JP2014035918A - Battery pack - Google Patents
Battery pack Download PDFInfo
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- JP2014035918A JP2014035918A JP2012177128A JP2012177128A JP2014035918A JP 2014035918 A JP2014035918 A JP 2014035918A JP 2012177128 A JP2012177128 A JP 2012177128A JP 2012177128 A JP2012177128 A JP 2012177128A JP 2014035918 A JP2014035918 A JP 2014035918A
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- 238000000638 solvent extraction Methods 0.000 abstract description 5
- 125000006850 spacer group Chemical group 0.000 abstract description 3
- 238000005192 partition Methods 0.000 description 30
- 230000001629 suppression Effects 0.000 description 6
- 230000004308 accommodation Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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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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Abstract
Description
本発明は、熱媒体が温調用流路を流れることで二次電池の温度調節が行われる電池パックに関する。 The present invention relates to a battery pack in which a temperature of a secondary battery is adjusted by a heat medium flowing through a temperature adjustment channel.
二次電池が収容されるケースを利用して、熱媒体が流通する流路を区画した電池パックとしては、例えば、特許文献１に記載の蓄電池が挙げられる。
特許文献１に記載の蓄電池（電池パック）は、電槽と、電槽の開口部を塞ぐ蓋を備えている。電槽の内部には、セル室が区画形成されており、各セル室には、正極板及び負極板を交互に積層してなる極板群（二次電池）が設けられている。蓋には、電槽の内部に熱媒体を供給するための開口部が形成されている。蓋には、リブが設けられており、このリブは、電槽の内部に延びている。そして、このリブによって、通気孔（流路）が区画されている。
An example of a battery pack that divides a flow path through which a heat medium flows using a case in which a secondary battery is accommodated is a storage battery described in Patent Document 1.
The storage battery (battery pack) described in Patent Literature 1 includes a battery case and a lid that closes the opening of the battery case. Cell chambers are partitioned in the battery case, and each cell chamber is provided with an electrode plate group (secondary battery) formed by alternately stacking positive and negative electrode plates. The lid is formed with an opening for supplying a heat medium to the inside of the battery case. The lid is provided with a rib, and this rib extends inside the battery case. And the ventilation hole (flow path) is divided by this rib.
ところで、電池パックにおいては、二次電池の劣化を抑制するために、二次電池を効率よく温度調節することが望まれている。
本発明の目的は、二次電池が収容されるケースを利用して流路を区画しつつ、二次電池を効率よく温度調節することができる電池パックを提供することにある。
By the way, in a battery pack, in order to suppress deterioration of a secondary battery, it is desired to adjust the temperature of the secondary battery efficiently.
An object of the present invention is to provide a battery pack capable of efficiently adjusting the temperature of a secondary battery while partitioning a flow path using a case in which the secondary battery is accommodated.
上記課題を解決するため、請求項１に記載の発明は、ケースと、端子が突設された端子面を有し、該端子面を含む側面が前記ケースの内面から離間した態様で前記ケースに収容された二次電池と、前記二次電池の側面と、該側面と対向する前記ケースの内面との間に区画された流路と、前記二次電池と隣り合うとともに、前記流路と連通する温調用流路と、を備え、熱媒体が前記温調用流路を流通することで前記二次電池の温度調節が行われる電池パックであって、前記二次電池の前記側面と前記ケースの内面との間であり、かつ、前記流路から前記端子に至る経路上には、前記端子に前記熱媒体が供給されることを抑制する抑制部材が設けられることを要旨とする。 In order to solve the above problems, the invention according to claim 1 includes a case and a terminal surface on which a terminal protrudes, and the side surface including the terminal surface is separated from the inner surface of the case. A secondary battery housed therein, a side surface of the secondary battery, a flow path defined between the inner surface of the case facing the side surface, and adjacent to the secondary battery, and in communication with the flow path A temperature control flow path, and a temperature of the secondary battery is adjusted by circulating a heat medium through the temperature control flow path, wherein the side surface of the secondary battery and the case The gist is that a suppression member that suppresses the supply of the heat medium to the terminal is provided on a path between the inner surface and the flow path to the terminal.
