JP5678863B2 - Secondary battery, secondary battery temperature control device and vehicle - Google Patents

Secondary battery, secondary battery temperature control device and vehicle Download PDF

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JP5678863B2
JP5678863B2 JP2011230142A JP2011230142A JP5678863B2 JP 5678863 B2 JP5678863 B2 JP 5678863B2 JP 2011230142 A JP2011230142 A JP 2011230142A JP 2011230142 A JP2011230142 A JP 2011230142A JP 5678863 B2 JP5678863 B2 JP 5678863B2
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temperature
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JP2013089511A (en
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貴久 杉本
貴久 杉本
木下　恭一
恭一 木下
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Toyota Industries 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
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Description

本発明は、二次電池、二次電池の温調装置および車両に関するものである。   The present invention relates to a secondary battery, a temperature control device for a secondary battery, and a vehicle.

特許文献１において蓄電装置の冷却構造が開示されており、複数の蓄電素子を積層した蓄電モジュールと、蓄電素子間に形成される第１の冷媒通路と、蓄電モジュールの外部に設けられ、蓄電モジュールの外面のうち蓄電素子の端子が位置する側の第１の外面に沿って形成される第２の冷媒通路と、を有する。   Patent Document 1 discloses a cooling structure for a power storage device, in which a power storage module in which a plurality of power storage elements are stacked, a first refrigerant passage formed between the power storage elements, and a power storage module provided outside the power storage module. And a second refrigerant passage formed along the first outer surface on the side where the terminals of the storage element are located.

特開２００９−２５２４７３号公報JP 2009-252473 A

ところで、効率よく温調するとともに、よりコンパクトな構造という観点から改良が望まれている。
本発明の目的は、省スペース化を図るとともに効率的な温調を実現することができる二次電池、二次電池の温調装置および車両を提供することにある。 By the way, improvement is desired from the viewpoint of efficient temperature control and a more compact structure.
An object of the present invention is to provide a secondary battery, a secondary battery temperature control device, and a vehicle that can achieve space-saving and efficient temperature control.

請求項１に記載の発明では、複数の電池セルを並設して構成した電池モジュールと、前記電池セルの隣接方向に沿って延び、前記電池セルから突出する端子に連結されかつ隣接する前記電池セルの前記端子同士を電気的に接続する第１列セル間接続用導電部材群および第２列セル間接続用導電部材群と、前記第１列セル間接続用導電部材群の周囲を囲む態様でかつ前記第１列セル間接続用導電部材群の延設方向に配置される第１の流路形成部材と、前記第２列セル間接続用導電部材群の周囲を囲む態様でかつ前記第２列セル間接続用導電部材群の延設方向に配置される第２の流路形成部材と、を有し、前記第１列セル間接続用導電部材群および前記第２列セル間接続用導電部材群は、前記電池セルの並設される方向にそれぞれ対応して並設され、前記第１列セル間接続用導電部材群は１以上の第１列セル間接続用導電部材を有し、前記第２列セル間接続用導電部材群は１以上の第２列セル間接続用導電部材を有し、前記第１の流路形成部材および前記第２の流路形成部材は、温調用流体が通過可能であることを要旨とする。   In the invention according to claim 1, the battery module configured by arranging a plurality of battery cells, and the battery connected to and adjacent to a terminal extending along an adjacent direction of the battery cell and protruding from the battery cell A first row inter-cell connecting conductive member group and a second row inter-cell connecting conductive member group that electrically connect the terminals of the cells, and an aspect surrounding the first row inter-cell connecting conductive member group And a first flow path forming member arranged in the extending direction of the first row-cell connecting conductive member group, and an aspect surrounding the second row-cell connecting conductive member group A second flow path forming member disposed in the extending direction of the conductive member group for connecting two-row cells, and for connecting the first row-cell connecting conductive member group and the second row-cell connecting member Conductive member groups are juxtaposed corresponding to the direction in which the battery cells are juxtaposed. The first row cell connection conductive member group includes one or more first row cell connection conductive members, and the second row cell connection conductive member group includes one or more second row cell connection. The first flow path forming member and the second flow path forming member have an electrical conductive member, and the gist thereof is that a temperature adjusting fluid can pass therethrough.

なお、電気的に接続するとは端子同士を直列接続する場合および並列接続する場合の両方を指す。
請求項１に記載の発明によれば、第１列セル間接続用導電部材群および第２列セル間接続用導電部材群は、電池セルの隣接方向に沿って延び、電池セルから突出する端子に連結されかつ隣接する電池セルの端子同士を電気的に接続している。第１列セル間接続用導電部材群および第２列セル間接続用導電部材群は、電池セルの並設される方向にそれぞれ対応して並設され、第１列セル間接続用導電部材群は１以上の第１列セル間接続用導電部材を有し、第２列セル間接続用導電部材群は１以上の第２列セル間接続用導電部材を有している。第１の流路形成部材は、第１列セル間接続用導電部材群の周囲を囲む態様でかつ第１列セル間接続用導電部材群の延設方向に配置されている。第２の流路形成部材は、第２列セル間接続用導電部材群の周囲を囲む態様でかつ第２列セル間接続用導電部材群の延設方向に配置されている。そして、第１の流路形成部材および第２の流路形成部材には温調用流体が通過する。この温調用流体により第１列セル間接続用導電部材が温調され、第１列セル間接続用導電部材の温調により電池セルの端子を通して電池セルが温調される。また、温調用流体により第２列セル間接続用導電部材が温調され、第２列セル間接続用導電部材の温調により電池セルの端子を通して電池セルが温調される。 Note that the term “electrically connected” refers to both the case where terminals are connected in series and the case where they are connected in parallel.
According to the first aspect of the present invention, the first row inter-cell connecting conductive member group and the second row inter-cell connecting conductive member group extend along the adjacent direction of the battery cell and project from the battery cell. And terminals of adjacent battery cells are electrically connected to each other. The first row inter-cell connecting conductive member group and the second row inter-cell connecting conductive member group are juxtaposed corresponding to the direction in which the battery cells are juxtaposed, and the first row inter-cell connecting conductive member group. Has one or more first row cell connecting conductive members, and the second row cell connecting conductive member group has one or more second row cell connecting conductive members. The first flow path forming member is disposed in the extending direction of the first row-cell connecting conductive member group so as to surround the first row-cell connecting conductive member group. The second flow path forming member is disposed in the extending direction of the second row inter-cell connecting conductive member group so as to surround the second row inter-cell connecting conductive member group. The temperature adjusting fluid passes through the first flow path forming member and the second flow path forming member. The temperature adjusting fluid adjusts the temperature of the first row cell connecting conductive member, and the temperature of the first row cell connecting conductive member adjusts the temperature of the battery cell through the terminal of the battery cell. Further, the second row inter-cell connecting conductive member is temperature-controlled by the temperature adjusting fluid, and the temperature of the second row inter-cell connecting conductive member is adjusted through the terminals of the battery cells.

このようにして、第１列セル間接続用導電部材に対しては第１の流路形成部材を、また、第２列セル間接続用導電部材に対しては第２の流路形成部材を配する構成とすることにより省スペース化を図ることができる。さらに、第１の流路形成部材を用いて第１列セル間接続用導電部材を、また、第２の流路形成部材を用いて第２列セル間接続用導電部材を、それぞれ集中的に温調でき、効率的な温調を実現することができる。   In this way, the first flow path forming member is provided for the first row inter-cell connecting conductive member, and the second flow path forming member is provided for the second row inter-cell connecting conductive member. Space-saving can be achieved by adopting the arrangement. Further, the first flow path forming member is used to concentrate the first row cell connecting conductive member, and the second flow path forming member is used to concentrate the second row cell connecting conductive member. Temperature can be controlled and efficient temperature control can be realized.

