JP6260467B2 - Assembled battery - Google Patents

Assembled battery Download PDF

Info

Publication number
JP6260467B2
JP6260467B2 JP2014129399A JP2014129399A JP6260467B2 JP 6260467 B2 JP6260467 B2 JP 6260467B2 JP 2014129399 A JP2014129399 A JP 2014129399A JP 2014129399 A JP2014129399 A JP 2014129399A JP 6260467 B2 JP6260467 B2 JP 6260467B2
Authority
JP
Japan
Prior art keywords
assembled battery
case
buffer
battery
disposed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2014129399A
Other languages
Japanese (ja)
Other versions
JP2016009585A (en
Inventor
隆太郎 西川
隆太郎 西川
彰吾 ▲つる▼田
彰吾 ▲つる▼田
殿西 雅光
雅光 殿西
強志 飛鷹
強志 飛鷹
Original Assignee
株式会社Gsユアサ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社Gsユアサ filed Critical 株式会社Gsユアサ
Priority to JP2014129399A priority Critical patent/JP6260467B2/en
Publication of JP2016009585A publication Critical patent/JP2016009585A/en
Application granted granted Critical
Publication of JP6260467B2 publication Critical patent/JP6260467B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Description

本発明は、複数の単電池(電池セル)を電気的に接続してモジュール化した組電池(電池モジュール)に関する。   The present invention relates to an assembled battery (battery module) in which a plurality of single cells (battery cells) are electrically connected to form a module.
複数の単電池(例えばリチウムイオン電池のような二次電池)を電気的に接続してモジュール化した組電池本体と、この組電池本体を収容する外装ケースとを備える組電池が知られている(例えば、特許文献1参照)。通常、外装ケースは、組電池本体を開口から挿入して収容するためケース本体と、ケース本体に取り付けられて開口を塞ぐ蓋体とを備える。   There is known an assembled battery including an assembled battery body obtained by electrically connecting a plurality of single cells (for example, a secondary battery such as a lithium ion battery) into a module, and an exterior case that accommodates the assembled battery body. (For example, refer to Patent Document 1). Usually, the exterior case includes a case main body and a lid body that is attached to the case main body and closes the opening in order to insert and accommodate the assembled battery main body from the opening.
特開2012−15011号公報JP2012-15011A
従来の組電池では、ケース本体の開口から組電池本体を挿入し、ケース本体に組電池本体を収容した状態で、組電池本体とケース本体との間に隙間ないし空間がある。この隙間ないし空間があることで、ケース本体内での組電池本体の位置ずれ(組電池本体のケース本体に対する相対的な変位)が起こり得る。この位置ずれは、組電池の構成部品の損傷や単電池の損傷の原因となる。言い換えれば、組電池本体とケース本体との間の隙間ないし空間は、組電池の耐振動性及び耐衝撃性を低下させる。   In a conventional assembled battery, there is a gap or space between the assembled battery body and the case body in a state where the assembled battery body is inserted from the opening of the case body and the assembled battery body is accommodated in the case body. Due to the gap or space, the assembled battery body may be displaced in the case body (relative displacement of the assembled battery body with respect to the case body). This misalignment causes damage to the components of the assembled battery and damage to the unit cells. In other words, the gap or space between the assembled battery main body and the case main body reduces the vibration resistance and impact resistance of the assembled battery.
本発明は、組電池の耐振動性及び耐衝撃性とを向上することを課題とする。   An object of the present invention is to improve the vibration resistance and impact resistance of an assembled battery.
本発明は、底壁と、前記底壁から延びる長側壁と、前記底壁から延びる短側壁とそれぞれを有し、前記長側壁が重なるように所定の積層方向に積層されると共に電気的に接続されてモジュール化された複数の単電池と、前記複数の単電池を拘束する拘束部材とを備える組電池本体と、前記組電池本体を収容する外装ケースと、前記拘束部材と前記外装ケースとの間に配置され、前記組電池本体及び前記外装ケースに当接する緩衝部材とを備え、前記組電池本体は前記積層方向に沿って延びる複数の側部を備え、前記緩衝部材が配置された前記組電池本体の前記側部と対向する前記組電池本体の他の側部、又は前記緩衝部材が配置された前記組電池本体の前記側部に、制御機器が配置されている、組電池を提供する。 The present invention has a bottom wall, a long side wall extending from the bottom wall, and a short side wall extending from the bottom wall, and is laminated in a predetermined laminating direction so that the long side walls overlap , and electrically An assembled battery main body comprising a plurality of unit cells connected and modularized, a constraining member for constraining the plurality of single cells, an outer case for housing the assembled battery main body, the constraining member, and the outer case And a buffer member that contacts the assembled battery body and the exterior case, the assembled battery body includes a plurality of side portions extending along the stacking direction, and the buffer member is disposed. Provided is an assembled battery in which a control device is arranged on the other side of the assembled battery main body facing the side of the assembled battery main body, or on the side of the assembled battery main body on which the buffer member is arranged. To do.
組電池本体の拘束部材と外装ケースとの間に介在する緩衝部材によって、外装ケース内での組電池本体の位置ずれ(組電池本体の外装ケースに対する相対的な変位)が拘束される。言い換えれば、緩衝部材を設けたことで、外装ケース内での組電池本体の位置ずれが実質的に許容されない。   The buffer member interposed between the restraining member of the assembled battery body and the exterior case restrains the displacement of the assembled battery body within the exterior case (relative displacement of the assembled battery body with respect to the exterior case). In other words, by providing the buffer member, the positional deviation of the assembled battery body within the exterior case is not substantially allowed.
