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JP6075631B2 - Battery cooling device - Google Patents

Battery cooling device Download PDF

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Publication number
JP6075631B2
JP6075631B2 JP2013076740A JP2013076740A JP6075631B2 JP 6075631 B2 JP6075631 B2 JP 6075631B2 JP 2013076740 A JP2013076740 A JP 2013076740A JP 2013076740 A JP2013076740 A JP 2013076740A JP 6075631 B2 JP6075631 B2 JP 6075631B2
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storage battery
cooling device
cooling
refrigerant
unit
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JP2014203564A (en
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達生 川口
達生 川口
大塚　隆
隆 大塚
季之 本橋
季之 本橋
哲 佐久間
哲 佐久間
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Marelli Corp
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Calsonic Kansei Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Description

本発明は蓄電池の冷却装置に関するものである。   The present invention relates to a storage battery cooling device.

従来、冷却部材の両端面の中央付近に、冷媒の流入口、または冷媒の流出口を形成し、流入口を形成した端面から流出口を設けた端面に向けて冷媒を流し、単電池を冷却するものが特許文献１に開示されている。   Conventionally, a refrigerant inlet or a refrigerant outlet is formed near the center of both end faces of the cooling member, and the refrigerant flows from the end face where the inlet is formed toward the end face where the outlet is provided to cool the unit cell. This is disclosed in Patent Document 1.

特開２０１２−１５６１２４号公報JP 2012-156124 A

しかし、上記の技術では、流入口に冷媒を導入する導入管を接続し、流出口から冷媒を排出する排出管を接続すると、冷媒の流れ方向における冷却装置の長さが長くなる、といった問題点がある。   However, in the above-described technology, there is a problem that the length of the cooling device in the refrigerant flow direction becomes longer when an inlet pipe for introducing the refrigerant is connected to the inlet and an outlet pipe for discharging the refrigerant from the outlet is connected. There is.

これに対して、端面と直交する側面に流入口と流出口とを形成することも考えられる。この場合、流入口を介して冷却部材に供給された冷媒の多くは、流入口が形成された側面と向かい合う側面に向けて流れ、流入口が形成された側面側を流れる冷媒の流速は低い。そのため、発熱量が多くなる単電池の端子部が流入口を設けた側面側に配置された場合に、端子部付近を十分に冷却することができない。   On the other hand, it is also conceivable to form an inflow port and an outflow port on the side surface orthogonal to the end surface. In this case, most of the refrigerant supplied to the cooling member via the inflow port flows toward the side surface facing the side surface where the inflow port is formed, and the flow rate of the refrigerant flowing through the side surface side where the inflow port is formed is low. Therefore, when the terminal portion of the unit cell that generates a large amount of heat is disposed on the side surface provided with the inlet, the vicinity of the terminal portion cannot be sufficiently cooled.

本発明はこのような問題点を解決するために発明されたもので、冷媒の流れ方向における冷却装置の長さを短くし、単電池の端子部付近を集中して冷却可能にする。   The present invention has been invented in order to solve such problems. The length of the cooling device in the refrigerant flow direction is shortened, and the vicinity of the terminal portion of the unit cell can be concentrated and cooled.

本発明のある態様に係る蓄電池の冷却装置は、蓄電池が載置されて、蓄電池を冷却する蓄電池の冷却装置であって、蓄電池の下部壁面に沿って延設され、内部に冷媒が流れる流路が並列して形成され、下部壁面側から蓄電池を冷却する冷却部と、流路の並列方向に沿って延設され、下部壁面と直交する方向に沿って冷却部に冷媒を供給する供給部とを備え、冷却部には、蓄電池の端子部からの距離が短い箇所に設けた第１流路における冷媒の流速が、端子部からの距離が長い箇所に設けた第２流路における冷媒の流速よりも高くなるように供給孔が形成される。 A cooling device for a storage battery according to an aspect of the present invention is a cooling device for a storage battery in which the storage battery is placed and cools the storage battery, and is a flow path that extends along a lower wall surface of the storage battery and through which a refrigerant flows. Formed in parallel, a cooling unit that cools the storage battery from the lower wall surface side, and a supply unit that extends along the parallel direction of the flow path and supplies the refrigerant to the cooling unit along the direction orthogonal to the lower wall surface; And the cooling part has a refrigerant flow rate in the first flow path provided at a location where the distance from the terminal portion of the storage battery is short, and a refrigerant flow rate in the second flow path provided at a location where the distance from the terminal portion is long. The supply hole is formed so as to be higher.

