JP4845571B2 - Vehicle power supply - Google Patents

Vehicle power supply Download PDF

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JP4845571B2
JP4845571B2 JP2006104152A JP2006104152A JP4845571B2 JP 4845571 B2 JP4845571 B2 JP 4845571B2 JP 2006104152 A JP2006104152 A JP 2006104152A JP 2006104152 A JP2006104152 A JP 2006104152A JP 4845571 B2 JP4845571 B2 JP 4845571B2
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battery
end side
refrigerant
cooling air
battery modules
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JP2007276583A (en
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真也 久保田
秀明 酒井
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Honda Motor Co Ltd
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Honda Motor Co Ltd
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Priority to JP2006104152A priority Critical patent/JP4845571B2/en
Priority to CN200710088484A priority patent/CN100579810C/en
Priority to US11/730,738 priority patent/US20070238015A1/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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  • Secondary Cells (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Body Structure For Vehicles (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)

Description

本発明は、複数本の円筒状のバッテリモジュールを並置方向に沿って平面状に並置したものを積層方向に沿って複数層に積層してバッテリボックスの内部に収納し、前記バッテリボックスの前記並置方向一端側に設けた冷媒供給口から前記並置方向他端側に設けた冷媒排出口へと冷媒を流して前記バッテリモジュールを冷却する車両用電源装置に関する。 The present invention provides a plurality of cylindrical battery modules juxtaposed in a plane along the juxtaposition direction, stacked in a plurality of layers along the laminating direction and housed in a battery box , and the juxtaposition of the battery boxes from the refrigerant supply port formed in a direction one end side to the coolant discharge port provided in the juxtaposed direction end side and a vehicle power supply device that cools the battery module by flowing refrigerant.

複数本の円筒状のバッテリモジュールを平面状に並置したものを複数層に積層してバッテリボックスの内部に収納し、これをリヤシートの後面に支持してハイブリッド車両の電源を構成したものが、下記特許文献１により公知である。バッテリボックスの上下部には冷却空気供給口および冷却空気排出口がそれぞれ設けられており、冷却空気供給口から供給された冷却空気はバッテリボックスの内部を流れる間にバッテリモジュールを冷却した後、冷却空気排出口から排出されるようになっている。
特開２００３−１５２３７８号公報 A plurality of cylindrical battery modules juxtaposed in a plane are stacked in a plurality of layers and stored in a battery box, and this is supported on the rear surface of the rear seat to constitute a power source for the hybrid vehicle. This is known from US Pat. A cooling air supply port and a cooling air discharge port are provided at the upper and lower portions of the battery box, respectively, and the cooling air supplied from the cooling air supply port cools the battery module while flowing through the inside of the battery box. The air is discharged from the air outlet.
JP 2003-152378 A

ところで、複数本のバッテリモジュールは電気的に直列に接続されているため、そのうちの何れかの冷却が不充分で温度が上昇すると、そのバッテリモジュールの寿命が短くなるだけでなく、複数本のバッテリモジュール全体の性能が低下してしまう問題がある。特に、各層を構成するバッテリモジュールの本数が異なる場合には、バッテリモジュールの本数が多い層の冷却空気の流れ方向下流側に位置するバッテリモジュールの冷却が不充分になり易く、そのバッテリモジュールの温度が過度に上昇してしまう問題がある。   By the way, since a plurality of battery modules are electrically connected in series, if any one of them is insufficiently cooled and the temperature rises, not only the life of the battery module is shortened but also the plurality of batteries There is a problem that the performance of the entire module deteriorates. In particular, when the number of battery modules constituting each layer is different, the battery module located on the downstream side in the flow direction of the cooling air of the layer having a large number of battery modules is likely to be insufficiently cooled, and the temperature of the battery module There is a problem that will rise excessively.

本発明は前述の事情に鑑みてなされたもので、バッテリボックスの内部で複数層に積層されたバッテリモジュールを均等に冷却することを目的とする。   The present invention has been made in view of the above circumstances, and an object thereof is to uniformly cool battery modules stacked in a plurality of layers inside a battery box.

