JP2014075348A - Battery case for vehicles - Google Patents

Battery case for vehicles Download PDF

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Publication number
JP2014075348A
JP2014075348A JP2013231129A JP2013231129A JP2014075348A JP 2014075348 A JP2014075348 A JP 2014075348A JP 2013231129 A JP2013231129 A JP 2013231129A JP 2013231129 A JP2013231129 A JP 2013231129A JP 2014075348 A JP2014075348 A JP 2014075348A
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Prior art keywords
tray
cover
peripheral edge
side peripheral
battery case
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Wen Leon Lu
ウェン レオン ルー
Taketaka Fujiwara
雄高 藤原
Hideki Yoshioka
秀記 吉岡
Yasuhiro Inoue
靖浩 井上
Fumihiro Ogata
文博 緒方
Seiichi Takasaki
静一 高崎
Hideki Honjo
英喜 本城
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Mitsubishi Motors Corp
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Mitsubishi Motors Corp
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Priority to JP2013231129A priority Critical patent/JP2014075348A/en
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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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  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a battery case for vehicles capable of suppressing resin deformation in a tray member and a cover member and of stabilizing fixation between the tray member and the cover member, in the case that the tray member and the cover member configured by resin are fixed.SOLUTION: A battery case for vehicles comprises: a tray member (20) formed of resin and configured by a holding part and a tray side peripheral edge part (32); a cover member (22) formed of resin and configured by a cover part and a cover side peripheral edge part (33); a metal first holding member (24) contacting with the tray side peripheral edge part, and provided so that one end extends radially outward from the tray side peripheral edge part by a predetermined distance; and a metal second holding member (26) contacting with the cover side peripheral edge part, and provided so that one end extends radially outward from the cover side peripheral edge part by a predetermined distance.

Description

本発明は、車両用バッテリケースに係り、詳しくは電動車両を駆動するバッテリを収納するためのバッテリケースに関するものである。   The present invention relates to a vehicle battery case, and more particularly to a battery case for storing a battery that drives an electric vehicle.

近年、大容量のバッテリが搭載され、当該バッテリの電力で駆動される駆動モータを動力源の１つとするハイブリッド車や電気自動車が広く開発されている。
このような電動車両に搭載されるバッテリケースは、一例としてバッテリモジュールを収納するトレイ部材と、トレイ部材を覆うカバー部材とから構成される。このように構成されるバッテリケースは、トレイ部材とカバー部材とを固定する必要がある。 In recent years, hybrid vehicles and electric vehicles that have a large-capacity battery and that use a drive motor driven by the power of the battery as one of the power sources have been widely developed.
A battery case mounted on such an electric vehicle includes, as an example, a tray member that houses a battery module and a cover member that covers the tray member. The battery case configured as described above needs to fix the tray member and the cover member.

トレイ部材とカバー部材とを固定する方法として、例えば特許文献１には、トレイ部材とカバー部材の接合部において、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、当該埋め込みボルトにナットを嵌め合わせて締結するとともに、カバー部材の上方からボルトを当該埋め込みナットに挿入して締結する構成が開示されている。
そして、リチウムイオン電池は防水性が要求されるため、カバー部材とトレイ部材との接合部の周縁部に防水用のシール部材を設ける構成としている。これにより、接合部からの水の浸入を防いでいる。 As a method of fixing the tray member and the cover member, for example, in Patent Document 1, an embedded bolt and an embedded nut are provided in the tray member at the joint between the tray member and the cover member, and the nut is fitted to the embedded bolt and fastened. In addition, a configuration is disclosed in which a bolt is inserted into the embedded nut from above the cover member and fastened.
Since the lithium ion battery is required to be waterproof, a waterproof seal member is provided at the periphery of the joint between the cover member and the tray member. This prevents water from entering from the joint.

特開２００９−８７６４５号公報JP 2009-87645 A

しかしながら、上記特許文献１に開示された技術では、トレイ部材及びカバー部材は樹脂で構成されているため、トレイ部材及びカバー部材を締結しているボルト間の樹脂が冷熱温度の影響により変形してしまい、シール性及び防水性が低下するという問題がある。
また、当該変形を抑えるために、ボルト間の間隔をより短くして締結することもできるが、この場合は締結するボルトの数が多くなるために工数が多くかかり、好ましいことではない。 However, in the technique disclosed in Patent Document 1, since the tray member and the cover member are made of resin, the resin between the bolts that fasten the tray member and the cover member is deformed by the influence of the cold temperature. As a result, there is a problem that the sealing performance and the waterproof performance are deteriorated.
Moreover, in order to suppress the said deformation | transformation, although the space | interval between bolts can be shortened and it can also fasten, in this case, since the number of the bolts to fasten increases, a man-hour takes a lot and is not preferable.