この態様によると、供給部を流路の並列方向に沿って延設し、蓄電池の端子部からの距離が短い第１流路における冷媒の流速が、蓄電池からの距離が長い第２流路における冷媒の流速よりも高くなるように供給孔を設けることで、流路を流れる冷媒の流れ方向における長さを短くし、かつ蓄電池の端子部付近を集中して冷却することができる。   According to this aspect, the supply section is extended along the parallel direction of the flow paths, and the flow rate of the refrigerant in the first flow path with a short distance from the terminal portion of the storage battery is in the second flow path with a long distance from the storage battery. By providing the supply hole so as to be higher than the flow rate of the refrigerant, the length in the flow direction of the refrigerant flowing through the flow path can be shortened, and the vicinity of the terminal portion of the storage battery can be concentrated and cooled.

第１実施形態の蓄電池、及び冷却装置の正面図である。It is a front view of the storage battery and cooling device of a 1st embodiment. 第１実施形態の蓄電池、及び冷却装置の上面図である。It is a top view of the storage battery and cooling device of a 1st embodiment. 図２のIII−III断面図である。FIG. 3 is a sectional view taken along line III-III in FIG. 2. 冷却装置の上面図である。It is a top view of a cooling device. 図４のV−V断面図である。It is VV sectional drawing of FIG. 第２実施形態における蓄電池の端子部の位置を示す図である。It is a figure which shows the position of the terminal part of the storage battery in 2nd Embodiment. 第２実施形態の冷却装置の上面図である。It is a top view of the cooling device of a 2nd embodiment. 図７のVIII−VIII断面図である。It is VIII-VIII sectional drawing of FIG. 第３実施形態における蓄電池の端子部の位置を示す図である。It is a figure which shows the position of the terminal part of the storage battery in 3rd Embodiment. 第３実施形態の冷却装置の上面図である。It is a top view of the cooling device of a 3rd embodiment. 図１０のXI−XI断面図である。It is XI-XI sectional drawing of FIG. 本実施形態の変形例を示す図である。It is a figure which shows the modification of this embodiment.

本発明の第１実施形態の構成について図１〜図３を用いて説明する。図１は蓄電池６、及び冷却装置１の正面図である。図２は蓄電池６、及び冷却装置１の上面図である。図３は図２のIII−III断面図である。   The configuration of the first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view of the storage battery 6 and the cooling device 1. FIG. 2 is a top view of the storage battery 6 and the cooling device 1. 3 is a cross-sectional view taken along the line III-III in FIG.

冷却装置１は、蓄電池６と共にケース９に収容され、ケース９に取り付けられる。冷却装置１の上に蓄電池６が設けられる。ここでは、冷却装置１が水平方向に沿って置かれているものとする。なお、蓄電池６は複数の単電池７を並べて構成される組電池であり、単電池７の端子部８が単電池７の側面７ｂに形成され、端子部８は同じ方向を向くように配置される。   The cooling device 1 is accommodated in the case 9 together with the storage battery 6 and attached to the case 9. A storage battery 6 is provided on the cooling device 1. Here, it is assumed that the cooling device 1 is placed along the horizontal direction. In addition, the storage battery 6 is an assembled battery in which a plurality of unit cells 7 are arranged, the terminal portion 8 of the unit cell 7 is formed on the side surface 7b of the unit cell 7, and the terminal unit 8 is arranged to face the same direction. The

次に冷却装置１について図４、図５をさらに用いて説明する。図４は冷却装置１の上面図である。図５は図４のV−V断面図である。   Next, the cooling device 1 will be described with reference to FIGS. FIG. 4 is a top view of the cooling device 1. 5 is a cross-sectional view taken along the line V-V in FIG.

冷却装置１は、冷却部２と、供給部３と、排出部４とを備える。冷却装置１は、蓄電池６の下面６ａ（単電池７の下面）に当接し、蓄電池６を蓄電池６の下面６ａ側から冷却する。   The cooling device 1 includes a cooling unit 2, a supply unit 3, and a discharge unit 4. The cooling device 1 contacts the lower surface 6 a of the storage battery 6 (the lower surface of the unit cell 7) and cools the storage battery 6 from the lower surface 6 a side of the storage battery 6.