上記目的を達成するために、請求項１に記載された発明によれば、複数本の円筒状のバッテリモジュールを並置方向に沿って平面状に並置したものを積層方向に沿って複数層に積層してバッテリボックスの内部に収納し、前記バッテリボックスの前記並置方向一端側に設けた冷媒供給口から前記並置方向他端側に設けた冷媒排出口へと冷媒を流して前記バッテリモジュールを冷却する車両用電源装置であって、前記積層方向一端側の層のバッテリモジュールの本数よりも前記積層方向他端側の層のバッテリモジュールの本数が多く設定されたものにおいて、前記冷媒供給口は、前記各層の前記並置方向一端側の前記バッテリモジュールに対向する前記バッテリボックスの第１壁部に前記積層方向の全域に亘って開口し、前記各層の前記並置方向他端側のバッテリモジュールと、それらに対向する前記バッテリボックスの第２壁部との間に冷媒を案内する冷媒ガイドが配置され、前記冷媒排出口は、前記冷媒ガイドの前記積層方向他端側に偏った端部に開口することを特徴とする車両用電源装置が提案される。
To achieve the above object, according to the first aspect of the present invention, a plurality of cylindrical battery modules juxtaposed in a plane along the juxtaposition direction are laminated in a plurality of layers along the laminating direction. Then, the battery module is stored in the battery box, and the battery module is cooled by flowing a refrigerant from a refrigerant supply port provided on one end side in the juxtaposition direction of the battery box to a refrigerant discharge port provided on the other end side in the juxtaposition direction. In the vehicle power supply apparatus, in which the number of battery modules in the layer on the other end side in the stacking direction is set larger than the number of battery modules in the layer on the one end side in the stacking direction, over the entire region of the stacking direction to the first wall portion of the battery box facing the battery module of the juxtaposed direction one end side of each layer is open, the juxtaposed sides of the layers And the other end side of the battery module, is arranged refrigerant guide for guiding the refrigerant between the second wall portion of the battery box opposite to them, the coolant outlet port, said stacking direction end of the refrigerant guide A vehicular power supply device is proposed which opens to an end portion biased to the side .

また請求項２に記載された発明によれば、請求項１の構成に加えて、前記バッテリボックスの前記積層方向一端側の壁面は、冷媒の流れ方向下流側が前記積層方向他端側に接近するように傾斜することを特徴とする車両用電源装置が提案される。   According to the invention described in claim 2, in addition to the configuration of claim 1, the wall surface on one end side in the stacking direction of the battery box is closer to the other end side in the stacking direction on the downstream side in the refrigerant flow direction. In this way, a vehicle power supply device is proposed that is inclined in this manner.

また請求項３に記載された発明によれば、請求項１または請求項２の構成に加えて、トランクルームのフロアパネルに凹部を形成し、前記積層方向一端側を下向きにした前記バッテリボックスを前記凹部に収納したことを特徴とする車両用電源装置が提案される。   According to the invention described in claim 3, in addition to the configuration of claim 1 or claim 2, the battery box in which a recess is formed in the floor panel of the trunk room and one end side in the stacking direction faces downward is provided. A vehicle power supply device characterized in that it is housed in a recess is proposed.

尚、実施の形態の底壁４１ａは本発明の壁面に対応し、実施の形態の冷却空気供給口４９は本発明の冷媒供給口に対応し、実施の形態の第２導風ガイド５１は本発明の冷媒ガイドに対応し、実施の形態の冷却空気排出口５２は本発明の冷媒排出口に対応する。 The bottom wall 41a of the embodiment corresponds to the wall surface of the present invention, the cooling air supply port 49 of the embodiment corresponds to the refrigerant supply port of the present invention, and the second air guide 51 of the embodiment is the main wall. Corresponding to the refrigerant guide of the invention, the cooling air discharge port 52 of the embodiment corresponds to the refrigerant discharge port of the present invention.

請求項１の構成によれば、複数本の円筒状のバッテリモジュールを並置方向に沿って平面状に並置し、それを積層方向に沿って複数層に積層したもの収納するバッテリボックスに冷媒供給口および冷媒排出口を設け、並置方向一端側に設けた冷媒供給口から並置方向他端側に設けた冷媒排出口へと冷媒を流してバッテリモジュールを冷却する場合に、バッテリモジュールの積層方向一端側の層のバッテリモジュールの本数よりも積層方向他端側の層のバッテリモジュールの本数が多く設定されていると、前記積層方向他端側の層のバッテリモジュールのうち、冷媒排出口に近いバッテリモジュールに冷媒が当たり難くなって冷却効果が低下する。そこで冷媒供給口を、各層の並置方向一端側のバッテリモジュールに対向するバッテリボックスの第１壁部に積層方向の全域に亘って開口させ、各層の並置方向他端側のバッテリモジュールと、それらに対向するバッテリボックスの第２壁部との間に冷媒を案内する冷媒ガイドを配置し、冷媒排出口を、冷媒ガイドの前記積層方向他端側に偏った端部に開口させることで、冷媒の流れ方向下流側に冷媒ガイドに沿って積層方向一端側から他端側に向かう流れを形成し、その流れで前記冷却され難いバッテリモジュールを効率的に冷却して全てのバッテリモジュールを均一に冷却することができる。 According to the configuration of the first aspect, the refrigerant supply port is provided in the battery box that houses a plurality of cylindrical battery modules juxtaposed in a plane along the juxtaposition direction and stacked in a plurality of layers along the laminating direction. And when the battery module is cooled by flowing the refrigerant from the refrigerant supply port provided on one end side of the juxtaposed direction to the refrigerant discharge port provided on the other end side of the juxtaposed direction. If the number of battery modules on the other side in the stacking direction is set to be larger than the number of battery modules on the other layer, the battery module close to the refrigerant outlet among the battery modules on the other side in the stacking direction As a result, it becomes difficult for the refrigerant to hit the battery, and the cooling effect is reduced. The Therefore coolant supply port, over the entire region of the first wall portion in the stacking direction of the battery box opposite the respective layers juxtaposed direction end side battery module is opened, and each layer of juxtaposed direction end side battery module, By disposing a refrigerant guide that guides the refrigerant between the second wall portion of the battery box facing them, and opening the refrigerant discharge port at the end of the refrigerant guide that is biased toward the other end side in the stacking direction , A flow from the one end side to the other end side in the stacking direction is formed along the refrigerant guide on the downstream side in the flow direction of the refrigerant, and the battery modules that are difficult to cool are efficiently cooled by the flow to uniformly distribute all the battery modules. Can be cooled.

