JP2015115285A - Power supply device - Google Patents

Power supply device Download PDF

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JP2015115285A
JP2015115285A JP2013258537A JP2013258537A JP2015115285A JP 2015115285 A JP2015115285 A JP 2015115285A JP 2013258537 A JP2013258537 A JP 2013258537A JP 2013258537 A JP2013258537 A JP 2013258537A JP 2015115285 A JP2015115285 A JP 2015115285A
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passage
battery pack
heat exchange
space
exchange medium
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滋 福田
Shigeru Fukuda
滋 福田
巧 五之治
Takumi Gonoji
巧 五之治
清成 小嶋
Kiyoshige Kojima
清成 小嶋
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Toyota Motor Corp
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Toyota Motor Corp
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a power supply device capable of reducing the number of components.SOLUTION: A power supply device (1) comprises: a battery pack (2); and frame members (3) each having a bottom face part (31) to which the battery pack is fixed, and a side wall part (32) for forming an air intake space (S1) and an air exhaustion space (S2) between respective lateral faces in a transverse direction of the battery pack, and stacked vertically in such a posture that top surfaces (221) of the battery packs are opposed to each other; and a sponge (4) sandwiched between the battery packs in the upper and lower frame members, and sectionalizing a distribution path of heat exchange medium in the upper and lower frame members. The bottom face part is formed in a hollow shape, and comprises: a first passage (311) in which the heat exchange medium passes; a second passage (312) in which the heat exchange medium after heat exchange with the battery pack passes; and a third passage (313) provided between the first passage and the second passage in the transverse direction, and forming an exhaustion path for gas generated in a power storage element (21).

Description

本発明は、電源装置に関する。   The present invention relates to a power supply device.

従来、電気自動車やハイブリッド自動車における電気モータの駆動源として、内部に電池パックを複数備える電源装置が用いられる。電池パックは、リチウムイオン電池やニッケル水素電池等の単電池を複数備える。電源装置には、電池パックへ冷却空気を送る吸気ダクトや、電池パック冷却後の冷却空気を排気する排気ダクト、単電池の内部で発生するガスを装置外へ排出するための排出ダクト、電源装置内を外気から断熱して外気低温時の電池パックの出力性能を確保するための断熱材、及び電源装置の隙間を閉塞して電源装置を密閉するスポンジを固定するための固定部材が設けられる。   2. Description of the Related Art Conventionally, a power supply device including a plurality of battery packs is used as a drive source for an electric motor in an electric vehicle or a hybrid vehicle. The battery pack includes a plurality of single cells such as lithium ion batteries and nickel metal hydride batteries. The power supply device includes an intake duct that sends cooling air to the battery pack, an exhaust duct that exhausts the cooling air after cooling the battery pack, a discharge duct that discharges gas generated inside the unit cell to the outside of the device, and a power supply device A heat insulating material for insulating the inside from the outside air to ensure the output performance of the battery pack at a low temperature of the outside air, and a fixing member for fixing a sponge for closing the power supply device and sealing the power supply device are provided.

特開２０００−０９２６２４号公報JP 2000-092624 A

従来の電源装置では、吸気ダクトや排気ダクト、排出ダクト、断熱材、スポンジの固定部材がそれぞれ個別に設けられており、部品点数が多いという問題がある。   The conventional power supply apparatus has a problem that the number of parts is large because the intake duct, the exhaust duct, the exhaust duct, the heat insulating material, and the sponge fixing member are individually provided.