特に、組電池に対して振動や衝撃が加えられた場合でも、組電池本体の拘束部材と外装ケースとの間に介在する緩衝部材により、外装ケース内での組電池の位置ずれが拘束される。その結果、組電池に対して振動や衝撃が加えられた場合でも、外装ケース内での組電池の位置ずれと、それに起因する組電池の構成部品の損傷や単電池の損傷を防止できる。つまり、緩衝部材を設けることで組電池の耐振動性及び耐衝撃性が向上する。   In particular, even when vibration or impact is applied to the assembled battery, the displacement of the assembled battery in the exterior case is restrained by the buffer member interposed between the restraining member of the assembled battery body and the exterior case. . As a result, even when vibration or impact is applied to the assembled battery, it is possible to prevent the positional deviation of the assembled battery in the outer case, damage to the constituent parts of the assembled battery, and damage to the single battery. In other words, the vibration resistance and impact resistance of the assembled battery are improved by providing the buffer member.
本発明に係る組電池によれば、組電池本体の拘束部材と外装ケースとの間に緩衝部材が配置されているので、組電池の耐振動性及び耐衝撃性を向上できる。   According to the assembled battery according to the present invention, since the buffer member is disposed between the restraining member of the assembled battery main body and the outer case, the vibration resistance and impact resistance of the assembled battery can be improved.
本発明の第1実施形態に係る組電池の正面断面図。1 is a front sectional view of an assembled battery according to a first embodiment of the present invention. 図1のII-II線での断面図。Sectional drawing in the II-II line of FIG. 第1実施形態に係る組電池の分解斜視図。The disassembled perspective view of the assembled battery which concerns on 1st Embodiment. 第1実施形態における組電池本体の概念的な斜視図。The conceptual perspective view of the assembled battery main body in 1st Embodiment. 本発明の第2実施形態に係る組電池の図2と同様の断面図。Sectional drawing similar to FIG. 2 of the assembled battery which concerns on 2nd Embodiment of this invention. 本発明の第3実施形態に係る組電池の図2と同様の断面図。Sectional drawing similar to FIG. 2 of the assembled battery which concerns on 3rd Embodiment of this invention. 本発明の第4実施形態に係る組電池の図2と同様の断面図。Sectional drawing similar to FIG. 2 of the assembled battery which concerns on 4th Embodiment of this invention. 本発明の第5実施形態に係る組電池の図2と同様の断面図。Sectional drawing similar to FIG. 2 of the assembled battery which concerns on 5th Embodiment of this invention. 本発明の第6実施形態に係る組電池の正面断面図。Front sectional drawing of the assembled battery which concerns on 6th Embodiment of this invention. 図9のX−X線での断面図。Sectional drawing in the XX line of FIG. 第6実施形態における組電池本体の概念的な斜視図。The conceptual perspective view of the assembled battery main body in 6th Embodiment. 図10の部分XIIの模式的な拡大図。FIG. 11 is a schematic enlarged view of a portion XII in FIG. 10. 本発明の第7実施形態に係る組電池の正面断面図。Front sectional drawing of the assembled battery which concerns on 7th Embodiment of this invention. 図13のXIV-XIV線での断面図。Sectional drawing in the XIV-XIV line | wire of FIG. 本発明の第8実施形態に係る組電池の正面断面図。Front sectional drawing of the assembled battery which concerns on 8th Embodiment of this invention. 図15のXVI-XVI線での断面図。Sectional drawing in the XVI-XVI line of FIG. 本発明の第9実施形態に係る組電池の正面断面図。Front sectional drawing of the assembled battery which concerns on 9th Embodiment of this invention. 図17のXVIII-XVIII線での断面図。Sectional drawing in the XVIII-XVIII line of FIG. 本発明の第10実施形態に係る組電池の正面断面図。Front sectional drawing of the assembled battery which concerns on 10th Embodiment of this invention. 図19のXX-XX線での断面図。Sectional drawing in the XX-XX line of FIG. 本発明の第11実施形態に係る組電池の正面断面図。A front sectional view of an assembled battery concerning an 11th embodiment of the present invention. 図21のXXII-XXII線での断面図。Sectional drawing in the XXII-XXII line of FIG.
次に、添付図面を参照して本発明の実施形態を説明する。   Next, embodiments of the present invention will be described with reference to the accompanying drawings.
(第1実施形態)
図1から図3は、本発明の第1実施形態に係る組電池1を示す。組電池1は、組電池本体2、電池監視要素(制御機器)3、及び緩衝部材4を備える。また、組電池1は、組電池本体2、電池監視要素3、及び緩衝部材4を収容する外装ケース5を備える。
(First embodiment)
1 to 3 show an assembled battery 1 according to a first embodiment of the present invention. The assembled battery 1 includes an assembled battery body 2, a battery monitoring element (control device) 3, and a buffer member 4. The assembled battery 1 includes an assembled battery main body 2, a battery monitoring element 3, and an exterior case 5 that houses the buffer member 4.
外装ケース5は、本実施形態では箱形で上部に開口6を有するケース本体7と、ケース本体7に取り付けられて開口6を塞ぐ蓋体8とを備える。   The exterior case 5 includes a case body 7 having a box shape in the present embodiment and having an opening 6 at the top, and a lid body 8 attached to the case body 7 and closing the opening 6.
本実施形態では、ケース本体7及び蓋体8は絶縁性を有する樹脂製である。ケース本体7及び蓋体8は、組電池本体2と向かい合う内面が絶縁性を有する樹脂製であることが好ましい。ケース本体7及び蓋体8の内面が絶縁性を有する樹脂製であることで、組電池本体2の絶縁性を向上できる。ケース本体7及び蓋体8は、内面側は絶縁性を有する樹脂製とし、外面側は剛性確保のために金属製としてもよい。この場合は、ボルト、溶接等によって、蓋体8がケース本体7に対して固定される。   In the present embodiment, the case main body 7 and the lid body 8 are made of an insulating resin. The case main body 7 and the lid body 8 are preferably made of a resin having an insulating inner surface facing the assembled battery main body 2. Since the inner surfaces of the case body 7 and the lid body 8 are made of resin having insulation properties, the insulation properties of the assembled battery body 2 can be improved. The case main body 7 and the lid body 8 may be made of an insulating resin on the inner surface side and may be made of metal on the outer surface side to ensure rigidity. In this case, the lid 8 is fixed to the case body 7 by bolts, welding, or the like.