請求項２に記載の発明では、請求項１に記載の二次電池において、前記第１列セル間接続用導電部材および前記第２列セル間接続用導電部材は、複数であり、前記第１の流路形成部材、前記第２の流路形成部材および前記温調用流体は、電気絶縁性を有することを要旨とする。   According to a second aspect of the present invention, in the secondary battery according to the first aspect, the first inter-row cell connecting conductive member and the second inter-row cell connecting conductive member include a plurality of the first row inter-cell connecting conductive members. The flow path forming member, the second flow path forming member, and the temperature adjusting fluid have electrical insulation.

請求項２に記載の発明によれば、第１列セル間接続用導電部材および第２列セル間接続用導電部材が、複数であっても、第１の流路形成部材、第２の流路形成部材および温調用流体は、電気絶縁性を有するので、セル間接続用導電部材間がショートすることがない。   According to the second aspect of the present invention, even if there are a plurality of first row cell connecting conductive members and second row cell connecting conductive members, the first flow path forming member and the second flow connecting member are provided. Since the path forming member and the temperature adjusting fluid have electrical insulation properties, there is no short circuit between the inter-cell connecting conductive members.

請求項３に記載の発明では、請求項１または２に記載の二次電池と、前記電池セルの温度を検出する温度検出手段と、前記第１の流路形成部材の内部を通過させる前記温調用流体である第１温調用流体および前記第２の流路形成部材の内部を通過させる前記温調用流体である第２温調用流体の温度を調整するための流体温度調整手段と、前記温度検出手段により検出した前記電池セルの温度に基づいて前記流体温度調整手段を制御して、前記第１温調用流体および前記第２温調用流体の温度を制御する制御手段と、を備えたことを要旨とする。   According to a third aspect of the present invention, the secondary battery according to the first or second aspect, temperature detecting means for detecting the temperature of the battery cell, and the temperature passing through the inside of the first flow path forming member. Fluid temperature adjusting means for adjusting the temperature of the first temperature adjusting fluid that is the adjusting fluid and the temperature of the second temperature adjusting fluid that is the temperature adjusting fluid that passes through the inside of the second flow path forming member, and the temperature detection And a control means for controlling the temperature of the first temperature adjusting fluid and the second temperature adjusting fluid by controlling the fluid temperature adjusting means based on the temperature of the battery cell detected by the means. And

請求項３に記載の発明によれば、温度検出手段により電池セルの温度が検出され、流体温度調整手段により第１の流路形成部材の内部を通過させる温調用流体である第１温調用流体および第２の流路形成部材の内部を通過させる温調用流体である第２温調用流体の温度を調整することができ、制御手段により、温度検出手段により検出した電池セルの温度に基づいて流体温度調整手段が制御されて第１温調用流体および第２温調用流体の温度が制御される。これにより、最適な温調を実行することができる。   According to the third aspect of the present invention, the temperature detecting unit detects the temperature of the battery cell, and the fluid temperature adjusting unit allows the first temperature adjusting fluid to pass through the inside of the first flow path forming member. And the temperature of the second temperature adjusting fluid, which is a temperature adjusting fluid that passes through the inside of the second flow path forming member, can be adjusted by the control means based on the temperature of the battery cell detected by the temperature detecting means. The temperature adjusting means is controlled to control the temperatures of the first temperature adjusting fluid and the second temperature adjusting fluid. Thereby, optimal temperature control can be performed.

請求項４に記載のように、請求項１または２に記載の二次電池を搭載してなる車両とすることができる。
請求項５に記載のように、請求項３に記載の二次電池の温調装置を搭載してなる車両とすることができる。 According to a fourth aspect of the present invention, a vehicle can be provided in which the secondary battery according to the first or second aspect is mounted.
As described in claim 5, the vehicle can be provided with the secondary battery temperature control device according to claim 3.

本発明によれば、省スペース化を図るとともに効率的な温調を実現することができる。   According to the present invention, space saving and efficient temperature control can be realized.

（ａ）は実施形態におけるリチウムイオン二次電池の概略平面図、（ｂ）はリチウムイオン二次電池の概略右側面図、（ｃ）は（ａ）のＡ−Ａ線での概略縦断面図。(A) is a schematic top view of the lithium ion secondary battery in embodiment, (b) is a schematic right view of a lithium ion secondary battery, (c) is a schematic longitudinal cross-sectional view in the AA line of (a). . リチウムイオン二次電池の概略一部拡大断面図。1 is a schematic partially enlarged cross-sectional view of a lithium ion secondary battery. 温調ダクトを取り外した状態でのリチウムイオン二次電池の概略平面図、（ｂ）は温調ダクトを取り外した状態でのリチウムイオン二次電池の概略右側面図、（ｃ）は（ａ）のＡ−Ａ線での概略縦断面図。A schematic plan view of the lithium ion secondary battery with the temperature control duct removed, (b) is a schematic right side view of the lithium ion secondary battery with the temperature control duct removed, and (c) is (a). The schematic longitudinal cross-sectional view in an AA line. 電気回路図。Electrical circuit diagram. 実施形態における二次電池の温調装置の全体構成図。The whole block diagram of the temperature control apparatus of the secondary battery in embodiment. （ａ）は別例のリチウムイオン二次電池の概略平面図、（ｂ）はリチウムイオン二次電池の概略右側面図、（ｃ）は（ａ）のＡ−Ａ線での概略縦断面図。(A) is a schematic plan view of another example of a lithium ion secondary battery, (b) is a schematic right side view of the lithium ion secondary battery, and (c) is a schematic longitudinal sectional view taken along line AA of (a). . 温調ダクトを取り外した状態でのリチウムイオン二次電池の概略平面図、（ｂ）は温調ダクトを取り外した状態でのリチウムイオン二次電池の概略右側面図、（ｃ）は（ａ）のＡ−Ａ線での概略縦断面図。A schematic plan view of the lithium ion secondary battery with the temperature control duct removed, (b) is a schematic right side view of the lithium ion secondary battery with the temperature control duct removed, and (c) is (a). The schematic longitudinal cross-sectional view in an AA line. 電気回路図。Electrical circuit diagram. 別例のリチウムイオン二次電池の概略一部拡大断面図。FIG. 6 is a schematic partially enlarged cross-sectional view of another example of a lithium ion secondary battery. 別例のリチウムイオン二次電池の概略平面図、（ｂ）はリチウムイオン二次電池の概略右側面図、（ｃ）は（ａ）のＡ−Ａ線での概略縦断面図。The schematic plan view of the lithium ion secondary battery of another example, (b) is a schematic right view of a lithium ion secondary battery, (c) is a schematic longitudinal cross-sectional view in the AA line of (a).

以下、本発明を、リチウムイオン二次電池に具体化した一実施形態を図１〜図５に従って説明する。
なお、図面において、水平面を、直交するＸ，Ｙ方向で規定するとともに、上下方向をＺ方向で規定している。 Hereinafter, an embodiment in which the present invention is embodied in a lithium ion secondary battery will be described with reference to FIGS.
In the drawings, the horizontal plane is defined by the orthogonal X and Y directions, and the vertical direction is defined by the Z direction.

図１，３に示すように、リチウムイオン二次電池１０は、電池モジュールＭｂと、第１列セル間接続用導電部材群Ｇｒ１（バスバー６１，６３，６５，６７）と、第２列セル間接続用導電部材群Ｇｒ２（バスバー６０，６２，６４，６６）と、第１の温調ダクト３０と、第２の温調ダクト４０とを有している。第１の流路形成部材としての第１の温調ダクト３０および第２の流路形成部材としての第２の温調ダクト４０は樹脂製であり、その内部には温調用流体としての空気が流れる。   As shown in FIGS. 1 and 3, the lithium ion secondary battery 10 includes a battery module Mb, a first row-cell connecting conductive member group Gr1 (bus bars 61, 63, 65, 67), and a second row cell. The connecting conductive member group Gr2 (bus bars 60, 62, 64, 66), the first temperature control duct 30, and the second temperature control duct 40 are provided. The first temperature control duct 30 as the first flow path forming member and the second temperature control duct 40 as the second flow path forming member are made of resin, and air as a temperature control fluid is contained therein. Flowing.