本発明の電源装置は、複数の蓄電素子が積層された電池パックと、電池パックが固定される底面部と、蓄電素子の積層方向に延びて熱交換媒体が流通する吸気スペース及び排気スペースを積層方向視における電池パックの左右方向の各側面との間に形成する側壁部と、を有し、電池パックの上下方向の面のうち底面部から離隔する側の面である電池パックの天面同士が対向する姿勢で上下に積み上げられたフレーム部材と、上下に積み上げられたフレーム部材内の電池パックに挟まれ、上下のフレーム部材内の熱交換媒体の流通経路を区画するスポンジと、を備え、底面部は中空状に形成され、吸気スペースと連通し、電池パックへ導かれる熱交換媒体が通る第１通路と、排気スペースと連通し、電池パックとの熱交換後の熱交換媒体が通る第２通路と、左右方向において第１通路及び第２通路の間にあり、蓄電素子内部で発生したガスの排出経路を形成する第３通路と、を備えることを特徴とする。   The power supply device according to the present invention includes a battery pack in which a plurality of power storage elements are stacked, a bottom surface portion to which the battery pack is fixed, and an intake space and an exhaust space through which a heat exchange medium flows in the stacking direction of the power storage elements. The top surfaces of the battery packs, which are the surfaces separated from the bottom surface portion of the vertical surfaces of the battery pack. Frame members stacked up and down in a posture facing each other, and a sponge that is sandwiched between battery packs in the frame members stacked up and down to partition the flow path of the heat exchange medium in the upper and lower frame members, The bottom portion is formed in a hollow shape, communicates with the intake space, communicates with the first passage through which the heat exchange medium led to the battery pack passes, and communicates with the exhaust space, through which the heat exchange medium after heat exchange with the battery pack passes. And second passage is between the first passage and second passage in the lateral direction, characterized in that it comprises a third passage forming a discharge path of the gas generated inside the electric storage element.

本発明では、電池パックが底面部に固定されるフレーム部材を互いの電池パックの天面が対向する姿勢で上下２段に積み上げる。そして、本発明では、スポンジを電池パックの天面間に配置して該スポンジにより、上下２段のフレーム部材内の熱交換媒体の流通経路を区画する。本発明では、このスポンジを電池パックの天面で狭むので、該スポンジを固定でき、スポンジの固定部材を不要にできる。   In the present invention, the frame members, on which the battery packs are fixed to the bottom surface, are stacked in two upper and lower stages so that the top surfaces of the battery packs face each other. And in this invention, sponge is arrange | positioned between the top | upper surfaces of a battery pack, and the distribution path of the heat exchange medium in the frame member of two steps of upper and lower sides is divided by this sponge. In the present invention, since the sponge is narrowed by the top surface of the battery pack, the sponge can be fixed, and a sponge fixing member can be eliminated.

本発明では、例えばフレーム部材及び電池パックを１つのモジュールとし上下段に該モジュールを積み上げる場合、上段のモジュールを下段のモジュールと上下逆の姿勢にして下段のモジュールと連結することで電源装置を構成できる。このように、本発明では、上下段のモジュールを共通化でき、電源装置の組立性を向上できる。   In the present invention, for example, when the frame member and the battery pack are combined into one module, and the modules are stacked in the upper and lower stages, the power module is configured by connecting the upper module to the lower module in an upside down posture with respect to the lower module. it can. Thus, in the present invention, the upper and lower modules can be shared, and the assemblability of the power supply device can be improved.

本発明では、フレーム部材の底面部内に、電池パックへ導かれる熱交換媒体が通る第１通路、電池パックとの熱交換後の熱交換媒体が通る第２通路、および蓄電素子内部で発生したガスの排出経路を形成する第３通路があるので、各通路用の部材を不要にできる。
本発明では、フレーム部材の底面部内の第１〜第３通路を外気からの断熱空間として機能させることができ、フレーム部材に断熱材を別途設けることを不要にできる。 In the present invention, the first passage through which the heat exchange medium guided to the battery pack passes, the second passage through which the heat exchange medium after heat exchange with the battery pack passes, and the gas generated inside the storage element, in the bottom surface of the frame member Since there is a third passage that forms the discharge path, a member for each passage can be dispensed with.
In this invention, the 1st-3rd channel | path in the bottom face part of a frame member can be functioned as a heat insulation space from external air, and it becomes unnecessary to provide a heat insulating material separately in a frame member.

本発明では、フレーム部材の底面部内において、左右方向における第１通路及び第２通路の間に第３通路がある。そのため、本発明では、第２通路から第１通路への熱の伝達経路において、第３通路を断熱空間として機能させることができる。従って、本発明では、第２通路から第１通路への熱の伝達を抑制でき、第１通路内を通る熱交換媒体による電池パックの熱交換効率を向上できる。   In the present invention, there is a third passage between the first passage and the second passage in the left-right direction in the bottom surface portion of the frame member. Therefore, in the present invention, the third passage can function as a heat insulating space in the heat transfer path from the second passage to the first passage. Therefore, in the present invention, heat transfer from the second passage to the first passage can be suppressed, and the heat exchange efficiency of the battery pack by the heat exchange medium passing through the first passage can be improved.

