JP2009032550A - Power supply device - Google Patents

Power supply device Download PDF

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JP2009032550A
JP2009032550A JP2007195832A JP2007195832A JP2009032550A JP 2009032550 A JP2009032550 A JP 2009032550A JP 2007195832 A JP2007195832 A JP 2007195832A JP 2007195832 A JP2007195832 A JP 2007195832A JP 2009032550 A JP2009032550 A JP 2009032550A
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battery
battery module
power supply
supply device
holder
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Kazuhiro Fujii
一広 藤井
Akira Matsumoto
明 松本
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Sanyo Electric Co Ltd
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Sanyo Electric Co Ltd
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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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  • Battery Mounting, Suspending (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To surely inhibit an electrolytic solution discharged from a battery from short-circuiting a battery module, and also prevent an adverse effect that the electrolytic solution corrodes electric parts or the like. <P>SOLUTION: The power supply device arranges a plurality of battery modules 2 in a battery holder 3 in a horizontal posture. The battery holder 3 has retaining hollow parts 11 to put the battery modules 2 into the inside and arrange them at a fixed position. Furthermore, in the battery holder 3, a liquid receiving gutter 10 of the electrolytic solution is installed between the end part of the battery module 2 and the inner face of the retaining hollow part 11, and the electrolytic solution discharged from the end part of the battery module 2 is to be stored in the liquid receiving gutter 10 of the retaining hollow part 11. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、主として車両に搭載されて自動車を走行させるモーターを駆動する電源装置に関し、特に電池の液漏れによる弊害を防止できる電源装置に関する。   The present invention relates to a power supply device that drives a motor that is mounted on a vehicle and drives an automobile, and more particularly to a power supply device that can prevent harmful effects caused by battery leakage.

電源装置は、バッテリが異常な状態で充放電されると電池の安全弁が開弁して電解液を排出する。電池から排出される電解液は、隣接する電池モジュールの出力端子を短絡することがある。とくに、上下多段に電池モジュールを配設している電源装置は、上段の電池モジュールから漏れた電解液が上下の電池モジュールの出力端子をショートさせることがある。この状態で電池モジュールをショートさせると、極めて大きな電流が流れて、電池を劣化させる。また、漏れた電解液は電気部品を腐食させる等の弊害もある。   When the battery is charged / discharged in an abnormal state, the battery safety valve is opened and the electrolyte is discharged. The electrolyte discharged from the battery may short-circuit the output terminals of adjacent battery modules. In particular, in a power supply apparatus in which battery modules are arranged in multiple upper and lower stages, the electrolyte solution leaking from the upper battery module may short-circuit the output terminals of the upper and lower battery modules. If the battery module is short-circuited in this state, a very large current flows and the battery is deteriorated. Moreover, the leaked electrolyte also has a harmful effect such as corrosion of electrical parts.

電解液の弊害を防止する技術は開発されている。（特許文献１ないし３参照）
特許文献１は、電池ケースに電池から漏れた電解液の反応阻止剤を充填するカプセルを内蔵している。この構造によると、反応阻止剤を充填するカプセルの製作コストが高くなる。とくに、多量に排出される電解液の反応を阻止するには、多量のカプセルを充填する必要があって、ケースが大きくなる欠点もある。 Techniques for preventing the harmful effects of electrolytes have been developed. (See Patent Documents 1 to 3)
In Patent Document 1, a capsule that fills a battery case with a reaction inhibitor of an electrolytic solution leaking from a battery is incorporated. According to this structure, the manufacturing cost of the capsule filled with the reaction inhibitor increases. In particular, in order to prevent the reaction of the electrolyte solution discharged in a large amount, it is necessary to fill a large amount of capsules, and there is a disadvantage that the case becomes large.

特許文献２と３は、ケース内に電解液吸収剤を収納している。この構造は、少量の電解液を吸収できる。しかしながら、電池から多量の電解液が排出されると速やかに吸収できない。このため、電解液が出力端子をショートさせる等の弊害を阻止できない。
特開平１０−１６６８９号公報 特開平１０−２４１６４６号公報 特開２００１−３５１５８８号公報 In Patent Documents 2 and 3, an electrolyte absorbent is accommodated in a case. This structure can absorb a small amount of electrolyte. However, when a large amount of electrolyte is discharged from the battery, it cannot be absorbed quickly. For this reason, it is impossible to prevent adverse effects such as the electrolyte solution shorting the output terminal.
Japanese Patent Laid-Open No. 10-16689 JP-A-10-241646 JP 2001-351588 A