さらに、埋め込みナットにボルトを挿入して締め付ける場合、所定の締め付けトルクより大きいトルクで締結すると埋め込みナットが空回りしてしまい、逆に締め付けトルクが所定の値よりも小さくなるとボルトが緩むため、締め付けトルクの上下限値管理が必要となり、好ましいことではない。
本発明は、上述した課題を解決すべくなされたものであり、その目的とするところは、樹脂で構成されたトレイ部材とカバー部材とを固定する場合において、トレイ部材やカバー部材の樹脂変形を抑制できるとともにトレイ部材とカバー部材との固定を安定化させることのできる車両用バッテリケースを提供することにある。 Furthermore, when a bolt is inserted into an embedded nut and tightened, if the tightening torque is larger than the predetermined tightening torque, the embedded nut will run idle, and conversely, if the tightening torque becomes smaller than the predetermined value, the bolt will loosen. Therefore, it is not preferable to manage the upper and lower limit values.
The present invention has been made to solve the above-described problems, and the object of the present invention is to perform resin deformation of the tray member and the cover member when fixing the tray member and the cover member made of resin. An object of the present invention is to provide a vehicle battery case that can be suppressed and can stabilize the fixation between a tray member and a cover member.

上記の目的を達成するべく、請求項１の車両用バッテリケースは、車両を駆動するバッテリを収納する車両用バッテリケースにおいて、樹脂で構成されるとともに前記バッテリを保持する保持部と、該保持部から径方向外側に延設されるトレイ側周縁部とで構成されたトレイ部材と、樹脂で構成されるとともに前記バッテリを覆うカバー部と、該カバー部から径方向外側に延設され前記トレイ側周縁部と重なり合うカバー側周縁部とから構成されたカバー部材と、前記トレイ側周縁部に接触して配置され、一端が前記トレイ側周縁部から径方向外側へ所定距離延びて設けられる金属製の第１狭持部材と、前記カバー側周縁部に接触して配置され、一端が前記カバー側周縁部から径方向外側へ所定距離延びて設けられる金属製の第２狭持部材とを備えたことを特徴とする。   In order to achieve the above object, a vehicle battery case according to claim 1 is a vehicle battery case for storing a battery for driving a vehicle. The vehicle battery case is made of resin and holds the battery, and the holding portion. A tray member that is configured to extend radially outward from the tray side periphery, a cover that is made of resin and covers the battery, and extends radially outward from the cover to the tray side A cover member composed of a cover-side peripheral edge that overlaps with the peripheral edge, and a metal member provided in contact with the tray-side peripheral edge and having one end extending radially outward from the tray-side peripheral edge by a predetermined distance. A first holding member, and a metal second holding member that is disposed in contact with the cover-side peripheral edge and has one end extending a predetermined distance radially outward from the cover-side peripheral edge. Characterized by comprising.

請求項２の車両用バッテリケースでは、請求項１において、前記第１及び第２狭持部材の少なくともいずれか一方には、対応する前記トレイ側周縁部または前記カバー側周縁部との接触位置から離反する方向に屈曲する屈曲部が形成されていることを特徴とする。
請求項３の車両用バッテリケースでは、請求項１または２において、前記トレイ側周縁部及び前記カバー側周縁部の少なくともいずれか一方に配設された１つ以上の凸部をさらに備え、該凸部は前記屈曲部により覆われることを特徴とする。 According to a vehicle battery case of a second aspect of the present invention, in the first aspect, at least one of the first and second pinching members has a contact position with the corresponding peripheral portion on the tray side or the peripheral portion on the cover side. A bent portion that is bent in the direction of separating is formed.
According to a third aspect of the present invention, there is provided a battery case for a vehicle according to the first or second aspect, further comprising one or more convex portions disposed on at least one of the tray-side peripheral portion and the cover-side peripheral portion. The portion is covered with the bent portion.

請求項４の車両用バッテリケースでは、請求項１乃至３のいずれかにおいて、前記トレイ側周縁部に、周方向に沿って所定の間隔で形成されるとともに前記トレイ側周縁部と前記保持部とを接合するリブをさらに備えることを特徴とする。
請求項５の車両用バッテリケースでは、請求項１乃至４のいずれかにおいて、前記トレイ側周縁部と前記カバー側周縁部とが重なり合う重合部を密閉するシール部材をさらに備え、該シール部材は前記第１及び第２狭持部材により狭持される前記トレイ側周縁部と前記カバー側周縁部との接触位置に対応して設けられることを特徴とする。 According to a fourth aspect of the present invention, there is provided the vehicle battery case according to any one of the first to third aspects, wherein the tray-side peripheral portion is formed at a predetermined interval along the circumferential direction, and the tray-side peripheral portion and the holding portion are provided. It is further characterized by further comprising a rib for joining.
According to a fifth aspect of the present invention, there is provided the vehicle battery case according to any one of the first to fourth aspects, further comprising a sealing member that seals the overlapping portion where the tray-side peripheral portion and the cover-side peripheral portion overlap each other. It is provided corresponding to the contact position of the tray side peripheral edge portion and the cover side peripheral edge portion held by the first and second holding members.