図３において、電池モジュールＭｂは、複数の電池セルＣ１〜Ｃ９を並設して構成されている。各電池セルＣ１〜Ｃ９は角型電池セルであり、電池セルＣ１〜Ｃ９の本体部２０が薄い四角箱型をなしている。本体部２０は、電槽（缶）の内部においてプレート状の正極とプレート状の負極をセパレータで巻き込んで構成されている。電池セルＣ１〜Ｃ９の本体部２０はＹ方向において並設して配置され、隣接する電池セルの本体部２０は側面が接触する状態で固定されている。   In FIG. 3, the battery module Mb is configured by arranging a plurality of battery cells C1 to C9 in parallel. Each of the battery cells C1 to C9 is a rectangular battery cell, and the main body 20 of the battery cells C1 to C9 is a thin square box. The main body 20 is configured by winding a plate-like positive electrode and a plate-like negative electrode with a separator inside a battery case (can). The main body portions 20 of the battery cells C1 to C9 are arranged side by side in the Y direction, and the main body portions 20 of adjacent battery cells are fixed in a state where the side surfaces are in contact with each other.

各電池セルＣ１〜Ｃ９は、本体部２０の上面には正極用の端子２１と負極用の端子２２が上方に突出している。両端子２１，２２は、雌ねじの端子である。図３において、電池セルＣ１は、本体部２０において左側に正極用の端子２１が配置され、右側に負極用の端子２２が配置されている。電池セルＣ２は、本体部２０において左側に負極用の端子２２が配置され、右側に正極用の端子２１が配置されている。   In each of the battery cells C <b> 1 to C <b> 9, a positive terminal 21 and a negative terminal 22 protrude upward from the upper surface of the main body 20. Both terminals 21 and 22 are female screw terminals. In FIG. 3, the battery cell C <b> 1 has a positive terminal 21 disposed on the left side and a negative terminal 22 disposed on the right side of the main body 20. The battery cell C <b> 2 has a negative electrode terminal 22 arranged on the left side and a positive electrode terminal 21 arranged on the right side in the main body 20.

以下、電池セルＣ３は本体部２０の左側に正極用の端子２１が右側に負極用の端子２２が、電池セルＣ４は本体部２０の左側に負極用の端子２２が右側に正極用の端子２１が、電池セルＣ５は本体部２０の左側に正極用の端子２１が右側に負極用の端子２２が配置されている。電池セルＣ６は本体部２０の左側に負極用の端子２２が右側に正極用の端子２１が、電池セルＣ７は本体部２０の左側に正極用の端子２１が右側に負極用の端子２２が、電池セルＣ８は本体部２０の左側に負極用の端子２２が右側に正極用の端子２１が、電池セルＣ９は本体部２０の左側に正極用の端子２１が右側に負極用の端子２２が配置されている。   Hereinafter, the battery cell C3 has a positive electrode terminal 21 on the left side of the main body portion 20 and a negative electrode terminal 22 on the right side, and the battery cell C4 has a negative electrode terminal 22 on the left side of the main body portion 20 and a positive electrode terminal 21 on the right side. However, the battery cell C5 has a positive terminal 21 on the left side of the main body 20 and a negative terminal 22 on the right side. Battery cell C6 has negative electrode terminal 22 on the left side of main body 20 and positive electrode terminal 21 on the right side, and battery cell C7 has positive electrode terminal 21 on the left side of main body part 20 and negative electrode terminal 22 on the right side. Battery cell C8 has negative electrode terminal 22 on the left side of main body 20 and positive electrode terminal 21 on the right side, and battery cell C9 has positive electrode terminal 21 on the left side of main body part 20 and negative electrode terminal 22 on the right side. Has been.

電池セルＣ１〜Ｃ９は、本体部２０の上面において台座５０（図２参照）が端子２１，２２を貫通する状態で配置されている。
バスバー６０はＹ方向に延びている。バスバー６０は隣接する電池セルＣ１，Ｃ２の端子２１，２２に締結されている。即ち、バスバー６０の一端側において電池セルＣ１の端子２１がバスバー６０を貫通するとともにバスバー６０の上側からナット５１が螺入され、ナット５１によりバスバー６０が電池セルＣ１の端子２１に締結されている。バスバー６０の他端側において電池セルＣ２の端子２２がバスバー６０を貫通するとともにバスバー６０の上側からナット５１が螺入され、ナット５１によりバスバー６０が電池セルＣ２の端子２２に締結されている。 The battery cells C <b> 1 to C <b> 9 are arranged in a state where the pedestal 50 (see FIG. 2) penetrates the terminals 21 and 22 on the upper surface of the main body 20.
The bus bar 60 extends in the Y direction. The bus bar 60 is fastened to the terminals 21 and 22 of the adjacent battery cells C1 and C2. That is, the terminal 21 of the battery cell C1 passes through the bus bar 60 on one end side of the bus bar 60 and the nut 51 is screwed from the upper side of the bus bar 60, and the bus bar 60 is fastened to the terminal 21 of the battery cell C1 by the nut 51. . The terminal 22 of the battery cell C2 penetrates the bus bar 60 on the other end side of the bus bar 60, and a nut 51 is screwed in from the upper side of the bus bar 60. The bus bar 60 is fastened to the terminal 22 of the battery cell C2 by the nut 51.

バスバー６１はＹ方向に延びている。バスバー６１は隣接する電池セルＣ２，Ｃ３の端子２１，２２に締結されている。即ち、バスバー６１の一端側において電池セルＣ２の端子２１がバスバー６１を貫通するとともにバスバー６１の上側からナット５１が螺入され、ナット５１によりバスバー６１が電池セルＣ２の端子２１に締結されている。バスバー６１の他端側において電池セルＣ３の端子２２がバスバー６１を貫通するとともにバスバー６１の上側からナット５１が螺入され、ナット５１によりバスバー６１が電池セルＣ３の端子２２に締結されている。   The bus bar 61 extends in the Y direction. The bus bar 61 is fastened to the terminals 21 and 22 of the adjacent battery cells C2 and C3. That is, the terminal 21 of the battery cell C2 passes through the bus bar 61 on one end side of the bus bar 61 and the nut 51 is screwed from the upper side of the bus bar 61, and the bus bar 61 is fastened to the terminal 21 of the battery cell C2 by the nut 51. . The terminal 22 of the battery cell C3 penetrates the bus bar 61 on the other end side of the bus bar 61, and a nut 51 is screwed from the upper side of the bus bar 61. The bus bar 61 is fastened to the terminal 22 of the battery cell C3 by the nut 51.

以下同様に、バスバー６２はＹ方向に延び、隣接する電池セルＣ３，Ｃ４の端子２１，２２に締結されている。バスバー６３はＹ方向に延び、隣接する電池セルＣ４，Ｃ５の端子２１，２２に締結されている。バスバー６４はＹ方向に延び、隣接する電池セルＣ５，Ｃ６の端子２１，２２に締結されている。バスバー６５はＹ方向に延び、隣接する電池セルＣ６，Ｃ７の端子２１，２２に締結されている。バスバー６６はＹ方向に延び、隣接する電池セルＣ７，Ｃ８の端子２１，２２に締結されている。バスバー６７はＹ方向に延び、隣接する電池セルＣ８，Ｃ９の端子２１，２２に締結されている。   Similarly, the bus bar 62 extends in the Y direction and is fastened to the terminals 21 and 22 of the adjacent battery cells C3 and C4. The bus bar 63 extends in the Y direction and is fastened to the terminals 21 and 22 of the adjacent battery cells C4 and C5. The bus bar 64 extends in the Y direction and is fastened to terminals 21 and 22 of adjacent battery cells C5 and C6. The bus bar 65 extends in the Y direction and is fastened to the terminals 21 and 22 of the adjacent battery cells C6 and C7. The bus bar 66 extends in the Y direction and is fastened to the terminals 21 and 22 of the adjacent battery cells C7 and C8. The bus bar 67 extends in the Y direction and is fastened to the terminals 21 and 22 of the adjacent battery cells C8 and C9.

