両端が曲げ起こされて構成されている。左側パネル32及び右側パネル33は、短冊状の主部320，330と、主部320，330の上端に連結された略半円筒形の凹部321，331と、凹部321，331の上端に連結された鈎形の角部322，332とを有している。下側パネル34は、長方形の金属板が全周に亘って曲げ起こされて構成されている。また、下側パネル34には上向きに突出する円錐台形状の突部が２つ設けられており、各突部の底面にねじ挿通孔が穿孔されている。上側パネル35は、長方形の金属板における前端及び後端がそれぞれ曲げ加工されて構成されている。   The rear panel 30 and the front panel 31 are configured by bending up an upper end and left and right ends of a rectangular metal plate. The left panel 32 and the right panel 33 are connected to strip-shaped main portions 320 and 330, substantially semi-cylindrical concave portions 321 and 331 connected to the upper ends of the main portions 320 and 330, and upper ends of the concave portions 321 and 331. And a bowl-shaped corner 322,332. The lower panel 34 is configured by bending up a rectangular metal plate over the entire circumference. The lower panel 34 is provided with two frustoconical protrusions protruding upward, and screw insertion holes are drilled in the bottom surface of each protrusion. The upper panel 35 is configured by bending a front end and a rear end of a rectangular metal plate.

また、ハウジング２内において電池モジュール１が収納される収納空間と施工空間を隔絶する配線部カバー５がフレームブロックに取り付けられる。配線部カバー５は、各電池モジュール１の端子部10A，10Bと電線17との結線作業が完了した後、後側フレーム20及び前側フレーム21にねじ止めされる。ただし、電池モジュール１の端子部10A，10Bに接続された電線17は、配線部カバー５に設けられる挿通孔(図示せず)に挿通されて配線部カバー５で隔絶される収納空間の外に引き出される。   In addition, a wiring portion cover 5 that separates the storage space in which the battery module 1 is stored in the housing 2 from the construction space is attached to the frame block. The wiring portion cover 5 is screwed to the rear frame 20 and the front frame 21 after the connection work between the terminal portions 10A and 10B of each battery module 1 and the electric wire 17 is completed. However, the electric wires 17 connected to the terminal portions 10 </ b> A and 10 </ b> B of the battery module 1 are inserted into insertion holes (not shown) provided in the wiring portion cover 5 and outside the storage space isolated by the wiring portion cover 5. Pulled out.

ここで、図14に示すように、電池モジュール１の上面には、絶縁性及び弾性を有する材料で形成された保護部材９が着脱自在に取り付けられる。この保護部材９は、電池モジュール１の端子部10A，10Bを覆うことにより、人が端子部10A，10Bに触れて感電したり、端子部10A，10B同士が短絡するといった事故の発生を防ぐものである。また、保護部材９は、電池モジュール１のケース本体12上面におけるケース蓋13との隙間に端部が差し込まれることで電池モジュール１に着脱自在に取り付けられる(図14(ｂ)参照)。   Here, as shown in FIG. 14, a protection member 9 made of a material having insulation and elasticity is detachably attached to the upper surface of the battery module 1. The protective member 9 covers the terminal portions 10A and 10B of the battery module 1 so as to prevent accidents such as a person touching the terminal portions 10A and 10B to get an electric shock or a short circuit between the terminal portions 10A and 10B. It is. Further, the protective member 9 is detachably attached to the battery module 1 by inserting an end portion into a gap with the case lid 13 on the upper surface of the case body 12 of the battery module 1 (see FIG. 14B).

一方、収納空間の外に引き出された電線17は、後側フレーム20の両突片203間に配設された取付板205に取り付けられる開閉器８の片側の端子に接続される。さらに開閉器８のもう片側の端子に電線(図示せず)を介して端子台18が接続される(図５参照)。端子台18も取付板205に取り付けられている。開閉器８は、ハンドル80の操作により、外部から引き込まれて端子台18に接続される電線と各電池モジュール１の端子部10A，10Bとを繋ぐ電路を開閉する。そして、開閉器８及び端子台18と電線との結線作業が終了すれば、箱形に形成されたセパレータ53が配線部カバー５に取り付けられ、開閉器８と端子台18の一部(外部から引き込まれた電線と接続される端子を除く部分)がセパレータ53で覆われる(図７参照)。   On the other hand, the electric wire 17 drawn out of the storage space is connected to a terminal on one side of the switch 8 attached to a mounting plate 205 disposed between the two projecting pieces 203 of the rear frame 20. Further, a terminal block 18 is connected to the other terminal of the switch 8 via an electric wire (not shown) (see FIG. 5). The terminal block 18 is also attached to the mounting plate 205. The switch 8 opens and closes an electric circuit that connects the electric wire drawn from the outside and connected to the terminal block 18 and the terminal portions 10A and 10B of each battery module 1 by operating the handle 80. When the connection work between the switch 8 and the terminal block 18 and the electric wires is completed, a separator 53 formed in a box shape is attached to the wiring section cover 5, and a part of the switch 8 and the terminal block 18 (from the outside) A portion excluding a terminal connected to the drawn-in electric wire) is covered with a separator 53 (see FIG. 7).