ケース本体7は、本実施形態では略矩形である底壁(底部)7eと、下端側が底壁7eの周縁部に接続し上端側が開口6を画定する周側壁(周側部)7fとを備える。図2に最も明瞭に示すように、本実施形態における周側壁7fは、互いに対向する一対の側壁7a,7bと、これらの側壁7a,7bの端部をつなぐ他の一対の側壁7c,7dと備える。   The case body 7 includes a bottom wall (bottom part) 7e that is substantially rectangular in the present embodiment, and a peripheral side wall (peripheral side part) 7f that has a lower end connected to the peripheral edge of the bottom wall 7e and an upper end that defines the opening 6. . As shown most clearly in FIG. 2, the peripheral side wall 7f in the present embodiment includes a pair of side walls 7a and 7b facing each other and another pair of side walls 7c and 7d connecting the end portions of these side walls 7a and 7b. Prepare.
蓋体8は、開口6と対応した略矩形状の頂壁8aと、頂壁8aの周縁部に設けられた周側壁8bとを備える。組電池本体2、電池監視要素3、及び緩衝部材4が、ケース本体7の開口6からケース本体7の内部へ挿入され、かつこれらがケース本体7に収容された後、蓋体8がケース本体7の周側壁7fの上端部に取り付けられる。蓋体8のケース本体7への固定は、例えば図示しないボルトによる。溶着により蓋体8をケース本体7に固定してもよい。   The lid 8 includes a substantially rectangular top wall 8a corresponding to the opening 6 and a peripheral side wall 8b provided at the peripheral edge of the top wall 8a. After the assembled battery main body 2, the battery monitoring element 3, and the buffer member 4 are inserted into the case main body 7 through the opening 6 of the case main body 7, and these are accommodated in the case main body 7, the lid 8 is the case main body. 7 is attached to the upper end of the peripheral side wall 7f. The lid 8 is fixed to the case body 7 by, for example, a bolt (not shown). The lid 8 may be fixed to the case body 7 by welding.
図3に最も明瞭に示すように、組電池本体2はモジュール化された複数個(本実施形態では4個)の単電池9を備える。   As shown most clearly in FIG. 3, the assembled battery body 2 includes a plurality of (four in the present embodiment) unit cells 9 that are modularized.
図4も併せて参照すると、本実施形態における単電池9は、扁平な角型(直方体)のリチウムイオン電池である。単電池9は、リチウムイオン電池以外の非水電解質二次電池であってもよく、非水電解質二次電池の範疇に含まれない電池であってもよい。本実施形態における単電池9の容器11は、開口12を有する容器本体13と、容器本体13に固定されて開口12を塞ぐ蓋体14とを備える。容器本体13と蓋体14は、アルミニウム、ステンレスのような金属製である。容器本体13内には、電極体と電解液(いずれも図示せず)が収容されている。蓋体14の両端付近には、電極体と電気的に接続された正負の電極端子15がそれぞれ設けられている。また、蓋体14の中央付近には、容器11の内圧上昇時に開放する安全弁27が設けられている。容器11は絶縁シート(図12の符号29参照)により覆われている。   Referring also to FIG. 4, the unit cell 9 in this embodiment is a flat rectangular (rectangular) lithium ion battery. The unit cell 9 may be a non-aqueous electrolyte secondary battery other than a lithium ion battery, or may be a battery not included in the category of the non-aqueous electrolyte secondary battery. The container 11 of the unit cell 9 in the present embodiment includes a container body 13 having an opening 12 and a lid body 14 that is fixed to the container body 13 and closes the opening 12. The container body 13 and the lid body 14 are made of metal such as aluminum or stainless steel. An electrode body and an electrolytic solution (both not shown) are accommodated in the container body 13. Near both ends of the lid body 14, positive and negative electrode terminals 15 electrically connected to the electrode body are provided. Further, a safety valve 27 that is opened when the internal pressure of the container 11 is increased is provided near the center of the lid body 14. The container 11 is covered with an insulating sheet (see reference numeral 29 in FIG. 12).
図4を参照すると、単電池9の容器本体13は、開口12と対向する細長い矩形状の底壁13aと、底壁13aの周縁部から延びる周側壁13bとを備える、周側壁13bは、底壁13aの長辺から延びる一対の長側壁13cと、周側壁13bの短辺から延びる一対の短側壁13dとを備える。蓋体14は、長側壁13c及び短側壁13dの底壁13aとは反対側の端部に、例えば溶接により固定される。   Referring to FIG. 4, the container body 13 of the unit cell 9 includes an elongated rectangular bottom wall 13a facing the opening 12 and a peripheral side wall 13b extending from the peripheral edge of the bottom wall 13a. A pair of long side walls 13c extending from the long side of the wall 13a and a pair of short side walls 13d extending from the short side of the peripheral side wall 13b are provided. The lid body 14 is fixed to the ends of the long side wall 13c and the short side wall 13d opposite to the bottom wall 13a, for example, by welding.