請求項１の車両用バッテリケースによれば、トレイ側周縁部に金属製の第１狭持部材が、カバー側周縁部に金属製の第２狭持部材がそれぞれ接触して設けられ、第１狭持部材と第２狭持部材との一端は各周縁部から径方向外側へ所定距離延びて設けられている。
このように、トレイ部材に第１狭持部材、カバー部材に金属製の第２狭持部材をそれぞれ配置することにより、トレイ側周縁部を第１狭持部材、カバー側周縁部を第２持部材でそれぞれ押さえるようにして冷熱温度の影響による樹脂の変形を防止するので、バッテリケースのシール性を向上させることができる。 According to the vehicle battery case of the first aspect, the first holding member made of metal is provided in contact with the peripheral edge portion on the tray side, and the second holding member made of metal is provided in contact with the peripheral edge portion on the cover side. One ends of the sandwiching member and the second sandwiching member are provided so as to extend a predetermined distance outward from each peripheral portion in the radial direction.
In this manner, by arranging the first holding member on the tray member and the second holding member made of metal on the cover member, the tray side peripheral portion is the first holding member and the cover side peripheral portion is the second holding member. Since the resin is prevented from being deformed by the influence of the cold temperature by being pressed by the members, the sealing performance of the battery case can be improved.

請求項２の車両用バッテリケースによれば、第１及び第２狭持部材の少なくともいずれか一方には、第１または第２狭持部材に対応するトレイ側周縁部またはカバー側周縁部との接触位置から離反する方向に屈曲する屈曲部が形成されているので、屈曲部が弾性変形して対応する周縁部を押圧することにより、バッテリケースのシール性を向上させることができる。   According to the vehicle battery case of claim 2, at least one of the first and second holding members has a tray side peripheral edge or a cover side peripheral edge corresponding to the first or second holding member. Since the bent portion that is bent in the direction away from the contact position is formed, the sealing portion of the battery case can be improved by pressing the corresponding peripheral portion by elastically deforming the bent portion.

請求項３の車両用バッテリケースによれば、トレイ側周縁部及びカバー側周縁部の少なくともいずれか一方に１つ以上の凸部が配設されており、屈曲部により凸部が覆われるので、第１または第２狭持部材に周縁部から引き離す方向へ力がかかる場合でも、屈曲部が凸部に引っ掛かることによって凸部が抵抗部材として作用して第１または第２狭持部材がカバー部材及びトレイ部材の周縁部から抜けることを防止することができ、バッテリケースのシール性を向上させることができる。   According to the vehicle battery case of the third aspect, one or more convex portions are disposed on at least one of the tray side peripheral portion and the cover side peripheral portion, and the convex portion is covered by the bent portion. Even when a force is applied to the first or second holding member in a direction away from the peripheral portion, the convex portion acts as a resistance member when the bent portion is hooked on the convex portion, and the first or second holding member becomes the cover member. And it can prevent coming off from the peripheral part of a tray member, and can improve the sealing performance of a battery case.

請求項４の車両用バッテリケースによれば、トレイ側周縁部にトレイ側周縁部と保持部とを接合するリブが周方向に沿って所定の間隔で設けられるので、トレイ部材の剛性が高くなり、バッテリケース全体の強度を強くすることができる。
請求項５の車両用バッテリケースによれば、第１及び第２狭持部材により狭持されるトレイ側周縁部及びカバー側周縁部が重なり合う重合部にシール部材が配置して設けられることにより、第１及び第２狭持部材が締結されることにより周縁部を押さえつける力がシール部材に伝わりやすくなり、効果的に接触面をシールすることができ、バッテリケースのシール性を向上させることができる。 According to the vehicle battery case of the fourth aspect, since the rib that joins the tray side peripheral portion and the holding portion to the tray side peripheral portion is provided at predetermined intervals along the circumferential direction, the rigidity of the tray member is increased. The strength of the entire battery case can be increased.
According to the vehicle battery case of claim 5, the seal member is disposed and provided in the overlapping portion where the tray side peripheral portion and the cover side peripheral portion are overlapped by the first and second holding members, When the first and second holding members are fastened, the force for pressing the peripheral portion is easily transmitted to the sealing member, the contact surface can be effectively sealed, and the sealing performance of the battery case can be improved. .

本発明に係るバッテリケースが載置された電気自動車の斜視図である。1 is a perspective view of an electric vehicle on which a battery case according to the present invention is placed. 図１に示したバッテリケースの概略構成図である。It is a schematic block diagram of the battery case shown in FIG. 図２に示したバッテリケースの分解斜視図である。FIG. 3 is an exploded perspective view of the battery case shown in FIG. 2. 図２のＡ−Ａ線に沿う縦断面の拡大図である。FIG. 3 is an enlarged view of a longitudinal section taken along line AA in FIG. 2. 図２のＢ−Ｂ線に沿う縦断面の拡大図である。FIG. 3 is an enlarged view of a longitudinal section taken along line BB in FIG. 2.