次に、本発明の要旨である前側パネル31(箱体)及び上側パネル35(蓋体)の構造について、詳細に説明する。   Next, the structures of the front panel 31 (box body) and the upper panel 35 (lid body), which are the gist of the present invention, will be described in detail.

図１(ａ)及び図４に示すように、前側パネル31の周壁上部における左右方向の中央に、下向きに突出する係合片310が設けられている。一方、上側パネル35の前端部に下向きの段部350が形成され、段部350よりも前方の前端部分が鈎形に折り曲げられている(図１(ａ)参照)。また、上側パネル35の後端部にも下向きの段部351が形成され、後端における左右両端には、後方に突出する突片352がそれぞれ設けられている。ただし、段部351から突片352の後端までの距離d2は、段部350よりも前方の部分の寸法d1よりも短くなっている(図１(ａ)参照)。さらに、段部350の前方における左右方向の中央に、前側パネル31の係合片310と係合する係合孔353が貫通している。   As shown in FIGS. 1A and 4, an engagement piece 310 that protrudes downward is provided at the center in the left-right direction of the upper peripheral wall of the front panel 31. On the other hand, a downward stepped portion 350 is formed at the front end portion of the upper panel 35, and the front end portion in front of the stepped portion 350 is bent into a bowl shape (see FIG. 1A). Also, a downward stepped portion 351 is formed at the rear end portion of the upper panel 35, and projecting pieces 352 projecting rearward are provided at the left and right ends of the rear end, respectively. However, the distance d2 from the step portion 351 to the rear end of the protruding piece 352 is shorter than the dimension d1 of the portion in front of the step portion 350 (see FIG. 1A). Further, an engagement hole 353 that engages with the engagement piece 310 of the front panel 31 passes through the center of the front side of the step portion 350 in the left-right direction.

上側パネル35の係合孔353に係合片310が係合されるとともに、段部350より前方の部分が前側パネル31の周壁の下側に挿入され、段部351より後方の部分が後側パネル30の周壁の下側に挿入される。なお、上側パネル35は、左側パネル32の角部322の右端部及び右側パネル33の角部332の左端部によって下から支持される(図１(ａ)及び図２参照)。すなわち、上側パネル35は、左側パネル32と右側パネル33で下から支持され、後側パネル30と前側パネル31で上方の移動が規制されているが、後側パネル30、前側パネル31、左側パネル32、右側パネル33の何れにも固定されていない。   The engagement piece 310 is engaged with the engagement hole 353 of the upper panel 35, the front part from the step part 350 is inserted below the peripheral wall of the front panel 31, and the rear part from the step part 351 is the rear side. The panel 30 is inserted below the peripheral wall. The upper panel 35 is supported from below by the right end of the corner 322 of the left panel 32 and the left end of the corner 332 of the right panel 33 (see FIGS. 1A and 2). That is, the upper panel 35 is supported from below by the left panel 32 and the right panel 33, and upward movement is restricted by the rear panel 30 and the front panel 31, but the rear panel 30, the front panel 31, and the left panel 32 and the right side panel 33 are not fixed.