このようにして、バスバー６０，６１，６２，６３，６４，６５，６６，６７により電池セル同士を電気的に接続して、図４に示すごとく、各電池セルＣ１〜Ｃ９が直列接続されている。   In this way, the battery cells are electrically connected by the bus bars 60, 61, 62, 63, 64, 65, 66, and 67, and the battery cells C1 to C9 are connected in series as shown in FIG. Yes.

ここで、バスバー６１，６３，６５，６７は一直線上に並んで設けられているとともに、バスバー６０，６２，６４，６６は一直線上に並んで設けられており、複数のバスバー６０〜６７はＸ方向に離間して２列に配置されている。即ち、２列のセル間接続用導電部材のうちの第１列セル間接続用導電部材としてのバスバー６１，６３，６５，６７は、電池セルの隣接方向（Ｙ方向）に沿って延び、電池セルから突出する端子２１，２２に連結されて隣接する電池セルの端子２１，２２同士を電気的に接続している。このようにして、第１列セル間接続用導電部材群Ｇｒ１は、１以上の第１列セル間接続用導電部材としてのバスバー６１，６３，６５，６７を有している。第１列セル間接続用導電部材群Ｇｒ１は、電池セルの隣接方向に沿って延び、電池セルから突出する端子に連結されかつ隣接する電池セルの端子同士を電気的に接続する。   Here, the bus bars 61, 63, 65, and 67 are arranged in a straight line, the bus bars 60, 62, 64, and 66 are arranged in a straight line, and the plurality of bus bars 60 to 67 are X They are arranged in two rows apart in the direction. That is, the bus bars 61, 63, 65, 67 as the first row inter-cell connecting conductive members among the two rows of inter-cell connecting conductive members extend along the adjacent direction (Y direction) of the battery cells. The terminals 21 and 22 of the adjacent battery cells are electrically connected to each other by being connected to the terminals 21 and 22 protruding from the cell. In this way, the first row-cell connecting conductive member group Gr1 has one or more bus bars 61, 63, 65, 67 as first row-cell connecting conductive members. The first row inter-cell connecting conductive member group Gr1 extends along the adjacent direction of the battery cells, is connected to the terminals protruding from the battery cells, and electrically connects the terminals of the adjacent battery cells.

また、２列のセル間接続用導電部材のうちの第２列セル間接続用導電部材としてのバスバー６０，６２，６４，６６は、電池セルの隣接方向（Ｙ方向）に沿って延び、電池セルから突出する端子２１，２２に連結されて隣接する電池セルの端子２１，２２同士を電気的に接続している。このようにして、第２列セル間接続用導電部材群Ｇｒ２は、１以上の第２列セル間接続用導電部材としてのバスバー６０，６２，６４，６６を有している。第２列セル間接続用導電部材群Ｇｒ２は、電池セルの隣接方向に沿って延び、電池セルから突出する端子に連結されかつ隣接する電池セルの端子同士を電気的に接続する。第１列セル間接続用導電部材群Ｇｒ１および第２列セル間接続用導電部材群Ｇｒ２は、電池セルの並設される方向にそれぞれ対応して並設されている。   Of the two rows of inter-cell connecting conductive members, the bus bars 60, 62, 64, 66 as the second row inter-cell connecting conductive members extend along the adjacent direction (Y direction) of the battery cells. The terminals 21 and 22 of the adjacent battery cells are electrically connected to each other by being connected to the terminals 21 and 22 protruding from the cell. In this way, the second row cell connecting conductive member group Gr2 has one or more bus bars 60, 62, 64, 66 as second row cell connecting conductive members. The second row inter-cell connecting conductive member group Gr2 extends along the adjacent direction of the battery cells, is connected to the terminals protruding from the battery cells, and electrically connects the terminals of the adjacent battery cells. The first row-cell connecting conductive member group Gr1 and the second row-cell connecting conductive member group Gr2 are arranged in parallel corresponding to the direction in which the battery cells are arranged in parallel.

図１，２に示すように、第１の温調ダクト３０はＹ方向に延びている。第１の温調ダクト３０は、一直線上に並んだバスバー６１，６３，６５，６７を覆っている。詳しくは、第１の温調ダクト３０は、断面が四角枠状をなし、下面の中央部が開口している。第１の温調ダクト３０の下面は電池セルの本体部２０の上面と接着されている。この第１の温調ダクト３０の内部には温調用流体としての空気が通過する。このように、第１の流路形成部材としての第１の温調ダクト３０は、第１列セル間接続用導電部材としてのバスバー６１，６３，６５，６７の延設方向に延び、バスバー６１，６３，６５，６７の周囲を囲み、内部に温調用流体としての空気が通過する。即ち、第１の流路形成部材としての第１の温調ダクト３０は、第１列セル間接続用導電部材群Ｇｒ１の周囲を囲む態様でかつ第１列セル間接続用導電部材群Ｇｒ１の延設方向に配置され、温調用流体が通過可能である。   As shown in FIGS. 1 and 2, the first temperature control duct 30 extends in the Y direction. The first temperature control duct 30 covers the bus bars 61, 63, 65, 67 arranged in a straight line. Specifically, the first temperature control duct 30 has a rectangular frame shape in cross section, and the center portion of the lower surface is opened. The lower surface of the first temperature control duct 30 is bonded to the upper surface of the main body 20 of the battery cell. Air as a temperature adjusting fluid passes through the inside of the first temperature adjusting duct 30. Thus, the first temperature control duct 30 as the first flow path forming member extends in the extending direction of the bus bars 61, 63, 65, 67 as the first row cell connecting conductive members, and the bus bar 61 , 63, 65, 67, and air as a temperature adjusting fluid passes through the inside. That is, the first temperature control duct 30 as the first flow path forming member has a form surrounding the first row cell connecting conductive member group Gr1 and the first row cell connecting conductive member group Gr1. It arrange | positions in the extending direction and the fluid for temperature control can pass through.

同様に、第２の温調ダクト４０はＹ方向に延びている。第２の温調ダクト４０は、一直線上に並んだバスバー６０，６２，６４，６６を覆っている。詳しくは、第２の温調ダクト４０は、断面が四角枠状をなし、下面の中央部が開口している。第２の温調ダクト４０の下面は電池セルの本体部２０の上面と接着されている。この第２の温調ダクト４０の内部には温調用流体としての空気が通過する。このように、第２の流路形成部材としての第２の温調ダクト４０は、第２列セル間接続用導電部材としてのバスバー６０，６２，６４，６６の延設方向に延び、バスバー６０，６２，６４，６６の周囲を囲み、内部に温調用流体としての空気が通過する。即ち、第２の流路形成部材としての第２の温調ダクト４０は、第２列セル間接続用導電部材群Ｇｒ２の周囲を囲む態様でかつ第２列セル間接続用導電部材群Ｇｒ２の延設方向に配置され、温調用流体が通過可能である。   Similarly, the second temperature control duct 40 extends in the Y direction. The second temperature control duct 40 covers the bus bars 60, 62, 64, 66 arranged in a straight line. Specifically, the second temperature control duct 40 has a rectangular frame shape in cross section, and the center portion of the lower surface is opened. The lower surface of the second temperature control duct 40 is bonded to the upper surface of the main body 20 of the battery cell. Air as a temperature adjusting fluid passes through the inside of the second temperature adjusting duct 40. Thus, the second temperature control duct 40 as the second flow path forming member extends in the extending direction of the bus bars 60, 62, 64, 66 as the second row inter-cell connection conductive member, and the bus bar 60 , 62, 64, 66 are surrounded, and air as a temperature adjusting fluid passes through the inside. That is, the second temperature control duct 40 as the second flow path forming member has a form surrounding the second row cell connecting conductive member group Gr2 and the second row cell connecting conductive member group Gr2. It arrange | positions in the extending direction and the fluid for temperature control can pass through.