以下、本発明の一実施形態について図面を参照しながら説明する。
図１は、本発明に係るバッテリケースが搭載された電気自動車用の斜視図である。
図１に示すように、電気自動車１は車体２の床下に載置されたバッテリケース１０と、図示しないが外部からの充電経路とを備えており、当該充電経路から電力の供給を受けて充電を行う充電器１２が車体２の後部に配置され、バッテリケース１０は充電器１２に接続されて蓄電するように構成されている。 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view for an electric vehicle equipped with a battery case according to the present invention.
As shown in FIG. 1, the electric vehicle 1 includes a battery case 10 placed under the floor of the vehicle body 2 and a charging path (not shown) from the outside, and is charged by receiving electric power from the charging path. A charger 12 that performs charging is disposed at the rear of the vehicle body 2, and the battery case 10 is configured to be connected to the charger 12 to store electricity.

図２に示すように、バッテリケース１０は樹脂トレイ（トレイ部材）２０とカバー（カバー部材）２２と、樹脂トレイ２０の外周を覆う第１板金プレート（第１狭持部材）２４と、カバー２２の周縁を覆う第２板金プレート（第２狭持部材）２６と、第１及び第２板金プレート２４、２６を締結するボルト２８及びナット５０とから構成されている。なお、ナット５０は、第１板金プレート２４または第２板金プレート２６のいずれかに溶接されるウエルドナットでもよい。   As shown in FIG. 2, the battery case 10 includes a resin tray (tray member) 20, a cover (cover member) 22, a first sheet metal plate (first holding member) 24 that covers the outer periphery of the resin tray 20, and a cover 22. The second sheet metal plate (second holding member) 26 that covers the periphery of the first sheet metal plate 26, and the bolt 28 and the nut 50 that fasten the first and second sheet metal plates 24, 26. The nut 50 may be a weld nut welded to either the first sheet metal plate 24 or the second sheet metal plate 26.

詳しくは、図３にバッテリケース１０の分解斜視図を示すように、樹脂トレイ２０の保持部２１にはバッテリモジュール３０が複数配置されて設けられている。樹脂トレイ２０の外周には第１板金プレート２４が接触して配置されて設けられており、第１板金プレート２４の一端は、樹脂トレイ２０の径方向外側にトレイ側周縁部３２よりも所定の長さ延びて形成されており、トレイ側周縁部３２の径方向外側の所定位置には所定の間隔で貫通孔３４が形成されている。   Specifically, as shown in an exploded perspective view of the battery case 10 in FIG. 3, a plurality of battery modules 30 are provided in the holding portion 21 of the resin tray 20. A first sheet metal plate 24 is provided on the outer periphery of the resin tray 20 so as to be in contact therewith, and one end of the first sheet metal plate 24 is located on a radially outer side of the resin tray 20 with a predetermined distance from the tray side peripheral portion 32. The through holes 34 are formed at predetermined intervals at predetermined positions on the radially outer side of the tray side peripheral edge 32.

樹脂トレイ２０の接触面３６はカバー２２の接触面４０と重なり接する。なお、樹脂トレイ２０やカバー２２は電気絶縁性を有する樹脂により成形されている。
カバー２２は、バッテリモジュール３０を覆うカバー部２３と、トレイ側周縁部３２と重なり合わさるカバー側周縁部３３とから構成される。カバー側周縁部３３には第２板金プレートが接触して配置されて設けられており、第２板金プレート２６の一端は、カバー２２の径方向外側にカバー側周縁部３３よりも所定の長さ延びて形成されており、カバー側周縁部３３の径方向外側の所定位置には第１板金プレート２４に形成された貫通孔３４と重なり合わさる所定の位置に貫通孔４８が形成されている。 The contact surface 36 of the resin tray 20 overlaps and contacts the contact surface 40 of the cover 22. The resin tray 20 and the cover 22 are formed of a resin having electrical insulation.
The cover 22 includes a cover part 23 that covers the battery module 30 and a cover-side peripheral part 33 that overlaps the tray-side peripheral part 32. A second sheet metal plate is provided in contact with the cover side peripheral edge 33, and one end of the second sheet metal plate 26 has a predetermined length on the outer side in the radial direction of the cover 22 than the cover side peripheral edge 33. A through hole 48 is formed at a predetermined position overlapping the through hole 34 formed in the first sheet metal plate 24 at a predetermined position on the radially outer side of the cover side peripheral edge portion 33.

