JP5494456B2 - Battery case - Google Patents

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JP5494456B2
JP5494456B2 JP2010276276A JP2010276276A JP5494456B2 JP 5494456 B2 JP5494456 B2 JP 5494456B2 JP 2010276276 A JP2010276276 A JP 2010276276A JP 2010276276 A JP2010276276 A JP 2010276276A JP 5494456 B2 JP5494456 B2 JP 5494456B2
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tray member
tray
cover member
gasket
cover
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JP2012124131A (en
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英喜 本城
智宏 廣川
ウェン レオン ルー
賢記 稲垣
静一 高崎
功 浅井
豊 松原
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Mitsubishi Motors Corp
Mitsubishi Automotive Engineering Co Ltd
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Mitsubishi Motors Corp
Mitsubishi Automotive Engineering 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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Description

本発明は、電気自動車のバッテリモジュールを収容するためのバッテリケースに関する。   The present invention relates to a battery case for housing a battery module of an electric vehicle.

電気自動車に使用されるバッテリユニットは、複数のバッテリモジュールと、バッテリモジュールを収容するバッテリケース等とから構成されている。バッテリケースの構造としては、例えば、特許文献１に記載のバッテリケースのように、バッテリモジュールを支持するトレイ部材に埋め込みボルト及び埋め込みナットを設け、トレイ部材とトレイ部材の上部を覆うカバー部材との接合部において、その埋め込みボルトにナットを螺合させて締結するとともに、カバー部材の上方からボルトをその埋め込みナットに挿入して締結するものがある。   A battery unit used in an electric vehicle includes a plurality of battery modules and a battery case that houses the battery modules. As the structure of the battery case, for example, as in the battery case described in Patent Document 1, a tray member that supports the battery module is provided with embedded bolts and embedded nuts, and the tray member and a cover member that covers the top of the tray member are provided. Some joints are tightened by screwing nuts into the embedded bolts and inserting bolts into the embedded nuts from above the cover member.

ところで、バッテリユニットは車体の床下など車体の外部に配置されることが多いため、防水性が要求される。そのため、特許文献１に記載のバッテリケースは、ボルト，ナットにより締結されるカバー部材とトレイ部材との接合部に防水用のシール材を介装して、接合部からの水の浸入を防ぐ構成となっている。ここで使用されているシール材は、液状の樹脂系シール材であり、カバーの取付面上に塗布された後、硬化するようになっている。   By the way, since the battery unit is often arranged outside the vehicle body, such as under the floor of the vehicle body, waterproofness is required. Therefore, the battery case described in Patent Document 1 is configured to prevent water from entering from the joint portion by interposing a waterproof sealing material at the joint portion between the cover member and the tray member fastened by the bolt and nut. It has become. The sealing material used here is a liquid resin-based sealing material, and is cured after being applied on the mounting surface of the cover.

特開２００９−８７６４５号公報JP 2009-87645 A

ところで、特許文献１に記載のように、カバー部材とトレイ部材との接合部のシールに液状の樹脂系シール材を用いる場合、カバー部材の取付面上に液状の樹脂系シール材を適正に塗布する工程と、カバー部材とトレイ部材とを接合する前に、このシール材をある程度硬化させることが必要になり、作業性の上で課題がある。
一方、互いに締結される２つの部材間をシールするために、軟質ガスケットを用いることも行われている。カバー部材とトレイ部材とを隙間なく密閉するために、このようなガスケットをカバー部材とトレイ部材との接合部に介装することも考えられる。例えば、図３（ａ）に示すバッテリケースは、トレイ部材５０にゴム製の軟質ガスケット７０を配置し、この上にカバー部材６０を重ね合わせることにより、図３（ｂ）に示すように、トレイ部材５０とカバー部材６０とを密閉するものである。 By the way, as described in Patent Document 1, when a liquid resin-based sealing material is used for sealing the joint portion between the cover member and the tray member, the liquid resin-based sealing material is properly applied on the mounting surface of the cover member. It is necessary to cure the sealing material to some extent before joining the cover member and the tray member, and there is a problem in workability.
On the other hand, in order to seal between two members fastened together, a soft gasket is also used. In order to seal the cover member and the tray member without gaps, it is also conceivable to interpose such a gasket at the joint between the cover member and the tray member. For example, in the battery case shown in FIG. 3A, a rubber soft gasket 70 is disposed on the tray member 50, and a cover member 60 is overlaid on the tray member 50, as shown in FIG. The member 50 and the cover member 60 are sealed.

トレイ部材５０には、カバー部材６０と接合される接合面５４に溝部５３が形成されており、この溝部５３内にガスケット７０が配置される。この溝部５３の略中央にはさらに深い凹状の部分である深溝部５３ａが周方向に沿って連続して形成されており、この深溝部５３ａにガスケット７０の下側凸部７２を挿入して、ガスケット７０を適正な状態に保持する。ガスケット７０は、下側凸部７２が深溝部５３ａ内に挿入され、下側凸部７２の真上に中空部７３の中心及び上側凸部７１がこの順にある場合に適正な状態とされる。この状態のままカバー部材６０の接合面６４をトレイ部材５０の接合面５４に重ね合わせることにより、図３（ｂ）に示すように、ガスケット７０の中空部７３の空間７３ａが完全に押し潰されて、トレイ部材５０とカバー部材６０とが密閉される。   In the tray member 50, a groove portion 53 is formed in a joint surface 54 to be joined to the cover member 60, and a gasket 70 is disposed in the groove portion 53. A deep groove 53a, which is a deeper concave portion, is continuously formed along the circumferential direction in the approximate center of the groove 53, and the lower convex portion 72 of the gasket 70 is inserted into the deep groove 53a, The gasket 70 is held in an appropriate state. The gasket 70 is in an appropriate state when the lower convex portion 72 is inserted into the deep groove portion 53 a and the center of the hollow portion 73 and the upper convex portion 71 are in this order directly above the lower convex portion 72. By superposing the joining surface 64 of the cover member 60 on the joining surface 54 of the tray member 50 in this state, the space 73a of the hollow portion 73 of the gasket 70 is completely crushed as shown in FIG. Thus, the tray member 50 and the cover member 60 are sealed.

しかしながら、図３（ａ）に示すように、ガスケット７０が適正な状態のときにカバー部材６０をトレイ部材５０に接合させる場合、カバー側の接合面６４は、まずガスケット７０の上側凸部７１に接触するが、この状態でカバー部材６０に水平方向の力（接合方向に対して横向きの力）が加わると、ガスケット７０にも水平方向の力が加わり、ガスケット７０は適正な状態に保持されなくなる。すなわち、ガスケット７０は、例えば上側凸部７１がトレイ部材５０の内側方向へ倒れたような状態になってしまう。   However, as shown in FIG. 3A, when the cover member 60 is joined to the tray member 50 when the gasket 70 is in an appropriate state, the cover-side joining surface 64 is first formed on the upper convex portion 71 of the gasket 70. In this state, when a horizontal force (a force transverse to the joining direction) is applied to the cover member 60 in this state, a horizontal force is also applied to the gasket 70, and the gasket 70 is not held in an appropriate state. . That is, the gasket 70 will be in the state where the upper side convex part 71 fell in the inner direction of the tray member 50, for example.