図1、図3、及び図4を参照すると、複数の単電池9が隣接する単電池9間にスペーサ17が介装された状態で積層されている。本実施形態におけるスペーサ17は、単電池9の容器11間の絶縁確保のために、絶縁性を有する樹脂製である。本実施形態では、隣接する2個の単電池9の長側壁13cが互いに対向する姿勢で、かつ電極端子15が互いに位置合わせされた状態で、複数の単電池9が積層されている。複数の単電池9の積層方向を、図1、図3、及び図4において、矢印Aで示す。   Referring to FIGS. 1, 3, and 4, a plurality of unit cells 9 are stacked with spacers 17 interposed between adjacent unit cells 9. The spacer 17 in the present embodiment is made of an insulating resin for ensuring insulation between the containers 11 of the unit cells 9. In the present embodiment, the plurality of unit cells 9 are stacked with the long side walls 13c of the two adjacent unit cells 9 facing each other and the electrode terminals 15 aligned with each other. The stacking direction of the plurality of unit cells 9 is indicated by an arrow A in FIGS. 1, 3, and 4.
積層方向Aの最も外側に位置する2個の単電池9のさらに外側には、エンドプレート(拘束部材)18がそれぞれ配置されている。これらのエンドプレート18は、最も外側の単電池9の長側壁13cに重ねて配置されている。一対のエンドプレート18間に、複数の単電池9と複数のスペーサ17が挟み込まれている。エンドプレート18を複数の拘束バンド(拘束部材)19で連結することにより、複数の単電池9と複数のスペーサ17は一対のエンドプレート18によって積層方向Aの両側から挟持された状態、すなわち積層方向Aに拘束された状態で固定されている。エンドプレート18と拘束バンド19は、金属製である。エンドプレート18と拘束バンド19の剛性は、単電池9の容器本体11の剛性よりも高いことが好ましい。エンドプレート18と拘束バンド19が単電池9の容器本体11よりも高剛性とすることで、容器本体11の膨張、変形、位置ずれ等をエンドプレート18と拘束バンド19とにより効果的に抑制できる。   End plates (restraining members) 18 are respectively arranged on the outer sides of the two unit cells 9 located on the outermost side in the stacking direction A. These end plates 18 are arranged so as to overlap the long side wall 13c of the outermost cell 9. A plurality of single cells 9 and a plurality of spacers 17 are sandwiched between the pair of end plates 18. By connecting the end plate 18 with a plurality of restraining bands (constraining members) 19, the plurality of single cells 9 and the plurality of spacers 17 are sandwiched by the pair of end plates 18 from both sides in the stacking direction A, that is, the stacking direction. It is fixed in a state of being restrained by A. The end plate 18 and the restraining band 19 are made of metal. The rigidity of the end plate 18 and the restraining band 19 is preferably higher than the rigidity of the container body 11 of the unit cell 9. By making the end plate 18 and the restraining band 19 more rigid than the container body 11 of the unit cell 9, the end plate 18 and the restraining band 19 can effectively suppress the expansion, deformation, displacement, and the like of the container body 11. .
隣接する単電池9の電極端子15は、図1及び図3に概念的に示すバスバー20によって電気的に接続されている。本実施形態では、4個の単電池9が直列に接続されている。また、積層方向Aの最も外側に配置された2個の単電池9の一方の電極端子15は、蓋体8を貫通して外装ケース5の外部に突出する外部端子16(図1にのみ概念的に示す)に、図示しないバスバーを介して電気的に接続されている。外装ケース5の蓋体8には、外部端子16に加え、外部接続用のコネクタ26(図1にのみ概念的に示す)が設けられている。   The electrode terminals 15 of the adjacent unit cells 9 are electrically connected by a bus bar 20 conceptually shown in FIGS. In the present embodiment, four unit cells 9 are connected in series. In addition, one electrode terminal 15 of the two unit cells 9 arranged on the outermost side in the stacking direction A is an external terminal 16 that penetrates the lid 8 and protrudes to the outside of the outer case 5 (concept only in FIG. 1). Are electrically connected via a bus bar (not shown). In addition to the external terminals 16, the cover 8 of the outer case 5 is provided with a connector 26 for external connection (shown conceptually only in FIG. 1).
図4を参照すると、前述のような態様で積層された複数の単電池9を有する組電池本体2は、全体として概ね直方体状の外形を有する。具体的には、組電池本体2の外形は、積層方向Aに互いに対向する一対の端部21A,21Bを有する。これら組電池本体2の端部21A,21Bは、積層方向Aの最も外側に位置する2個の単電池9の長側壁13cにより構成されている。図4では図示していないが、前述のように積層方向Aの最も外側に位置する2個の単電池9の外側には、さらにエンドプレート18が配置されている。従って、エンドプレート18が組電池本体2の端部21A,21Bを構成しているとも言える。また、組電池本体2の外形は、単電池9の長側壁13cの図心を通り積層方向Aに延びる仮想線(中心線B)の周囲を取り囲む、4つの側部22A,22B,22C,22Dを有する。側部22Aは、複数の単電池9の底壁13aにより構成されている。側部22Bは、複数の単電池9の蓋体14により構成されている。側部22C,22Dは、複数の単電池9の短側壁13dにより構成されている。4つの側部22A,22B,22C,22Dは、いずれも積層方向Aに沿って延びている。前述の拘束バンド19は、側部22C,22Dに配置されている。   Referring to FIG. 4, the assembled battery body 2 having a plurality of unit cells 9 stacked in the above-described manner has a generally rectangular parallelepiped outer shape as a whole. Specifically, the outer shape of the assembled battery body 2 has a pair of end portions 21A and 21B that face each other in the stacking direction A. The end portions 21A and 21B of the assembled battery main body 2 are constituted by the long side walls 13c of the two unit cells 9 positioned on the outermost side in the stacking direction A. Although not shown in FIG. 4, the end plate 18 is further arranged outside the two unit cells 9 located on the outermost side in the stacking direction A as described above. Therefore, it can be said that the end plate 18 constitutes the end portions 21 </ b> A and 21 </ b> B of the assembled battery body 2. Further, the outer shape of the assembled battery main body 2 has four side portions 22A, 22B, 22C, and 22D that surround the imaginary line (center line B) that passes through the centroid of the long side wall 13c of the unit cell 9 and extends in the stacking direction A. Have The side portion 22A is constituted by the bottom walls 13a of the plurality of unit cells 9. The side portion 22 </ b> B is configured by the lid bodies 14 of the plurality of unit cells 9. The side portions 22C and 22D are configured by short side walls 13d of the plurality of unit cells 9. The four side portions 22A, 22B, 22C, and 22D all extend along the stacking direction A. The restraining band 19 is disposed on the side portions 22C and 22D.