冷却部２は、単電池７の並び方向、つまり蓄電池６の下面６ａに沿って延設される。冷却部２は、蓄電池６の下面６ａと当接する上面部２０と、上面部２０と加締め加工、ロウ付けなどにより接合し、上面部２０との間に冷媒が流れる隙間を形成する下面部２１と、上面部２０と下面部２１とによって形成された隙間を複数の流路２３ａ〜２３ｄに仕切る仕切部２２とを備える。なお、蓄電池６と冷却部２との間に伝熱部材を設けてもよい。   The cooling unit 2 extends along the direction in which the cells 7 are arranged, that is, along the lower surface 6 a of the storage battery 6. The cooling unit 2 is joined to the upper surface part 20 that contacts the lower surface 6 a of the storage battery 6, and the lower surface part 21 that joins the upper surface part 20 by caulking, brazing, etc. and forms a gap through which refrigerant flows between the upper surface part 20. And a partition 22 that partitions the gap formed by the upper surface 20 and the lower surface 21 into a plurality of flow paths 23a to 23d. A heat transfer member may be provided between the storage battery 6 and the cooling unit 2.

仕切部２２は、単電池７の並び方向（冷却部２の長手方向）に平行して複数形成される。これにより、上面部２０、下面部２１、及び仕切部２２によって冷却部２に単電池７の並び方向に沿った複数の流路２３ａ〜２３ｄが形成され、流路２３ａ〜２３ｄを冷媒が流れる。なお、仕切部２２は、下面部２１、または上面部２０の一部を変形させて形成してもよく、また下面部２１、及び上面部２０と異なる部材によって形成してもよい。   A plurality of partition portions 22 are formed in parallel to the arrangement direction of the cells 7 (longitudinal direction of the cooling portion 2). As a result, the upper surface portion 20, the lower surface portion 21, and the partition portion 22 form a plurality of flow paths 23a to 23d along the arrangement direction of the unit cells 7 in the cooling unit 2, and the refrigerant flows through the flow paths 23a to 23d. The partition 22 may be formed by deforming a part of the lower surface 21 or the upper surface 20, or may be formed by a member different from the lower surface 21 and the upper surface 20.

下面部２１には、供給部３から冷却部２に冷媒を供給する第１供給孔２４と、冷却部２の冷媒を排出部４に排出する第１排出孔２５とが形成される。第１供給孔２４と第１排出孔２５とは、端子部８からの距離が短い流路２３ａにおける冷媒の流速が、端子部８からの距離が長い流路２３ｄにおける冷媒の流速よりも高くなるように形成される。具体的には、図２に示すように、第１供給孔２４と第１排出孔２５とは、端子部８からの距離が短い流路２３ａの延長上に形成され、端子部８との距離が短い流路２３ａを挟むように流路２３ａの両端側に形成される。   A first supply hole 24 that supplies the refrigerant from the supply unit 3 to the cooling unit 2 and a first discharge hole 25 that discharges the refrigerant from the cooling unit 2 to the discharge unit 4 are formed in the lower surface part 21. In the first supply hole 24 and the first discharge hole 25, the refrigerant flow rate in the flow path 23 a having a short distance from the terminal portion 8 is higher than the refrigerant flow rate in the flow path 23 d having a long distance from the terminal portion 8. Formed as follows. Specifically, as shown in FIG. 2, the first supply hole 24 and the first discharge hole 25 are formed on the extension of the flow path 23 a having a short distance from the terminal portion 8, and the distance from the terminal portion 8. Is formed on both ends of the flow path 23a so as to sandwich the short flow path 23a.

供給部３は、流路２３ａ〜２３ｄの並列方向に沿って延設される。供給部３は、円筒状の管の先端側を鉛直方向に押圧して形成される第１扁平部３０を備える。   The supply part 3 is extended along the parallel direction of the flow paths 23a-23d. The supply unit 3 includes a first flat portion 30 formed by pressing the tip side of a cylindrical tube in the vertical direction.

第１扁平部３０は、鉛直方向の長さが冷却部２の長手方向の長さよりも短く、第１供給孔２４の位置、形状に合わせて第２供給孔３１が下面部２１側に形成される。第２供給孔３１は、端子部８からの距離が短い流路２３ａの延長上に形成される。第１扁平部３０は下面部２１に接合される。第１扁平部３０の先端は閉塞されている。   The first flat portion 30 has a length in the vertical direction shorter than a length in the longitudinal direction of the cooling portion 2, and a second supply hole 31 is formed on the lower surface portion 21 side according to the position and shape of the first supply hole 24. The The second supply hole 31 is formed on the extension of the flow path 23 a that is short from the terminal portion 8. The first flat portion 30 is joined to the lower surface portion 21. The tip of the first flat part 30 is closed.