ガスケット７０がこのような状態のまま、カバー部材６０をトレイ部材５０に接合させると、図３（ｃ）に示すように、ガスケット７０が溝部５３からはみ出てしまい、トレイ側の接合面５４とカバー側の接合面６４との間に隙間Ｇができてしまう。隙間Ｇができた状態では、トレイ部材５０とカバー部材６０との密閉性が低下してしまい、必要な防水性を確保することができない。   When the cover member 60 is joined to the tray member 50 with the gasket 70 in such a state, the gasket 70 protrudes from the groove 53 as shown in FIG. 3C, and the tray-side joining surface 54 and the cover are covered. A gap G is formed between the joint surface 64 on the side. In a state where the gap G is formed, the sealing performance between the tray member 50 and the cover member 60 is lowered, and the necessary waterproofness cannot be ensured.

本発明はこのような課題に鑑み案出されたもので、容易にカバー部材をトレイ部材に接合でき、防水性を確保することができるようにした、バッテリケースを提供することを目的とする。   The present invention has been devised in view of such problems, and an object of the present invention is to provide a battery case in which a cover member can be easily joined to a tray member to ensure waterproofness.

上記課題を解決するために、本発明のバッテリケースは、電気自動車の駆動用のバッテリを収容するバッテリケースであって、前記バッテリを支持するトレイ部材と、前記トレイ部材の上に重ねて前記トレイ部材に固定されるカバー部材と、前記トレイ部材と前記カバー部材との間に介装されるガスケットと、を備え、前記カバー部材は、前記ガスケット近傍に前記カバー部材と前記トレイ部材との接合方向に沿って突設される位置決めピンを有し、前記トレイ部材は、前記接合方向に沿って穿設され、前記位置決めピンが挿入される位置決め穴を有し、前記位置決めピンは、前記カバー部材の長手方向両端部にそれぞれ設けられ、前記位置決め穴は、前記トレイ部材の長手方向両端部にそれぞれ形成されるとともに、前記トレイ部材の前記長手方向一端部に設けられた基準穴と、前記トレイ部材の前記長手方向他端部に設けられ、前記カバー部材の前記長手方向への相対移動を許容する逃げ穴とから構成されることを特徴としている。 In order to solve the above-described problems, a battery case according to the present invention is a battery case that houses a battery for driving an electric vehicle, and includes a tray member that supports the battery, and a tray member that overlaps the tray member. A cover member fixed to the member, and a gasket interposed between the tray member and the cover member, wherein the cover member is joined in the vicinity of the gasket in the joining direction of the cover member and the tray member. has a positioning pin which is protruded along the tray member is bored along the welding direction, have a positioning hole in which the positioning pins are inserted, the positioning pins of the cover member The positioning holes are provided at both ends in the longitudinal direction, and the positioning holes are formed at both ends in the longitudinal direction of the tray member. Wherein the reference hole provided in the longitudinal direction one end portion, provided on said other longitudinal end portion of the tray member, the Rukoto is composed of a relief hole which permits relative movement in the said longitudinal direction of said cover member It is said.

また、前記ガスケットは、前記トレイ部材及び前記カバー部材の何れかに形成された環状溝部内に配置され、前記カバー部材と前記トレイ部材との接合時に両者に押圧され圧縮変形することによって、前記環状溝部内に収納され、前記位置決めピンは、前記カバー部材の前記トレイ部材への重ね合わせ時に前記環状溝部内に配置される前記ガスケットが前記カバー部材と前記トレイ部材との両者に接触する前に、前記位置決め穴に進入するように長さ設定されていることが好ましい。   Further, the gasket is disposed in an annular groove formed in either the tray member or the cover member, and is pressed against both the cover member and the tray member when they are joined, so that the annular member is compressed. The positioning pin is accommodated in the groove, and the positioning pin is placed in the annular groove when the cover member is superimposed on the tray member before the gasket contacts both the cover member and the tray member. It is preferable that the length is set so as to enter the positioning hole.

また、前記トレイ部材は、前記トレイ部材上を複数の区画に仕切るリブを有し、前記位置決め穴は、前記トレイ部材の前記リブ上にそれぞれ形成されていることが好ましい。 Also, the tray member has a rib for partitioning the tray member on a plurality of compartments, the positioning holes are preferably formed respectively on the ribs of the tray member.

本発明のバッテリケースによれば、バッテリケースを構成するトレイ部材とカバー部材との間にガスケットを介装する際に、位置決めピンを位置決め穴に挿入させることによりカバー部材の水平方向への移動が規制され、ガスケットに水平方向の力（接合方向に対して横向きの力）が作用することを防ぐことができるため、ガスケットが適正な状態に保持されたままトレイ部材にカバー部材を接合することができる。そのため、トレイ部材とカバー部材との密閉性の低下を抑制でき、必要な防水性を確保することができる。   According to the battery case of the present invention, when the gasket is interposed between the tray member and the cover member constituting the battery case, the cover member can be moved in the horizontal direction by inserting the positioning pin into the positioning hole. Since it is regulated and it is possible to prevent a horizontal force (a force transverse to the joining direction) from acting on the gasket, it is possible to join the cover member to the tray member while keeping the gasket in an appropriate state. it can. Therefore, it is possible to suppress a decrease in sealing performance between the tray member and the cover member, and to secure necessary waterproofness.

本発明の一実施形態にかかるバッテリケースの構造を説明する模式的な要部拡大断面図であり、（ａ）はトレイ部材とカバー部材との接合前、（ｂ）はトレイ部材とカバー部材との接合時をそれぞれ示す。It is a typical principal part expanded sectional view explaining the structure of the battery case concerning one Embodiment of this invention, (a) is before joining a tray member and a cover member, (b) is a tray member and a cover member. The time of joining is shown. 本発明の一実施形態にかかるバッテリケースの構造を説明する模式図であり、（ａ）はトレイ部材及びカバー部材の全体斜視図（両部材の対応関係を一点鎖線で示す）、（ｂ）は図２（ａ）のＢ部拡大平面図、（ｃ）は図２（ａ）のＣ部拡大平面図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram explaining the structure of the battery case concerning one Embodiment of this invention, (a) is a whole perspective view of a tray member and a cover member (The correspondence of both members is shown with a dashed-dotted line), (b) is FIG. 2A is an enlarged plan view of a portion B in FIG. 2A, and FIG. 2C is an enlarged plan view of a portion C in FIG. 従来の課題を説明する模式的な断面図であり、（ａ）はトレイ部材とカバー部材との接合前、（ｂ）は正常な場合のトレイ部材とカバー部材との接合時、（ｃ）はガスケットが歪んだ場合のトレイ部材とカバー部材との接合時をそれぞれ示す。It is typical sectional drawing explaining the conventional subject, (a) is before joining of a tray member and a cover member, (b) is at the time of joining of a tray member and a cover member in the case of normal, (c) is The time when the tray member and the cover member are joined when the gasket is distorted is shown.