図５に示すように、二次電池の温調装置６９は、リチウムイオン二次電池１０と、ファン７０と、空気温度調整装置７１と、コントローラ７２と、温度センサ７３を備えている。   As shown in FIG. 5, the secondary battery temperature adjustment device 69 includes a lithium ion secondary battery 10, a fan 70, an air temperature adjustment device 71, a controller 72, and a temperature sensor 73.

空気循環系として、ファン７０と空気温度調整装置７１とがダクトで接続され、空気温度調整装置７１と第１の温調ダクト３０、および、空気温度調整装置７１と第２の温調ダクト４０とがダクトで接続され、第１の温調ダクト３０とファン７０、および、第２の温調ダクト４０とファン７０とがダクトで接続されている。   As an air circulation system, a fan 70 and an air temperature adjusting device 71 are connected by a duct, and the air temperature adjusting device 71 and the first temperature adjusting duct 30, and the air temperature adjusting device 71 and the second temperature adjusting duct 40 are connected. Are connected by a duct, and the first temperature control duct 30 and the fan 70, and the second temperature control duct 40 and the fan 70 are connected by a duct.

ファン７０はコントローラ７２により駆動される。ファン７０の駆動に伴い空気を、空気温度調整装置７１を通して温調ダクト３０，４０に供給することができる。温調ダクト３０，４０を通過した空気はファン７０に戻されるようになっている。   The fan 70 is driven by the controller 72. As the fan 70 is driven, air can be supplied to the temperature control ducts 30 and 40 through the air temperature adjusting device 71. The air that has passed through the temperature control ducts 30 and 40 is returned to the fan 70.

空気温度調整装置７１の内部にはペルチェモジュール７１ａが配置されている。ペルチェモジュール７１ａは、ペルチェ素子と、ペルチェ素子と熱的に結合した熱交換部材からなる。そして、空気温度調整装置７１を通過する空気が、ペルチェモジュール７１ａの熱交換部材と熱交換される。詳しくは、ペルチェモジュール７１ａのペルチェ素子に対し第１の通電方向に電流を流すことにより熱交換部材が吸熱部材となって空気を冷却することができる。また、ペルチェ素子に対し第１の通電方向とは逆の第２の通電方向に電流を流すことにより熱交換部材が発熱部材となって空気を加熱することができる。   A Peltier module 71 a is arranged inside the air temperature adjusting device 71. The Peltier module 71a includes a Peltier element and a heat exchange member that is thermally coupled to the Peltier element. And the air which passes the air temperature adjustment apparatus 71 is heat-exchanged with the heat exchange member of the Peltier module 71a. Specifically, when a current flows in the first energization direction with respect to the Peltier element of the Peltier module 71a, the heat exchange member becomes a heat absorption member, and air can be cooled. In addition, when a current is supplied to the Peltier element in a second energization direction opposite to the first energization direction, the heat exchange member becomes a heat generating member and heats the air.

電池セルの本体部２０には温度センサ７３が取り付けられており、温度センサ７３により電池セルの本体部２０の温度が検出される。コントローラ７２は温度センサ７３による電池セルの本体部２０の温度を取り込んで、電池セルの本体部２０の温度に基づいてペルチェモジュール７１ａのペルチェ素子の通電電流の向きとその大きさを制御する。   A temperature sensor 73 is attached to the battery cell body 20, and the temperature sensor 73 detects the temperature of the battery cell body 20. The controller 72 takes in the temperature of the battery cell main body 20 by the temperature sensor 73 and controls the direction and magnitude of the energization current of the Peltier element of the Peltier module 71 a based on the temperature of the battery cell main body 20.

本実施形態の二次電池の温調装置６９（リチウムイオン二次電池１０）は、車両（自動車）に搭載される。リチウムイオン二次電池１０にはインバータ等を介して走行モータが接続され、リチウムイオン二次電池１０の電力により走行モータを駆動させることができるようになっている。また、リチウムイオン二次電池１０には充電器に接続され、充電器によりリチウムイオン二次電池１０を充電することができるようになっている。   The secondary battery temperature control device 69 (lithium ion secondary battery 10) of the present embodiment is mounted on a vehicle (automobile). A travel motor is connected to the lithium ion secondary battery 10 via an inverter or the like so that the travel motor can be driven by the power of the lithium ion secondary battery 10. The lithium ion secondary battery 10 is connected to a charger, and the lithium ion secondary battery 10 can be charged by the charger.

次に、このように構成したリチウムイオン二次電池１０の作用を説明する。
高負荷となると電池温度が上昇する。また、急速充電時においても電池温度が上昇する。温度センサ７３により電池セルの本体部２０の温度が検出され、コントローラ７２は温度センサ７３による電池セルの本体部２０の温度を取り込んでペルチェモジュール７１ａのペルチェ素子を制御して空気温度調整装置７１を通過する空気の温度を下げる。冷却された空気が温調ダクト３０，４０の内部を通過する。これにより、バスバー６０，６１，６２，６３，６４，６５，６６，６７が冷却される。これに伴い正極用の端子２１、および、負極用の端子２２が冷却される。その結果、電池温度が下がる。 Next, the operation of the lithium ion secondary battery 10 configured as described above will be described.
The battery temperature rises when the load is high. Further, the battery temperature rises even during rapid charging. The temperature sensor 73 detects the temperature of the battery cell body 20, and the controller 72 takes in the temperature of the battery cell body 20 by the temperature sensor 73 and controls the Peltier element of the Peltier module 71 a to control the air temperature adjustment device 71. Reduce the temperature of the passing air. The cooled air passes through the inside of the temperature control ducts 30 and 40. Thereby, bus bar 60, 61, 62, 63, 64, 65, 66, 67 is cooled. Along with this, the positive electrode terminal 21 and the negative electrode terminal 22 are cooled. As a result, the battery temperature decreases.

一方、寒冷地において電池温度が低温になる。温度センサ７３により電池セルの本体部２０の温度が検出され、コントローラ７２は温度センサ７３による電池セルの本体部２０の温度を取り込んでペルチェモジュール７１ａのペルチェ素子を制御して空気温度調整装置７１を通過する空気の温度を上げる。昇温された空気が温調ダクト３０，４０の内部を通過する。これにより、バスバー６０，６１，６２，６３，６４，６５，６６，６７が昇温される。これに伴い正極用の端子２１、および、負極用の端子２２が昇温される。その結果、電池温度が上昇する。   On the other hand, the battery temperature becomes low in a cold region. The temperature sensor 73 detects the temperature of the battery cell body 20, and the controller 72 takes in the temperature of the battery cell body 20 by the temperature sensor 73 and controls the Peltier element of the Peltier module 71 a to control the air temperature adjustment device 71. Increase the temperature of the passing air. The heated air passes through the inside of the temperature control ducts 30 and 40. Thereby, the bus bars 60, 61, 62, 63, 64, 65, 66, and 67 are heated. Accordingly, the temperature of the positive electrode terminal 21 and the negative electrode terminal 22 is increased. As a result, the battery temperature rises.