本発明では、以上のように、第１〜第３通路用の部材や電池パックの断熱材、スポンジの固定部材を不要にできるので、部品点数を削減できる。   In the present invention, as described above, the members for the first to third passages, the heat insulating material for the battery pack, and the fixing member for the sponge can be eliminated, so that the number of parts can be reduced.

電源装置の構成を模式的に示す断面図である。It is sectional drawing which shows the structure of a power supply device typically. 図１のＡ−Ａ線断面図である。It is the sectional view on the AA line of FIG.

以下、本発明の実施形態について説明する。
図１は、電源装置１の構成を模式的に示す断面図である。図１において、Ｘ、Ｙ、Ｚ軸は互いに直交する。Ｚ軸は鉛直方向である上下方向に延びるものとする。
電源装置１は、大略、電池パック２、フレーム部材３、及びスポンジ４を備え、例えば電気自動車やハイブリッド自動車等の車両に搭載される。 Hereinafter, embodiments of the present invention will be described.
FIG. 1 is a cross-sectional view schematically showing the configuration of the power supply device 1. In FIG. 1, the X, Y, and Z axes are orthogonal to each other. The Z axis extends in the vertical direction, which is the vertical direction.
The power supply device 1 generally includes a battery pack 2, a frame member 3, and a sponge 4, and is mounted on a vehicle such as an electric vehicle or a hybrid vehicle.

電池パック２は、Ｙ方向に積層配置される複数の単電池２１（本発明の蓄電素子に相当する）により構成される組電池、及び該組電池を内部に収容する電池ケース２２を備える。電池パック２は、単電池２１の積層方向に対応してＹ方向に長尺状に形成される。単電池２１として、角型電池や円筒型電池を用いることができる。単電池２１は、例えば、ニッケル水素電池やリチウムイオン電池等の二次電池である。単電池２１の代わりに電気二重層キャパシタを用いることができる。   The battery pack 2 includes an assembled battery composed of a plurality of unit cells 21 (corresponding to the storage element of the present invention) stacked in the Y direction, and a battery case 22 that houses the assembled battery. The battery pack 2 is formed in a long shape in the Y direction corresponding to the stacking direction of the unit cells 21. As the unit cell 21, a square battery or a cylindrical battery can be used. The cell 21 is a secondary battery such as a nickel metal hydride battery or a lithium ion battery. An electric double layer capacitor can be used in place of the unit cell 21.

電池パック２は、台座５を介してフレーム部材３の後述する底面部３１に固定される。この際、底面部３１と対向する電池ケース２２の面２２１側に単電池２１の正極端子、負極端子、及び弁が位置する姿勢で、電池パック２は設置される。電池ケース２２内と台座５内とは連通する。単電池２１の内部でガスが発生し、単電池２１の内圧が所定圧に到達すると、単電池２１の弁が開弁する。単電池２１の内部のガスが弁を介して外部に排出されると、該ガスは、台座５内のスペースＳ３に案内される。なお、本実施形態では、分かりやすくするために図１に台座５を明記し、台座５を電池ケース２２と別体であるものとして説明している。しかしながら、台座５は、電池ケース２２の一部である台座部として電池ケース２２と一体に形成されていてもよい。   The battery pack 2 is fixed to a bottom surface portion 31 (described later) of the frame member 3 via the pedestal 5. At this time, the battery pack 2 is installed such that the positive electrode terminal, the negative electrode terminal, and the valve of the unit cell 21 are positioned on the surface 221 side of the battery case 22 facing the bottom surface portion 31. The battery case 22 and the pedestal 5 communicate with each other. When gas is generated inside the unit cell 21 and the internal pressure of the unit cell 21 reaches a predetermined pressure, the valve of the unit cell 21 is opened. When the gas inside the cell 21 is discharged to the outside through the valve, the gas is guided to the space S3 in the base 5. In the present embodiment, for the sake of clarity, the pedestal 5 is clearly shown in FIG. 1, and the pedestal 5 is described as being separate from the battery case 22. However, the pedestal 5 may be formed integrally with the battery case 22 as a pedestal portion that is a part of the battery case 22.