以上のように、電解液を吸収し、あるいは反応阻止剤で酸化還元反応させて過反応を阻止する構造では、電解液による出力端子のショートを有効には防止できない。とくに、上下多段に電池ユニットを配設している電源装置において、上下の電池モジュールのショートを確実には阻止できない。   As described above, in a structure in which the electrolytic solution is absorbed or an oxidation-reduction reaction is performed with a reaction inhibitor to prevent overreaction, a short circuit of the output terminal due to the electrolytic solution cannot be effectively prevented. In particular, in a power supply device in which battery units are arranged in multiple upper and lower stages, a short circuit between the upper and lower battery modules cannot be reliably prevented.

本発明は、さらにこの欠点を解決することを目的に開発されたものである。本発明の重要な目的は、電池から排出される電解液が電池モジュールをショートさせるのを確実に阻止して、さらに電解液が電気部品等を腐食させる弊害をも防止できる電源装置を提供することにある。   The present invention has been developed for the purpose of solving this drawback. An important object of the present invention is to provide a power supply device that can reliably prevent the electrolyte discharged from the battery from short-circuiting the battery module and further prevent the electrolyte from corroding electrical components and the like. It is in.

本発明の電源装置は、前述の目的を達成するために以下の構成を備える。
電源装置は、複数本の電池モジュール２を水平な姿勢で電池ホルダ３に配置している。電池ホルダ３は、電池モジュール２を内側に入れて定位置に配置する保持中空部１１を有している。さらに、電池ホルダ３は、電池モジュール２の端部と保持中空部１１の内面との間に電解液の受液樋１０を設けており、電池モジュール２の端部から排出される電解液を保持中空部１１の受液樋１０に溜めるようにしている。 The power supply device of the present invention has the following configuration in order to achieve the above-described object.
The power supply device has a plurality of battery modules 2 arranged in a battery holder 3 in a horizontal posture. The battery holder 3 has a holding hollow portion 11 in which the battery module 2 is placed inside and disposed at a fixed position. Further, the battery holder 3 is provided with an electrolyte receiver 10 between the end of the battery module 2 and the inner surface of the holding hollow portion 11 to hold the electrolyte discharged from the end of the battery module 2. The liquid is received in the liquid receiving tank 10 of the hollow portion 11.

本発明の請求項２の電源装置は、電池ホルダ３が、電池モジュール２の表面と保持中空部１１の内面との間に隙間１２を設けており、さらに保持中空部１１には、電池モジュール２の端部の表面に接触する隔壁１５を内面に突出して設けており、この隔壁１５でもって、隙間１２を空気ダクト１３と受液樋１０とに区画している。   In the power supply device according to claim 2 of the present invention, the battery holder 3 is provided with a gap 12 between the surface of the battery module 2 and the inner surface of the holding hollow portion 11, and the holding hollow portion 11 further includes the battery module 2. A partition wall 15 in contact with the surface of the end portion is provided so as to protrude from the inner surface, and the partition wall 15 divides the gap 12 into an air duct 13 and a liquid receiving tank 10.

本発明の請求項３の電源装置は、電池ホルダ３が、電池モジュール２を上下多段に配設している。   In the power supply device according to claim 3 of the present invention, the battery holder 3 has the battery modules 2 arranged in multiple stages.

本発明の請求項４の電源装置は、電池モジュール２が、互いに直線状に連結されてなる複数の素電池３を備え、素電池３の表面を絶縁チューブ８で被覆している。   According to a fourth aspect of the present invention, the battery module 2 includes a plurality of unit cells 3 that are linearly connected to each other, and the surface of the unit cell 3 is covered with an insulating tube 8.

本発明の請求項５の電源装置は、電池モジュール２が円柱状で、電池ホルダ３の保持中空部１１を円柱状としている。   According to a fifth aspect of the present invention, the battery module 2 has a cylindrical shape, and the holding hollow portion 11 of the battery holder 3 has a cylindrical shape.

本発明の請求項６の電源装置は、電池ホルダ３が、保持中空部１１の下部に受液樋１０を設けている。   In the power supply device according to claim 6 of the present invention, the battery holder 3 is provided with the liquid receiving tank 10 at the lower part of the holding hollow portion 11.