このようにして、第１の温調ダクト３０内を流れる空気により第１列のバスバー６１，６３，６５，６７が温調され、第１列のバスバー６１，６３，６５，６７の温調により電池セルの端子２１，２２を通して電池セルＣ１〜Ｃ９が温調される。また、第２の温調ダクト４０内を流れる空気により第２列のバスバー６０，６２，６４，６６が温調され、第２列のバスバー６０，６２，６４，６６の温調により電池セルの端子２１，２２を通して電池セルＣ１〜Ｃ９が温調される。このとき、第１列セル間接続用導電部材（バスバー６１，６３，６５，６７）に対しては第１の温調ダクト３０を、また、第２列セル間接続用導電部材（バスバー６０，６２，６４，６６）に対しては第２の温調ダクト４０を配する構成とすることにより省スペース化が図られる。さらに、第１の温調ダクト３０を用いて第１列セル間接続用導電部材（バスバー６１，６３，６５，６７）を、また、第２の温調ダクト４０を用いて第２列セル間接続用導電部材（バスバー６０，６２，６４，６６）を、それぞれ集中的に温調でき、効率的な温調が行われる。   In this way, the temperature of the first row bus bars 61, 63, 65, 67 is adjusted by the air flowing through the first temperature adjustment duct 30, and the temperature adjustment of the first row bus bars 61, 63, 65, 67 is performed. The battery cells C1 to C9 are temperature-controlled through the battery cell terminals 21 and 22. Further, the temperature of the second row bus bars 60, 62, 64, 66 is controlled by the air flowing through the second temperature control duct 40, and the temperature of the second row bus bars 60, 62, 64, 66 is used to control the battery cells. The battery cells C1 to C9 are temperature-controlled through the terminals 21 and 22. At this time, the first temperature control duct 30 is used for the first row-cell connecting conductive member (bus bars 61, 63, 65, 67), and the second row-cell connecting conductive member (bus bar 60, 62, 64, 66), a space can be saved by adopting a configuration in which the second temperature control duct 40 is arranged. Further, the first row-cell connecting conductive member (bus bars 61, 63, 65, 67) is used by using the first temperature control duct 30, and the second row-cell is used by using the second temperature control duct 40. The connecting conductive members (bus bars 60, 62, 64, 66) can be temperature-controlled in an intensive manner, and efficient temperature control is performed.

上記実施形態によれば、以下のような効果を得ることができる。
（１）リチウムイオン二次電池の構成として、第１の温調ダクト３０は、バスバー６１，６３，６５，６７の延設方向に延び、バスバー６１，６３，６５，６７の周囲を囲み、内部に温調用流体としての空気が通過する。また、第２の温調ダクト４０は、バスバー６０，６２，６４，６６の延設方向に延び、バスバー６０，６２，６４，６６の周囲を囲み、内部に温調用流体としての空気が通過する。よって、バスバー６０，６１，６２，６３，６４，６５，６６，６７（電池セルの端子２１，２２）を直接温調する。これにより、電気伝導性がよいと共に熱伝導性のよいバスバー６０，６１，６２，６３，６４，６５，６６，６７（熱伝導性がよいと共に熱伝導性のよい端子２１，２２）が発熱等するが、効率的に温調することができる。 According to the above embodiment, the following effects can be obtained.
(1) As a configuration of the lithium ion secondary battery, the first temperature adjustment duct 30 extends in the extending direction of the bus bars 61, 63, 65, 67, surrounds the bus bars 61, 63, 65, 67, and Air as a fluid for temperature adjustment passes through. The second temperature control duct 40 extends in the extending direction of the bus bars 60, 62, 64, 66, surrounds the bus bars 60, 62, 64, 66, and air as a temperature control fluid passes therethrough. . Therefore, the temperature of the bus bars 60, 61, 62, 63, 64, 65, 66, 67 (battery cell terminals 21, 22) is directly controlled. As a result, the bus bars 60, 61, 62, 63, 64, 65, 66, 67 having good electrical conductivity and good thermal conductivity (terminals 21, 22 having good thermal conductivity and good thermal conductivity) generate heat and the like. However, the temperature can be controlled efficiently.

詳しくは、大型電池は、車載時のハンドリングのしやすさと安全性のため電槽（缶）自身は活物質から絶縁されており、そのため最大面積の側面からの冷却しかできず、熱伝導が悪く温調の効率が低い。また、正負の電極間にはセパレータがあり、熱伝導が悪く、電池セルの内部温調の効率が悪い。   Specifically, for large batteries, the battery case (can) itself is insulated from the active material for ease of handling and safety when mounted on the vehicle, so it can only be cooled from the side of the maximum area, and heat conduction is poor. Low temperature control efficiency. Moreover, there is a separator between the positive and negative electrodes, the heat conduction is poor, and the efficiency of the internal temperature control of the battery cell is poor.

これに対し本実施形態では、バスバー６０，６１，６２，６３，６４，６５，６６，６７（電池セルの端子２１，２２）を直接温調することにより、効率的に温調が可能となる。また、省スペース化を図ることができる。   On the other hand, in this embodiment, the temperature can be efficiently controlled by directly adjusting the temperature of the bus bars 60, 61, 62, 63, 64, 65, 66, 67 (battery cell terminals 21, 22). . Moreover, space saving can be achieved.

（２）流路形成部材としての温調ダクト３０，４０が端子２１，２２のカバーとして機能する。
（３）第１列セル間接続用導電部材（バスバー６１，６３，６５，６７）および第２列セル間接続用導電部材（バスバー６０，６２，６４，６６）は、複数である。また、第１の温調ダクト３０、第２の温調ダクト４０、および、温調用流体である空気（第１の温調ダクト３０の内部を通過する空気、第２の温調ダクト４０の内部を通過する空気）は、電気絶縁性を有する。これにより、図３のバスバー６０，６２間、および、バスバー６２，６４間、バスバー６４，６６間がショートすることがない。同様に、図３のバスバー６１，６３間、および、バスバー６３，６５間、バスバー６５，６７間がショートすることがない。 (2) The temperature control ducts 30 and 40 as flow path forming members function as covers for the terminals 21 and 22.
(3) There are a plurality of first row inter-cell connection conductive members (bus bars 61, 63, 65, 67) and second row inter-cell connection conductive members (bus bars 60, 62, 64, 66). The first temperature control duct 30, the second temperature control duct 40, and the air that is the temperature control fluid (air passing through the inside of the first temperature control duct 30, the inside of the second temperature control duct 40 The air passing through is electrically insulating. Thereby, there is no short circuit between the bus bars 60 and 62, between the bus bars 62 and 64, and between the bus bars 64 and 66 in FIG. Similarly, there is no short circuit between the bus bars 61 and 63, between the bus bars 63 and 65, and between the bus bars 65 and 67 in FIG.

（４）二次電池の温調装置６９の構成として、リチウムイオン二次電池１０と、温度検出手段としての温度センサ７３と、流体温度調整手段としての空気温度調整装置７１と、制御手段としてのコントローラ７２とを備えている。温度センサ７３により、電池セルの温度を検出し、空気温度調整装置７１により第１の温調ダクト３０の内部を通過させる空気および第２の温調ダクト４０の内部を通過させる空気の温度を調整することができる。即ち、空気温度調整装置７１は、第１の流路形成部材の内部を通過させる温調用流体である第１温調用流体および第２の流路形成部材の内部を通過させる温調用流体である第２温調用流体の温度を調整するためのものである。そして、コントローラ７２は、温度センサ７３により検出した電池セルの温度に基づいて空気温度調整装置７１を制御して第１の温調ダクト３０の内部を通過させる空気の温度および第２の温調ダクト４０の内部を通過させる空気の温度を制御する。即ち、コントローラ７２は、温度センサ７３により検出した電池セルの温度に基づいて空気温度調整装置７１を制御して、第１温調用流体および第２温調用流体の温度を制御する。これにより、最適な温調を実行することができる。   (4) As a configuration of the temperature control device 69 of the secondary battery, the lithium ion secondary battery 10, the temperature sensor 73 as the temperature detecting means, the air temperature adjusting device 71 as the fluid temperature adjusting means, and the control means And a controller 72. The temperature sensor 73 detects the temperature of the battery cell, and the air temperature adjusting device 71 adjusts the temperature of the air passing through the first temperature control duct 30 and the temperature of the air passing through the second temperature control duct 40. can do. That is, the air temperature adjusting device 71 is a first temperature adjusting fluid that is a temperature adjusting fluid that passes through the inside of the first flow path forming member and a temperature adjusting fluid that passes through the inside of the second flow path forming member. This is for adjusting the temperature of the temperature adjusting fluid. Then, the controller 72 controls the air temperature adjusting device 71 based on the temperature of the battery cell detected by the temperature sensor 73 and the temperature of the air passing through the inside of the first temperature control duct 30 and the second temperature control duct. The temperature of the air passing through the inside of 40 is controlled. That is, the controller 72 controls the air temperature adjusting device 71 based on the temperature of the battery cell detected by the temperature sensor 73 to control the temperatures of the first temperature adjusting fluid and the second temperature adjusting fluid. Thereby, optimal temperature control can be performed.