図1及び図3に最も明瞭に示すように、本実施形態における組電池本体2は、単電池9の積層方向Aが、図において上下方向(Z方向)、すなわちケース本体7の底壁7eと蓋体8の対向方向とが一致する姿勢で、ケース本体7内に収容されている。具体的には、組電池本体2は、積層方向Aの一方の端部21Aがケース本体7の底壁7e上に載置され、積層方向Aの他方の端部21Bがケース本体7の開口6側に位置して蓋体8と対向している。   As shown most clearly in FIGS. 1 and 3, in the assembled battery body 2 in the present embodiment, the stacking direction A of the unit cells 9 is the vertical direction (Z direction) in the drawing, that is, the bottom wall 7 e of the case body 7. It is accommodated in the case main body 7 in a posture in which the facing direction of the lid body 8 coincides. Specifically, the assembled battery body 2 has one end 21A in the stacking direction A placed on the bottom wall 7e of the case body 7 and the other end 21B in the stacking direction A is the opening 6 of the case body 7. It is located on the side and faces the lid 8.
図1及び図2を参照すると、前述のように組電池本体2の端部21A(図において最下段の単電池9の長側壁13c)がケース本体7の底壁7eと対向し、組電池本体2の端部21B(図において最上段の単電池9の長側壁13c)が蓋体8と対向する。また、組電池本体2の側部22A(単電池9の底壁13a)がケース本体7の側壁7aと対向し、組電池本体2の側部22B(単電池9の蓋体14)がケース本体7の側壁7bと対向する。さらに、組電池本体2の側部22C(単電池9の一方の短側壁13d)がケース本体7の側壁7cと対向し、組電池本体2の側部22D(単電池9の他方の短側壁13d)がケース本体7の側壁7dと対向する。   1 and 2, as described above, the end 21A of the assembled battery body 2 (the long side wall 13c of the unit cell 9 in the lowermost stage in the figure) faces the bottom wall 7e of the case body 7, and the assembled battery body Two end portions 21B (the long side wall 13c of the uppermost unit cell 9 in the figure) face the lid 8. Further, the side portion 22A of the assembled battery body 2 (the bottom wall 13a of the unit cell 9) faces the side wall 7a of the case body 7, and the side portion 22B of the assembled battery body 2 (the lid 14 of the unit cell 9) is the case body. 7 side wall 7b. Further, the side portion 22C of the assembled battery body 2 (one short side wall 13d of the unit cell 9) faces the side wall 7c of the case body 7, and the side portion 22D of the assembled battery body 2 (the other short side wall 13d of the unit cell 9). ) Faces the side wall 7d of the case body 7.
図1及び図2を参照すると、組電池本体2の側部22C(単電池9の一方の短側壁13d)とケース本体7の側壁7cとの間の隙間ないし空間には、組電池1を監視する電池監視要素3が配置されている。言い換えれば、電池監視要素3は、組電池本体2の積層方向Aに沿って延びる側部22Cと、ケース本体7の側壁7cとの間に配置されている。本実施形態では、電池監視要素3は、組電池本体2の側部22Cに対して固定されている。電池監視要素3は、例えば、回路基板とリレーユニットとを有する。電池監視要素3は、積層方向Aで最も外側の単電池9の1つの電極端子15と、いずれか一方の外部端子16とに電気的に接続されている。   1 and 2, the assembled battery 1 is monitored in a gap or space between the side portion 22C of the assembled battery body 2 (one short side wall 13d of the unit cell 9) and the side wall 7c of the case body 7. A battery monitoring element 3 is arranged. In other words, the battery monitoring element 3 is disposed between the side portion 22 </ b> C extending along the stacking direction A of the assembled battery body 2 and the side wall 7 c of the case body 7. In the present embodiment, the battery monitoring element 3 is fixed to the side portion 22C of the assembled battery body 2. The battery monitoring element 3 includes, for example, a circuit board and a relay unit. The battery monitoring element 3 is electrically connected to one electrode terminal 15 of the outermost cell 9 in the stacking direction A and one of the external terminals 16.
図1及び図2を参照すると、組電池本体2の側部22D(単電池9の他方の短側壁13d)とケース本体7の側壁7dとの間の隙間ないし空間には、緩衝部材4が配置されている。言い換えれば、緩衝部材4は、組電池本体2の積層方向Aに沿って延びる側部22Dと、ケース本体7の側壁7dとの間に配置されている。前述のように、電池監視要素3は組電池本体2の側部22C側に配置されているのに対し、緩衝部材4は側部22Cと対向する側部22D側に配置されている。本実施形態では、緩衝部材4は、外装ケース5とは別体である。緩衝部材4を外装ケース5と別体とすることで、外装ケース5は構造が複雑化せず、容易に製造できる。言い換えれば、例えば外装ケース5に組電池本体2の位置決めのためのリブのような構造を設ける場合と比較すると、外装ケース5と別体の緩衝部材4を設けることで、外装ケース5の構造を複雑化することなく、後述するケース本体7内での組電池本体2の位置ずれの拘束が可能である。   Referring to FIGS. 1 and 2, the buffer member 4 is disposed in the gap or space between the side portion 22 </ b> D (the other short side wall 13 d of the unit cell 9) of the assembled battery body 2 and the side wall 7 d of the case body 7. Has been. In other words, the buffer member 4 is disposed between the side portion 22 </ b> D extending along the stacking direction A of the assembled battery body 2 and the side wall 7 d of the case body 7. As described above, the battery monitoring element 3 is disposed on the side portion 22C side of the assembled battery main body 2, while the buffer member 4 is disposed on the side portion 22D side facing the side portion 22C. In the present embodiment, the buffer member 4 is a separate body from the exterior case 5. By making the buffer member 4 separate from the outer case 5, the outer case 5 can be easily manufactured without complicating the structure. In other words, the structure of the exterior case 5 can be improved by providing the exterior case 5 and the buffer member 4 separately from the case where the exterior case 5 is provided with a structure such as a rib for positioning the assembled battery body 2. Without being complicated, it is possible to restrain the positional deviation of the assembled battery main body 2 in the case main body 7 to be described later.