供給部３は、ケース９の外部に設けた配管（図示せず）に連結しており、第１扁平部３０、及び第２供給孔３１を介して冷媒を冷却部２に供給する。冷媒は、第２供給孔３１から鉛直方向上向きに冷却部２に供給される。   The supply unit 3 is connected to a pipe (not shown) provided outside the case 9, and supplies the refrigerant to the cooling unit 2 through the first flat part 30 and the second supply hole 31. The refrigerant is supplied from the second supply hole 31 to the cooling unit 2 in the vertical direction upward.

排出部４は、供給部３と同様に第２扁平部４０が形成されており、詳しい説明は省略するが、第１排出孔２５の位置、形状に合わせて第２排出孔４１が形成されている。排出部４は、ケース９の外部に設けた配管（図示せず）に連結しており、第２排出孔４１を介して冷却部２から冷媒を排出する。   The discharge part 4 is formed with a second flat part 40 as in the case of the supply part 3, and detailed description is omitted, but a second discharge hole 41 is formed according to the position and shape of the first discharge hole 25. Yes. The discharge unit 4 is connected to a pipe (not shown) provided outside the case 9 and discharges the refrigerant from the cooling unit 2 via the second discharge hole 41.

本実施形態では、第１供給孔２４、及び第２供給孔３１と、第１排出孔２５、及び第２供給孔４１とが端子部８からの距離が短い流路２３ａの両端を挟むように形成されている。   In the present embodiment, the first supply hole 24 and the second supply hole 31, the first discharge hole 25, and the second supply hole 41 sandwich both ends of the flow path 23a that is short from the terminal portion 8. Is formed.

次に本実施形態の作用について説明する。   Next, the operation of this embodiment will be described.

単電池７は端子部８の発熱量が大きいことが知られており、端子部８側の温度が高くなる。そのため、端子部８側の流路２３ａに冷媒を多く流すことが望ましい。   The unit cell 7 is known to generate a large amount of heat at the terminal 8, and the temperature at the terminal 8 is increased. For this reason, it is desirable to flow a large amount of refrigerant through the channel 23a on the terminal portion 8 side.

本実施形態では、流路２３ａ〜２３ｄの並列方向に沿って供給部３、及び排出部４を設け、供給部３により第１供給孔２４（第２供給孔３１）を介して鉛直方向上向きに冷媒を冷却部２に供給する。冷却部２に供給された冷媒は、流路２３ａ〜２３ｄを流れ、蓄電池６を下面６ａ側から冷却し、第２排出孔４１を介して冷却部２から排出される。端子部８からの距離が短い流路２３ａの延長上に、第１供給孔２４（第２供給孔３１）と、第１排出孔２５（第２排出孔４１）とを設けることで、第１供給孔２４を介して冷却部２に供給された冷媒は、端子部８からの距離が長い流路２３ｄよりも端子部８からの距離が短い流路２３ａを流れ易くなる。そのため、端子部８からの距離が短い流路２３ａにおける冷媒の流速が、端子部８からの距離が長い流路２３ｄにおける冷媒の流速よりも高くなり、端子部８側の蓄電池６が集中して冷却される。   In this embodiment, the supply part 3 and the discharge part 4 are provided along the parallel direction of the flow paths 23a to 23d, and the supply part 3 causes the first supply hole 24 (second supply hole 31) to be directed upward in the vertical direction. The refrigerant is supplied to the cooling unit 2. The refrigerant supplied to the cooling unit 2 flows through the flow paths 23a to 23d, cools the storage battery 6 from the lower surface 6a side, and is discharged from the cooling unit 2 through the second discharge hole 41. By providing the first supply hole 24 (second supply hole 31) and the first discharge hole 25 (second discharge hole 41) on the extension of the flow path 23a having a short distance from the terminal portion 8, the first supply hole 24 (second supply hole 31) is provided. The refrigerant supplied to the cooling unit 2 through the supply hole 24 is more likely to flow through the flow path 23a having a shorter distance from the terminal unit 8 than the flow path 23d having a longer distance from the terminal unit 8. Therefore, the flow rate of the refrigerant in the flow path 23a having a short distance from the terminal portion 8 is higher than the flow rate of the refrigerant in the flow path 23d having a long distance from the terminal portion 8, and the storage battery 6 on the terminal portion 8 side is concentrated. To be cooled.

本実施形態の効果について説明する。   The effect of this embodiment will be described.