以下、図面により実施の形態について説明する。なお、以下に示す実施形態はあくまでも例示に過ぎず、以下の実施形態で明示しない種々の変形や技術の適用を排除する意図はない。
本実施形態にかかるバッテリケースの構造について、図１（ａ），（ｂ）及び図２（ａ）〜（ｃ）を用いて説明する。本バッテリケースは、ハイブリッド電気自動車を含む電気自動車の駆動用のバッテリモジュールを収容するものであり、防水性が要求される環境で使用されるものに用いて好適である。ここでは、車体の床下にバッテリユニットが設置され、防水性が要求される電気自動車に適用した例で説明する。なお、以下、電気自動車の進行方向を前方とし、前方を基準に左右を定め、重力の方向を下方とし、その逆を上方として説明する。また、バッテリケースの中心に向かう側を内側、その逆を外側として説明する。 Hereinafter, embodiments will be described with reference to the drawings. Note that the embodiment described below is merely an example, and there is no intention to exclude various modifications and technical applications that are not explicitly described in the following embodiment.
The structure of the battery case according to the present embodiment will be described with reference to FIGS. 1 (a) and 1 (b) and FIGS. 2 (a) to 2 (c). This battery case accommodates a battery module for driving an electric vehicle including a hybrid electric vehicle, and is suitable for use in an environment where waterproofness is required. Here, an example in which a battery unit is installed under the floor of a vehicle body and applied to an electric vehicle that requires waterproofness will be described. In the following description, it is assumed that the traveling direction of the electric vehicle is the front, the left and right are determined with reference to the front, the direction of gravity is the lower side, and vice versa. Further, a description will be given assuming that the side toward the center of the battery case is the inside and the opposite is the outside.

まず、バッテリケース１の基本的な構造について説明する。
図２（ａ）に示すように、バッテリケース１は、複数のバッテリモジュール（バッテリ）２〔図２（ａ）に一部のみ二点鎖線で収納状態を例示する〕を支持する樹脂製のトレイ部材１０と、トレイ部材１０の上に重ねられてトレイ部材１０に結合、固定される樹脂製のカバー部材２０とを有して構成されている。トレイ部材１０及びカバー部材２０は、例えばガラス繊維等の繊維を補強材として混合されて強度，剛性を向上させ、電気絶縁性を有する繊維強化樹脂（ＦＲＰ）で形成されている。また、バッテリモジュール２は、例えば、リチウムイオン電池で構成されるバッテリセルを複数個直列に接続し一体化したものである。 First, the basic structure of the battery case 1 will be described.
As shown in FIG. 2 (a), the battery case 1 includes a resin tray that supports a plurality of battery modules (batteries) 2 [parts of FIG. A member 10 and a resin cover member 20 that is stacked on the tray member 10 to be coupled and fixed to the tray member 10 are configured. The tray member 10 and the cover member 20 are made of fiber reinforced resin (FRP) which is mixed with a fiber such as glass fiber as a reinforcing material to improve strength and rigidity and has electrical insulation. Moreover, the battery module 2 is formed by connecting and integrating a plurality of battery cells made of, for example, lithium ion batteries in series.

トレイ部材１０は、前壁１１ａと、後壁１１ｂと、左右一対の側壁１１ｃ，１１ｄと、底壁１１ｅと、複数のリブ１１ｆ，１１ｇとを有し、上面側が開放した箱型に成形されている。前壁１１ａは、図示しない車体の前方に位置し、後壁１１ｂは車体の後方に位置する。また、両側壁１１ｃ，１１ｄは前後方向に延びており、これら前壁１１ａと後壁１１ｂと両側壁１１ｃ，１１ｄとによって、トレイ部材１０の周壁１１が構成される。このトレイ部材１０の正面視（上面視）の外形形状は長方形をなしている。   The tray member 10 has a front wall 11a, a rear wall 11b, a pair of left and right side walls 11c and 11d, a bottom wall 11e, and a plurality of ribs 11f and 11g. Yes. The front wall 11a is positioned in front of the vehicle body (not shown), and the rear wall 11b is positioned in the rear of the vehicle body. The side walls 11c and 11d extend in the front-rear direction, and the front wall 11a, the rear wall 11b, and the side walls 11c and 11d constitute the peripheral wall 11 of the tray member 10. The external shape of the tray member 10 when viewed from the front (from the top) is rectangular.

また、前側リブ１１ｆ及び後側リブ１１ｇは、トレイ部材１０上を複数の区画に仕切る仕切壁であるとともに、トレイ部材１０の剛性を高め必要とする剛性を確保するものであり、車体の前後方向に延設されている。このトレイ部材１０は、インジェクション成形（射出成形）により各部が一体に成形されている。なお、インジェクション成形とは、最も一般的な樹脂成形方法であり、キャビティ（凹型）とコア（凸型）とからなる金型内に製品形状を彫りこみ、成形機内で加熱されて溶融した樹脂原料を金型内に高圧で注入して成形する方法である。   Further, the front rib 11f and the rear rib 11g are partition walls that partition the tray member 10 into a plurality of sections, and increase the rigidity of the tray member 10 to ensure the required rigidity. It is extended to. Each part of the tray member 10 is integrally formed by injection molding (injection molding). Injection molding is the most common resin molding method, in which the product shape is engraved in a mold consisting of a cavity (concave mold) and a core (convex mold), and the resin material heated and melted in the molding machine is used. This is a method of molding by injecting into a mold at high pressure.

トレイ部材１０の周壁１１の上端の周縁部には、図１（ａ）にも示すように、トレイ側フランジ部１２が周壁１１の上端から水平方向に沿って外側に向けて突設されている。このトレイ側フランジ部１２はトレイ部材１０の全周にわたって連続して設けられており、後述するカバー側フランジ部２２と接合されることにより、トレイ部材１０とカバー部材２０とが密閉される。なお、このときカバー側フランジ部２２と接合される面をトレイ側接合面１４という。すなわち、トレイ側接合面１４は、トレイ側フランジ部１２の上端面のことであり、トレイ側接合面１４の法線は鉛直方向上方へ向かって延在する。このときの法線方向をトレイ部材１０の接合方向Ｆ1とする。 As shown in FIG. 1A, a tray-side flange portion 12 projects from the upper end of the peripheral wall 11 outward in the horizontal direction at the peripheral edge portion of the upper end of the peripheral wall 11 of the tray member 10. . The tray side flange portion 12 is continuously provided over the entire circumference of the tray member 10, and the tray member 10 and the cover member 20 are sealed by being joined to a cover side flange portion 22 described later. In addition, the surface joined with the cover side flange part 22 at this time is called the tray side joining surface 14. That is, the tray side joining surface 14 is the upper end surface of the tray side flange portion 12, and the normal line of the tray side joining surface 14 extends upward in the vertical direction. The normal direction at this time is defined as a joining direction F 1 of the tray member 10.