図3に最も明瞭に示すように、本実施形態における緩衝部材4は、組電池本体2の側部22D上に配置された基部4aと、この基部4aの一方の面からケース本体7の側壁7dに向けて延びる複数の突条部(突部)4bを備える。個々の突条部4bは、矩形断面を有すると共に、図においてZ方向、すなわちケース本体7の底壁7eと蓋体8が対向する方向(本実施形態では積層方向Aと一致する)に延びている。隣接する突条部4bはケース本体7の側壁7a,7bが対向する方向(図においてY方向)に間隔を隔てて配置されている。   As shown most clearly in FIG. 3, the buffer member 4 in the present embodiment includes a base portion 4 a disposed on the side portion 22 </ b> D of the assembled battery body 2, and a side wall 7 d of the case body 7 from one surface of the base portion 4 a. A plurality of protrusions (protrusions) 4b extending toward the surface. Each protrusion 4b has a rectangular cross section and extends in the Z direction in the figure, that is, in the direction in which the bottom wall 7e of the case body 7 and the lid 8 face each other (in the present embodiment, coincides with the stacking direction A). Yes. Adjacent ridges 4b are arranged at intervals in a direction (Y direction in the figure) in which the side walls 7a, 7b of the case body 7 are opposed to each other.
図2に最も明瞭に示すように、緩衝部材4の基部4aの突条部4bが設けられた面とは反対側の面が組電池本体2の側部22Dと当接する。また、個々の突条部4bの先端がケース本体7の側壁7dの内面と当接する。言い換えれば、組電池本体2の側部22Dとケース本体7の側壁7dとの間の隙間ないし空間は、これら側部22Dと側壁7dが対向する方向(図においてX方向)について、緩衝部材4により埋められている。   As shown most clearly in FIG. 2, the surface opposite to the surface on which the protrusion 4 b of the base portion 4 a of the buffer member 4 is in contact with the side portion 22 </ b> D of the assembled battery body 2. Further, the tips of the individual protrusions 4 b come into contact with the inner surface of the side wall 7 d of the case body 7. In other words, the gap or space between the side portion 22D of the assembled battery body 2 and the side wall 7d of the case body 7 is caused by the buffer member 4 in the direction in which the side portion 22D and the side wall 7d face each other (X direction in the drawing). Buried.
本実施形態では、緩衝部材4は絶縁性を有する非多孔質の樹脂製である。緩衝部材4を構成する材料としては、後述するケース本体7内での組電池本体2の位置ずれの拘束が可能な程度の剛性を有するがある程度弾性的な変形可能なものが選択される。また、緩衝部材4を構成する材料は、衝撃吸収性を有する材料であることが好ましい。緩衝部材4は、ゴム、又は多孔質の樹脂(いわゆるスポンジ状の材料)であってもよい。このような材料により緩衝部材4を構成することで、後述するケース本体7内での組電池本体2の位置ずれを効果的に抑制できる。さらに、緩衝部材4を構成する材料は、難燃性であることが好ましく、断熱性を有していてもよい。   In the present embodiment, the buffer member 4 is made of a non-porous resin having insulating properties. As a material constituting the buffer member 4, a material having a rigidity capable of restraining displacement of the assembled battery main body 2 in the case main body 7 to be described later but capable of being elastically deformed to some extent is selected. Moreover, it is preferable that the material which comprises the buffer member 4 is a material which has impact absorption. The buffer member 4 may be rubber or porous resin (so-called sponge-like material). By constituting the buffer member 4 with such a material, it is possible to effectively suppress the displacement of the assembled battery body 2 in the case body 7 described later. Furthermore, it is preferable that the material which comprises the buffer member 4 is a flame retardance, and may have heat insulation.
後に詳述するケース本体7内での組電池本体2の位置ずれ防止に加え、組電池本体2(エンドプレート18及び拘束バンド19を含む)又はケース本体7の内面(前述のように樹脂製であることが好ましい)を緩衝部材4でより効果的に保護するためには、緩衝部材4の剛性が組電池本体2やケース本体7の内面の剛性よりも低いことが好ましい。一方、組電池本体2の位置ずれをより効果的に防止するためには、緩衝部材4の剛性が、外装ケース5のケース本体7の内面の剛性よりも高いことが好ましい。   In addition to preventing the displacement of the assembled battery body 2 in the case body 7 which will be described in detail later, the assembled battery body 2 (including the end plate 18 and the restraining band 19) or the inner surface of the case body 7 (made of resin as described above). In order to more effectively protect the buffer member 4, it is preferable that the rigidity of the buffer member 4 is lower than the rigidity of the inner surfaces of the assembled battery body 2 and the case body 7. On the other hand, in order to prevent the displacement of the assembled battery body 2 more effectively, the rigidity of the buffer member 4 is preferably higher than the rigidity of the inner surface of the case body 7 of the exterior case 5.