流路２３ａ〜２３ｄに沿って延設される供給部３を設け、供給部３から鉛直方向上向きに冷媒を冷却部２に供給する。そして、蓄電池６の端子部８からの距離が短い流路２３ａにおける冷媒の流速が、端子部８からの距離が長い流路２３ｄにおける冷媒の流速よりも高くなるように下面部２１に第１供給孔２４を形成する。これにより、発熱量が多い端子部８付近を冷媒によって集中して冷却し、端子部８付近の蓄電池６の温度が高くなることを抑制することができる。また、冷媒の流れ方向における冷却装置１の長さを短くすることができる。   A supply unit 3 extending along the flow paths 23a to 23d is provided, and the coolant is supplied from the supply unit 3 to the cooling unit 2 in the vertical direction. Then, the first supply is made to the lower surface portion 21 so that the flow rate of the refrigerant in the flow path 23a with a short distance from the terminal portion 8 of the storage battery 6 is higher than the flow rate of the refrigerant in the flow path 23d with a long distance from the terminal portion 8. Hole 24 is formed. Thereby, the vicinity of the terminal portion 8 having a large amount of generated heat can be concentrated and cooled by the refrigerant, and the temperature of the storage battery 6 in the vicinity of the terminal portion 8 can be suppressed from increasing. Further, the length of the cooling device 1 in the refrigerant flow direction can be shortened.

供給部３は、円筒状の管の先端部を鉛直方向に押圧して形成され、鉛直方向の長さが冷却部２の長手方向の長さよりも短い第１扁平部３０を備え、第１扁平部３０に形成した第２供給孔３１を介して、供給部３から鉛直方向上向きに冷媒を冷却部２に供給する。また、排出部４も供給部３と同様に第２扁平部４０を備え、冷却部２から冷媒を排出する。これらにより、鉛直方向の冷却装置１の長さを短くすることができる。また、第１扁平部３０によって流速が高くなった冷媒を冷却部２に供給することができ、蓄電池６を素早く冷却することができる。   The supply unit 3 is formed by pressing the tip of a cylindrical tube in the vertical direction, and includes a first flat unit 30 having a vertical length shorter than the length of the cooling unit 2 in the longitudinal direction. Through the second supply hole 31 formed in the part 30, the coolant is supplied from the supply part 3 to the cooling part 2 in the vertical direction. Similarly to the supply unit 3, the discharge unit 4 includes a second flat portion 40 and discharges the refrigerant from the cooling unit 2. Thereby, the length of the cooling device 1 in the vertical direction can be shortened. Moreover, the refrigerant | coolant whose flow velocity became high by the 1st flat part 30 can be supplied to the cooling part 2, and the storage battery 6 can be cooled rapidly.

第１供給孔２４を端子部８からの距離が短い流路２３ａの延長上に形成することで、流路２３ａにおける冷媒の流速を高くすることができ、端子部８付近の蓄電池６の温度が高くなることを抑制することができる。さらに、第１排出孔２５を端子部８からの距離が短い流路２３ａの延長上に形成することで、流路２３ａにおける冷媒の流速を高くすることができ、端子部８付近の蓄電池６の温度が高くなることを抑制することができる。   By forming the first supply hole 24 on the extension of the flow path 23a having a short distance from the terminal portion 8, the flow rate of the refrigerant in the flow path 23a can be increased, and the temperature of the storage battery 6 near the terminal portion 8 is increased. It can suppress becoming high. Furthermore, by forming the first discharge hole 25 on the extension of the flow path 23a having a short distance from the terminal portion 8, the flow rate of the refrigerant in the flow path 23a can be increased, and the storage battery 6 near the terminal portion 8 It can suppress that temperature becomes high.

隣接する流路２３ａ〜２３ｄが仕切部２２によって仕切られて形成されるので、端子部８からの距離が短い流路２３ａを流れる冷媒が他の流路２３ｂ〜２３ｄに流入することを防止し、端子部８側の蓄電池６を集中して冷却することができる。   Since the adjacent flow paths 23a to 23d are formed by being partitioned by the partition portion 22, the refrigerant flowing through the flow path 23a having a short distance from the terminal portion 8 is prevented from flowing into the other flow paths 23b to 23d, The storage battery 6 on the terminal 8 side can be concentrated and cooled.

端子部８が多く、発熱量が多い組電池においても、端子部８側を冷媒によって集中して冷却することができる。   Even in an assembled battery with many terminal portions 8 and a large amount of heat generation, the terminal portion 8 side can be concentrated and cooled by the refrigerant.

次に本発明の第２実施形態について図６〜図８を用いて説明する。   Next, a second embodiment of the present invention will be described with reference to FIGS.