これによれば、流路を流通する熱媒体は、抑制部材に抑制されて端子に供給されにくい。すなわち、抑制部材により端子面とケースの内面の間の領域に熱媒体が供給されることが抑制されている。このため、流路を流れる熱媒体が、温調用流路以外の領域に流入しにくく、結果として、温調用流路に熱媒体が流入しやすくなり、温調用流路を流通する熱媒体の流量は、抑制部材を設けない場合に比べて増加する。したがって、二次電池が収容されるケースを利用して流路を区画しつつ、二次電池を効率よく温度調節効率することができる。 According to this, the heat medium which distribute | circulates a flow path is suppressed by the suppression member, and is hard to be supplied to a terminal. That is, the suppression member prevents the heat medium from being supplied to the region between the terminal surface and the inner surface of the case. For this reason, it is difficult for the heat medium flowing through the flow path to flow into the region other than the temperature control flow path, and as a result, the heat medium easily flows into the temperature control flow path, and the flow rate of the heat medium flowing through the temperature control flow path Increases compared to the case where no suppression member is provided. Therefore, the temperature of the secondary battery can be efficiently controlled while partitioning the flow path using the case in which the secondary battery is accommodated.
また、前記抑制部材は、前記端子面と前記ケースの内面との間に設けられた絶縁性熱伝導部材であってもよい。
これによれば、端子で発した熱は、絶縁性熱伝導部材を介して放熱される。二次電池が発熱するときには、端子の温度が高くなる。このため、端子の発した熱を絶縁性熱伝導部材で放熱することで、二次電池を効率よく冷却することができる。
Further, the suppressing member may be an insulating heat conductive member provided between the terminal surface and the inner surface of the case.
According to this, the heat generated at the terminal is dissipated through the insulating heat conducting member. When the secondary battery generates heat, the temperature of the terminal increases. For this reason, a secondary battery can be efficiently cooled by radiating the heat | fever which the terminal emitted with the insulating heat conductive member.
本発明によれば、二次電池が収容されるケースを利用して流路を区画しつつ、二次電池を効率よく温度調節することができる。 ADVANTAGE OF THE INVENTION According to this invention, a secondary battery can be temperature-controlled efficiently, dividing a flow path using the case in which a secondary battery is accommodated.
本発明を具体化した一実施形態について図１〜図３にしたがって説明する。
図１及び図２に示すように、電池パック１０は、四角箱状のケース１１を備えている。ケース１１は、四角平板状をなす底板１２と、底板１２の対向する一対の辺から立設された第１の側壁１３ａ，１３ｂと、第１の側壁１３ａ，１３ｂが立設された辺とは異なる一対の辺から立設された第２の側壁１４ａ，１４ｂと、底板１２に対向して設けられる天板１５と、からなる。天板１５は、四角平板状をなす基部１６を有しており、基部１６には、基部１６の厚み方向に延びる第１の区画板１７、第２の区画板１８及び第３の区画板１９が所定の間隔をあけて設けられている。各区画板１７〜１９の先端面は、底板１２の内面に当接している。これにより、ケース１１の内部には、第１の区画板１７、第２の区画板１８、基部１６、第２の側壁１４ａ，１４ｂ及び底板１２に囲まれた第１の収容領域Ｓ１と、第２の区画板１８、第３の区画板１９、基部１６、第２の側壁１４ａ，１４ｂ及び底板１２に囲まれた第２の収容領域Ｓ２と、が区画されている。そして、第１の収容領域Ｓ１及び第２の収容領域Ｓ２には、電池モジュール２１，２２が収容されている。第１の収容領域Ｓ１及び第２の収容領域Ｓ２に収容される電池モジュール２１，２２は、同一の電池モジュール２１，２２であるが、説明の便宜上、第１の収容領域Ｓ１に収容される電池モジュール２１を第１の電池モジュール２１、第２の収容領域Ｓ２に収容される電池モジュール２２を第２の電池モジュール２２と称して説明を行う。
An embodiment embodying the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the battery pack 10 includes a square box-like case 11. The case 11 includes a bottom plate 12 having a rectangular flat plate shape, first side walls 13a and 13b erected from a pair of opposite sides of the bottom plate 12, and sides on which the first side walls 13a and 13b are erected. It consists of second side walls 14 a and 14 b erected from a pair of different sides, and a top plate 15 provided to face the bottom plate 12. The top plate 15 has a base portion 16 having a rectangular flat plate shape. The base portion 16 includes a first partition plate 17, a second partition plate 18, and a third partition plate 19 that extend in the thickness direction of the base portion 16. Are provided at predetermined intervals. The front end surfaces of the partition plates 17 to 19 are in contact with the inner surface of the bottom plate 12. As a result, in the case 11, the first partition plate 17, the second partition plate 18, the base portion 16, the second side walls 14 a and 14 b and the first receiving region S 1 surrounded by the bottom plate 12, The second partition region 18 surrounded by the second partition plate 18, the third partition plate 19, the base 16, the second side walls 14 a and 14 b, and the bottom plate 12 is partitioned. The battery modules 21 and 22 are accommodated in the first accommodation area S1 and the second accommodation area S2. The battery modules 21 and 22 housed in the first housing area S1 and the second housing area S2 are the same battery modules 21 and 22, but for convenience of explanation, the batteries housed in the first housing area S1. The module 21 is referred to as the first battery module 21, and the battery module 22 accommodated in the second accommodation region S <b> 2 is referred to as the second battery module 22 for explanation.