また請求項２の構成によれば、バッテリボックスの積層方向一端側の壁面を、冷媒の流れ方向下流側が積層方向他端側に接近するように傾斜させたので、冷媒の流れ方向が積極的に冷媒排出口を指向するようにして全てのバッテリモジュールをより均一に冷却することができる。   According to the second aspect of the present invention, the wall surface on one end side in the stacking direction of the battery box is inclined so that the downstream side in the refrigerant flow direction approaches the other end side in the stacking direction. All the battery modules can be cooled more uniformly by directing the refrigerant outlet.

また請求項３の構成によれば、バッテリモジュールの本数が少ない積層方向一端側を下向きにしたバッテリボックスをトランクルームのフロアパネルに形成した凹部に収納するので、通常はスペアタイヤの収納スペースとして利用される空間にバッテリボックスをコンパクトにレイアウトすることができる。   According to the configuration of the third aspect, since the battery box with one end side in the stacking direction with a small number of battery modules facing downward is stored in the recess formed in the floor panel of the trunk room, it is normally used as a storage space for spare tires. The battery box can be laid out in a compact space.

以下、本発明の実施の形態を添付の図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図１〜図６は本発明の第１の実施の形態を示すもので、図１は車両用電源装置の全体斜視図、図２は図１の２−２線断面図、図３は図２の３−３線断面図、図４は図３の４−４線断面図、図５は図３の５−５線断面図、図６は車両用電源装置の分解斜視図である。   1 to 6 show a first embodiment of the present invention. FIG. 1 is an overall perspective view of a vehicle power supply device, FIG. 2 is a sectional view taken along line 2-2 of FIG. 1, and FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, FIG. 5 is a sectional view taken along line 5-5 of FIG. 3, and FIG. 6 is an exploded perspective view of the power supply device for a vehicle.

図１に示すように、エンジンおよびモータ・ジェネレータを走行用駆動源とするハイブリッド車両のリヤシート１１のシートクッション１２の後端から斜め後方に起立するシートバック１３の後面に、前記モータ・ジェネレータに接続された電源装置１４が配置される。電源装置１４は、バッテリを収納するバッテリボックス１５と、インバータのような電装品１６を収納する電装品ボックス１７と、バッテリボックス１５に冷媒としての冷却空気を導入する冷却空気供給ダクト１８と、バッテリボックス１５から電装品ボックス１７に冷却空気を案内する中間ダクト１９と、電装品ボックス１７から冷却空気を排出する冷却空気排出ダクト２０と、冷却空気排出ダクト２０の下流端に設けられた電動ファン２１とを備える。   As shown in FIG. 1, the motor / generator is connected to a rear surface of a seat back 13 that stands obliquely rearward from a rear end of a seat cushion 12 of a rear seat 11 of a hybrid vehicle using an engine and a motor / generator as a driving source. The power supply device 14 is arranged. The power supply device 14 includes a battery box 15 that houses a battery, an electrical component box 17 that houses an electrical component 16 such as an inverter, a cooling air supply duct 18 that introduces cooling air as a refrigerant into the battery box 15, and a battery. An intermediate duct 19 that guides cooling air from the box 15 to the electrical component box 17, a cooling air discharge duct 20 that exhausts the cooling air from the electrical component box 17, and an electric fan 21 provided at the downstream end of the cooling air discharge duct 20. With.

次に、図２〜図６に基づいてバッテリボックス１５の構造を説明する。   Next, the structure of the battery box 15 will be described with reference to FIGS.