図６は、本実施形態における単電池７の端子部８の位置を示す図である。図７は本実施形態の冷却装置１の上面図である。図８は図７のVIII−VIII断面図である。   FIG. 6 is a diagram showing the position of the terminal portion 8 of the unit cell 7 in the present embodiment. FIG. 7 is a top view of the cooling device 1 of the present embodiment. 8 is a cross-sectional view taken along the line VIII-VIII in FIG.

本実施形態では、端子部８が単電池７の上面７ｃに形成され、端子部８の位置に合わせて、第１供給孔２４、第２供給孔３１、第１排出孔２５、第２排出孔４１の位置が第１実施形態に比較して変更されている。   In the present embodiment, the terminal portion 8 is formed on the upper surface 7 c of the unit cell 7, and the first supply hole 24, the second supply hole 31, the first discharge hole 25, and the second discharge hole are aligned with the position of the terminal portion 8. The position 41 is changed compared to the first embodiment.

端子部８が単電池７の上面７ｃの中央付近に設けられると、中央側に形成された流路２３ｂ、２３ｃに冷媒が多く流れるように第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１が形成される。具体的には、流路２３ｂと流路２３ｃとの間に形成された仕切部２２の延長上に第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１が形成される。なお、流路２３ｂ、２３ｃの延長上に第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１をそれぞれ形成してもよい。   When the terminal portion 8 is provided in the vicinity of the center of the upper surface 7c of the unit cell 7, the first supply hole 24, the second supply hole 31, and the first supply hole 24 are formed so that a large amount of refrigerant flows through the flow paths 23b and 23c formed on the center side. A discharge hole 25 and a second discharge hole 41 are formed. Specifically, the first supply hole 24, the second supply hole 31, the first discharge hole 25, and the second discharge hole 41 on the extension of the partition portion 22 formed between the flow path 23 b and the flow path 23 c. Is formed. In addition, you may form the 1st supply hole 24, the 2nd supply hole 31, the 1st discharge hole 25, and the 2nd discharge hole 41 on the extension of the flow paths 23b and 23c, respectively.

本実施形態の効果について説明する。   The effect of this embodiment will be described.

単電池７の端子部８が単電池７の上面７ｃの中央付近に設けられた場合には、端子部８の位置に合わせて、第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１を形成することで、端子部８からの距離が短い流路２３ｂ、２３ｃにおける冷媒の流速を高くすることができ、第１実施形態と同様に端子部８付近を集中して冷却し、端子部８付近の蓄電池６の温度が高くなることを抑制することができる。   When the terminal portion 8 of the unit cell 7 is provided near the center of the upper surface 7 c of the unit cell 7, the first supply hole 24, the second supply hole 31, and the first discharge hole are aligned with the position of the terminal unit 8. 25 and the second discharge hole 41 can increase the flow rate of the refrigerant in the flow paths 23b and 23c having a short distance from the terminal portion 8, and the vicinity of the terminal portion 8 can be formed as in the first embodiment. Concentrating and cooling can suppress the temperature of the storage battery 6 in the vicinity of the terminal portion 8 from increasing.

次に本発明の第３実施形態について図９〜図１１を用いて説明する。   Next, a third embodiment of the present invention will be described with reference to FIGS.

図９は、本実施形態における単電池７の端子部８の位置を示す図である。図１０は、本実施形態の冷却装置１の上面図である。図１１は、図１０のXI−XI断面図である。   FIG. 9 is a diagram showing the positions of the terminal portions 8 of the unit cells 7 in the present embodiment. FIG. 10 is a top view of the cooling device 1 of the present embodiment. 11 is a cross-sectional view taken along the line XI-XI in FIG.

本実施形態では、端子部８が単電池７の側面７ｂ、７ｄにそれぞれ１つ形成された単電池７であり、端子部８の位置に合わせて、第１供給孔２４、及び第２供給孔３１の数、第１排出孔２５、及び第２排出孔４１の位置が第１実施形態に比較して変更されている。   In the present embodiment, each of the terminal portions 8 is a single cell 7 formed on each of the side surfaces 7 b and 7 d of the single cell 7, and the first supply hole 24 and the second supply hole are aligned with the position of the terminal portion 8. The number of 31, the position of the 1st discharge hole 25, and the 2nd discharge hole 41 is changed compared with 1st Embodiment.