実施形態は前記に限定されるものではなく、例えば、次のように具体化してもよい。
・図４においては各電池セルＣ１〜Ｃ９を直列接続したが、図８に示すように電池セルＣ１〜Ｃ３、Ｃ４〜Ｃ６、Ｃ７〜Ｃ９をそれぞれ並列接続したものを直列接続した場合に適用して、図６，７に示す構成としてもよい。 The embodiment is not limited to the above, and may be embodied as follows, for example.
・ In FIG. 4, the battery cells C1 to C9 are connected in series. However, as shown in FIG. 8, the battery cells C1 to C3, C4 to C6, and C7 to C9 are connected in parallel. The configuration shown in FIGS.

図７において、電池セルＣ１，Ｃ２，Ｃ３における負極の端子２２は、１本のバスバー８０で接続されている。また、電池セルＣ１，Ｃ２，Ｃ３における正極の端子２１および電池セルＣ４，Ｃ５，Ｃ６における負極の端子２２は、１本のバスバー８１で接続されている。さらに、電池セルＣ４，Ｃ５，Ｃ６における正極の端子２１および電池セルＣ７，Ｃ８，Ｃ９における負極の端子２２は、１本のバスバー８２で接続されている。また、電池セルＣ７，Ｃ８，Ｃ９における正極の端子２１は、１本のバスバー８３で接続されている。   In FIG. 7, the negative terminals 22 in the battery cells C <b> 1, C <b> 2, C <b> 3 are connected by a single bus bar 80. Further, the positive terminal 21 in the battery cells C1, C2, C3 and the negative terminal 22 in the battery cells C4, C5, C6 are connected by a single bus bar 81. Further, the positive terminal 21 in the battery cells C4, C5, C6 and the negative terminal 22 in the battery cells C7, C8, C9 are connected by a single bus bar 82. The positive terminals 21 of the battery cells C7, C8, and C9 are connected by a single bus bar 83.

バスバー８０，８２はＹ方向に延び、かつ、一直線上に並んで設けられている。また、バスバー８１，８３はＹ方向に延び、かつ、一直線上に並んで設けられている。このように、第１列セル間接続用導電部材としてのバスバー８０，８２および第２列セル間接続用導電部材としてのバスバー８１，８３は、複数のバスバー（セル間接続用導電部材）を含んでいる。即ち、第１列セル間接続用導電部材群Ｇｒ１１は１以上の第１列セル間接続用導電部材としてのバスバー８０，８２を有し、第２列セル間接続用導電部材群Ｇｒ１２は１以上の第２列セル間接続用導電部材としてのバスバー８１，８３を有している。   The bus bars 80 and 82 extend in the Y direction and are arranged in a straight line. The bus bars 81 and 83 extend in the Y direction and are arranged in a straight line. As described above, the bus bars 80 and 82 as the first row inter-cell connection conductive members and the bus bars 81 and 83 as the second row inter-cell connection conductive members include a plurality of bus bars (inter-cell connection conductive members). It is out. That is, the first row cell connecting conductive member group Gr11 has one or more bus bars 80 and 82 as first row cell connecting conductive members, and the second row cell connecting conductive member group Gr12 is one or more. Bus bars 81 and 83 as second row inter-cell connecting conductive members.

図６に示すように、バスバー８０およびバスバー８２は樹脂製の第１の温調ダクト３０により覆われており、内部に空気が流れる。バスバー８１およびバスバー８３は樹脂製の第２の温調ダクト４０により覆われており、内部に空気が流れる。図６において温調ダクト３０，４０におけるＡ１，Ａ２，Ｂ１，Ｂ２で示す部位（図８の等電位部に対応する部位）は絶縁性を有しても導電性を有していてもよい。   As shown in FIG. 6, the bus bar 80 and the bus bar 82 are covered with the first temperature control duct 30 made of resin, and air flows inside. The bus bar 81 and the bus bar 83 are covered with the second temperature control duct 40 made of resin, and air flows inside. In FIG. 6, the portions indicated by A1, A2, B1, and B2 in the temperature control ducts 30 and 40 (the portions corresponding to the equipotential portion in FIG. 8) may be insulative or conductive.

・図２においては電池セルの端子２１，２２は雌ねじの端子であり、ナット５１によりバスバーを締結する構成であったが、これに代わり、図９に示すように、本体部２０に螺入してバスバーを締結する端子９０を用いてもよい。つまり、電池セルの本体部２０の表面に台座５０を載せ、さらに、その上にバスバー６０〜６７を配置し、端子９０を、バスバー６０〜６７および台座５０を通して電池セルの本体部２０に螺入する構成としてもよい。   In FIG. 2, the battery cell terminals 21 and 22 are female screw terminals, and the bus bar is fastened by the nut 51. Instead, as shown in FIG. Alternatively, a terminal 90 for fastening the bus bar may be used. That is, the pedestal 50 is placed on the surface of the battery cell main body 20, the bus bars 60 to 67 are further disposed thereon, and the terminals 90 are screwed into the battery cell main body 20 through the bus bars 60 to 67 and the pedestal 50. It is good also as composition to do.

・図１０に示すように、四角箱型の電池セルの本体部２０の側面に突条２５を設け、隣接する電池セルにおける突条２５同士を接触させ、隣接する電池セルの本体部２０の間に空気流路となる隙間Ｇａ１を形成して、バスバー６０〜６７の温調に加えて電池セルの本体部２０間に形成した隙間Ｇａ１に空気を流すことにより温度を調整するようにしてもよい。他にも、隙間Ｇａ１に空気を流す構成に代わり、電池セルの本体部２０間に温調用のジャケットを挟み込む構成としてもよい。   -As shown in FIG. 10, the protrusion 25 is provided in the side surface of the main-body part 20 of a square box-type battery cell, the protrusions 25 in adjacent battery cells are made to contact, and between the main-body parts 20 of adjacent battery cells. In addition to the temperature control of the bus bars 60 to 67, the gap Ga <b> 1 serving as an air flow path may be formed in the air gap, and the temperature may be adjusted by flowing air through the gap Ga <b> 1 formed between the battery cell body portions 20. . In addition, instead of the configuration in which air is allowed to flow through the gap Ga1, a configuration in which a temperature adjustment jacket is sandwiched between the main body portions 20 of the battery cells may be employed.

・流路形成部材としての温調ダクト３０，４０の内部には温調用流体としての空気を流したが、他にも、例えば、流路形成部材の内部に温調用流体としてのシリコーンオイルを流してもよい。シリコーンオイルは絶縁体である。   -Although air as a temperature adjusting fluid is flowed inside the temperature adjusting ducts 30 and 40 as the flow path forming member, for example, silicone oil as a temperature adjusting fluid is allowed to flow inside the flow path forming member. May be. Silicone oil is an insulator.