フレーム部材３は、単電池２１の積層方向であるＹ方向に延びてＺ方向の一面が開口する有底箱状であり、内部に電池パック２を収容するスペースを有する。フレーム部材３は、底面部３１、及びＹ方向の断面視において底面部３１のＸ方向両端部から起立する側壁部３２を備える。側壁部３２は、Ｙ方向に延びて冷却空気が流通する吸気スペースＳ１及び排気スペースＳ２を、Ｙ方向視における電池パック２の左右方向（Ｘ方向）の各側面との間に形成する。   The frame member 3 has a bottomed box shape that extends in the Y direction, which is the stacking direction of the unit cells 21, and opens on one surface in the Z direction, and has a space for accommodating the battery pack 2 therein. The frame member 3 includes a bottom surface portion 31 and side wall portions 32 that stand up from both ends in the X direction of the bottom surface portion 31 in a cross-sectional view in the Y direction. The side wall 32 forms an intake space S1 and an exhaust space S2 extending in the Y direction and through which cooling air flows, between each side surface of the battery pack 2 in the left-right direction (X direction) when viewed in the Y direction.

各スペースＳ１，Ｓ２は、電池パック２を挟んで位置し、それぞれ電池パック２の長手方向（Ｙ方向）に延びる。フレーム部材３は、底面部３１に対して電池パック２が固定され、電池パック２の天面２２２同士が対向する姿勢で上下２段に積層される。なお、電池パック２の上下方向の面のうち、フレーム部材３の底面部３１と対向する面が上述した面２２１であり、底面部３１から離隔する側の面が天面２２２となる。上下２段に積層されるフレーム部材３の組は、例えばＸ方向に隣接して３つ設けられる。   Each space S1, S2 is located across the battery pack 2, and extends in the longitudinal direction (Y direction) of the battery pack 2, respectively. The battery pack 2 is fixed to the bottom surface portion 31 of the frame member 3, and the frame member 3 is stacked in two upper and lower stages so that the top surfaces 222 of the battery pack 2 face each other. Of the surfaces in the vertical direction of the battery pack 2, the surface facing the bottom surface portion 31 of the frame member 3 is the above-described surface 221, and the surface separated from the bottom surface portion 31 is the top surface 222. For example, three sets of frame members 3 stacked in two upper and lower stages are provided adjacent to each other in the X direction.

底面部３１の肉厚部内において、Ｘ方向には、吸気スペースＳ１と連通する吸気通路３１１（本発明の第１通路に相当する）と、排気スペースＳ２と連通する排気通路３１２（本発明の第２通路に相当する）と、台座５内のスペースＳ３と連通する排出通路３１３（本発明の第３通路に相当する）とが形成される。排出通路３１３は、Ｘ方向において吸気通路３１１と排気通路３１２との間に形成される。底面部３１は、このように、肉厚部内に通路３１１〜３１３が形成される中空状となっている。   In the thick portion of the bottom surface portion 31, in the X direction, an intake passage 311 (corresponding to the first passage of the present invention) communicating with the intake space S1 and an exhaust passage 312 (corresponding to the first passage of the present invention) are communicated. And a discharge passage 313 (corresponding to the third passage of the present invention) communicating with the space S3 in the base 5 is formed. The discharge passage 313 is formed between the intake passage 311 and the exhaust passage 312 in the X direction. As described above, the bottom surface portion 31 has a hollow shape in which the passages 311 to 313 are formed in the thick portion.

底面部３１における電池パック２との対向面において、各通路３１１〜３１３に対応する位置には、Ｙ方向に沿ってスリット状に形成された開口部３１４〜３１６がある。開口部３１４は吸気通路３１１と吸気スペースＳ１とを連通させ、開口部３１５は排気スペースＳ２と排気通路３１２とを連通させ、開口部３１６は排出通路３１３と台座５内のスペースＳ３とを連通させる。   On the surface of the bottom surface 31 facing the battery pack 2, there are openings 314 to 316 formed in a slit shape along the Y direction at positions corresponding to the passages 311 to 313. The opening 314 communicates the intake passage 311 and the intake space S1, the opening 315 communicates the exhaust space S2 and the exhaust passage 312, and the opening 316 communicates the exhaust passage 313 and the space S3 in the pedestal 5. .