ここで、従来技術で説明したように、蓄電装置が水没し、電池モジュール１の放電によって水が電気分解されて水素ガスが発生し、筐体(ハウジング２)内の気圧が上昇した場合を想定する。後側パネル30、前側パネル31、左側パネル32、右側パネル33、下側パネル34は何れもフレームブロックにねじ止めされているが、上側パネル35のみはねじ止めされていない。したがって、水素ガスによって筐体内の気圧が上昇するにつれて上側パネル35が撓み、やがて、段部351より後方の部分が後側パネル30の周壁を乗り越えてしまう。このとき、段部350より前方の部分と前側パネル31の周壁との係り代(d1)の方が、段部351より後方の部分と後側パネル30の周壁との係り代(d1)よりも大きいため、先に段部351より後方の部分が後側パネル30の周壁を乗り越えてしまうことになる。   Here, as described in the related art, it is assumed that the power storage device is submerged, the water is electrolyzed by the discharge of the battery module 1 to generate hydrogen gas, and the atmospheric pressure in the housing (housing 2) increases. To do. The rear panel 30, the front panel 31, the left panel 32, the right panel 33, and the lower panel 34 are all screwed to the frame block, but only the upper panel 35 is not screwed. Accordingly, the upper panel 35 bends as the atmospheric pressure in the housing increases due to the hydrogen gas, and eventually the portion behind the step portion 351 gets over the peripheral wall of the rear panel 30. At this time, the engagement allowance (d1) between the portion in front of the step portion 350 and the peripheral wall of the front panel 31 is greater than the engagement allowance (d1) between the portion behind the step portion 351 and the peripheral wall of the rear panel 30. Because of the large size, the portion behind the step portion 351 first gets over the peripheral wall of the rear panel 30.

そして、段部351より後方の部分が後側パネル30の周壁を乗り越えると、筐体内に溜まった水素ガスが放出されて筐体内の気圧が急激に低下する。このとき、前側パネル31の係合片310が上側パネル35の係合孔353に係合しているため、放出される水素ガスの圧力を受けた上側パネル35は、係合片310を支点にして回動する(図１(ｂ)参照)。その結果、上側パネル35が水素ガスの圧力で吹き飛ばされることが防止できる。   When the portion behind the step portion 351 gets over the peripheral wall of the rear panel 30, the hydrogen gas accumulated in the casing is released, and the atmospheric pressure in the casing rapidly decreases. At this time, since the engagement piece 310 of the front panel 31 is engaged with the engagement hole 353 of the upper panel 35, the upper panel 35 receiving the pressure of the released hydrogen gas uses the engagement piece 310 as a fulcrum. (See FIG. 1B). As a result, the upper panel 35 can be prevented from being blown off by the pressure of hydrogen gas.

上述のように本実施形態は、上面が開口した箱体(前後左右及び下側の各パネル30〜34)と、箱体の上面開口を塞ぐ蓋体(上側パネル35)とを有し、蓋体は、一端部が箱体に回動可能に支持され、他端部が箱体に係脱可能に係止されている。そのため、水没によって筐体内の気圧が上昇した場合、蓋体(上側パネル35)の他端部(後端部)の係止が外れ、一端部(前端部)を支点として蓋体が回動することによって箱体の上面開口が開放される。その結果、箱体内の気圧が低下するので、筐体の破壊などの不具合の発生を抑制することができる。   As described above, the present embodiment has a box body (front and rear, left, right, and lower panels 30 to 34) having an open top surface, and a lid body (upper panel 35) that closes the top surface opening of the box body. One end of the body is rotatably supported by the box, and the other end is removably locked to the box. Therefore, when the atmospheric pressure in the housing rises due to submergence, the other end (rear end) of the lid (upper panel 35) is unlocked, and the lid rotates around one end (front end) as a fulcrum. As a result, the upper surface opening of the box is opened. As a result, since the atmospheric pressure in the box is reduced, it is possible to suppress the occurrence of problems such as destruction of the housing.

１ 電池モジュール(蓄電池)
２ ハウジング(筐体)
31 前側パネル(箱体)
35 上側パネル(蓋体)
310 係合片
353 係合孔 1 Battery module (storage battery)
2 Housing (housing)
31 Front panel (box)
35 Upper panel (lid)
310 engagement piece
353 engagement hole

Claims (2)

１乃至複数の蓄電池と、前記蓄電池を内部に収納する筐体とを備え、前記筐体は、上面が開口した箱体と、前記箱体の上面開口を塞ぐ蓋体とを有し、前記蓋体は、一端部が前記箱体に回動可能に支持され、他端部が前記箱体に係脱可能に係止されることを特徴とする蓄電装置。   One or a plurality of storage batteries, and a housing for storing the storage batteries therein, the housing having a box with an upper surface opened and a lid for closing the upper surface opening of the box, One end of the body is rotatably supported by the box, and the other end is removably locked to the box. 絶縁性及び弾性を有する材料で形成され、前記蓄電池に着脱自在に取り付けられて前記蓄電池の電極を覆う保護部材を備えることを特徴とする請求項１記載の蓄電装置。   The power storage device according to claim 1, further comprising: a protective member that is formed of an insulating and elastic material, is detachably attached to the storage battery, and covers an electrode of the storage battery.
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JP2017098032A (en) * 2015-11-20 2017-06-01 パナソニックＩｐマネジメント株式会社 Storage board, power storage device and power storage system

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