トレイ側フランジ部１２のトレイ側接合面１４には、トレイ部材１０の周方向に沿って環状に連続して凹状に形成された溝部（環状溝部）１３が設けられており、この溝部１３の略中央には、溝部１３よりも溝幅が小さい深溝部１３ａが周方向に沿って環状に連続して凹状に形成されている。これら溝部１３及び深溝部１３ａには、後述するガスケット３０が装備される。なお、トレイ部材１０のトレイ側接合面１４であって溝部１３よりも内側の部分には、トレイ部材１０の周方向に沿って連続して形成された突起部１７が設けられている。   The tray-side joint surface 14 of the tray-side flange portion 12 is provided with a groove portion (annular groove portion) 13 that is continuously annularly formed along the circumferential direction of the tray member 10. In the center, a deep groove portion 13a having a groove width smaller than that of the groove portion 13 is formed annularly and concavely along the circumferential direction. These groove 13 and deep groove 13a are equipped with a gasket 30 described later. A protrusion 17 formed continuously along the circumferential direction of the tray member 10 is provided on the tray-side joining surface 14 of the tray member 10 and inside the groove 13.

カバー部材２０は、前***部２１ａ，後***部２１ｂ及び中***部２１ｃからなるカバー本体２１と、カバー本体２１の周縁部に設けられたカバー側フランジ部２２とから構成されており、トレイ部材１０と同様、インジェクション成形により一体成形されている。カバー部材２０の正面視（上面視）の外形形状は、トレイ部材１０と同様、長方形になっている。   The cover member 20 includes a cover main body 21 including a front raised portion 21a, a rear raised portion 21b, and a middle raised portion 21c, and a cover-side flange portion 22 provided on the peripheral edge of the cover main body 21, and a tray member. As in the case of 10, it is integrally formed by injection molding. The outer shape of the cover member 20 when viewed from the front (viewed from above) is a rectangle, similar to the tray member 10.

なお、ここでは、トレイ部材１０及びカバー部材２０はいずれも上面視において四隅の角部が円弧状に丸められた長方形に形成されているが、トレイ部材１０及びカバー部材２０の形状はこれに限られず、車両へのレイアウトや周囲の装置との配置関係等により種々の形状を採用することができる。例えば、四隅の角部が円弧状に丸められていない長方形や、長方形以外の長手方向を有する形状や、正方形のように長手方向が規定できないような形状であってもよい。   Here, both the tray member 10 and the cover member 20 are formed in a rectangle in which the corners of the four corners are rounded in an arc shape when viewed from above, but the shapes of the tray member 10 and the cover member 20 are not limited thereto. However, various shapes can be adopted depending on the layout on the vehicle, the arrangement relationship with surrounding devices, and the like. For example, it may be a rectangle whose four corners are not rounded, a shape having a longitudinal direction other than a rectangle, or a shape such as a square in which the longitudinal direction cannot be defined.

カバー側フランジ部２２は、カバー本体２１の下端から水平方向に沿って外側に向けて突設されており、カバー部材２０の全周にわたって連続して設けられている。このカバー側フランジ部２２とトレイ側フランジ部１２とが接合される面をカバー側接合面２４という。すなわち、カバー側接合面２４は、カバー側フランジ部２２の下端面のことであり、カバー側接合面２４の法線は鉛直方向下方へ向かって延在する。このときの法線方向をカバー部材２０の接合方向Ｆ2とする。つまり、トレイ部材１０の接合方向Ｆ1とカバー部材２０の接合方向Ｆ2はともに鉛直方向を表す。なお、カバー側フランジ部２２の先端には、上方に凸状に形成された凸状部２２ａが設けられている。 The cover-side flange portion 22 protrudes outward from the lower end of the cover main body 21 along the horizontal direction, and is continuously provided over the entire circumference of the cover member 20. A surface where the cover side flange portion 22 and the tray side flange portion 12 are joined is referred to as a cover side joining surface 24. That is, the cover side joint surface 24 is a lower end surface of the cover side flange portion 22, and the normal line of the cover side joint surface 24 extends downward in the vertical direction. The normal direction at this time is defined as a joining direction F 2 of the cover member 20. That is, the bonding direction F 2 of the welding direction F 1 and the cover member 20 of the tray member 10 both represent vertical direction. Note that a convex portion 22 a formed in a convex shape upward is provided at the tip of the cover-side flange portion 22.

ガスケット３０は、図１（ａ）及び図１（ｂ）に示すように、トレイ部材１０のトレイ側フランジ部１２とカバー部材２０のカバー側フランジ部２２との間に介装されており、上側凸部３１と下側凸部３２と中空部３３とを有して一体で構成されている。ガスケット３０は、弾力性（柔軟性）や耐圧性等を有する、例えばゴム（天然ゴムや合成ゴム）等の弾性部材で形成された軟質ガスケットであり、トレイ側フランジ部１２及びカバー側フランジ部２２の全周にわたって連続して設けられた環状のシール部材である。   As shown in FIGS. 1A and 1B, the gasket 30 is interposed between the tray side flange portion 12 of the tray member 10 and the cover side flange portion 22 of the cover member 20. The protrusion 31, the lower protrusion 32, and the hollow portion 33 are provided to be integrated. The gasket 30 is a soft gasket made of an elastic member such as rubber (natural rubber or synthetic rubber) having elasticity (flexibility), pressure resistance, and the like, and includes a tray side flange portion 12 and a cover side flange portion 22. It is the cyclic | annular sealing member provided continuously over the perimeter.

ガスケット３０の中空部３３は、ガスケット３０の連続する方向に垂直な断面視〔図１（ａ）参照〕において、外形が略楕円形に形成され、その中心部分に卵形の空間３３ａを有している。この中空部３３により、軟質ガスケットの柔軟性が確保され、弾性変形域が確保されている。また、ガスケット３０の上側凸部３１は、中空部３３の略最上部から上方に向けて凸状に一体成形された部分であり、先端に向かうほど鋭角に形成されている。また、ガスケット３０の下側凸部３２は、中空部３３の略最下部から下方に向けて凸状に一体成形された部分であり、先端まで略同じ幅で突設され、下端面の中央にわずかに突起部分が形成されている。   The hollow portion 33 of the gasket 30 has a substantially elliptical outer shape in a cross-sectional view perpendicular to the continuous direction of the gasket 30 (see FIG. 1A), and has an oval space 33a at the center. ing. The hollow portion 33 ensures the flexibility of the soft gasket and secures an elastic deformation region. Further, the upper convex portion 31 of the gasket 30 is a portion integrally formed in a convex shape from the substantially uppermost portion of the hollow portion 33 upward, and is formed at an acute angle toward the tip. Further, the lower convex portion 32 of the gasket 30 is a portion integrally formed in a convex shape from the substantially lowermost portion of the hollow portion 33 to the lower side, protrudes with substantially the same width to the tip, and is formed at the center of the lower end surface. A slightly protruding portion is formed.