吸気通路３１１内には、電池パック２に導かれる冷却空気（本発明の熱交換媒体に相当する）が通る。冷却空気は、車室内等、電源装置１外から吸気通路３１１内に供給される。吸気通路３１１内をＹ方向に進む冷却空気は、開口部３１４を介して吸気スペースＳ１に流入する。そして、吸気スペースＳ１内に流入した冷却空気は、吸気通路３１１が延びる方向と直交するＸ方向に進んで電池パック２内を流れる。冷却空気は、電池パック２内において単電池２１間をＸ方向に進みながら単電池２１と熱交換を行う。電池パック２内で熱交換を行った冷却空気は、Ｘ方向において吸気スペースＳ１と逆側に位置する排気スペースＳ２に排気される。   Cooling air (corresponding to the heat exchange medium of the present invention) guided to the battery pack 2 passes through the intake passage 311. The cooling air is supplied into the intake passage 311 from outside the power supply device 1 such as in the passenger compartment. The cooling air traveling in the Y direction through the intake passage 311 flows into the intake space S1 through the opening 314. Then, the cooling air flowing into the intake space S1 proceeds in the X direction orthogonal to the direction in which the intake passage 311 extends and flows in the battery pack 2. The cooling air exchanges heat with the single cells 21 while proceeding in the X direction between the single cells 21 in the battery pack 2. The cooling air that has exchanged heat in the battery pack 2 is exhausted to an exhaust space S2 located on the opposite side of the intake space S1 in the X direction.

排気通路３１２内には、単電池２１冷却後の冷却空気が通る。具体的に、単電池２１間をＸ方向に通過した単電池２１冷却後の冷却空気は、排気スペースＳ２に進んだ後、開口部３１５を介して排気通路３１２内に進む。排気スペースＳ２から排気通路３１２に進んだ冷却空気は、排気通路３１２内をＹ方向に進み、車室内等に排気される。   Cooling air after cooling the cell 21 passes through the exhaust passage 312. Specifically, the cooled air after cooling the single cells 21 that has passed between the single cells 21 in the X direction proceeds to the exhaust space S <b> 2 and then proceeds into the exhaust passage 312 through the opening 315. The cooling air that has advanced from the exhaust space S2 to the exhaust passage 312 travels in the Y direction in the exhaust passage 312 and is exhausted into the vehicle interior or the like.

排出通路３１３は、単電池２１の内部で発生するガスの排出経路を形成する。単電池２１の内部でガスが発生し、該ガスが弁を介して外部に排出されると、該ガスは、台座５により台座５内のスペースＳ３に集煙される。スペースＳ３に集煙されたガスは、開口部３１６を介して排出通路３１３内に進んだ後、排出通路３１３内をＹ方向に進み、吸気通路３１１及び排気通路３１２と独立した経路で車両外等に排気される。   The discharge passage 313 forms a discharge path for gas generated inside the unit cell 21. When gas is generated inside the unit cell 21 and the gas is discharged outside through the valve, the gas is collected by the pedestal 5 into the space S3 in the pedestal 5. The gas collected in the space S3 travels into the exhaust passage 313 through the opening 316, then travels in the exhaust passage 313 in the Y direction, and is separated from the intake passage 311 and the exhaust passage 312 on the outside of the vehicle. Exhausted.

側壁部３２には、電池パック２に接続されるワイヤーハーネス等の電線２１３を保持する保持部３２１がある。フレーム部材３のＸ方向の各側壁部３２の先端部には、Ｙ方向に沿って折曲片３２２が形成されている。折曲片３２２は、側壁部３２からフレーム部材３の内側に折曲する。   The side wall portion 32 has a holding portion 321 that holds an electric wire 213 such as a wire harness connected to the battery pack 2. A bent piece 322 is formed along the Y direction at the tip of each side wall 32 in the X direction of the frame member 3. The bent piece 322 is bent from the side wall portion 32 to the inside of the frame member 3.