バッテリボックス１５は、コ字状に形成された一対のバッテリ支持フレーム３１，３１と、井桁状に形成されたバッテリ支持枠３２とを備えており、バッテリ支持フレーム３１，３１の両端を外側に折り返して形成した固定部３１ａ…が、バッテリ支持枠３２に形成したボルト孔３２ａ…を貫通する４本のボルト３３…で一体に結合される。   The battery box 15 includes a pair of battery support frames 31, 31 formed in a U-shape and a battery support frame 32 formed in a cross beam shape, and both ends of the battery support frames 31, 31 are folded outward. The fixed portions 31a formed in this manner are integrally coupled with four bolts 33 passing through the bolt holes 32a formed in the battery support frame 32.

バッテリボックス１５に収納されるバッテリは、複数個のバッテリセル３４…を直列に接続して円筒状のバッテリモジュール３５を構成し、そのバッテリモジュール３５の６本ないし８本を並置方向に沿って平面状に並置したものを積層方向に沿って４層に積層して構成される。「並置方向」および「積層方向」の定義は図２に示される。５枚に分割された板状のバッテリホルダ３６〜４０がバッテリ支持フレーム３１，３１に固定されており、これらのバッテリホルダ３６〜４０に形成された円形の開口に各バッテリモジュール３５…の一端部および他端部近傍が挟まれるように支持される。 The battery housed in the battery box 15 forms a cylindrical battery module 35 by connecting a plurality of battery cells 34 in series, and six to eight of the battery modules 35 are planar along the juxtaposition direction. Are arranged in four layers along the stacking direction . The definitions of “parallel direction” and “stacking direction” are shown in FIG. The plate-shaped battery holders 36 to 40 divided into five are fixed to the battery support frames 31 and 31, and one end portion of each battery module 35... Is formed in a circular opening formed in the battery holders 36 to 40. And it is supported so that the other end part vicinity may be pinched | interposed.

このようにして一体化された合計２８本のバッテリモジュール３５…の周囲が、発泡スチロールで容器状に形成したバッテリケース４１と、発泡スチロールで板状に形成した蓋体４２とで覆われる。一方のバッテリ支持フレーム３１およびバッテリ支持枠３２に４本のボルト４３…でジャンクションボード４４が固定されており、このジャンクションボード４４で各バッテリモジュール３５…の一端に設けた端子どうしが接続される。そしてバッテリ支持枠３２が８本のボルト４５…でシートクッション１２のシートフレーム４６，４６に固定され、バッテリケース４１の周囲が金属板をプレス成形したバッテリカバー４７で覆われる。   A total of 28 battery modules 35... Integrated in this way are covered with a battery case 41 formed in a container shape with polystyrene foam and a lid body 42 formed in a plate shape with polystyrene foam. A junction board 44 is fixed to one battery support frame 31 and the battery support frame 32 by four bolts 43... And terminals provided at one ends of the battery modules 35 are connected to each other by the junction board 44. The battery support frame 32 is fixed to the seat frames 46, 46 of the seat cushion 12 with eight bolts 45, and the periphery of the battery case 41 is covered with a battery cover 47 formed by press-molding a metal plate.

合計２８本のバッテリモジュール３５…は、４層に分かれて積層される。バッテリケース４１の積層方向一端側の底壁４１ａ側から積層方向他端側の蓋体４２側に向けて第１層、第２層、第３層、第４層とすると、第１層は６本のバッテリモジュール３５…で構成され、第２層および第３層はそれぞれ７本のバッテリモジュール３５…で構成され、第４層は８本のバッテリモジュール３５…で構成され、各層のバッテリモジュール３５…は冷却空気が通過し得る隙間を有して千鳥状に配置される（図２参照）。 A total of 28 battery modules 35 are laminated in four layers. When the first layer, the second layer, the third layer, and the fourth layer are formed from the bottom wall 41a side on one end side of the battery case 41 toward the lid 42 side on the other end side in the stacking direction , the first layer is 6 The second layer and the third layer are each composed of seven battery modules 35... And the fourth layer is composed of eight battery modules 35. Each of the battery modules 35 in each layer. Are arranged in a staggered manner with gaps through which cooling air can pass (see FIG. 2).

一対のバッテリ支持フレーム３１，３１に、４枚の断面円弧状の第１導風ガイド４８…が固定される。これらの第１導風ガイド４８…は、各層のバッテリモジュール３５…のうち、冷却空気の流れ方向上流端の４本のバッテリモジュール３５…の上面を覆うように配置されており、隣接する第１導風ガイド４８…間に冷却空気が通過し得るスリットαが形成される。第１導風ガイド４８…の上面に対向するようにバッテリケース４１の並置方向一端側の第１壁部４１ｂ（図２、図３および図６参照）に冷却空気供給口４９が開口しており、この冷却空気供給口４９に冷却空気供給ダクト１８の下流端が接続される。 Four first air guides 48 having a circular arc cross section are fixed to the pair of battery support frames 31, 31. These first air guides 48 are arranged so as to cover the upper surfaces of the four battery modules 35 at the upstream end in the flow direction of the cooling air among the battery modules 35 of each layer. A slit α through which cooling air can pass is formed between the air guides 48. A cooling air supply port 49 is opened in the first wall portion 41b (see FIGS. 2, 3 and 6) on one end side of the battery case 41 so as to face the upper surface of the first air guides 48. The downstream end of the cooling air supply duct 18 is connected to the cooling air supply port 49.