ガスケット３０は、図１（ａ）に示すように、下側凸部３２がトレイ部材１０のトレイ側フランジ部１２に形成された溝部１３内に配置され、深溝部１３ａに挿入されて保持される。この状態、すなわち、下側凸部３２の真上に中空部３３の中心及び上側凸部３１がこの順にある場合を、ガスケット３０の適正な状態という。ガスケット３０が適正な状態のまま、トレイ部材１０とカバー部材２０との接合時に両者に押圧され圧縮変形されると、図１（ｂ）に示すように、ガスケット３０は中空部３３の空間３３ａが完全に押し潰されて、溝部１３及び深溝部１３ａ内に収納され圧入された状態となり、トレイ部材１０とカバー部材２０とが密閉される。   As shown in FIG. 1A, the gasket 30 has a lower convex portion 32 disposed in the groove portion 13 formed in the tray-side flange portion 12 of the tray member 10, and is inserted and held in the deep groove portion 13a. . This state, that is, the case where the center of the hollow portion 33 and the upper convex portion 31 are in this order directly above the lower convex portion 32 is referred to as an appropriate state of the gasket 30. When the gasket 30 is in an appropriate state, when the tray member 10 and the cover member 20 are joined to each other and pressed against each other and compressed and deformed, the gasket 30 has a space 33a in the hollow portion 33 as shown in FIG. The tray member 10 and the cover member 20 are hermetically sealed by being completely crushed and housed in the groove 13 and the deep groove 13a.

なお、トレイ部材１０とカバー部材２０とは、板金により形成された上側狭持プレート４１及び下側狭持プレート４２と、これらを締結する複数のボルト４３及びナット４４とからなる締結部材４０によってトレイ側フランジ部１２及びカバー側フランジ部２２を締結することにより、固定される。   In addition, the tray member 10 and the cover member 20 are trays by a fastening member 40 including an upper sandwiching plate 41 and a lower sandwiching plate 42 formed of sheet metal, and a plurality of bolts 43 and nuts 44 for fastening them. The side flange portion 12 and the cover side flange portion 22 are fixed by fastening.

次に、本バッテリケース１の特徴的な構造について説明する。
図１（ａ）に示すように、カバー部材２０には、カバー本体２１からカバー部材２０の接合方向Ｆ2に沿って突設され、トレイ部材１０に対するカバー部材２０の位置を規制する位置決めピン２５が設けられている。また、位置決めピン２５は、ガスケット３０の近傍であって、ガスケット３０の配置位置よりも、内側、つまりバッテリモジュール配置側に設けられている。また、トレイ部材１０には、トレイ部材１０の接合方向Ｆ1に沿って穿設され、位置決めピン２５が挿入される位置決め穴１５が設けられている。すなわち、位置決め穴１５は、位置決めピン２５に対応する位置に設けられている。 Next, a characteristic structure of the battery case 1 will be described.
As shown in FIG. 1A, the cover member 20 protrudes from the cover main body 21 along the joining direction F 2 of the cover member 20 and regulates the position of the cover member 20 with respect to the tray member 10. Is provided. Further, the positioning pin 25 is provided in the vicinity of the gasket 30 and on the inner side, that is, on the battery module arrangement side from the arrangement position of the gasket 30. Further, the tray member 10 is provided with a positioning hole 15 which is drilled along the joining direction F 1 of the tray member 10 and into which the positioning pin 25 is inserted. That is, the positioning hole 15 is provided at a position corresponding to the positioning pin 25.

位置決め穴１５について図２（ａ）〜図２（ｃ）を加えて説明する。ここで、図２（ｂ）及び図２（ｃ）は、図２（ａ）中にＢ及びＣで示す部分のそれぞれ拡大平面図である。位置決め穴１５は、上面視において長方形をなすトレイ部材１０の長手方向両端部、すなわち前壁１１ａ及び後壁１１ｂの近傍にそれぞれ１つずつ形成されている。また、これら位置決め穴１５は、トレイ部材１０の幅方向中心からそれぞれ同じ長さだけ左にシフトして、トレイ部材１０上を複数の区画に仕切るリブ１１ｆ，１１ｇ上であって長手方向の一直線上にそれぞれ設けられている。なお、ここでは、図２（ａ）に示す前後方向が長手方向である。   The positioning hole 15 will be described with reference to FIGS. 2 (a) to 2 (c). Here, FIGS. 2B and 2C are enlarged plan views of portions indicated by B and C in FIG. 2A, respectively. The positioning holes 15 are formed one by one at both ends in the longitudinal direction of the tray member 10 that is rectangular when viewed from above, that is, near the front wall 11a and the rear wall 11b. Further, these positioning holes 15 are shifted to the left by the same length from the center in the width direction of the tray member 10, and are on the ribs 11 f and 11 g that partition the tray member 10 into a plurality of sections on a straight line in the longitudinal direction. Are provided respectively. Here, the longitudinal direction shown in FIG. 2A is the longitudinal direction.

図１（ａ），図２（ｂ）及び図２（ｃ）に示すように、位置決め穴１５は、トレイ部材１０の周壁１１（すなわち、前壁１１ａ，後壁１１ｂ）よりも内側に立設して肉盛りされたトレイ側の肉盛り部１６に形成されている。肉盛り部１６は、前側リブ１１ｆが前壁１１ａの内面と交わる部分に、前壁１１ａの内面から内側に突出して肉盛りされており、肉盛り部１６の上面は、トレイ側接合面１４に設けられた突起部１７の上面と一体となって同一面を形成する。また、後側リブ１１ｇが後壁１１ｂの内面と交わる部分にも同様に肉盛り部１６が形成されている。 As shown in FIGS. 1 (a), 2 (b) and 2 (c), the positioning hole 15 is erected on the inner side of the peripheral wall 11 (that is, the front wall 11a and the rear wall 11b) of the tray member 10. Thus, it is formed in the built-up portion 16 on the tray side that is built up. Built-up portion 16, the portion front rib 11f is intersecting the inner surface of the front wall 11a, are padding protrudes from the inner surface of the front wall 11a on the inside, top surface of the padding portion 16, the tray side joining surface 14 The same surface is formed integrally with the upper surface of the protrusion 17 provided. Further, a built-up portion 16 is similarly formed at a portion where the rear rib 11g intersects the inner surface of the rear wall 11b.