スポンジ４は、合成樹脂製かつ多孔質であり、可撓性を有する。スポンジ４は、上下２段に積層される各フレーム部材３内の電池パック２に狭まれ、固定される。また、スポンジ４は、上下２段に積層されるフレーム部材３（以下、上下段のフレーム部材３と記載する）の各折曲片３２２にも狭まれる。スポンジ４は、上下段の各フレーム部材３の開口部を閉塞し、上下段のフレーム部材３内の吸気スペースＳ１同士及び排気スペースＳ２同士を区画する。これにより、上下段のフレーム部材３内の冷却空気の流通経路が区画され、上下段のフレーム部材３内に流通経路が独立に形成される。   The sponge 4 is made of a synthetic resin, is porous, and has flexibility. The sponge 4 is narrowed and fixed to the battery pack 2 in each frame member 3 stacked in two upper and lower stages. Further, the sponge 4 is also narrowed by the bent pieces 322 of the frame member 3 (hereinafter, referred to as the upper and lower frame members 3) stacked in two upper and lower stages. The sponge 4 closes the openings of the upper and lower frame members 3 to partition the intake spaces S1 and the exhaust spaces S2 in the upper and lower frame members 3. Thereby, the flow path of the cooling air in the upper and lower frame members 3 is partitioned, and the flow path is independently formed in the upper and lower frame members 3.

以上の本実施形態では、電池パック２が固定されるフレーム部材３を、上下方向において互いの電池パック２の天面２２２が向き合うように天地を反転して配置している。また、本実施形態では、スポンジ４を電池パック２の天面２２２間に配置し、スポンジ４により上下段の各フレーム部材３の開口部を閉塞するとともに、スポンジ４を上段のフレーム部材３の床面として用いている。本実施形態では、このスポンジ４を上下段の電池パック２の天面２２２で狭むので、スポンジ４を固定でき、スポンジ４の固定部材を不要にできる。   In the above-described embodiment, the frame member 3 to which the battery pack 2 is fixed is arranged with the top and bottom reversed so that the top surfaces 222 of the battery packs 2 face each other in the vertical direction. Further, in the present embodiment, the sponge 4 is disposed between the top surfaces 222 of the battery pack 2, the openings of the upper and lower frame members 3 are closed by the sponge 4, and the sponge 4 is placed on the floor of the upper frame member 3. It is used as a surface. In the present embodiment, since the sponge 4 is narrowed by the top surface 222 of the upper and lower battery packs 2, the sponge 4 can be fixed, and the fixing member for the sponge 4 can be made unnecessary.

本実施形態では、例えばフレーム部材３及び電池パック２を１つのモジュールとする場合、上段に配置されるモジュールは下段のモジュールと上下逆にしたものであり、上下段のモジュールを共通化できる。そして、本実施形態では、モジュールを上下段に積み上げる際に、上段のモジュールを下段のモジュールと上下逆の姿勢にして下段のモジュールと連結することで電源装置１を構成できるため、電源装置１の組立性を向上できる。   In the present embodiment, for example, when the frame member 3 and the battery pack 2 are formed as one module, the modules arranged in the upper stage are upside down with respect to the lower module, and the upper and lower modules can be shared. In the present embodiment, when the modules are stacked in the upper and lower stages, the power supply apparatus 1 can be configured by connecting the lower module to the lower module so that the upper module is placed upside down with respect to the lower module. Assemblability can be improved.

本実施形態では、吸気通路３１１等の通路３１１〜３１３をフレーム部材３と一体に形成しているので、各通路３１１〜３１３用の部材を不要にできる。
本実施形態では、フレーム部材３の底面部３１内に吸気通路３１１等の通路３１１〜３１３を形成し、底面部３１を中空状に形成している。そのため、本実施形態では、各通路３１１〜３１３を、電池パック２に対して外気からの断熱空間として機能させることができる。これにより、本実施形態では、例えば外気低温時に、電池パック２が所定温度以下となることを抑制でき、フレーム部材３に断熱材を別途設けることを不要にできる。 In the present embodiment, since the passages 311 to 313 such as the intake passage 311 are formed integrally with the frame member 3, members for the respective passages 311 to 313 can be made unnecessary.
In the present embodiment, passages 311 to 313 such as an intake passage 311 are formed in the bottom surface portion 31 of the frame member 3, and the bottom surface portion 31 is formed in a hollow shape. Therefore, in this embodiment, each of the passages 311 to 313 can function as a heat insulating space from the outside air with respect to the battery pack 2. Thereby, in this embodiment, it can suppress that the battery pack 2 becomes below predetermined temperature, for example at the time of low outdoor temperature, and can make it unnecessary to provide a heat insulating material in the frame member 3 separately.