端子部８が単電池７の側面７ｂ、７ｄにそれぞれ１つ形成されると、両端側に形成された流路２３ａ、２３ｄにおける冷媒の流速が高くなるように第１供給孔２４、第２供給孔３１、第１排出孔２５、第２排出孔４１が形成される。具体的には、流路２３ａの延長上、及び流路２３ｄの延長上に第１供給孔２４、及び第２供給孔３１がそれぞれ１つ形成され、流路２３ｂと流路２３ｃとの間に形成された仕切部２２の延長上に第１排出孔２５、及び第２排出孔４１が形成される。なお、流路２３ｂの延長上、及び流路２３ｃの延長上に第１排出孔２５、及び第２排出孔４１がそれぞれ１つ形成されてもよい。   When one terminal portion 8 is formed on each of the side surfaces 7b and 7d of the unit cell 7, the first supply hole 24 and the second supply are provided so that the flow rate of the refrigerant in the flow paths 23a and 23d formed on both ends is increased. A hole 31, a first discharge hole 25, and a second discharge hole 41 are formed. Specifically, one first supply hole 24 and one second supply hole 31 are formed on the extension of the flow path 23a and on the extension of the flow path 23d, respectively, and between the flow paths 23b and 23c. A first discharge hole 25 and a second discharge hole 41 are formed on the extension of the formed partition portion 22. One first discharge hole 25 and one second discharge hole 41 may be formed on the extension of the flow path 23b and on the extension of the flow path 23c.

本実施形態の効果について説明する。   The effect of this embodiment will be described.

単電池７の端子部８が単電池７の側面７ｂ、７ｄに１つ設けられた場合には、端子部８の位置に合わせて、第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１を形成することで、端子部８からの距離が短い流路２３ａ、２３ｄにおける冷媒の流速を高くすることができ、第１実施形態と同様に端子部８付近を集中して冷却し、端子部８付近の蓄電池６の温度が高くなることを抑制することができる。   When one terminal portion 8 of the unit cell 7 is provided on the side surfaces 7 b and 7 d of the unit cell 7, the first supply hole 24, the second supply hole 31, and the first discharge are arranged in accordance with the position of the terminal unit 8. By forming the hole 25 and the second discharge hole 41, the flow rate of the refrigerant in the flow paths 23a and 23d having a short distance from the terminal portion 8 can be increased, and the vicinity of the terminal portion 8 is the same as in the first embodiment. The temperature of the storage battery 6 in the vicinity of the terminal portion 8 can be suppressed from being increased.

以上、本発明の実施形態について説明したが、上記実施形態は本発明の適用例の一部を示したに過ぎず、本発明の技術的範囲を上記実施形態の具体的構成に限定する趣旨ではない。   The embodiment of the present invention has been described above. However, the above embodiment only shows a part of application examples of the present invention, and the technical scope of the present invention is limited to the specific configuration of the above embodiment. Absent.

なお、第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１を図１２に示すように流路２３ａ〜２３ｄの延長上にそれぞれ設け、各孔の大きさを変更して端子部８からの距離が短い流路における冷媒の流速が高くなるようにしてもよい。例えば第１実施形態と同じ位置に蓄電池６の端子部８が設けられている場合には、図１２に示すように流路２３ａ側になるにつれて第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１が大きくなる。このように、複数の第１供給孔２４、第２供給孔３１、第１排出孔２５、及び第２排出孔４１を設けた場合でも、孔の大きさを変更することで、本実施形態の効果を得ることができる。   In addition, the 1st supply hole 24, the 2nd supply hole 31, the 1st discharge hole 25, and the 2nd discharge hole 41 are each provided on the extension of the flow paths 23a-23d, as shown in FIG. May be changed so that the flow rate of the refrigerant in the flow path having a short distance from the terminal portion 8 is increased. For example, when the terminal portion 8 of the storage battery 6 is provided at the same position as in the first embodiment, as shown in FIG. 12, the first supply hole 24, the second supply hole 31, the first The 1 discharge hole 25 and the 2nd discharge hole 41 become large. Thus, even when the plurality of first supply holes 24, the second supply holes 31, the first discharge holes 25, and the second discharge holes 41 are provided, by changing the size of the holes, An effect can be obtained.

１ 冷却装置
２ 冷却部
３ 供給部
４ 排出部
６ 蓄電池
７ 端子部
２２ 仕切部
２３ａ 流路
２３ｂ 流路
２３ｃ 流路
２３ｄ 流路
３０ 第１扁平部（接合部）
３１ 第２供給孔（供給孔）
４０ 第２扁平部（接合部）
４１ 第２排出孔（排出孔） DESCRIPTION OF SYMBOLS 1 Cooling device 2 Cooling part 3 Supply part 4 Discharge part 6 Storage battery 7 Terminal part 22 Partition part 23a Channel 23b Channel 23c Channel 23d Channel 30 1st flat part (joint part)
31 Second supply hole (supply hole)
40 Second flat part (joint part)
41 Second discharge hole (discharge hole)