位置決め穴１５は、トレイ部材１０の長手方向一端部に設けられた基準穴１５ａと、トレイ部材１０の長手方向他端部に設けられた逃げ穴１５ｂとから構成されている。ここでは、基準穴１５ａは前方に設けられ、逃げ穴１５ｂは後方に設けられているが、これらは逆であってもよい。なお、これら基準穴１５ａ及び逃げ穴１５ｂを特に区別しない場合には、位置決め穴１５という。   The positioning hole 15 includes a reference hole 15 a provided at one end portion in the longitudinal direction of the tray member 10 and a relief hole 15 b provided at the other end portion in the longitudinal direction of the tray member 10. Here, although the reference hole 15a is provided in the front and the escape hole 15b is provided in the rear, these may be reversed. Note that the reference hole 15a and the escape hole 15b are referred to as positioning holes 15 unless otherwise distinguished.

基準穴１５ａは、後述する位置決めピン２５の水平方向断面形状と同じく、上面視において円形状をした穴であり、その内径は位置決めピン２５の外径よりもわずかに大きく、下方に向かうほどわずかに縮径している。また、逃げ穴１５ｂは、いわゆる長穴、或いは小判型の穴で形成されており、下方に向かうほど穴の断面形状はわずかに小さくなっている。   The reference hole 15a is a hole having a circular shape in a top view as in the horizontal cross-sectional shape of the positioning pin 25 described later, and its inner diameter is slightly larger than the outer diameter of the positioning pin 25, and slightly toward the lower side. The diameter is reduced. The escape hole 15b is formed of a so-called long hole or an oblong hole, and the cross-sectional shape of the hole is slightly smaller toward the lower side.

なお、長穴を定義すれば、上面視において、前後方向に延びる平行な２本の直線と、これらの直線の前端部及び後端部をそれぞれ円弧で結んだ形状のものをいい、ここでは、２本の直線間の長さが基準穴１５ａの内径と略同一の形状に形成されている。なお、逃げ穴１５ｂの形状は長穴に限られず、前後方向に逃げスペースを有していればよく、例えば楕円形であってもよい。また、位置決め穴１５は、位置決めピン２５が挿入されて、トレイ側接合面１４とカバー側接合面２４とが接合されたときに、位置決めピン２５の下端が位置決め穴１５の底面に接触しない程度の深さに穿設されている。   In addition, if a long hole is defined, it refers to a shape in which two parallel straight lines extending in the front-rear direction and a front end portion and a rear end portion of these straight lines are connected by arcs in a top view, The length between the two straight lines is formed in a shape substantially the same as the inner diameter of the reference hole 15a. Note that the shape of the escape hole 15b is not limited to the long hole, and may have an escape space in the front-rear direction, for example, may be elliptical. The positioning hole 15 is such that the lower end of the positioning pin 25 does not contact the bottom surface of the positioning hole 15 when the positioning pin 25 is inserted and the tray-side joining surface 14 and the cover-side joining surface 24 are joined. Drilled to depth.

位置決めピン２５について、図１（ａ）及び図１（ｂ）を用いて説明する。位置決めピン２５は、位置決め穴１５に対応する位置に設けられているため、上面視において長方形をなすカバー部材２０の長手方向両端部にそれぞれ１つずつ形成され、カバー部材２０の幅方向中心からそれぞれ同じ長さだけ左にシフトして、長手方向の一直線上にそれぞれ設けられている。   The positioning pin 25 will be described with reference to FIGS. 1 (a) and 1 (b). Since the positioning pins 25 are provided at positions corresponding to the positioning holes 15, one is formed at each of both ends in the longitudinal direction of the cover member 20, which is rectangular in a top view, and each from the center in the width direction of the cover member 20. They are shifted to the left by the same length and provided on a straight line in the longitudinal direction.

位置決めピン２５は、いずれも、カバー本体２１の立設部分の下端面２７から下方に突出して形成され、水平方向断面視において円形状のピン部材であり、下方に向かうほどその外径は縮径している。位置決めピン２５は、カバー部材２０のトレイ部材１０への重ね合わせ時に、溝部１３内の深溝部１３ａに予め配置されるガスケット３０の上側凸部３１が、カバー部材２０とトレイ部材１０との両者に接触する前に、位置決め穴１５に進入するように長さ設定されている。すなわち、位置決めピン２５は、カバー側接合面２４から下方に突出する長さＸが、トレイ側接合面１４よりも上方に突出するガスケット３０の長さＹよりも長くなるように形成されている。   Each of the positioning pins 25 is formed so as to protrude downward from the lower end surface 27 of the standing portion of the cover main body 21 and is a circular pin member in a horizontal sectional view, and the outer diameter thereof decreases toward the lower side. doing. When the cover member 20 is superposed on the tray member 10, the positioning pin 25 is formed so that the upper convex portion 31 of the gasket 30 arranged in advance in the deep groove portion 13 a in the groove portion 13 is formed on both the cover member 20 and the tray member 10. Before the contact, the length is set so as to enter the positioning hole 15. That is, the positioning pin 25 is formed such that the length X protruding downward from the cover side bonding surface 24 is longer than the length Y of the gasket 30 protruding upward from the tray side bonding surface 14.

本実施形態にかかるバッテリケース１は上述のように構成されているので、トレイ部材１０に対するカバー部材２０の接合は、以下のようにして行う。
はじめに、トレイ部材１０の溝部１３内に形成された深溝部１３ａにガスケット３０の下側凸部３２を挿入し、ガスケット３０を適正な状態に保持する。次に、この状態でトレイ部材１０の上方から、カバー部材２０を重ね合わせる。このとき、まず前方の位置決めピン２５をトレイ部材１０の前方に形成された基準穴１５ａに挿入するとともに、後方の位置決めピン２５をトレイ部材１０の後方に形成された逃げ穴１５ｂに挿入する。これにより、トレイ部材１０に対するカバー部材２０の位置が規制される。 Since the battery case 1 according to the present embodiment is configured as described above, the cover member 20 is joined to the tray member 10 as follows.
First, the lower convex portion 32 of the gasket 30 is inserted into the deep groove portion 13a formed in the groove portion 13 of the tray member 10, and the gasket 30 is held in an appropriate state. Next, the cover member 20 is overlapped from above the tray member 10 in this state. At this time, first, the front positioning pin 25 is inserted into the reference hole 15 a formed in front of the tray member 10, and the rear positioning pin 25 is inserted into the escape hole 15 b formed in the rear of the tray member 10. Thereby, the position of the cover member 20 with respect to the tray member 10 is regulated.

なお、基準穴１５ａに位置決めピン２５が挿入されると、位置決めピン２５の動きは前後左右方向のいずれにも規制されてほとんど動くことができない。一方、逃げ穴１５ｂに挿入された位置決めピン２５は、長手方向（前後方向）に逃げスペースを有しているため、この逃げ穴１５ｂによりトレイ部材１０に対するカバー部材２０の相対移動が許容されている。   When the positioning pin 25 is inserted into the reference hole 15a, the movement of the positioning pin 25 is restricted in both the front and rear and left and right directions and hardly moves. On the other hand, since the positioning pin 25 inserted into the escape hole 15b has a clearance space in the longitudinal direction (front-rear direction), the relative movement of the cover member 20 with respect to the tray member 10 is allowed by the escape hole 15b. .