本発明の電源装置は、電池から排出される電解液が電池モジュールをショートさせるのを確実に阻止できる特長がある。それは、本発明の電源装置が、複数本の電池モジュールを水平な姿勢で配置する電池ホルダに、電池モジュールを内側に入れて定位置に配置する保持中空部を設けて、この保持中空部の端部に電池モジュールの外周縁に沿うように電解液の受液樋を設けているからである。この構造の電池ホルダは、電池モジュールの端部から排出される電解液を保持中空部の受液樋に溜めて外部に排出せず、電池から漏れた電解液による弊害を有効に防止できる。とくに、この電池ホルダは、各々の電池モジュールを収納する保持中空部の端部に受液樋を設けるので、各々の電池モジュールから排出される電解液を外部に漏らすことなく、電池モジュールを入れている保持中空部の受液樋に溜めることができる。このため、電解液が保持中空部から漏れて隣接する電池モジュールを短絡させるのを確実に阻止できる。   The power supply device of the present invention has a feature that can reliably prevent the electrolyte discharged from the battery from short-circuiting the battery module. In the power supply device of the present invention, a holding hollow portion is provided in a battery holder in which a plurality of battery modules are arranged in a horizontal posture, and the battery module is placed in a fixed position, and an end of the holding hollow portion is provided. This is because an electrolyte receiver is provided along the outer peripheral edge of the battery module. The battery holder having this structure can effectively prevent the electrolyte solution discharged from the end of the battery module from being accumulated in the liquid receiving tank of the holding hollow portion and discharged to the outside, and the harmful effects caused by the electrolyte solution leaking from the battery can be effectively prevented. In particular, since this battery holder is provided with a liquid-receiving tank at the end of the holding hollow portion that houses each battery module, the battery module can be inserted without leaking the electrolyte discharged from each battery module to the outside. Can be stored in the liquid receiving tank of the holding hollow portion. For this reason, it can prevent reliably that electrolyte solution leaks from a holding | maintenance hollow part, and short-circuits the adjacent battery module.

さらに、本発明の電源装置は、各々の電池モジュールを収納している保持中空部に設けた受液樋に電解液を溜めて、電解液が保持中空部から排出されるのを防止するので、電池から漏れた電解液が電気部品等に接触してこれらの部品を腐食させるのも確実に阻止できる特長がある。   Furthermore, the power supply device of the present invention prevents the electrolyte from being discharged from the holding hollow part by accumulating the electrolytic solution in a liquid receiving tank provided in the holding hollow part that houses each battery module. There is an advantage that the electrolytic solution leaking from the battery can be reliably prevented from coming into contact with the electrical components and corroding these components.

以下、本発明の実施例を図面に基づいて説明する。ただし、以下に示す実施例は、本発明の技術思想を具体化するための電源装置を例示するものであって、本発明は電源装置を以下のものに特定しない。   Embodiments of the present invention will be described below with reference to the drawings. However, the embodiments described below exemplify a power supply device for embodying the technical idea of the present invention, and the present invention does not specify the power supply device as follows.

さらに、この明細書は、特許請求の範囲を理解しやすいように、実施例に示される部材に対応する番号を、「特許請求の範囲」および「課題を解決するための手段の欄」に示される部材に付記している。ただ、特許請求の範囲に示される部材を、実施例の部材に特定するものでは決してない。   Further, in this specification, for easy understanding of the scope of claims, numbers corresponding to the members shown in the embodiments are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

図１は車両用の電源装置の斜視図を示し、図２は電源装置の制御部２１を除いた斜視図、図３は外装ケース２０を除いた斜視図、図４は図３の電源装置を上下に切断した断面図、図５は図４の電源装置の電池モジュール２の端部を示す拡大断面図、図６は電池モジュール２の端部を収納する電池ホルダ３の要部を示す拡大斜視図、図７は電池モジュール２の斜視図を示している。   1 is a perspective view of a power supply device for a vehicle, FIG. 2 is a perspective view of the power supply device excluding a control unit 21, FIG. 3 is a perspective view of an exterior case 20, and FIG. 4 is a perspective view of the power supply device of FIG. FIG. 5 is an enlarged sectional view showing an end portion of the battery module 2 of the power supply device of FIG. 4, and FIG. 6 is an enlarged perspective view showing an essential part of the battery holder 3 that houses the end portion of the battery module 2. 7 and 7 show perspective views of the battery module 2. FIG.