なお、本実施形態では、底板１２、天板１５（基部１６、第１の区画板１７、第２の区画板１８、第３の区画板１９）及び第２の側壁１４ａ，１４ｂの各面のうち、第１の収容領域Ｓ１、第２の収容領域Ｓ２を形成する面がケース１１の内面にあたる。また、第１の側壁１３ａの第１の区画板１７と対向する面、第１の側壁１３ｂの第３の区画板１９と対向する面がケース１１の内面にあたる。 In the present embodiment, the bottom plate 12, the top plate 15 (the base 16, the first partition plate 17, the second partition plate 18, the third partition plate 19) and the respective surfaces of the second side walls 14a and 14b. Among these, the surface forming the first storage region S <b> 1 and the second storage region S <b> 2 corresponds to the inner surface of the case 11. Further, the surface of the first side wall 13 a facing the first partition plate 17 and the surface of the first side wall 13 b facing the third partition plate 19 correspond to the inner surface of the case 11.
図３に示すように、電池モジュール２１，２２は、二次電池としての角型電池２３と、角型電池２３の厚み方向に隣り合うスペーサ２４を交互に並設して構成されている。スペーサ２４は、隣り合う角型電池２３の間隔を維持するとともに、角型電池２３に隣り合うように熱媒体が流通する温調用流路２５を区画している。角型電池２３は、底板１２に載置される面と反対側の端子面２３ａ（高さ方向一面）に端子２６（正極端子及び負極端子）が突設されている。端子面２３ａと、天板１５の基部１６の内面とは、離間しており、端子面２３ａと基部１６との間には、領域Ａが区画されている。 As shown in FIG. 3, the battery modules 21 and 22 are configured by alternately arranging prismatic batteries 23 as secondary batteries and spacers 24 adjacent in the thickness direction of the prismatic batteries 23. The spacer 24 maintains a gap between the adjacent square batteries 23, and defines a temperature adjustment flow path 25 through which the heat medium flows so as to be adjacent to the square batteries 23. The square battery 23 has a terminal 26 (a positive electrode terminal and a negative electrode terminal) protruding from a terminal surface 23 a (one surface in the height direction) opposite to the surface placed on the bottom plate 12. The terminal surface 23 a and the inner surface of the base portion 16 of the top plate 15 are separated from each other, and a region A is defined between the terminal surface 23 a and the base portion 16.
図２に示すように、第１の電池モジュール２１における角型電池２３の幅方向（角型電池２３の厚み方向及び高さ方向に直交する方向）一面（側面）と、角型電池２３の幅方向一面と対向する第１の区画板１７の面との間には、流路としての流入路３１が形成されている。この流入路３１は、温調用流路２５に熱媒体を流入させる。また、角型電池２３の幅方向他面（側面）と、角型電池２３の幅方向他面と対向する第２の区画板１８の面との間には、流路としての流出路３２が形成されている。この流出路３２には、温調用流路２５を流通した後の熱媒体が排出される。 As shown in FIG. 2, the width direction of the rectangular battery 23 in the first battery module 21 (the direction perpendicular to the thickness direction and the height direction of the rectangular battery 23) and the width of the rectangular battery 23 are as follows. An inflow path 31 as a flow path is formed between the one surface in the direction and the surface of the first partition plate 17 facing the surface. The inflow path 31 allows the heat medium to flow into the temperature adjustment path 25. In addition, an outflow path 32 as a flow path is provided between the other side surface (side surface) in the width direction of the prismatic battery 23 and the surface of the second partition plate 18 facing the other side surface in the width direction of the prismatic battery 23. Is formed. The heat medium after flowing through the temperature adjustment channel 25 is discharged to the outflow channel 32.