本実施形態における緩衝部材4は、前述のように基部4aと複数の突条部4bを有する。しかし、緩衝部材4の形状は、後述するケース本体7内での組電池本体2の位置ずれの拘束が可能である限り、特に限定されない。例えば、緩衝部材4は単なる板状であってもよい。また、緩衝部材4は、使用時に互いに組み付けられる別体の複数の部品から構成されてもよい。さらに、複数個の別体の緩衝部材を組電池本体2の側部22Dとケース本体7の側壁7dとの間の隙間ないし空間に配置してもよい。   The buffer member 4 in this embodiment has the base part 4a and the some protrusion part 4b as mentioned above. However, the shape of the buffer member 4 is not particularly limited as long as the displacement of the assembled battery body 2 in the case body 7 described later can be restrained. For example, the buffer member 4 may be a simple plate. Moreover, the buffer member 4 may be comprised from the separate several components assembled | attached mutually at the time of use. Further, a plurality of separate buffer members may be arranged in a gap or a space between the side portion 22D of the assembled battery body 2 and the side wall 7d of the case body 7.
図1及び図2を参照すると、組電池本体2の側部21B(単電池9の長側壁13a)と蓋体8の頂壁8aとの間の隙間ないし空間には、本実施形態では厚みが一定の板状である緩衝部材24が配置されている。緩衝部材24は、図において下面が組電池本体2の端部21Bと当接し、図において上面が蓋体8の頂壁8aの内面に当接している。言い換えれば、組電池本体2の端部21Bと蓋体8の頂壁8aとの間の隙間ないし空間は、これら側部22Bと頂壁8aが対向する方向(図においてZ方向)について、緩衝部材24により埋められている。本実施形態では、積層方向Aから見たときの緩衝部材24の寸法と形状を、エンドプレート8と概ね同じに設定している。緩衝部材24を構成する材料は、緩衝部材4と同様のものを採用できる。   Referring to FIGS. 1 and 2, the gap or space between the side portion 21 </ b> B (the long side wall 13 a of the unit cell 9) of the assembled battery body 2 and the top wall 8 a of the lid 8 has a thickness in this embodiment. A buffer member 24 having a fixed plate shape is disposed. The lower surface of the buffer member 24 is in contact with the end portion 21B of the assembled battery body 2 in the drawing, and the upper surface is in contact with the inner surface of the top wall 8a of the lid 8 in the drawing. In other words, the gap or space between the end portion 21B of the assembled battery body 2 and the top wall 8a of the lid 8 is a cushioning member in the direction in which the side portion 22B and the top wall 8a face each other (Z direction in the figure). It is filled with 24. In the present embodiment, the size and shape of the buffer member 24 when viewed from the stacking direction A are set to be approximately the same as the end plate 8. The material constituting the buffer member 24 may be the same as that of the buffer member 4.
組電池本体2(本実施形態では側部22D)とケース本体7の周側壁7f(本実施形態では側壁7d)との間の隙間ないし空間を埋める緩衝部材4によって、ケース本体7内での組電池本体2の位置ずれ(特に、図においてX方向の位置ずれ)が拘束される。言い換えれば、緩衝部材4を設けたことで、ケース本体7内での組電池本体2の位置ずれが実質的に許容されない。さらに言い換えれば、緩衝部材4を設けたことで、組電池本体2とケース本体7とが実質的に互いに一体化される。その結果、組電池1の全体としての剛性が向上する。   The assembly in the case body 7 is performed by the buffer member 4 that fills a gap or space between the assembled battery body 2 (side portion 22D in the present embodiment) and the peripheral side wall 7f (side wall 7d in the present embodiment) of the case body 7. The positional deviation of the battery body 2 (particularly, the positional deviation in the X direction in the figure) is constrained. In other words, by providing the buffer member 4, the positional deviation of the assembled battery body 2 within the case body 7 is not substantially allowed. In other words, by providing the buffer member 4, the assembled battery body 2 and the case body 7 are substantially integrated with each other. As a result, the rigidity of the assembled battery 1 as a whole is improved.
組電池1に対し、振動(例えば、車載時の走行振動)や衝撃(例えば、ケース本体7への他の部材の衝突による衝撃)が作用する場合がある。これらの場合でも、緩衝部材4が組電池本体2とケース本体7の周側壁7fとの間の隙間ないしは空間を埋める緩衝部材4により、ケース本体7内での組電池本体2の位置ずれ(特に、図においてX方向の位置ずれ)が拘束される。その結果、組電池1に対して振動や衝撃が加えられた場合でも、ケース本体7内での組電池本体2の位置ずれと、それに起因する組電池1の構成部品の損傷や単電池の損傷を防止できる。つまり、緩衝部材4を設けることで組電池1の耐振動性及び耐衝撃性が向上する。   In some cases, the assembled battery 1 may be subjected to vibration (for example, traveling vibration during vehicle mounting) or impact (for example, impact due to a collision of another member with the case main body 7). Even in these cases, the position of the assembled battery body 2 within the case body 7 (particularly, the buffer member 4 fills a gap or space between the assembled battery body 2 and the peripheral side wall 7f of the case body 7). In the figure, the displacement in the X direction) is constrained. As a result, even when vibration or impact is applied to the assembled battery 1, the positional deviation of the assembled battery body 2 in the case body 7, resulting in damage to the components of the assembled battery 1 or damage to the single battery. Can be prevented. That is, providing the buffer member 4 improves the vibration resistance and impact resistance of the battery pack 1.
ケース本体7の周側壁7fの外側に他の部材が衝突した場合、この衝突による衝撃は緩衝部材4によってある程度吸収される。この点でも、緩衝部材4を設けることで組電池1の耐衝撃性が向上する。   When another member collides with the outside of the peripheral side wall 7 f of the case body 7, the shock due to this collision is absorbed to some extent by the buffer member 4. Also in this respect, the shock resistance of the assembled battery 1 is improved by providing the buffer member 4.