図１に示す電源装置は、車両に搭載されて車両を走行させるモーターを駆動するのに使用される。図１ないし図４に示す電源装置は、上段の電池ユニット１と下段の電池ユニット１を、上下多段に積層している。上段の電池ユニット１は、電池モジュール２を２段に収納し、下段の電池ユニット１は電池モジュール２を３段に収納している。各々の電池ユニット１は、電池モジュール２を水平な姿勢で電池ホルダ３に配置している。   The power supply device shown in FIG. 1 is used to drive a motor that is mounted on a vehicle and runs the vehicle. The power supply device shown in FIGS. 1 to 4 has an upper battery unit 1 and a lower battery unit 1 stacked in multiple upper and lower stages. The upper battery unit 1 houses the battery modules 2 in two stages, and the lower battery unit 1 houses the battery modules 2 in three stages. Each battery unit 1 has a battery module 2 arranged in a battery holder 3 in a horizontal posture.

電池モジュール２は、複数の素電池４を直列に直線状に連結している。図７の電池モジュール２は４個の素電池４を直列に接続している。素電池４は、円筒型の充電できる電池である。ただ、電池モジュールは、３個以下、又は５個以上の素電池を直列に接続することもできる。また、素電池を角型電池とすることもできる。素電池４はニッケル−水素電池である。ただ、素電池は、リチウムイオン二次電池やニッケル−カドミウム電池等の充電できる全ての電池を使用することができる。電池モジュール２は、図５の拡大断面図に示すように、素電池４の間に接続体６を配設し、この接続体６を介して直列に直線状に連結される。電池モジュール２は、一方の素電池４の封口板と他方の素電池４の外装缶の底とを接続体６で接続している。接続体６は、金属板をプレス成形したもので、対向して配設される素電池４の電池端面に溶接して接続されて、素電池４を直列に電気接続する。   In the battery module 2, a plurality of unit cells 4 are linearly connected in series. The battery module 2 in FIG. 7 has four unit cells 4 connected in series. The unit cell 4 is a cylindrical battery that can be charged. However, the battery module can connect three or less unit cells, or five or more unit cells in series. The unit cell can also be a square battery. The unit cell 4 is a nickel-hydrogen battery. However, as the unit cell, any rechargeable battery such as a lithium ion secondary battery or a nickel-cadmium battery can be used. As shown in the enlarged cross-sectional view of FIG. 5, the battery module 2 includes a connection body 6 disposed between the unit cells 4, and is connected linearly in series via the connection body 6. In the battery module 2, the sealing plate of one unit cell 4 and the bottom of the outer can of the other unit cell 4 are connected by a connection body 6. The connection body 6 is formed by press-molding a metal plate, and is welded to and connected to the battery end face of the unit cell 4 disposed to face the unit cell 4 in series.

各々の電池モジュール２は、両端に出力端子５を溶接して固定している。凸部電極側にはプラス側の出力端子５Ａを、その反対側にある外装缶の底部にはナイマス側の出力端子５Ｂを固定している。電池モジュール２は、隣接する電池モジュール２の正負の出力端子５を交互に逆とする姿勢で、平行に配設される。この配列の電池モジュール２は、隣接する電池モジュール２の出力端子５をバスバー７で連結して、直列に接続される。各々の電池ユニット１は、出力端子５にバスバー７を連結して、電池ホルダ３に収納している全ての電池モジュール２を直列に接続している。また、上下に積層される電池ユニット１も直列に接続される。   Each battery module 2 is fixed by welding output terminals 5 at both ends. A plus-side output terminal 5A is fixed to the convex electrode side, and a nitrogen-side output terminal 5B is fixed to the bottom of the outer can on the opposite side. The battery modules 2 are arranged in parallel so that the positive and negative output terminals 5 of the adjacent battery modules 2 are alternately reversed. The battery modules 2 in this arrangement are connected in series by connecting the output terminals 5 of the adjacent battery modules 2 with a bus bar 7. Each battery unit 1 connects the bus bar 7 to the output terminal 5 and connects all the battery modules 2 housed in the battery holder 3 in series. Further, the battery units 1 stacked one above the other are also connected in series.