第２の電池モジュール２２における角型電池２３の幅方向他面と、角型電池２３の幅方向他面と対向する第３の区画板１９の面との間にも、流入路３１が形成されている。また、第２の電池モジュール２２における角型電池２３の幅方向一面と、角型電池２３の幅方向一面と対向する第２の区画板１８の面との間にも流出路３２が形成されている。 An inflow path 31 is also formed between the other surface in the width direction of the square battery 23 in the second battery module 22 and the surface of the third partition plate 19 facing the other surface in the width direction of the square battery 23. ing. In addition, an outflow path 32 is also formed between one surface in the width direction of the square battery 23 in the second battery module 22 and the surface of the second partition plate 18 facing the one surface in the width direction of the square battery 23. Yes.
各電池モジュール２１，２２における角型電池２３の端子面２３ａと、天板１５の基部１６との間（角型電池２３の側面とケース１１の内面との間）に形成された領域Ａには、絶縁性熱伝導部材としての、熱伝導シート３３が設けられている。 In a region A formed between the terminal surface 23a of the prismatic battery 23 and the base 16 of the top plate 15 (between the side surface of the prismatic battery 23 and the inner surface of the case 11) in each of the battery modules 21 and 22. A heat conductive sheet 33 is provided as an insulating heat conductive member.
図１及び図２に示すように、熱伝導シート３３は、矩形状をなしており、その短手方向の長さは、角型電池２３の幅方向の長さと同一となっており、長手方向の長さは、角型電池２３の並設方向一端に位置する角型電池２３から、角型電池２３の並設方向他端に位置する角型電池２３までの長さと同一となっている。また、熱伝導シート３３の厚みは、端子面２３ａから、天板１５の基部１６の内面までの長さ、すなわち、領域Ａの高さと同一となっている。 As shown in FIGS. 1 and 2, the heat conductive sheet 33 has a rectangular shape, and the length in the short direction is the same as the length in the width direction of the prismatic battery 23, and the longitudinal direction. Is the same as the length from the prismatic battery 23 located at one end of the prismatic battery 23 in the juxtaposed direction to the prismatic battery 23 located at the other end of the prismatic battery 23 in the juxtaposed direction. Moreover, the thickness of the heat conductive sheet 33 is the same as the length from the terminal surface 23 a to the inner surface of the base portion 16 of the top plate 15, that is, the height of the region A.
熱伝導シート３３は、絶縁性を有し、かつ、熱伝導率の高い材料から形成されている。そして、領域Ａは、熱伝導シート３３によって占められている。詳細にいえば、熱伝導シート３３は、端子面２３ａの全面を覆うように設けられており、領域Ａの全てが熱伝導シート３３によって占められている。熱伝導シート３３が領域Ａの全てを占めることで、流入路３１から端子２６に至る経路上及び流出路３２から端子２６に至る経路上にも熱伝導シート３３が設けられている。端子２６は熱伝導シート３３に入り込んでいる。そして、領域Ａを介した流入路３１と、流出路３２との連通が熱伝導シート３３によって防止されている。したがって、熱伝導シート３３は、角型電池２３の端子２６に熱媒体が供給されることを抑制する抑制部材として機能している。本実施形態では、熱伝導シート３３は、端子面２３ａ及び基部１６の内面に接しており、端子面２３ａと基部１６は熱伝導シート３３を介して熱的に結合されている。 The heat conductive sheet 33 is made of a material having insulating properties and high heat conductivity. The region A is occupied by the heat conductive sheet 33. Specifically, the heat conductive sheet 33 is provided so as to cover the entire surface of the terminal surface 23 a, and the entire region A is occupied by the heat conductive sheet 33. Since the heat conductive sheet 33 occupies the entire region A, the heat conductive sheet 33 is also provided on the path from the inflow path 31 to the terminal 26 and on the path from the outflow path 32 to the terminal 26. The terminal 26 enters the heat conductive sheet 33. Then, the communication between the inflow path 31 and the outflow path 32 through the region A is prevented by the heat conductive sheet 33. Therefore, the heat conductive sheet 33 functions as a suppressing member that suppresses the supply of the heat medium to the terminal 26 of the square battery 23. In the present embodiment, the heat conductive sheet 33 is in contact with the terminal surface 23 a and the inner surface of the base portion 16, and the terminal surface 23 a and the base portion 16 are thermally coupled via the heat conductive sheet 33.