冷却空気供給ダクト１８の下流端の近傍には、バッテリモジュール３５…の一端側（ジャンクションボード４４側）から他端側に張り出す邪魔板５０（図３参照）が固定される。また一対のバッテリ支持フレーム３１，３１に、バッテリモジュール３５…の他端側とバッテリカバー４７の第２壁部４７ａとの間に位置する１枚の第２導風ガイド５１が固定される。第２導風ガイド５１は、各層のバッテリモジュール３５…のうち、第１層〜第３層における冷却空気の流れ方向下流端の３本のバッテリモジュール３５…の下面を覆うように配置される。第４層における冷却空気の流れ方向下流端のバッテリモジュール３５に対向する位置で第２導風ガイド５１が途切れており、その部分に並置方向他端側に位置する冷却空気排出口５２が形成される。更に、第１層の６本のバッテリモジュール３５…に対向するバッテリケース４１の底壁４１ａ（図２参照）は、冷却空気の流れ方向上流側から下流側に向かってバッテリモジュール３５…に近づく方向に傾斜している。 In the vicinity of the downstream end of the cooling air supply duct 18, a baffle plate 50 (see FIG. 3) that projects from one end side (junction board 44 side) of the battery modules 35 to the other end side is fixed. In addition, one second air guide 51 located between the other end side of the battery modules 35 and the second wall 47a of the battery cover 47 is fixed to the pair of battery support frames 31 and 31. The second air guide 51 is disposed so as to cover the lower surfaces of the three battery modules 35 at the downstream end of the first to third layers in the flow direction of the cooling air among the battery modules 35 of each layer. The second air guide 51 is interrupted at the position facing the battery module 35 at the downstream end in the cooling air flow direction in the fourth layer, and the cooling air discharge port 52 located at the other end side in the juxtaposition direction is formed in that portion. The Further, the bottom wall 41a (see FIG. 2) of the battery case 41 facing the six battery modules 35 in the first layer is closer to the battery modules 35 from the upstream side to the downstream side in the cooling air flow direction. It is inclined to.

次に、上記構成を備えた第１の実施の形態の作用を説明する。   Next, the operation of the first embodiment having the above configuration will be described.

車両の運転に伴ってモータ・ジェネレータをモータとして機能させたりジェネレータとして機能させたりすると、バッテリモジュール３５…が充放電されて発熱するため、それらを冷却空気で冷却する必要がある。即ち、電動ファン２１を駆動すると、車室内の冷却空気が吸引されて冷却空気供給ダクト１８、バッテリボックス１５、中間ダクト１９、電装品ボックス１７および冷却空気排出ダクト２０を経て電動ファン２１へと流れ、その際にバッテリボックス１５内のバッテリモジュール３５…と電装品ボックス１７内の電装品１６とが冷却空気で冷却される。   When the motor / generator functions as a motor or functions as a generator as the vehicle is operated, the battery modules 35 are charged and discharged to generate heat. Therefore, it is necessary to cool them with cooling air. That is, when the electric fan 21 is driven, the cooling air in the passenger compartment is sucked and flows to the electric fan 21 via the cooling air supply duct 18, the battery box 15, the intermediate duct 19, the electrical component box 17, and the cooling air discharge duct 20. At that time, the battery modules 35 in the battery box 15 and the electrical component 16 in the electrical component box 17 are cooled by cooling air.

冷却空気供給ダクト１８から冷却空気供給口４９を経てバッテリボックス１５の内部に冷却空気が流入するとき、第１層〜第４層のバッテリモジュール３５…のうち、冷却空気の流れ方向上流端に位置する４個のバッテリモジュール３５…は、低温の冷却空気が強く当たるために過冷却になる虞があるが、その冷却空気を４枚の第１導風ガイド４８…で遮ることにより、前記４個のバッテリモジュール３５…の過冷却を防止することができる。４枚の第１導風ガイド４８…間に形成された隙間αを通過した冷却空気はバッテリボックス１５の内部を冷却空気排出口５２に向かって流れ、その間に全てのバッテリモジュール３５…に接触して冷却効果を発揮する。   When cooling air flows from the cooling air supply duct 18 into the battery box 15 through the cooling air supply port 49, the battery module 35 of the first to fourth layers is positioned at the upstream end in the flow direction of the cooling air. The four battery modules 35... May be supercooled due to strong contact with the low-temperature cooling air. However, the four air-conditioning guides 48. Overcooling of the battery modules 35 can be prevented. The cooling air that has passed through the gap α formed between the four first air guides 48... Flows through the inside of the battery box 15 toward the cooling air discharge port 52 and contacts all the battery modules 35. Show cooling effect.