素電池４は、凸部電極側の封口板に安全弁（図示せず）を内蔵している。安全弁は、異常な状態で充放電されて内圧が異常に高くなると開弁する。安全弁が開弁すると、素電池４内のガスや電解液が排出される。図の電池モジュール２は、複数の素電池４を直線状に連結して、その表面を熱収縮チューブ等の絶縁チューブ８で被覆している。絶縁チューブ８は電解液を通過させない。このため、絶縁チューブ８内に排出される電解液は、素電池４と絶縁チューブ８との間を通過して電池モジュール２の端部から排出される。絶縁チューブ８は、電池モジュール２の外周面を被覆するが、両端面の全面を被覆しない。電池モジュール２は、両端面に電極を設けているので、この電極を絶縁チューブ８で被覆しない。電極にはバスバー７が接続されるからである。   The unit cell 4 has a safety valve (not shown) built in the sealing plate on the convex electrode side. The safety valve opens when the internal pressure becomes abnormally high due to charging / discharging in an abnormal state. When the safety valve is opened, the gas and electrolyte in the unit cell 4 are discharged. In the illustrated battery module 2, a plurality of unit cells 4 are connected in a straight line, and the surface thereof is covered with an insulating tube 8 such as a heat-shrinkable tube. The insulating tube 8 does not allow the electrolytic solution to pass through. For this reason, the electrolytic solution discharged into the insulating tube 8 passes between the unit cell 4 and the insulating tube 8 and is discharged from the end of the battery module 2. The insulating tube 8 covers the outer peripheral surface of the battery module 2 but does not cover the entire surface of both end surfaces. Since the battery module 2 is provided with electrodes on both end faces, the electrodes are not covered with the insulating tube 8. This is because the bus bar 7 is connected to the electrodes.

電池モジュール２の端部から排出される電解液は、隣接する電池モジュール２をショートさせる原因となる。とくに、上下に多段に配置され電池モジュール２は相当な電位差があるので、ここでショートすると大きなショート電流が流れる。ショート電流は、電池モジュール２に電気的なダメージを与えるばかりでなく、ショート経路に位置するセルのみ充電深度を低下させ、パック内の充電深度のばらつきを生じさせる。上下に配設される電池モジュール２に限らず、隣接して配置される電池モジュール２もバスバー７で接続されない端部に電圧差ができる。このため、同じ水平面内に配設される隣の電池モジュール２も電解液でショートすることがある。   The electrolyte discharged from the end of the battery module 2 causes a short circuit between the adjacent battery modules 2. In particular, since the battery modules 2 arranged in multiple stages above and below have a considerable potential difference, if a short circuit occurs here, a large short current flows. The short current not only causes electrical damage to the battery module 2, but also reduces the charge depth only for cells located in the short path, thereby causing variations in the charge depth within the pack. Not only the battery modules 2 arranged above and below, but also the battery modules 2 arranged adjacent to each other can have a voltage difference at the end portion not connected by the bus bar 7. For this reason, the adjacent battery module 2 arrange | positioned in the same horizontal surface may also short-circuit with electrolyte solution.

電解液による弊害を防止するために、電池ホルダ３は、漏れた電解液を蓄えて外部に漏らさない受液樋１０を有する。以下、受液樋１０のある電池ホルダ３を詳述する。   In order to prevent harmful effects caused by the electrolytic solution, the battery holder 3 has a liquid receiving bowl 10 that stores the leaked electrolytic solution and does not leak to the outside. Hereinafter, the battery holder 3 with the liquid receiver 10 will be described in detail.

電池ホルダ３は、プラスチックを成形して、上下のホルダー３Ａ、３Ｂに分割して制作される。上下のホルダー３Ａ、３Ｂは、電池モジュール２を収納して定位置に保持する保持中空部１１を設けている。上下のホルダー３Ａ、３Ｂは、保持中空部１１に電池モジュール２を配置し、これを連結して、電池モジュール２を上下に挟着して定位置に配置する。電池モジュール２を上下で挟着して定位置に配置するために、保持中空部１１の内面に突出して保持凸部（図示せず）を設けている。さらに、電池ホルダ３は、電池モジュール２の表面と保持中空部１１の内面との間に隙間１２を設けて、この隙間１２を空気ダクト１３としている。隙間１２を設けるために、保持中空部１１は、その内形を電池モジュール２の外形よりも大きくしている。保持中空部１１の内形と電池モジュール２の外形との差が隙間１２となる。隙間１２のある保持中空部１１は、電池モジュール２を定位置に配置できない。したがって、保持中空部１１の内面に突出して保持凸部を設け、この保持凸部を電池モジュール２の表面に押圧して、電池モジュール２を保持中空部１１の定位置に配置している。   The battery holder 3 is produced by molding plastic and dividing it into upper and lower holders 3A, 3B. The upper and lower holders 3 </ b> A and 3 </ b> B are provided with a holding hollow portion 11 that houses the battery module 2 and holds it in a fixed position. The upper and lower holders 3 </ b> A and 3 </ b> B arrange the battery module 2 in the holding hollow portion 11, connect them, and sandwich the battery module 2 in the vertical direction and arrange it at a fixed position. In order to sandwich the battery module 2 from above and below and to place it at a fixed position, a holding convex portion (not shown) is provided so as to protrude from the inner surface of the holding hollow portion 11. Further, the battery holder 3 is provided with a gap 12 between the surface of the battery module 2 and the inner surface of the holding hollow portion 11, and this gap 12 serves as an air duct 13. In order to provide the gap 12, the holding hollow portion 11 has an inner shape larger than the outer shape of the battery module 2. A difference between the inner shape of the holding hollow portion 11 and the outer shape of the battery module 2 is a gap 12. The holding hollow portion 11 with the gap 12 cannot place the battery module 2 in a fixed position. Therefore, a holding convex portion is provided so as to protrude from the inner surface of the holding hollow portion 11, and the holding convex portion is pressed against the surface of the battery module 2 so that the battery module 2 is disposed at a fixed position of the holding hollow portion 11.