本実施形態では、フレーム部材３の底面部３１内において吸気通路３１１と排気通路３１２とがＸ方向に並んで形成されるが、これら吸気通路３１１と排気通路３１２との間に排出通路３１３が形成される。そのため、本実施形態では、排気通路３１２から吸気通路３１１への熱の伝達経路において、排出通路３１３を熱交換前後の冷却空気の断熱空間として機能させることができるので、排気通路３１２から吸気通路３１１への熱の伝達を抑制でき、吸気通路３１１内を通る冷却空気による電池パック２の冷却効率を向上できる。   In the present embodiment, the intake passage 311 and the exhaust passage 312 are formed side by side in the X direction in the bottom surface portion 31 of the frame member 3, and the discharge passage 313 is formed between the intake passage 311 and the exhaust passage 312. Is done. Therefore, in the present embodiment, in the heat transfer path from the exhaust passage 312 to the intake passage 311, the discharge passage 313 can function as a heat insulating space for cooling air before and after heat exchange. Therefore, the cooling efficiency of the battery pack 2 by the cooling air passing through the intake passage 311 can be improved.

本実施形態では、以上のように、吸気ダクト等の通路３１１〜３１３用の部材や、電池パック２の断熱材、スポンジ４の固定部材を不要にできるので、部品点数を削減できるとともに、電源装置１を小型化できる。   In the present embodiment, as described above, the members for the passages 311 to 313 such as the intake duct, the heat insulating material of the battery pack 2 and the fixing member of the sponge 4 can be eliminated, so that the number of parts can be reduced and the power supply device 1 can be reduced in size.

図２は、冷却空気の経路を模式的に示す図１のＡ−Ａ線断面図である。
図２に示すように、上下段のフレーム部材３は、スポンジ４により独立に区画される。また、電池ケース２２の外面には、Ｙ方向に隙間を空けて並ぶ単電池２１間の該隙間に対応する位置にスリット状の開口部２３がある。図２の上段のフレーム部材３内において示すように、車室内等から供給された冷却空気は、吸気通路３１１から吸気スペースＳ１に進んだ後、電池ケース２２外面の開口部２３を通って電池ケース２２内に進む。電池ケース２２内に進んだ冷却空気は、単電池２１間の隙間をＸ方向に進みながら単電池２１を冷却する。 FIG. 2 is a cross-sectional view taken along line AA of FIG. 1 schematically showing the path of the cooling air.
As shown in FIG. 2, the upper and lower frame members 3 are independently partitioned by a sponge 4. Further, on the outer surface of the battery case 22, there is a slit-like opening 23 at a position corresponding to the gap between the cells 21 arranged with a gap in the Y direction. As shown in the upper frame member 3 in FIG. 2, the cooling air supplied from the passenger compartment or the like proceeds to the intake space S <b> 1 from the intake passage 311, and then passes through the opening 23 on the outer surface of the battery case 22. Proceed to 22. The cooling air that has advanced into the battery case 22 cools the unit cells 21 while proceeding in the gap between the unit cells 21 in the X direction.

単電池２１を冷却した冷却空気は、電池ケース２２外面における図２の紙面奥側の開口部２３を介して、図２の紙面奥側にある排気スペースＳ２に進む。上段のフレーム部材３内において排気スペースＳ２に進んだ冷却空気の経路は、図２において、下段のフレーム部材３内の冷却空気の経路に参照される。排気スペースＳ２に進んだ単電池２１冷却後の冷却空気は、排気スペースＳ２から排気通路３１２内に進み、車両外等へと排出される。   The cooling air that has cooled the unit cell 21 proceeds to the exhaust space S2 on the back side of the paper in FIG. 2 through the opening 23 on the back side of the paper in FIG. The path of the cooling air that has advanced to the exhaust space S2 in the upper frame member 3 is referred to as the path of the cooling air in the lower frame member 3 in FIG. The cooling air after cooling the cell 21 that has advanced to the exhaust space S2 proceeds from the exhaust space S2 into the exhaust passage 312 and is discharged to the outside of the vehicle or the like.