以下、本実施形態の電池モジュール２１の作用について説明する。
角型電池２３の温度調節を行うときには、流入路３１に温度調節装置（図示せず）によって加熱又は冷却された熱媒体が供給される。流入路３１に供給された熱媒体は、各温調用流路２５に流入し、角型電池２３の温度調節を行う。このとき、領域Ａを介した流入路３１と、流出路３２との連通が熱伝導シート３３によって防止されているため、流入路３１を流通する熱媒体は、領域Ａに流入しない。また、角型電池２３が発熱するとき（放電時及び充電時）には、端子２６の温度が高くなる。端子２６で発した熱は、熱伝導シート３３を伝わり、天板１５に放熱される。
Hereinafter, the operation of the battery module 21 of the present embodiment will be described.
When the temperature of the prismatic battery 23 is adjusted, a heat medium heated or cooled by a temperature adjusting device (not shown) is supplied to the inflow path 31. The heat medium supplied to the inflow path 31 flows into each temperature adjustment flow path 25 and adjusts the temperature of the prismatic battery 23. At this time, since the communication between the inflow path 31 and the outflow path 32 through the region A is prevented by the heat conductive sheet 33, the heat medium flowing through the inflow channel 31 does not flow into the region A. Further, when the prismatic battery 23 generates heat (during discharging and charging), the temperature of the terminal 26 increases. The heat generated at the terminal 26 is transmitted through the heat conductive sheet 33 and is radiated to the top plate 15.
したがって、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）角型電池２３の端子面２３ａと、天板１５の基部１６の内面との間には、熱伝導シート３３が設けられており、端子面２３ａと基部１６の内面の間の領域Ａに熱媒体が供給されることが抑制され、熱伝導シート３３によって端子２６に熱媒体が供給されることが抑制されている。このため、ケース１１内では、流入路３１及び流出路３２を除いた温調用流路２５以外の領域に熱媒体が流入しにくく、結果として、温調用流路２５に熱媒体が流入しやすくなり、温調用流路２５を流通する熱媒体の流量は、熱伝導シート３３を設けない場合に比べて増加する。したがって、ケース１１を利用して流入路３１及び流出路３２を区画しつつ、角型電池２３を効率よく温度調節効率することができる。
Therefore, according to the above embodiment, the following effects can be obtained.
(1) A heat conductive sheet 33 is provided between the terminal surface 23 a of the square battery 23 and the inner surface of the base portion 16 of the top plate 15, and a region A between the terminal surface 23 a and the inner surface of the base portion 16. The supply of the heat medium to the terminal 26 is suppressed by the heat conductive sheet 33. For this reason, in the case 11, it is difficult for the heat medium to flow into a region other than the temperature adjustment flow path 25 excluding the inflow path 31 and the outflow path 32, and as a result, the heat medium easily flows into the temperature adjustment flow path 25. The flow rate of the heat medium flowing through the temperature adjustment flow path 25 increases as compared with the case where the heat conductive sheet 33 is not provided. Therefore, the temperature of the prismatic battery 23 can be efficiently controlled while partitioning the inflow path 31 and the outflow path 32 using the case 11.
（２）抑制部材として熱伝導シート３３を用いている。このため、端子２６で発した熱は、熱伝導シート３３を介して天板１５に放熱される。角型電池２３が発熱するときには、端子２６の温度が高くなる。このため、端子２６の温度を熱伝導シート３３で放熱することで、角型電池２３を効率よく冷却することができる。 (2) The heat conductive sheet 33 is used as the suppressing member. For this reason, the heat generated at the terminal 26 is radiated to the top plate 15 via the heat conductive sheet 33. When the prismatic battery 23 generates heat, the temperature of the terminal 26 increases. For this reason, the rectangular battery 23 can be efficiently cooled by radiating the temperature of the terminal 26 with the heat conductive sheet 33.