図４の断面図に示す電池ホルダ３は、電池モジュール２を上下に多段に配置する。上下の電池モジュール２に空気を送風するために、上段の保持中空部１１の底に空気孔１４を開口している。空気は、この空気孔１４を通過して上下の空気ダクト１３に送風される。   In the battery holder 3 shown in the cross-sectional view of FIG. 4, the battery modules 2 are arranged in multiple stages up and down. In order to blow air to the upper and lower battery modules 2, an air hole 14 is opened at the bottom of the upper holding hollow portion 11. The air passes through the air holes 14 and is blown to the upper and lower air ducts 13.

図５と図６に示すように、電池ホルダ３は、電池モジュール２の端部、すなわち保持中空部１１の端部に、電池モジュール２から漏れた電解液を蓄える受液樋１０を設けている。受液樋１０は、電池モジュール２の表面と保持中空部１１の内面との間に設けられて、電池モジュール２の端部から排出される電解液を蓄える。これ等の図に示す電池ホルダ３は、電池モジュール２の端部の表面に接触する隔壁１５を保持中空部１１の内面に突出して設けている。この隔壁１５は、電池モジュール２と保持中空部１１との隙間１２を空気ダクト１３と受液樋１０とに区画している。図の電池ホルダ３は、電池モジュール２の端部に位置する円筒形電池の端部に沿って隔壁１５を設け、この隔壁１５で保持中空部１１の端部に所定の幅の受液樋１０を設けている。受液樋１０の容積は、深さと幅で特定される。受液樋１０は深く、かつ幅を広くして容積を大きくして、電解液の蓄え量を多くできる。ただ、受液樋１０を設けた部分は、空気ダクトを設けることができず、電池モジュール２を冷却できなくなる。したがって、受液樋１０の幅は、電池モジュール２の冷却と蓄える電解液の量とを考慮して最適な幅、たとえば３ｍｍないし１０ｍｍとする。図６の電池ホルダ３は、保持中空部１１の内面に突出して隔壁１５を設けて、空気ダクト１３と受液樋１０に区画して、空気ダクト１３と受液樋１０の深さ、すなわち電池モジュール２と保持中空部１１の内面との隙間１２を同じにしている。ただし、受液樋を空気ダクトよりも深くして電解液の蓄え量を多くすることもできる。   As shown in FIGS. 5 and 6, the battery holder 3 is provided with a liquid receiving tank 10 that stores the electrolyte leaked from the battery module 2 at the end of the battery module 2, that is, the end of the holding hollow portion 11. . The liquid receiver 10 is provided between the surface of the battery module 2 and the inner surface of the holding hollow portion 11 and stores the electrolyte discharged from the end of the battery module 2. In the battery holder 3 shown in these drawings, a partition wall 15 that contacts the surface of the end portion of the battery module 2 is provided so as to protrude from the inner surface of the holding hollow portion 11. The partition wall 15 divides a gap 12 between the battery module 2 and the holding hollow portion 11 into an air duct 13 and a liquid receiving tank 10. In the illustrated battery holder 3, a partition wall 15 is provided along the end of the cylindrical battery located at the end of the battery module 2, and a liquid receiving bowl 10 having a predetermined width is provided at the end of the holding hollow portion 11 by the partition 15. Is provided. The volume of the liquid receiver 10 is specified by the depth and the width. The liquid receiver 10 can be deep and wide to increase the volume, thereby increasing the amount of electrolyte stored. However, the portion provided with the liquid receiver 10 cannot be provided with an air duct, and the battery module 2 cannot be cooled. Therefore, the width of the liquid receiving tank 10 is set to an optimum width, for example, 3 mm to 10 mm in consideration of the cooling of the battery module 2 and the amount of stored electrolyte. The battery holder 3 in FIG. 6 protrudes from the inner surface of the holding hollow portion 11 and is provided with a partition wall 15 and is divided into an air duct 13 and a liquid receiving tank 10, and the depth of the air duct 13 and the liquid receiving tank 10, that is, the battery. The gap 12 between the module 2 and the inner surface of the holding hollow portion 11 is the same. However, the liquid storage tank can be deeper than the air duct to increase the amount of electrolyte stored.