いずれの位置決め穴１５にも位置決めピン２５を挿入した後、ガスケット３０を圧縮変形させながらカバー部材２０のカバー側接合面２４をトレイ側接合面１４に重ね合わせる。そして、トレイ側フランジ部１２及びカバー側フランジ部２２を締結部材４０により締結することで、トレイ部材１０とカバー部材２０とを固定し、密閉する。   After inserting the positioning pin 25 into any of the positioning holes 15, the cover side joining surface 24 of the cover member 20 is overlapped with the tray side joining surface 14 while compressing and deforming the gasket 30. Then, the tray side flange portion 12 and the cover side flange portion 22 are fastened by the fastening member 40 to fix and seal the tray member 10 and the cover member 20.

したがって、本バッテリケース１によれば、トレイ部材１０とカバー部材２０との間にガスケット３０を介装する際に、位置決めピン２５が位置決め穴１５に挿入されることにより、カバー部材２０の水平方向への移動が規制され、ガスケット３０に水平方向の力（すなわち、接合方向に対して横向きの力）が作用することを防ぐことができる。これにより、ガスケット３０を適正な状態に保持したまま、トレイ部材１０にカバー部材２０を接合することができるため、トレイ部材１０とカバー部材２０との密閉性（シール性）の低下を抑制でき、必要な防水性を確保することができる。   Therefore, according to the battery case 1, when the gasket 30 is interposed between the tray member 10 and the cover member 20, the positioning pin 25 is inserted into the positioning hole 15, thereby causing the cover member 20 to move in the horizontal direction. Therefore, it is possible to prevent the horizontal force (that is, the lateral force with respect to the joining direction) from acting on the gasket 30. Thereby, since the cover member 20 can be joined to the tray member 10 while holding the gasket 30 in an appropriate state, it is possible to suppress a decrease in the sealing property (sealability) between the tray member 10 and the cover member 20, Necessary waterproofness can be secured.

また、位置決めピン２５及び位置決め穴１５により、トレイ部材１０に対するカバー部材２０の位置を規制することができるため、トレイ部材１０に対するカバー部材２０の接合を高精度に行うことが不要となる。すなわち、トレイ部材１０に対するカバー部材２０の位置及びガスケット３０の状態にそれぞれ注意しながら作業する必要性が従来に比べて低くなるため、作業性が向上する。   Moreover, since the position of the cover member 20 with respect to the tray member 10 can be regulated by the positioning pins 25 and the positioning holes 15, it is not necessary to perform the joining of the cover member 20 to the tray member 10 with high accuracy. That is, since the necessity of working while paying attention to the position of the cover member 20 with respect to the tray member 10 and the state of the gasket 30 is reduced as compared with the conventional case, workability is improved.

また、ガスケット３０は、トレイ部材１０とカバー部材２０との接合時に両者に押圧され圧縮変形できる軟質のガスケットで構成されているため、押圧力により変形してトレイ部材１０及びカバー部材２０の動きに追従し易く、高いシール性を確保することができる。また、位置決めピン２５は、カバー部材２０のトレイ部材１０への重ね合わせ時に、溝部１３内に予め配置されるガスケット３０の上側凸部３１がカバー部材２０とトレイ部材１０との両者に接触する前に、位置決め穴１５に進入するように長さ設定されているため、位置決めピン２５によりトレイ部材１０に対するカバー部材２０の移動を規制してからカバー部材２０がガスケット３０に接触する。これにより、ガスケット３０への水平方向の力の作用をより防ぐことができ、ガスケット３０を適正な状態のまま圧縮変形させることができる。   Further, since the gasket 30 is composed of a soft gasket that can be pressed and deformed when the tray member 10 and the cover member 20 are joined to each other, the gasket 30 is deformed by the pressing force to cause movement of the tray member 10 and the cover member 20. It is easy to follow and high sealing performance can be secured. The positioning pin 25 is positioned before the upper convex portion 31 of the gasket 30 disposed in advance in the groove portion 13 comes into contact with both the cover member 20 and the tray member 10 when the cover member 20 is superimposed on the tray member 10. Further, since the length is set so as to enter the positioning hole 15, the movement of the cover member 20 relative to the tray member 10 is restricted by the positioning pin 25, and then the cover member 20 contacts the gasket 30. Thereby, the action of the horizontal force on the gasket 30 can be further prevented, and the gasket 30 can be compressed and deformed in an appropriate state.

また、長手方向を有するカバー部材２０は、長手方向に反り返って変形し易いため、長手方向両端部にそれぞれ位置決めピン２５及び位置決め穴１５を設けることにより、この変形を抑制しながらトレイ部材１０とカバー部材２０とを接合することができる。なお、ここでいう反り返るとは、長手方向両端部が図２（ａ）において中間部よりも上方に変位することをいう。   Further, since the cover member 20 having the longitudinal direction is easily deformed by being warped in the longitudinal direction, the tray member 10 and the cover are suppressed while suppressing the deformation by providing the positioning pins 25 and the positioning holes 15 at both ends in the longitudinal direction. The member 20 can be joined. Here, the term “warping” means that both end portions in the longitudinal direction are displaced above the intermediate portion in FIG.

また、位置決め穴１５が、トレイ部材１０のリブ１１ｆ，１１ｇ上であって周壁１１の内側に形成された肉盛り部１６に設けられているため、トレイ部材１０上におけるバッテリモジュール２のレイアウトに影響を与えるおそれがない。
また、位置決め穴１５の一方が基準穴１５ａ、他方が長穴である逃げ穴１５ｂとして構成されているため、トレイ部材１０にカバー部材２０を重ね合わせるときに、長手方向両端部にそれぞれ設けられた位置決めピン２５を、それぞれの位置決め穴１５に容易に挿入することができる。特に、カバー部材２０が長手方向に反り返っている場合、他方の位置決め穴１５に逃げスペースを設けることにより、スムーズに位置決め穴１５に位置決めピン２５を挿入することができる。 In addition, since the positioning hole 15 is provided in the built-up portion 16 formed on the ribs 11f and 11g of the tray member 10 and inside the peripheral wall 11, the layout hole 15 affects the layout of the battery module 2 on the tray member 10. There is no risk of giving.
Further, since one of the positioning holes 15 is configured as a reference hole 15a and the other is a clearance hole 15b having a long hole, the positioning holes 15 are provided at both ends in the longitudinal direction when the cover member 20 is overlapped with the tray member 10. The positioning pins 25 can be easily inserted into the respective positioning holes 15. In particular, when the cover member 20 is warped in the longitudinal direction, the positioning pin 25 can be smoothly inserted into the positioning hole 15 by providing a clearance space in the other positioning hole 15.