なお、図２に示すように、フレーム部材３内において、吸気スペースＳ１と排気スペースＳ２以外のスペースにはスポンジ４が充填されている。また、側壁部３２にはフランジ部３２３が形成されている。上下段のフレーム部材３の各フランジ部３２３は、ボルト締め等されて上下段のフレーム部材３の接続に利用される。   As shown in FIG. 2, in the frame member 3, a space other than the intake space S1 and the exhaust space S2 is filled with a sponge 4. Further, a flange portion 323 is formed on the side wall portion 32. The flange portions 323 of the upper and lower frame members 3 are bolted or the like and used for connecting the upper and lower frame members 3.

１…電源装置、２…電池パック、３…フレーム部材、４…スポンジ、２１…単電池（蓄電素子）、３１…底面部、３２…側壁部、２２２…天面、３１１…吸気通路（第１通路）、３１２…排気通路（第２通路）、３１３…排出通路（第３通路）、Ｓ１…吸気スペース、Ｓ２…排気スペース、Ｘ…蓄電素子の積層方向視における電池パックの左右方向、Ｙ…単電池の積層方向。   DESCRIPTION OF SYMBOLS 1 ... Power supply device, 2 ... Battery pack, 3 ... Frame member, 4 ... Sponge, 21 ... Single cell (electric storage element), 31 ... Bottom surface part, 32 ... Side wall part, 222 ... Top surface, 311 ... Intake passage (1st (Passage), 312 ... exhaust passage (second passage), 313 ... discharge passage (third passage), S1 ... intake space, S2 ... exhaust space, X ... left-right direction of battery pack as viewed in stacking direction of power storage elements, Y ... Cell stacking direction.

Claims (1)

複数の蓄電素子が積層された電池パックと、
前記電池パックが固定される底面部と、前記蓄電素子の積層方向に延びて熱交換媒体が流通する吸気スペース及び排気スペースを前記積層方向視における前記電池パックの左右方向の各側面との間に形成する側壁部と、を有し、前記電池パックの上下方向の面のうち前記底面部から離隔する側の面である前記電池パックの天面同士が対向する姿勢で上下に積み上げられたフレーム部材と、
上下に積み上げられた前記フレーム部材内の前記電池パックに挟まれ、上下の前記フレーム部材内の前記熱交換媒体の流通経路を区画するスポンジと、を備え、
前記底面部は中空状に形成され、前記吸気スペースと連通し、前記電池パックへ導かれる前記熱交換媒体が通る第１通路と、前記排気スペースと連通し、前記電池パックとの熱交換後の前記熱交換媒体が通る第２通路と、前記左右方向において前記第１通路及び第２通路の間にあり、前記蓄電素子内部で発生したガスの排出経路を形成する第３通路と、を備えることを特徴とする電源装置。 A battery pack in which a plurality of power storage elements are stacked;
Between a bottom surface portion to which the battery pack is fixed and an intake space and an exhaust space that extend in the stacking direction of the power storage elements and through which a heat exchange medium flows, between each side surface in the left-right direction of the battery pack in the stacking direction view. A frame member that is stacked up and down in a posture in which the top surfaces of the battery pack, which are surfaces separated from the bottom surface portion, of the vertical surfaces of the battery pack are opposed to each other. When,
A sponge sandwiched between the battery packs in the frame member stacked up and down, and partitioning the flow path of the heat exchange medium in the upper and lower frame members,
The bottom surface portion is formed in a hollow shape, communicates with the intake space, communicates with the first passage through which the heat exchange medium guided to the battery pack passes, and the exhaust space, and after heat exchange with the battery pack. A second passage through which the heat exchange medium passes, and a third passage that is between the first passage and the second passage in the left-right direction and forms a discharge path for the gas generated inside the power storage element. A power supply characterized by.
JP2013258537A 2013-12-13 2013-12-13 Power supply device Pending JP2015115285A (en)

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