電池モジュール２から漏れた電解液は、電池モジュール２と保持中空部１１の内面との間の下部に溜まる。したがって、上下のホルダー３Ａ、３Ｂを連結している電池ホルダ３は、下のホルダー３Ａのみ受液樋１０を設けて、上のホルダー３Ｂには受液樋１０を設けない構造とすることができる。ただし、上下のホルダーに受液樋を設けて、電池モジュールの全周に沿って受液樋を設けることもできる。この構造の電池ホルダは、上下のホルダーに設けた受液樋で多量の電解液を蓄えることができる。ただし、上下のホルダーに受液樋を設ける電池ホルダは、上下の受液樋に溜まる電解液が、上下のホルダーの連結面から外部に漏れないように、この連結面にパッキンを挟着して水密構造に連結する。   The electrolyte solution leaking from the battery module 2 accumulates in a lower portion between the battery module 2 and the inner surface of the holding hollow portion 11. Therefore, the battery holder 3 connecting the upper and lower holders 3A and 3B can be structured such that only the lower holder 3A is provided with the liquid receiving bowl 10 and the upper holder 3B is not provided with the liquid receiving bowl 10. . However, the upper and lower holders can be provided with a liquid receiving tub, and the liquid receiving tub can be provided along the entire circumference of the battery module. The battery holder having this structure can store a large amount of electrolyte in the liquid receiver provided in the upper and lower holders. However, the battery holders that have the upper and lower holders are provided with packings on the connecting surfaces so that the electrolyte that accumulates in the upper and lower receivers does not leak to the outside from the connecting surfaces of the upper and lower holders. Connect to watertight structure.

さらに、図６の電源装置は、電池モジュール２の端部の対向位置に漏液センサ１６を配置している。漏液センサ１６は、一対の電極１７を絶縁して接近して配置している。この漏液センサ１６は、一対の電極１７間に電解液が接触して電気抵抗が小さくなる。したがって、電極１７間の電気抵抗で電解液の漏れを検出できる。このように、漏液センサ１６には電解液に接触して電気抵抗が変化するするセンサが使用できる。また、漏液センサ１には、一対の対向電極板を絶縁して配置し、対向電極の間に電解液が侵入して静電容量が変化するセンサなども使用できる。   Further, in the power supply device of FIG. 6, the liquid leakage sensor 16 is arranged at a position facing the end of the battery module 2. The liquid leak sensor 16 is disposed in close proximity to the pair of electrodes 17. In the liquid leakage sensor 16, the electrolytic solution is contacted between the pair of electrodes 17, and the electric resistance is reduced. Therefore, leakage of the electrolyte can be detected by the electric resistance between the electrodes 17. As described above, a sensor whose electrical resistance is changed by contact with the electrolyte can be used as the leak sensor 16. In addition, the liquid leakage sensor 1 may be a sensor in which a pair of counter electrode plates are insulated and arranged, and an electrolyte enters between the counter electrodes to change the capacitance.

漏液センサ１６を備える電源装置は、電解液の漏れをセンサで検出して表示できる。このため電解液が漏れると、このことを表示して感電などを防止できる。   The power supply device including the leakage sensor 16 can detect and display the leakage of the electrolytic solution with the sensor. For this reason, when electrolyte solution leaks, this can be displayed and an electric shock etc. can be prevented.

本発明の一実施例にかかる電源装置の斜視図である。It is a perspective view of the power supply device concerning one Example of this invention. 図１に示す電源装置の制御部を除いた斜視図である。FIG. 2 is a perspective view of the power supply device shown in FIG. 図２に示す電源装置の外装ケースを除いた斜視図である。FIG. 3 is a perspective view of the power supply device shown in FIG. 2 excluding an outer case. 図３に示す電源装置の垂直断面図である。FIG. 4 is a vertical sectional view of the power supply device shown in FIG. 3. 図４に示す電源装置の拡大断面図である。It is an expanded sectional view of the power supply device shown in FIG. 電池モジュールの端部を収納する電池ホルダの要部拡大斜視図である。It is a principal part expansion perspective view of the battery holder which accommodates the edge part of a battery module. 電池モジュールの斜視図である。It is a perspective view of a battery module.