ところで、冷却空気の流れ方向に沿うバッテリモジュール３５…の数は、第１層が６本、第２層および第３層がそれぞれ７本、第４層が８本と異なっているため、最も本数が多い第４層のバッテリモジュール３５…のうち、冷却空気の流れ方向下流側のものの冷却効果が低下する問題がある。第２層および第３層のバッテリモジュール３５…にも、第４層ほどではないが同様の問題が発生する。図２には、最も冷却が困難なバッテリモジュール３５…が網かけして示されており、次いで冷却が困難なバッテリモジュール３５…が斜線を施して示される。   By the way, the number of the battery modules 35... Along the cooling air flow direction is the most because the number of the first layer is six, the number of the second and third layers is seven, and the number of the fourth layer is eight. There is a problem that the cooling effect of the fourth-layer battery modules 35... Similar problems occur in the second and third layer battery modules 35, though not as much as in the fourth layer. In FIG. 2, the battery modules 35 that are most difficult to cool are shaded, and then the battery modules 35 that are difficult to cool are shaded.

しかしながら本実施の形態では、バッテリボックス１５の冷却空気の流れ方向下流側に形成した第２導風ガイド５１で上記問題を解決することができる。即ち、第２導風ガイド５１を設けたことで冷却空気排出口５２が第４層側に偏倚するため、第１層に沿って流れた冷却空気が第２導風ガイド５１に案内されて第４層寄りに設けられた冷却空気排出口５２に向けて斜めに流れることになる。その結果、網かけして示すバッテリモジュール３５…や斜線を施して示すバッテリモジュール３５…により大量の冷却空気を接触させることができ、全てのバッテリモジュール３５…を均等に冷却して電源装置１４の性能や耐久性を向上させることができる。   However, in the present embodiment, the above problem can be solved by the second air guide 51 formed on the downstream side of the battery box 15 in the flow direction of the cooling air. In other words, since the cooling air discharge port 52 is biased toward the fourth layer side by providing the second air guide 51, the cooling air flowing along the first layer is guided to the second air guide 51 to be The air flows obliquely toward the cooling air discharge port 52 provided closer to the fourth layer. As a result, a large amount of cooling air can be brought into contact with the battery modules 35 shown by shading and the battery modules 35 shown by hatching, and all the battery modules 35 are evenly cooled to Performance and durability can be improved.

またバッテリケース４１の底壁４１ａが冷却空気の流れ方向下流側ほど第４層に接近するように傾斜しているため、冷却空気が冷却空気排出口５２に向けて斜めに流れ易くなり、第２導風ガイド５１の効果を更に高めることができる。   Further, since the bottom wall 41a of the battery case 41 is inclined so as to approach the fourth layer toward the downstream side in the flow direction of the cooling air, the cooling air easily flows obliquely toward the cooling air discharge port 52. The effect of the air guide 51 can be further enhanced.

図３において、冷却空気供給ダクト１８から供給された冷却空気はバッテリボックス１５の内部を上から下に流れた後、左向きに９０°向きを変えて中間ダクト１９を右から左に流れるため、流れの偏向方向外側の隅に位置するバッテリモジュール３５…（鎖線の円で囲んだ部分）に冷却空気が当たり難くなって冷却効果が不均一になる問題がある。   In FIG. 3, the cooling air supplied from the cooling air supply duct 18 flows from the top to the bottom in the battery box 15, and then turns 90 ° leftward and flows through the intermediate duct 19 from right to left. There is a problem that the cooling air is difficult to hit the battery modules 35 (parts surrounded by a chain line circle) located at the outer corner in the deflection direction and the cooling effect becomes non-uniform.

冷却空気供給ダクト１８に設けられた邪魔板５０は上記問題が解決するためのものであり、この邪魔板５０によりバッテリボックス１５に流入する冷却空気を中間ダクト１９と反対側（図３における右側）に偏向させることで、前記鎖線の円で囲んだ部分に充分な量の冷却空気を供給して冷却効果を高めることができる。しかも、図３における右側のバッテリホルダ３６〜４０が隔壁として作用し、そのバッテリホルダ３６〜４０の右側に流入した冷却空気は中間ダクト１９側に引っ張られることなく真下に流れるため、前記鎖線の円で囲んだ部分のバッテリモジュール３５…を更に効果的に冷却することができる。   The baffle plate 50 provided in the cooling air supply duct 18 is for solving the above problem, and the cooling air flowing into the battery box 15 by the baffle plate 50 is opposite to the intermediate duct 19 (right side in FIG. 3). By deflecting to a sufficient amount, a sufficient amount of cooling air can be supplied to the portion surrounded by the chain line circle to enhance the cooling effect. In addition, the right battery holders 36 to 40 in FIG. 3 act as partition walls, and the cooling air that has flowed into the right side of the battery holders 36 to 40 flows directly below without being pulled to the intermediate duct 19 side. The battery modules 35... Enclosed by the can be further effectively cooled.