（３）ケース１１の一部を構成する天板１５を利用して流入路３１及び流出路３２を区画している。このため、流入路３１及び流出路３２を区画するための部材を別途設ける必要がなく、部品点数が削減される。 (3) The inflow path 31 and the outflow path 32 are partitioned using the top plate 15 that constitutes a part of the case 11. For this reason, it is not necessary to separately provide a member for partitioning the inflow path 31 and the outflow path 32, and the number of parts is reduced.
なお、上記実施形態は、以下のように変更してもよい。
○ 実施形態において、抑制部材として、絶縁性熱伝導部材以外を用いてもよい。例えば、図４に示すように、端子面２３ａと天板１５の基部１６の間に区画された領域Ａに、角型電池２３の並設方向全体に延びる一対の板状部材４１，４２を設けてもよい。一対の板状部材４１，４２は、各角型電池２３の両端子２６を外側から挟むように設けられている。板状部材４１は、流入路３１から端子２６に至る経路上に設けられている。板状部材４２は、流出路３２から端子２６に至る経路上に設けられている。
In addition, you may change the said embodiment as follows.
In embodiment, you may use other than an insulating heat conductive member as a suppression member. For example, as shown in FIG. 4, a pair of plate-like members 41, 42 extending in the entire parallel direction of the prismatic batteries 23 is provided in a region A defined between the terminal surface 23 a and the base 16 of the top plate 15. May be. The pair of plate-like members 41 and 42 are provided so as to sandwich both terminals 26 of each square battery 23 from the outside. The plate-like member 41 is provided on a path from the inflow path 31 to the terminal 26. The plate member 42 is provided on a path from the outflow path 32 to the terminal 26.
○ 実施形態において、角型電池２３の端子面２３ａの向きを変更してもよい。例えば、図５に示すように、端子面２３ａが第２の区画板１８と対向するように角型電池２３を配設してもよい。この場合、端子面２３ａと、端子面２３ａと対向する第２の区画板１８の面との間に、角型電池２３の並設方向全体に延びる１枚の板状の抑制部材４３を設けることで、端子面２３ａと、端子面２３ａと対向する第２の区画板１８の面との間に形成された領域Ａへの熱媒体の流入を抑制する。なお、この場合、第１の収容領域Ｓ１での流入路３１は、第１の電池モジュール２１における角型電池２３の幅方向一面と、基部１６の内面との間に区画される。また、第１の収容領域Ｓ１での流出路３２は、第１の電池モジュール２１における角型電池２３の端子面２３ａと反対側の面と、端子面２３ａと反対側の面と対向する第１の区画板１７の面との間に区画される。また、角型電池２３の端子面２３ａと反対側の面と、端子面２３ａと反対側の面と対向する第１の区画板１７の面との間には、流入路３１と流出路３２が連通することを防止する連通防止部材５１が設けられる。なお、第２の収容領域Ｓ２においても、同様に流入路３１及び流出路３２が区画されている。 In the embodiment, the orientation of the terminal surface 23a of the square battery 23 may be changed. For example, as shown in FIG. 5, the prismatic battery 23 may be disposed so that the terminal surface 23 a faces the second partition plate 18. In this case, a single plate-like restraining member 43 extending in the entire parallel direction of the prismatic batteries 23 is provided between the terminal surface 23a and the surface of the second partition plate 18 facing the terminal surface 23a. Therefore, the inflow of the heat medium to the region A formed between the terminal surface 23a and the surface of the second partition plate 18 facing the terminal surface 23a is suppressed. In this case, the inflow path 31 in the first accommodation region S <b> 1 is partitioned between one surface in the width direction of the rectangular battery 23 in the first battery module 21 and the inner surface of the base portion 16. In addition, the outflow path 32 in the first housing region S1 is a first surface facing the surface opposite to the terminal surface 23a of the prismatic battery 23 and the surface opposite to the terminal surface 23a in the first battery module 21. It is divided between the surface of the partition plate 17. Further, an inflow path 31 and an outflow path 32 are provided between the surface of the rectangular battery 23 opposite to the terminal surface 23a and the surface of the first partition plate 17 facing the surface opposite to the terminal surface 23a. A communication preventing member 51 for preventing communication is provided. In addition, also in 2nd accommodating area | region S2, the inflow path 31 and the outflow path 32 are divided similarly.