図４に図２のＡ−Ａ線に沿う縦断面図を示すように、樹脂トレイ２０の接触面３６の背面５２には、背面端から外壁５４に向かってリブ５６が延びて設けられており、リブ５６はトレイ側周縁部３２と保持部２１とを接合する。リブ５６の下端には第１板金プレート２４が接するように設けられている。そして、第１板金プレート２４の他端は、樹脂トレイ２０の底壁５８に延びて設けられている。   As shown in FIG. 4 which is a longitudinal sectional view taken along the line AA in FIG. 2, ribs 56 are provided on the back surface 52 of the contact surface 36 of the resin tray 20 so as to extend from the back end toward the outer wall 54. The rib 56 joins the tray side peripheral edge portion 32 and the holding portion 21 together. The first sheet metal plate 24 is provided in contact with the lower end of the rib 56. The other end of the first sheet metal plate 24 is provided extending to the bottom wall 58 of the resin tray 20.

カバー２２の接触面４０の背面４２には背面端に凸部４４が突出して形成されており、一方、第２板金プレート２６には凸部４４を覆う屈曲部４６が設けられており、屈曲部４６はカバー側周縁部３３との接触位置から離反する方向に屈曲して形成されている。第２板金プレート２６は凸部４４を屈曲部４６で覆うように形成されており、第２板金プレート２６の他端は、折り曲げられてカバー側周縁部３３の背面４２に当接して設けられている。   On the back surface 42 of the contact surface 40 of the cover 22, a convex portion 44 protrudes from the rear end, while the second sheet metal plate 26 is provided with a bent portion 46 that covers the convex portion 44. 46 is bent in a direction away from the contact position with the cover side peripheral edge 33. The second sheet metal plate 26 is formed so as to cover the convex portion 44 with the bent portion 46, and the other end of the second sheet metal plate 26 is bent and provided in contact with the back surface 42 of the cover side peripheral edge portion 33. Yes.

トレイ側周縁部３２とカバー側周縁部が重なり合わさる重合部３７には防水用のシール部材３８が配置して設けられており、シール部材３８は樹脂トレイ２０及びカバー２２が第１板金プレート２４及び第２板金プレート２６により狭持される所定位置に配置される。なお、シール部材３８は、例えば樹脂系のシール部材であるが、必要な防水性を得られるものであればこれに限られない。   A waterproof seal member 38 is disposed in the overlapping portion 37 where the tray side peripheral portion 32 and the cover side peripheral portion overlap each other. The seal member 38 includes the resin tray 20 and the cover 22 as the first sheet metal plate 24 and The second sheet metal plate 26 is disposed at a predetermined position. The sealing member 38 is, for example, a resin-based sealing member, but is not limited to this as long as necessary waterproofness can be obtained.

そして、第１板金プレート２４及び第２板金プレート２６は、貫通孔３４、４８にボルト２８を貫通させ、ボルト２８にナット５０に嵌め合わせて締結されている。これにより、トレイ側周縁部３２とカバー側周縁部３３とが第１板金プレート２４及び第２板金プレート２６によって狭持される。   The first sheet metal plate 24 and the second sheet metal plate 26 are fastened by fitting the bolts 28 through the through holes 34 and 48 and fitting the nuts 50 to the bolts 28. Thereby, the tray side peripheral edge portion 32 and the cover side peripheral edge portion 33 are held between the first sheet metal plate 24 and the second sheet metal plate 26.

図５に図２のＢ−Ｂ線に沿う横断面図を示すように、カバー側周縁部３３の背面４２に形成された凸部４４及びトレイ側周縁部３２の背面５２に形成されたリブ５６はそれぞれ所定の間隔で配置されている。そして、第１板金プレート２４及び第２板金プレート２６は、ボルト２８及びナット５０により所定の間隔Ｌを有して締結され、トレイ側周縁部３２とカバー側周縁部３３とを狭持している。   As shown in a cross-sectional view taken along the line BB in FIG. 2, the ribs 56 formed on the back surface 52 of the tray side peripheral edge portion 32 and the convex portion 44 formed on the back surface 42 of the cover side peripheral edge portion 33. Are arranged at predetermined intervals. The first sheet metal plate 24 and the second sheet metal plate 26 are fastened by a bolt 28 and a nut 50 with a predetermined interval L, and the tray side peripheral edge portion 32 and the cover side peripheral edge portion 33 are sandwiched. .