図７および図８は本発明の第２の実施の形態を示すもので、図７は車両用電源装置の全体斜視図、図８は図７の８−８線断面図である。この第２の実施の形態において、上述した第１の実施の形態の構成要素に対応する構成要素に第１の実施の形態と同じ符号を付すことで、重複する説明を省略する。   7 and 8 show a second embodiment of the present invention. FIG. 7 is an overall perspective view of the vehicle power supply device, and FIG. 8 is a cross-sectional view taken along line 8-8 of FIG. In this 2nd Embodiment, the description which overlaps by omitting the same code | symbol as 1st Embodiment to the component corresponding to the component of 1st Embodiment mentioned above is abbreviate | omitted.

第２の実施の形態の電源装置１４は、自動車のトランクルーム６１のフロアパネル６２に形成した凹部６２ａに収納される。前記凹部６２ａは一般的にスペアタイヤの収納に利用される場所であり、この場所を電源装置１４の収納に利用することで空間の有効利用が可能になる。   The power supply device 14 according to the second embodiment is accommodated in a recess 62a formed in a floor panel 62 of a trunk room 61 of an automobile. The recess 62a is a place that is generally used for storing a spare tire. By using this place for storing the power supply device 14, the space can be effectively used.

バッテリモジュール３５…は上下方向に３層に配置されており、下側の第１層は９本のバッテリモジュール３５…を備え、中央の第２層は１０本のバッテリモジュール３５…を備え、上側の第３層は１１本のバッテリモジュール３５…を備える。   The battery modules 35 are arranged in three layers in the vertical direction. The lower first layer includes nine battery modules 35. The central second layer includes ten battery modules 35. The third layer includes eleven battery modules 35.

冷却空気供給ダクト１８はバッテリボックス１５のバッテリケース４１の第１壁部４１ｂに形成した冷却空気供給口４９と、３枚の第１導風ガイド４８…とを経て第１層〜第３層に均等に供給されるが、冷却空気の流れ方向下流側に斜め上方に向いて傾斜した第２導風ガイド５１を設け、かつバッテリケース４１の底壁４１ａを冷却空気の流れ方向下流側が高くなるように傾斜させることで、第３層の近傍に開口する冷却空気排出口５２に向けて冷却空気を斜め上方に案内するようになっている。 The cooling air supply duct 18 passes through the cooling air supply port 49 formed in the first wall portion 41b of the battery case 41 of the battery box 15 and the three first air guides 48 to the first to third layers. A second air guide 51 is provided that is evenly supplied but is inclined obliquely upward toward the downstream side in the cooling air flow direction, and the bottom wall 41a of the battery case 41 is arranged so that the downstream side in the cooling air flow direction becomes higher. The cooling air is guided obliquely upward toward the cooling air discharge port 52 opened near the third layer.

これにより、本数が多いために冷却され難い第３層あるいは第２層のバッテリモジュール３５…のうちの冷却空気の流れ方向下流側に位置するものに冷却風を効率的に作用させ、全てのバッテリモジュール３５…を均等に冷却して電源装置１４の性能や耐久性を向上させることができる。   Thus, the cooling air efficiently acts on the third or second layer battery module 35... Which is difficult to be cooled due to the large number of the battery modules, which is located downstream in the cooling air flow direction. The modules 35... Can be evenly cooled to improve the performance and durability of the power supply device 14.

以上、本発明の実施の形態を詳述したが、本発明はその要旨を逸脱しない範囲で種々の設計変更を行うことが可能である。   As mentioned above, although embodiment of this invention was explained in full detail, this invention can perform a various design change in the range which does not deviate from the summary.

例えば、バッテリモジュール３５…を積層する層数は実施の形態の４層に限定されず、複数層であれば良い。   For example, the number of layers in which the battery modules 35 are stacked is not limited to the four layers in the embodiment, and may be a plurality of layers.

また各層のバッテリモジュール３５…の本数も実施の形態に限定されず、積層方向一端側と他端側とで異なっていれば良い。   Further, the number of the battery modules 35 in each layer is not limited to that in the embodiment, and may be different between the one end side and the other end side in the stacking direction.