符号の説明Explanation of symbols

１…電池ユニット
２…電池モジュール
３…電池ホルダ ３Ａ…ホルダー
３Ｂ…ホルダー
４…素電池
５…出力端子 ５Ａ…プラス側の出力端子
５Ｂ…ナイマス側の出力端子
６…接続体
７…バスバー
８…絶縁チューブ
１０…受液樋
１１…保持中空部
１２…隙間
１３…空気ダクト
１４…空気孔
１５…隔壁
１６…漏液センサ
１７…電極
２０…外装ケース
２１…制御部 DESCRIPTION OF SYMBOLS 1 ... Battery unit 2 ... Battery module 3 ... Battery holder 3A ... Holder
3B ... Holder 4 ... Unit cell 5 ... Output terminal 5A ... Positive output terminal
5B: Output terminal on the nitrogen side 6 ... Connector 7 ... Bus bar 8 ... Insulating tube 10 ... Liquid bowl 11 ... Holding hollow portion 12 ... Gap 13 ... Air duct 14 ... Air hole 15 ... Bulk partition 16 ... Leak sensor 17 ... Electrode 20 ... Exterior case 21 ... Control unit

Claims (6)

複数本の電池モジュール(2)を水平な姿勢で電池ホルダ(3)に配置している電源装置であって、
電池ホルダ(3)が、電池モジュール(2)を内側に入れて定位置に配置する保持中空部(11)を有しており、
さらに電池ホルダ(3)は、電池モジュール(2)の端部と保持中空部(11)の内面との間に電解液の受液樋(10)を設けており、電池モジュール(2)の端部から排出される電解液を保持中空部(11)の受液樋(10)に溜めるようにしてなる電源装置。 A power supply device in which a plurality of battery modules (2) are arranged in a horizontal orientation on a battery holder (3),
The battery holder (3) has a holding hollow part (11) for placing the battery module (2) inside and placing it in place,
Further, the battery holder (3) is provided with an electrolyte receiving tank (10) between the end of the battery module (2) and the inner surface of the holding hollow portion (11), and the end of the battery module (2) is provided. A power supply device configured to store the electrolyte discharged from the section in the liquid receiving tank (10) of the holding hollow section (11). 前記電池ホルダ(3)が、電池モジュール(2)の表面と保持中空部(11)の内面との間に隙間(12)を設けており、さらに前記保持中空部(11)には、電池モジュール(2)の端部の表面に接触する隔壁(15)を内面に突出して設けており、この隔壁(15)でもって、前記隙間(12)を空気ダクト(13)と受液樋(10)とに区画している請求項１に記載される電源装置。   The battery holder (3) is provided with a gap (12) between the surface of the battery module (2) and the inner surface of the holding hollow part (11), and the holding hollow part (11) further includes a battery module. A partition wall (15) that is in contact with the surface of the end of (2) is provided so as to protrude from the inner surface. The power supply device according to claim 1, which is partitioned into 前記電池ホルダ(3)が、電池モジュール(2)を上下多段に配設している請求項１に記載される電源装置。   The power supply device according to claim 1, wherein the battery holder (3) has battery modules (2) arranged in multiple upper and lower stages. 前記電池モジュール(2)が、互いに直線状に連結されてなる複数の素電池(4)を備え、素電池(4)の表面を絶縁チューブ(8)で被覆している請求項１に記載される電源装置。   The said battery module (2) is provided with the some unit cell (4) connected mutually linearly, The surface of the unit cell (4) is coat | covered with the insulation tube (8). Power supply. 前記電池モジュール(2)が円柱状で、電池ホルダ(3)の保持中空部(11)を円柱状としている請求項１に記載される電源装置。   The power supply device according to claim 1, wherein the battery module (2) has a cylindrical shape, and the holding hollow portion (11) of the battery holder (3) has a cylindrical shape. 前記電池ホルダ(3)が、保持中空部(11)の下部に受液樋(10)を設けている請求項１に記載される電源装置。   The power supply device according to claim 1, wherein the battery holder (3) is provided with a liquid receiving tank (10) at a lower part of the holding hollow part (11).
JP2007195832A 2007-07-27 2007-07-27 Power supply device Pending JP2009032550A (en)

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