○ 実施形態において、第１の区画板１７及び第３の区画板１９を設けなくてもよい。この場合、第１の区画板１７に代わり、第１の側壁１３ａの内面と第１の電池モジュール２１における角型電池２３の幅方向一面で流入路３１が区画される。また、第３の区画板１９に代わり、第１の側壁１３ｂの内面と第２の電池モジュール２２における角型電池２３の幅方向他面で流入路３１が区画される。 In the embodiment, the first partition plate 17 and the third partition plate 19 may not be provided. In this case, instead of the first partition plate 17, the inflow path 31 is partitioned by the inner surface of the first side wall 13 a and the one surface in the width direction of the rectangular battery 23 in the first battery module 21. Further, instead of the third partition plate 19, the inflow passage 31 is partitioned by the inner surface of the first side wall 13 b and the other surface in the width direction of the rectangular battery 23 in the second battery module 22.
○ 実施形態において、電池モジュール２１，２２の数は任意の数に変更してもよい。
○ 実施形態において、第１の区画板１７、第２の区画板１８及び第３の区画板１９は、底板１２に形成されていてもよい。
In the embodiment, the number of battery modules 21 and 22 may be changed to an arbitrary number.
In the embodiment, the first partition plate 17, the second partition plate 18, and the third partition plate 19 may be formed on the bottom plate 12.
○ 実施形態において、絶縁性熱伝導部材として、絶縁熱伝導樹脂や、ＴＩＭ(Thermal Interface Material)を用いてもよい。
○ 実施形態において、天板１５に抑制部材を一体的に設けてもよい。
In the embodiment, an insulating heat conductive resin or TIM (Thermal Interface Material) may be used as the insulating heat conductive member.
In the embodiment, the top plate 15 may be integrally provided with a suppressing member.
○ 実施形態において、熱伝導シート３３は、基部１６の内面に接していなくてもよい。
○ 抑制部材は、流入路３１（又は流出路３２）から端子２６に至る経路上に設けられていればよく、角型電池２３の幅方向の側面とケース１１の内面の間に設けられていてもよい。
In the embodiment, the heat conductive sheet 33 may not be in contact with the inner surface of the base portion 16.
The suppression member only needs to be provided on the path from the inflow path 31 (or the outflow path 32) to the terminal 26, and is provided between the side surface in the width direction of the rectangular battery 23 and the inner surface of the case 11. Also good.
１０…電池パック、１１…ケース、２３…二次電池としての角型電池、２３ａ…端子面、２５…温調用流路、２６…端子、３１…流路としての流入路、３２…流路としての流出路、３３…抑制部材としての熱伝導シート。 DESCRIPTION OF SYMBOLS 10 ... Battery pack, 11 ... Case, 23 ... Square battery as a secondary battery, 23a ... Terminal surface, 25 ... Temperature control flow path, 26 ... Terminal, 31 ... Inflow path as flow path, 32 ... As flow path Outflow path, 33 ... heat conduction sheet as a restraining member.
Claims (2)
端子が突設された端子面を有し、該端子面を含む側面が前記ケースの内面から離間した態様で前記ケースに収容された二次電池と、
前記二次電池の側面と、該側面と対向する前記ケースの内面との間に区画された流路と、
前記二次電池と隣り合うとともに、前記流路と連通する温調用流路と、を備え、熱媒体が前記温調用流路を流通することで前記二次電池の温度調節が行われる電池パックであって、
前記二次電池の前記側面と前記ケースの内面との間であり、かつ、前記流路から前記端子に至る経路上には、前記端子に前記熱媒体が供給されることを抑制する抑制部材が設けられることを特徴とする電池パック。 Case and
A secondary battery housed in the case having a terminal surface projecting from the terminal, and a side surface including the terminal surface being separated from the inner surface of the case;
A flow path defined between a side surface of the secondary battery and an inner surface of the case facing the side surface;
A temperature control channel that is adjacent to the secondary battery and communicates with the channel, and a battery pack that adjusts the temperature of the secondary battery by allowing a heat medium to flow through the temperature control channel. There,
A suppressing member that suppresses the supply of the heat medium to the terminal on the path from the flow path to the terminal between the side surface of the secondary battery and the inner surface of the case. A battery pack characterized by being provided.
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