第１の実施の形態に係る車両用電源装置の全体斜視図1 is an overall perspective view of a vehicle power supply device according to a first embodiment. 図１の２−２線断面図2-2 sectional view of FIG. 図２の３−３線断面図3-3 sectional view of FIG. 図３の４−４線断面図Sectional view taken along line 4-4 in FIG. 図３の５−５線断面図Sectional view along line 5-5 in FIG. 車両用電源装置の分解斜視図Exploded perspective view of power supply device for vehicle 第２の実施の形態に係る車両用電源装置の全体斜視図Overall perspective view of a vehicle power supply device according to a second embodiment 図７の８−８線断面図Sectional view taken along line 8-8 in FIG.

１５ バッテリボックス
３５ バッテリモジュール
４１ａ 底壁（壁面）
４１ｂ 第１壁部
４７ａ 第２壁部
４９ 冷却空気供給口（冷媒供給口）
５１ 第２導風ガイド（冷媒ガイド）
５２ 冷却空気排出口（冷媒排出口）
６１ トランクルーム
６２ フロアパネル
６２ａ 凹部 15 Battery box 35 Battery module 41a Bottom wall (wall surface)
41b first wall
47a 2nd wall part 49 Cooling air supply port (refrigerant supply port)
51 Second wind guide (refrigerant guide)
52 Cooling air outlet (refrigerant outlet)
61 Trunk room 62 Floor panel 62a Recess

Claims (3)

複数本の円筒状のバッテリモジュール（３５）を並置方向に沿って平面状に並置したものを積層方向に沿って複数層に積層してバッテリボックス（１５）の内部に収納し、前記バッテリボックス（１５）の前記並置方向一端側に設けた冷媒供給口（４９）から前記並置方向他端側に設けた冷媒排出口（５２）へと冷媒を流して前記バッテリモジュール（３５）を冷却する車両用電源装置であって、前記積層方向一端側の層のバッテリモジュール（３５）の本数よりも前記積層方向他端側の層のバッテリモジュール（３５）の本数が多く設定されたものにおいて、
前記冷媒供給口（４９）は、前記各層の前記並置方向一端側の前記バッテリモジュール（３５）に対向する前記バッテリボックス（１５）の第１壁部（４１ｂ）に前記積層方向の全域に亘って開口し、
前記各層の前記並置方向他端側のバッテリモジュール（３５）と、それらに対向する前記バッテリボックス（１５）の第２壁部（４７ａ）との間に冷媒を案内する冷媒ガイド（５１）が配置され、前記冷媒排出口（５２）は、前記冷媒ガイド（３１）の前記積層方向他端側に偏った端部に開口することを特徴とする車両用電源装置。
A plurality of cylindrical battery modules (35) juxtaposed in a plane along the juxtaposition direction are stacked in a plurality of layers along the laminating direction and stored in the battery box (15), and the battery box ( 15) for a vehicle that cools the battery module (35) by flowing a refrigerant from a refrigerant supply port (49) provided on one end side in the juxtaposed direction to a refrigerant discharge port (52) provided on the other end side in the juxtaposed direction. In the power supply device, in which the number of battery modules (35) on the other end side in the stacking direction is set larger than the number of battery modules (35) on the one end side in the stacking direction,
The coolant supply port (49), over the entire region of the stacking direction to the first wall portion (41b) of said battery box facing the battery module of the juxtaposed direction one end side of the respective layers (35) (15) Open
And said juxtaposed direction end side of the battery modules of each layer (35), the refrigerant guide for guiding the refrigerant between the second wall portion of the battery box opposite to those (15) and (47a) (51) is The vehicular power supply device, wherein the refrigerant discharge port (52) opens at an end portion of the refrigerant guide (31) that is biased toward the other end side in the stacking direction .
前記バッテリボックス（１５）の前記積層方向一端側の壁面（４１ａ）は、冷媒の流れ方向下流側が前記積層方向他端側に接近するように傾斜することを特徴とする、請求項１に記載の車両用電源装置。   The wall surface (41a) on one end side in the stacking direction of the battery box (15) is inclined so that the downstream side in the flow direction of the refrigerant approaches the other end side in the stacking direction. Vehicle power supply device. トランクルーム（６１）のフロアパネル（６２）に凹部（６２ａ）を形成し、前記積層方向一端側を下向きにした前記バッテリボックス（１５）を前記凹部（６２ａ）に収納したことを特徴とする、請求項１または請求項２に記載の車両用電源装置。   A recess (62a) is formed in a floor panel (62) of a trunk room (61), and the battery box (15) with one end in the stacking direction facing downward is housed in the recess (62a). The vehicle power supply device according to claim 1 or 2.
JP2006104152A 2006-04-05 2006-04-05 Vehicle power supply Expired - Fee Related JP4845571B2 (en)

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JP2006104152A JP4845571B2 (en) 2006-04-05 2006-04-05 Vehicle power supply
CN200710088484A CN100579810C (en) 2006-04-05 2007-03-27 Vehicular power source device
US11/730,738 US20070238015A1 (en) 2006-04-05 2007-04-03 Vehicular power source device

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