このように、本発明に係る電気自動車用バッテリケースによれば、樹脂トレイ２０の外周には第１板金プレート２４が、カバー側周縁部３３の背面４２には第２板金プレート２６がそれぞれ配置されて設けられている。そして、第１及び第２板金プレート２４、２６の一端は、それぞれ樹脂トレイ２０、カバー２２の径方向外側に周縁部３２よりも所定の長さ延びて形成され、トレイ側周縁部３２の径方向外側の所定位置の第１板金プレート２４に穿設された貫通孔３４と合わさる位置に第２板金プレート２６の貫通孔４８が穿設されており、貫通孔３４、４８へボルト２８を貫通させ、ボルト２８にナット５０を嵌め合わせる。これにより第１及び第２板金プレート２４、２６が締結され、トレイ側周縁部３２とカバー側周縁部３３とがこれら第１板金プレート２４及び第２板金プレート２６によって狭持される。   Thus, according to the battery case for an electric vehicle according to the present invention, the first sheet metal plate 24 is disposed on the outer periphery of the resin tray 20, and the second sheet metal plate 26 is disposed on the back surface 42 of the cover side peripheral edge 33. Is provided. One end of each of the first and second sheet metal plates 24 and 26 is formed to extend outside the resin tray 20 and the cover 22 in the radial direction by a predetermined length from the peripheral edge portion 32, and the radial direction of the tray side peripheral edge portion 32. A through hole 48 of the second sheet metal plate 26 is formed at a position where it is combined with the through hole 34 formed in the first sheet metal plate 24 at a predetermined position on the outer side, and the bolt 28 is passed through the through holes 34, 48. The nut 50 is fitted to the bolt 28. As a result, the first and second sheet metal plates 24 and 26 are fastened, and the tray side peripheral edge portion 32 and the cover side peripheral edge portion 33 are sandwiched by the first sheet metal plate 24 and the second sheet metal plate 26.

従って、トレイ側周縁部３２及びカバー側周縁部３３が重なり合う重合部３７方向へ押圧する力が作用することにより、トレイ側周縁部３２及びカバー側周縁部３３を第１及び第２板金プレート２４、２６で押さえるので、バッテリケース１０を取りまく環境の温度変化により樹脂トレイ２０及びカバー２２の周縁部３２が変形することを防止することができ、バッテリケース１０のシール性を向上させることができる。   Accordingly, when the force pressing toward the overlapping portion 37 where the tray side peripheral edge portion 32 and the cover side peripheral edge portion 33 overlap is applied, the tray side peripheral edge portion 32 and the cover side peripheral edge portion 33 are connected to the first and second sheet metal plates 24, Therefore, the resin tray 20 and the peripheral edge portion 32 of the cover 22 can be prevented from being deformed by the temperature change of the environment surrounding the battery case 10, and the sealing performance of the battery case 10 can be improved.

また、第１板金プレート２４及び第２板金プレート２６の一端は樹脂トレイ２０及びカバー２２の径方向外側に周縁部３２より所定の長さ延びて形成されており、トレイ側周縁部３２及びカバー側周縁部３３の径方向外側の所定位置でボルト２８及びナット５０により締結するようにしている。
即ち、ボルト２８及びナット５０で締結される締結部では樹脂で構成された樹脂トレイ２０とカバー２２とを狭持していないので、締結後の第１及び第２板金プレート２４、２６の剛性は高く、ボルト２８及びナット５０で締結する間隔Ｌをより長くすることが可能である。これにより、コストを低減することができるとともに生産性を向上させることができる。 One end of each of the first sheet metal plate 24 and the second sheet metal plate 26 is formed to extend a predetermined length from the peripheral edge 32 outside the resin tray 20 and the cover 22 in the radial direction. The bolt 28 and the nut 50 are fastened at a predetermined position radially outside the peripheral edge 33.
That is, since the fastening portion fastened by the bolt 28 and the nut 50 does not hold the resin tray 20 and the cover 22 made of resin, the rigidity of the first and second sheet metal plates 24 and 26 after fastening is as follows. It is high, and it is possible to make the space | interval L fastened with the volt | bolt 28 and the nut 50 longer. Thereby, cost can be reduced and productivity can be improved.

さらに、第１及び第２板金プレート２４、２６をボルト２８及びナット５０により締結しており、埋め込みナットを使用しないため、締め付けトルクが安定化することで締め付けトルクの上下限値を広く取ることができる。これにより、トルク管理が容易になり、生産性をより向上させることができる。
また、第２板金プレート２６に形成された屈曲部４６はカバー側周縁部との接触位置から離反する方向に屈曲しているので、屈曲部４６が弾性変形してカバー側周縁部３３を押圧することにより、バッテリケース１０のシール性を向上させることができる。 Furthermore, since the first and second sheet metal plates 24 and 26 are fastened by bolts 28 and nuts 50 and no embedded nuts are used, the upper and lower limits of the tightening torque can be widened by stabilizing the tightening torque. it can. Thereby, torque management becomes easy and productivity can be improved more.
Further, since the bent portion 46 formed on the second sheet metal plate 26 is bent in a direction away from the contact position with the cover side peripheral edge portion, the bent portion 46 is elastically deformed and presses the cover side peripheral edge portion 33. Thereby, the sealing performance of the battery case 10 can be improved.