以上、本発明の実施形態を説明したが、本発明は上記実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形することが可能である。
例えば、上記実施形態では、位置決め穴１５が、トレイ部材１０の幅方向中心から左にシフトした位置に設けられているが、位置決め穴１５の位置はこれに限られず、例えば幅方向中心であってもよく、右側にシフトしていてもよい。また、位置決め穴１５は、トレイ部材１０の長手方向両端部に設けられていることが好ましいが、幅方向両端部に設けられていてもよい。なお、位置決めピン２５に関しても同様である。 Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.
For example, in the above-described embodiment, the positioning hole 15 is provided at a position shifted to the left from the center in the width direction of the tray member 10. However, the position of the positioning hole 15 is not limited to this, for example, the center in the width direction. It may also be shifted to the right. The positioning holes 15 are preferably provided at both ends in the longitudinal direction of the tray member 10, but may be provided at both ends in the width direction. The same applies to the positioning pin 25.

また、位置決め穴１５は、リブ１１ｆ，１１ｇ上に限られず、バッテリモジュール２のレイアウトに影響しない場所であればよい。また、位置決め穴１５の大きさや形状も上記実施形態に限られず、例えば、２つの位置決め穴１５が同一形状であってもよい。また、位置決めピン２５の長さや形状も上記実施形態に限られない。
また、トレイ部材１０及びカバー部材２０の形状が、例えば正方形のように長手方向が規定できないような形状である場合は、位置決め穴１５及び位置決めピン２５は、いずれの方向の両端部に設けてもよい。 In addition, the positioning hole 15 is not limited to the ribs 11f and 11g, and may be any place that does not affect the layout of the battery module 2. Further, the size and shape of the positioning hole 15 are not limited to the above embodiment, and for example, the two positioning holes 15 may have the same shape. Further, the length and shape of the positioning pin 25 are not limited to the above embodiment.
In addition, when the shape of the tray member 10 and the cover member 20 is a shape that cannot define the longitudinal direction such as a square, for example, the positioning hole 15 and the positioning pin 25 may be provided at both ends in any direction. Good.

また、ガスケット３０の形状も一例であって、上記実施形態で詳述したものに限られず、圧縮変形されるものであればよい。また、環状の溝部１３の形状は上記実施形態のものに限られず、ガスケット３０の形状に応じて、深溝部１３ａが形成されていないものであってもよく、また、カバー部材２０に形成されていてもよい。   Further, the shape of the gasket 30 is also an example, and is not limited to the one described in detail in the above embodiment, and may be any one that is compressed and deformed. Further, the shape of the annular groove 13 is not limited to that of the above embodiment, and the deep groove 13 a may not be formed according to the shape of the gasket 30, and is formed on the cover member 20. May be.

１ バッテリケース
２ バッテリモジュール（バッテリ）
１０ トレイ部材
１２ トレイ側フランジ部
１３ 溝部
１３ａ 深溝部
１４ トレイ側接合面
１５ 位置決め穴
１５ａ 基準穴（位置決め穴）
１５ｂ 逃げ穴（位置決め穴）
１６ トレイ側肉盛り部
１７ リブ
２０ カバー部材
２２ カバー側フランジ部
２４ カバー側接合面
２５ 位置決めピン
３０ ガスケット 1 Battery case 2 Battery module (battery)
DESCRIPTION OF SYMBOLS 10 Tray member 12 Tray side flange part 13 Groove part 13a Deep groove part 14 Tray side joint surface 15 Positioning hole 15a Reference hole (positioning hole)
15b Escape hole (positioning hole)
16 Tray side build-up part 17 Rib 20 Cover member 22 Cover side flange part 24 Cover side joint surface 25 Positioning pin 30 Gasket

Claims (3)

電気自動車の駆動用のバッテリを収容するバッテリケースであって、
前記バッテリを支持するトレイ部材と、
前記トレイ部材の上に重ねて前記トレイ部材に固定されるカバー部材と、
前記トレイ部材と前記カバー部材との間に介装されるガスケットと、を備え、
前記カバー部材は、前記ガスケット近傍に前記カバー部材と前記トレイ部材との接合方向に沿って突設される位置決めピンを有し、
前記トレイ部材は、前記接合方向に沿って穿設され、前記位置決めピンが挿入される位置決め穴を有し、
前記位置決めピンは、前記カバー部材の長手方向両端部にそれぞれ設けられ、
前記位置決め穴は、前記トレイ部材の長手方向両端部にそれぞれ形成されるとともに、前記トレイ部材の前記長手方向一端部に設けられた基準穴と、前記トレイ部材の前記長手方向他端部に設けられ、前記カバー部材の前記長手方向への相対移動を許容する逃げ穴とから構成される
ことを特徴とする、バッテリケース。 A battery case that houses a battery for driving an electric vehicle,
A tray member for supporting the battery;
A cover member that is overlaid on the tray member and fixed to the tray member;
A gasket interposed between the tray member and the cover member,
The cover member has a positioning pin that protrudes in the vicinity of the gasket along the joining direction of the cover member and the tray member,
The tray member is bored along the welding direction, it has a positioning hole in which the positioning pins are inserted,
The positioning pins are provided at both longitudinal ends of the cover member,
The positioning holes are respectively formed at both ends in the longitudinal direction of the tray member, and are provided at a reference hole provided at one end in the longitudinal direction of the tray member and at the other end in the longitudinal direction of the tray member. characterized by Rukoto is composed of a relief hole which permits relative movement in the said longitudinal direction of said cover member, the battery case. 前記ガスケットは、前記トレイ部材及び前記カバー部材の何れかに形成された環状溝部内に配置され、前記カバー部材と前記トレイ部材との接合時に両者に押圧され圧縮変形することによって、前記環状溝部内に収納され、
前記位置決めピンは、前記カバー部材の前記トレイ部材への重ね合わせ時に前記環状溝部内に配置される前記ガスケットが前記カバー部材と前記トレイ部材との両者に接触する前に、前記位置決め穴に進入するように長さ設定されている
ことを特徴とする、請求項１記載のバッテリケース。 The gasket is disposed in an annular groove formed in one of the tray member and the cover member, and is pressed against the cover member and the tray member when they are joined to each other, thereby compressively deforming the gasket. Stored in
The positioning pin enters the positioning hole before the gasket disposed in the annular groove portion contacts both the cover member and the tray member when the cover member is superposed on the tray member. The battery case according to claim 1, wherein the length is set as follows. 前記トレイ部材は、前記トレイ部材上を複数の区画に仕切るリブを有し、
前記位置決め穴は、前記トレイ部材の前記リブ上にそれぞれ形成されている
ことを特徴とする、請求項１又は２記載のバッテリケース。 The tray member has ribs that partition the tray member into a plurality of sections,
The positioning hole is characterized by being formed respectively on the ribs of the tray member, according to claim 1 or 2 battery case according.
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