Claims (8)

蓄電池が載置されて、当該蓄電池を冷却する蓄電池の冷却装置であって、
前記蓄電池の下部壁面に沿って延設され、内部に冷媒が流れる流路が並列して形成され、前記下部壁面側から前記蓄電池を冷却する冷却部と、
前記流路の並列方向に沿って延設され、前記下部壁面と直交する方向に沿って前記冷却部に前記冷媒を供給する供給部とを備え、
前記冷却部には、前記蓄電池の端子部からの距離が短い箇所に設けた第１流路おける前記冷媒の流速が、前記端子部からの距離が長い箇所に設けた第２流路における前記冷媒の流速よりも高くなるように供給孔が形成されることを特徴とする蓄電池の冷却装置。 A storage battery cooling device in which a storage battery is placed and cools the storage battery,
A cooling section that extends along the lower wall surface of the storage battery and in which a flow path through which a refrigerant flows is formed in parallel, and cools the storage battery from the lower wall surface side;
A supply section that extends along the parallel direction of the flow paths and supplies the refrigerant to the cooling section along a direction orthogonal to the lower wall surface;
In the cooling section, the refrigerant in the second flow path provided at a location where the flow rate of the refrigerant in the first flow path provided at a short distance from the terminal portion of the storage battery is provided at a location where the distance from the terminal portion is long. A cooling device for a storage battery, wherein the supply hole is formed so as to be higher than the flow velocity of the battery. 請求項１に記載の蓄電池の冷却装置であって、
前記供給孔は、前記第１流路の延長上に形成されることを特徴とする蓄電池の冷却装置。 It is a cooling device of the storage battery according to claim 1,
The cooling device for a storage battery, wherein the supply hole is formed on an extension of the first flow path. 請求項１または２に記載の蓄電池の冷却装置であって、
前記冷却部には、前記第１流路の延長上に前記冷却部から前記冷媒を排出する排出孔が形成されることを特徴とする蓄電池の冷却装置。 A cooling device for a storage battery according to claim 1 or 2,
A cooling device for a storage battery, wherein a discharge hole for discharging the refrigerant from the cooling unit is formed in the cooling unit on an extension of the first flow path. 請求項１から３のいずれか一つに記載の蓄電池の冷却装置であって、
前記流路の並列方向に沿って延設された排出部を備え、
前記供給部、及び前記排出部は、前記下部壁面の面方向と直交する方向の長さが前記冷却部の長手方向の長さよりも短く、前記冷却部に接合する接合部を備えることを特徴とする蓄電池の冷却装置。 A cooling device for a storage battery according to any one of claims 1 to 3,
A discharge portion extending along the parallel direction of the flow paths,
The supply unit and the discharge unit include a joint portion that is shorter in a length direction perpendicular to a surface direction of the lower wall surface than a length in a longitudinal direction of the cooling unit and is joined to the cooling unit. A storage battery cooling device. 請求項１から４のいずれか一つに記載の蓄電池の冷却装置であって、
前記冷却部には前記供給孔が複数形成され、
前記供給孔は、前記端子部からの距離が短くなるほど大きくなることを特徴とする蓄電池の冷却装置。 The storage battery cooling device according to any one of claims 1 to 4,
A plurality of the supply holes are formed in the cooling unit,
The cooling device for a storage battery, wherein the supply hole becomes larger as the distance from the terminal portion becomes shorter. 請求項５に記載の蓄電池の冷却装置であって、
前記冷却部には前記冷却部から前記冷媒を排出する排出孔が複数形成され、
前記排出孔は、前記端子部からの距離が短くなるほど大きくなることを特徴とする蓄電池の冷却装置。 The storage battery cooling device according to claim 5,
A plurality of discharge holes for discharging the refrigerant from the cooling unit are formed in the cooling unit,
The cooling device for a storage battery, wherein the discharge hole becomes larger as a distance from the terminal portion becomes shorter. 請求項１から６のいずれか一つに記載の蓄電池の冷却装置であって、
隣接する流路は、仕切部によって仕切られることを特徴とする蓄電池の冷却装置。 A cooling device for a storage battery according to any one of claims 1 to 6,
A cooling device for a storage battery, wherein adjacent channels are partitioned by a partitioning portion. 請求項１から７のいずれか一つに記載の蓄電池の冷却装置であって、
前記蓄電池は組電池であることを特徴とする蓄電池の冷却装置。
A storage battery cooling device according to any one of claims 1 to 7,
The storage battery cooling device, wherein the storage battery is an assembled battery.
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