また、カバー２２の接触面４０の背面４２には所定の間隔で凸部４４が突出して設けられ、凸部４４は第２板金プレート２６に形成された屈曲部４６によって覆われる。
このように構成されることにより、第２板金プレート２６に径方向外側への張力が働く場合であっても、屈曲部４６の壁が凸部４４に引っ掛かり、凸部４４が抵抗部材として機能する。これにより、第２板金プレート２６及び第２板金プレート２６に締結されている第１板金プレート２４が周縁部３２から抜けてしまうことを防止するので、バッテリケース１０のシール性を向上させることができる。 Further, convex portions 44 project from the back surface 42 of the contact surface 40 of the cover 22 at a predetermined interval, and the convex portions 44 are covered with a bent portion 46 formed on the second sheet metal plate 26.
By being configured in this way, even when the radial tension is applied to the second sheet metal plate 26, the wall of the bent portion 46 is caught by the convex portion 44, and the convex portion 44 functions as a resistance member. . Thus, the second sheet metal plate 26 and the first sheet metal plate 24 fastened to the second sheet metal plate 26 are prevented from coming off from the peripheral edge portion 32, so that the sealing performance of the battery case 10 can be improved. .

また、樹脂トレイ２０の接触面３６の背面５２には、所定の間隔で背面端から外壁５４へ向かってリブ５６が延びて設けられ、リブ５６はトレイ側周縁部３２と保持部２１とを接合することにより樹脂トレイ２０の剛性が高くなるので、バッテリケース１０の強度を強くすることができる。   In addition, ribs 56 are provided on the back surface 52 of the contact surface 36 of the resin tray 20 so as to extend from the back end toward the outer wall 54 at predetermined intervals, and the ribs 56 join the tray side peripheral edge portion 32 and the holding portion 21 together. By doing so, the rigidity of the resin tray 20 is increased, so that the strength of the battery case 10 can be increased.

さらに、トレイ側周縁部３２及びカバー側周縁部が重なり合う重合部３７の接触位置に対応した第１及び第２板金プレート２４、２６によって狭持される所定の位置にシール部材３８が配置されている。
即ち、第１及び第２板金プレート２４、２６によって重合部３７方向へ押圧する力が作用する所定の位置にシール部材３８が配置されるため、効果的に重合部３７をシールすることができ、バッテリケース１０のシール性を向上させることができる。 Further, a seal member 38 is disposed at a predetermined position sandwiched by the first and second sheet metal plates 24 and 26 corresponding to the contact position of the overlapping portion 37 where the tray side peripheral portion 32 and the cover side peripheral portion overlap. .
That is, since the sealing member 38 is disposed at a predetermined position where a force pressing in the direction of the overlapping portion 37 acts by the first and second sheet metal plates 24, 26, the overlapping portion 37 can be effectively sealed, The sealing performance of the battery case 10 can be improved.

以上で実施形態の説明を終えるが、本発明は上述した実施形態に限定されるものではない。
例えば、上記実施形態では第１板金プレート２４の他端は樹脂トレイ２０の底壁５８に延びて設けられており、第２板金プレート２６の他端はカバー２２の背面４２に接して延びて設けられるが、第１板金プレート２４で樹脂トレイ２０の外周全体を覆い、第２板金プレート２６でカバー２２の外周全体を覆うように構成してもよい。 Although the description of the embodiment is finished as described above, the present invention is not limited to the above-described embodiment.
For example, in the above embodiment, the other end of the first sheet metal plate 24 extends to the bottom wall 58 of the resin tray 20, and the other end of the second sheet metal plate 26 extends to contact the back surface 42 of the cover 22. However, the entire outer periphery of the resin tray 20 may be covered with the first sheet metal plate 24, and the entire outer periphery of the cover 22 may be covered with the second sheet metal plate 26.

そして、上記実施形態では、第２板金プレート２６に屈曲部４６を形成してカバー２２の接触面４０の背面４２に形成された凸部４４を覆うことにより、第１及び第２板金プレート２４、２６が樹脂トレイ２０及びカバー２２の周縁部３２から抜けてしまうことを防止しているが、樹脂トレイ２０に抜け防止用の凸部を設け、第１板金プレート２４に屈曲部を設ける構成にしてもよい。   And in the said embodiment, the 1st and 2nd sheet metal plate 24, by forming the bending part 46 in the 2nd sheet metal plate 26, and covering the convex part 44 formed in the back surface 42 of the contact surface 40 of the cover 22, 26 is prevented from coming off from the peripheral portion 32 of the resin tray 20 and the cover 22, but a convex portion for preventing the removal is provided on the resin tray 20 and a bent portion is provided on the first sheet metal plate 24. Also good.

また、上記実施形態では剛性を高くするため樹脂トレイ２０の背面５２にリブ５６を形成しているが、バッテリケース１０の剛性を保持することができればこれに限定されるものではない。
また、上記実施形態では電気自動車を例に説明したが、ハイブリッド車にも適用可能である。 Moreover, in the said embodiment, although the rib 56 is formed in the back surface 52 of the resin tray 20 in order to make rigidity high, if the rigidity of the battery case 10 can be hold | maintained, it will not be limited to this.
In the above embodiment, an electric vehicle has been described as an example, but the present invention can also be applied to a hybrid vehicle.