・流路形成部材（図１の場合、温調ダクト３０，４０）における流路の断面形状は問わない。例えば、円形でも四角形状でも台形状でもよい。特に、図２に示すように、台座５０の上にバスバー６０を配置するとともにバスバー６０の上にナット５１を配置した構成においては上ほど幅狭になってので、この形状に合わせた流路断面形状とすると、よりコンパクト化が図られる。   The cross-sectional shape of the flow path in the flow path forming member (in the case of FIG. 1, the temperature control ducts 30 and 40) is not limited. For example, it may be circular, square or trapezoidal. In particular, as shown in FIG. 2, in the configuration in which the bus bar 60 is disposed on the pedestal 50 and the nut 51 is disposed on the bus bar 60, the width becomes narrower toward the top. When the shape is adopted, the size can be further reduced.

・図５の空気温度調整装置７１は、その内部にペルチェモジュール７１ａが配置されている構成としたが、これに限定されるものではなく、他にも例えば冷却用の熱交換器と加熱用の熱交換器を具備し、流路を切り替えることにより空気を冷却または加熱する構成であってもよい。   The air temperature adjusting device 71 in FIG. 5 has a configuration in which the Peltier module 71a is disposed therein, but is not limited to this, and other examples include, for example, a heat exchanger for cooling and a heating device The structure which comprises a heat exchanger and cools or heats air by switching a flow path may be sufficient.

・二次電池はリチウムイオン二次電池であったが、これに限定されることなく、他にも例えば、鉛蓄電池、ニッケル水素電池等であってもよい。
・二次電池の温調装置６９（リチウムイオン二次電池１０）を搭載する車両は問わない。例えば、電気自動車、ハイブリッド車、燃料電池車、産業車両等に搭載するとよい。 -Although the secondary battery was a lithium ion secondary battery, it is not limited to this, For example, a lead storage battery, a nickel hydride battery, etc. may be sufficient.
-The vehicle which mounts the temperature control apparatus 69 (lithium ion secondary battery 10) of a secondary battery is not ask | required. For example, it may be mounted on an electric vehicle, a hybrid vehicle, a fuel cell vehicle, an industrial vehicle, or the like.

１０…リチウムイオン二次電池、２１…端子、２２…端子、３０…第１の温調ダクト、４０…第２の温調ダクト、６０，６１，６２，６３，６４，６５，６６，６７…バスバー、６９…二次電池の温調装置、７１…空気温度調整装置、７２…コントローラ、７３…温度センサ、Ｃ１〜Ｃ９…電池セル、Ｇｒ１…第１列セル間接続用導電部材群、Ｇｒ２…第２列セル間接続用導電部材群、Ｇｒ１１…第１列セル間接続用導電部材群、Ｇｒ１２…第２列セル間接続用導電部材群、Ｍｂ…電池モジュール。   DESCRIPTION OF SYMBOLS 10 ... Lithium ion secondary battery, 21 ... Terminal, 22 ... Terminal, 30 ... 1st temperature control duct, 40 ... 2nd temperature control duct, 60, 61, 62, 63, 64, 65, 66, 67 ... Bus bar, 69 ... Secondary battery temperature control device, 71 ... Air temperature adjustment device, 72 ... Controller, 73 ... Temperature sensor, C1-C9 ... Battery cell, Gr1 ... Conductive member group for connection between first row cells, Gr2 ... Second row inter-cell connecting conductive member group, Gr11... First row inter-cell connecting conductive member group, Gr12... Second row inter-cell connecting conductive member group, Mb.

Claims (5)

複数の電池セルを並設して構成した電池モジュールと、
前記電池セルの隣接方向に沿って延び、前記電池セルから突出する端子に連結されかつ隣接する前記電池セルの前記端子同士を電気的に接続する第１列セル間接続用導電部材群および第２列セル間接続用導電部材群と、
前記第１列セル間接続用導電部材群の周囲を囲む態様でかつ前記第１列セル間接続用導電部材群の延設方向に配置される第１の流路形成部材と、
前記第２列セル間接続用導電部材群の周囲を囲む態様でかつ前記第２列セル間接続用導電部材群の延設方向に配置される第２の流路形成部材と、
を有し、
前記第１列セル間接続用導電部材群および前記第２列セル間接続用導電部材群は、前記電池セルの並設される方向にそれぞれ対応して並設され、
前記第１列セル間接続用導電部材群は１以上の第１列セル間接続用導電部材を有し、
前記第２列セル間接続用導電部材群は１以上の第２列セル間接続用導電部材を有し、
前記第１の流路形成部材および前記第２の流路形成部材は、温調用流体が通過可能であることを特徴とする二次電池。 A battery module configured by arranging a plurality of battery cells in parallel;
A first row inter-cell connecting conductive member group that extends along an adjacent direction of the battery cells, is connected to a terminal protruding from the battery cell, and electrically connects the terminals of the adjacent battery cells; Conductive member group for connection between row cells;
A first flow path forming member disposed in an extending direction of the first row-cell connecting conductive member group in an aspect surrounding the first row-cell connecting conductive member group; and
A second flow path forming member disposed in an extending direction of the second row-cell connecting conductive member group in an aspect surrounding the second row-cell connecting conductive member group; and
Have
The first row inter-cell connecting conductive member group and the second row inter-cell connecting conductive member group are juxtaposed corresponding to the direction in which the battery cells are juxtaposed,
The first row cell connection conductive member group includes one or more first row cell connection conductive members,
The second row inter-cell connecting conductive member group has one or more second row inter-cell connecting conductive members,
The secondary battery, wherein the first flow path forming member and the second flow path forming member are capable of passing a temperature adjusting fluid. 前記第１列セル間接続用導電部材および前記第２列セル間接続用導電部材は、複数であり、
前記第１の流路形成部材、前記第２の流路形成部材および前記温調用流体は、電気絶縁性を有することを特徴とする請求項１に記載の二次電池。 The first row inter-cell connecting conductive member and the second row inter-cell connecting conductive member are plural,
The secondary battery according to claim 1, wherein the first flow path forming member, the second flow path forming member, and the temperature adjusting fluid have electrical insulation. 請求項１または２に記載の二次電池と、
前記電池セルの温度を検出する温度検出手段と、
前記第１の流路形成部材の内部を通過させる前記温調用流体である第１温調用流体および前記第２の流路形成部材の内部を通過させる前記温調用流体である第２温調用流体の温度を調整するための流体温度調整手段と、
前記温度検出手段により検出した前記電池セルの温度に基づいて前記流体温度調整手段を制御して、前記第１温調用流体および前記第２温調用流体の温度を制御する制御手段と、
を備えたことを特徴とする二次電池の温調装置。 The secondary battery according to claim 1 or 2,
Temperature detecting means for detecting the temperature of the battery cell;
A first temperature adjusting fluid that is the temperature adjusting fluid that passes through the inside of the first flow path forming member and a second temperature adjusting fluid that is the temperature adjusting fluid that passes through the inside of the second flow path forming member. Fluid temperature adjusting means for adjusting the temperature;
Control means for controlling the temperature of the fluid temperature adjusting means based on the temperature of the battery cell detected by the temperature detecting means to control the temperature of the first temperature adjusting fluid and the second temperature adjusting fluid;
A temperature control device for a secondary battery, comprising: 請求項１または２に記載の二次電池を搭載してなる車両。   A vehicle comprising the secondary battery according to claim 1. 請求項３に記載の二次電池の温調装置を搭載してなる車両。   A vehicle comprising the secondary battery temperature control device according to claim 3.
JP2011230142A 2011-10-19 2011-10-19 Secondary battery, secondary battery temperature control device and vehicle Expired - Fee Related JP5678863B2 (en)

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