１ 電気自動車
１０ バッテリケース
２０ 樹脂トレイ（トレイ部材）
２２ カバー（カバー部材）
２４ 第１板金プレート（第１狭持部材）
２６ 第２板金プレート（第２狭持部材）
２８ ボルト
３２ トレイ側周縁部
３３ カバー側周縁部
３８ シール部材
４４ 凸部
４６ 屈曲部
５０ ナット
５６ リブ 1 Electric Vehicle 10 Battery Case 20 Resin Tray (Tray Member)
22 Cover (cover member)
24 1st sheet metal plate (first holding member)
26 Second sheet metal plate (second holding member)
28 Bolt 32 Tray side peripheral portion 33 Cover side peripheral portion 38 Seal member 44 Protruding portion 46 Bending portion 50 Nut 56 Rib

Claims (5)

車両を駆動するバッテリを収納する車両用バッテリケースにおいて、
樹脂で構成されるとともに前記バッテリを保持する保持部と、該保持部から径方向外側に延設されるトレイ側周縁部とで構成されたトレイ部材と、
樹脂で構成されるとともに前記バッテリを覆うカバー部と、該カバー部から径方向外側に延設され前記トレイ側周縁部と重なり合うカバー側周縁部とから構成されたカバー部材と、
前記トレイ側周縁部に接触して配置され、一端が前記トレイ側周縁部から径方向外側へ所定距離延びて設けられる金属製の第１狭持部材と、
前記カバー側周縁部に接触して配置され、一端が前記カバー側周縁部から径方向外側へ所定距離延びて設けられる金属製の第２狭持部材と、
を備えたことを特徴とする車両用バッテリケース。 In a vehicle battery case for storing a battery for driving the vehicle,
A tray member made of a resin and having a holding part for holding the battery, and a tray side peripheral edge extending radially outward from the holding part;
A cover member that is made of resin and covers the battery; and a cover member that extends radially outward from the cover portion and overlaps the tray-side periphery,
A first holding member made of metal that is disposed in contact with the peripheral edge of the tray, and has one end extending a predetermined distance radially outward from the peripheral edge of the tray;
A second holding member made of metal that is disposed in contact with the peripheral edge of the cover and has one end extending a predetermined distance radially outward from the peripheral edge of the cover;
A vehicle battery case comprising: 前記第１及び第２狭持部材の少なくともいずれか一方には、対応する前記トレイ側周縁部または前記カバー側周縁部との接触位置から離反する方向に屈曲する屈曲部が形成されていることを特徴とする、請求項１に記載の車両用バッテリケース。   At least one of the first and second holding members is formed with a bent portion that bends in a direction away from a contact position with the corresponding tray-side peripheral portion or the cover-side peripheral portion. The vehicle battery case according to claim 1, wherein the vehicle battery case is characterized. 前記トレイ側周縁部及び前記カバー側周縁部の少なくともいずれか一方に配設された１つ以上の凸部をさらに備え、
該凸部は前記屈曲部により覆われることを特徴とする、請求項１または２に記載の車両用バッテリケース。 One or more protrusions disposed on at least one of the tray side peripheral edge and the cover side peripheral edge;
The battery case for vehicles according to claim 1, wherein the convex portion is covered with the bent portion. 前記トレイ側周縁部に、周方向に沿って所定の間隔で形成されるとともに前記トレイ側周縁部と前記保持部とを接合するリブをさらに備えることを特徴とする、請求項１乃至３のいずれかに記載の車両用バッテリケース。   The said tray side peripheral part is further provided with the rib which joins the said tray side peripheral part and the said holding | maintenance part while being formed at predetermined intervals along the circumferential direction. A battery case for a vehicle according to claim 1. 前記トレイ側周縁部と前記カバー側周縁部とが重なり合う重合部を密閉するシール部材をさらに備え、
該シール部材は前記第１及び第２狭持部材により狭持される前記トレイ側周縁部と前記カバー側周縁部との接触位置に対応して設けられることを特徴とする、請求項１乃至４のいずれかに記載の車両用バッテリケース。 A seal member for sealing the overlapping portion where the tray side periphery and the cover side periphery overlap;
5. The seal member according to claim 1, wherein the seal member is provided corresponding to a contact position between the tray side periphery and the cover side periphery held by the first and second sandwiching members. The battery case for vehicles in any one of.
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WO2016194684A1 (en) * 2015-06-04 2016-12-08 本田技研工業株式会社 Battery unit for vehicle
US10549619B2 (en) 2015-06-04 2020-02-04 Honda Motor Co., Ltd. Vehicle battery unit
JP2018067443A (en) * 2016-10-19 2018-04-26 株式会社豊田自動織機 Battery pack

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