ケース本体7内での組電池本体2の位置ずれ(特に、図においてX方向の位置ずれ)を緩衝部材4により拘束するので、組電池本体2をケース本体7に連結するための特殊な構造や部材を組電池本体2やケース本体7に設ける必要はない。つまり、組電池本体2やケース本体7の構造は複雑化せず、組電池1の構造の簡易性は維持される。   Since the displacement of the assembled battery body 2 in the case body 7 (particularly, the displacement in the X direction in the figure) is restrained by the buffer member 4, a special structure for connecting the assembled battery body 2 to the case body 7 There is no need to provide a member on the assembled battery main body 2 or the case main body 7. That is, the structure of the assembled battery body 2 and the case body 7 is not complicated, and the simplicity of the structure of the assembled battery 1 is maintained.
以上のように、本実施形態の組電池1によれば、組電池本体2とケース本体7の周側壁7fとの間に緩衝部材4が配置されているので、簡易な構成でありながら、組電池1の全体の剛性に加え、組電池1の耐振動性及び耐衝撃性を向上できる。   As described above, according to the assembled battery 1 of the present embodiment, the buffer member 4 is disposed between the assembled battery main body 2 and the peripheral side wall 7f of the case main body 7. In addition to the overall rigidity of the battery 1, the vibration resistance and impact resistance of the assembled battery 1 can be improved.
本実施形態では、緩衝部材4は組電池本体2の側部22D(単電池9の他方の短側壁13d)、すなわち電池監視要素3が配置されている組電池本体2の側部22Cと対向する側部に配置されている。そのため、組電池1に対して振動や衝撃が作用した場合の電池監視要素3への影響を効果的に抑制ないし防止できる。   In the present embodiment, the buffer member 4 faces the side portion 22D (the other short side wall 13d of the unit cell 9) of the assembled battery body 2, that is, the side portion 22C of the assembled battery body 2 on which the battery monitoring element 3 is disposed. Located on the side. Therefore, it is possible to effectively suppress or prevent the influence on the battery monitoring element 3 when vibration or impact is applied to the assembled battery 1.
緩衝部材4を電池監視要素3が配置されている側部22Cと対向する側部22Dに配置しているので、電池監視要素3の回路基板やリレーユニットに一端が接続された導電要素(例えば、バスバーや電線)の配置は、緩衝部材4により妨げられない。特に、電池監視要素4とコネクタ26との間の配線が緩衝部材4により妨げられない。つまり、緩衝部材4を電池監視要素3が配置されている側部22Cと対向する側部22Dに配置することで、電池監視要素3の回路基板やリレーユニットに対する導電要素の配索が容易になる。   Since the buffer member 4 is disposed on the side portion 22D facing the side portion 22C where the battery monitoring element 3 is disposed, a conductive element having one end connected to the circuit board or the relay unit of the battery monitoring element 3 (for example, The arrangement of the bus bars and the electric wires is not hindered by the buffer member 4. In particular, the wiring between the battery monitoring element 4 and the connector 26 is not obstructed by the buffer member 4. That is, by disposing the buffer member 4 on the side portion 22D facing the side portion 22C where the battery monitoring element 3 is disposed, it is easy to route the conductive element to the circuit board or the relay unit of the battery monitoring element 3. .
また、本実施形態では、組電池本体2と蓋体8の頂壁8aとの間の隙間ないし空間に配置した緩衝部材24も、ケース本体7内での組電池本体2の位置ずれ(特に、図においてZ方向の位置ずれ)を拘束する。従って、緩衝部材4に加えて緩衝部材24を設けることで、組電池1の全体の剛性向上と、組電池1の耐振動性及び耐衝撃性向上とをより効果的に実現できる。本実施形態では、積層方向Aから見たときの緩衝部材24の寸法と形状を、エンドプレート8から少しはみ出すように設定し、緩衝部材24により組電池本体2の図においてZ方向の位置ずれを確実に拘束できる。積層方向Aから見たときの緩衝部材24の寸法と形状をエンドプレート8よりも十分大きく設定してもよい。この場合、制御機器4とコネクタ26との間の配線を妨げないように、緩衝部材24に必要に応じて配線のための孔や切欠を設けることが好ましい。   In the present embodiment, the buffer member 24 disposed in the gap or space between the assembled battery main body 2 and the top wall 8a of the lid body 8 is also displaced in the position of the assembled battery main body 2 in the case main body 7 (particularly, In the figure, the displacement in the Z direction) is constrained. Therefore, by providing the buffer member 24 in addition to the buffer member 4, the overall rigidity of the assembled battery 1 and the vibration resistance and impact resistance of the assembled battery 1 can be improved more effectively. In the present embodiment, the size and shape of the buffer member 24 when viewed from the stacking direction A are set so as to slightly protrude from the end plate 8, and the position shift in the Z direction in the drawing of the assembled battery body 2 is performed by the buffer member 24. It can be restrained reliably. The size and shape of the buffer member 24 when viewed from the stacking direction A may be set sufficiently larger than the end plate 8. In this case, it is preferable that a hole or a notch for wiring is provided in the buffer member 24 as necessary so as not to disturb the wiring between the control device 4 and the connector 26.
前述のように、本実施形態における外装ケース5(ケース本体7と蓋体8)は樹脂製であるので、振動や衝撃に起因して組電池本体2が干渉することで外装ケース5が比較的損傷し易い。緩衝部材4,24を設けることで、比較的損傷しやすい外装ケース5を組電池本体2との干渉から効果的に保護できる。   As described above, the exterior case 5 (the case body 7 and the lid body 8) in the present embodiment is made of resin. Therefore, the exterior battery case 5 is comparatively caused by interference of the assembled battery body 2 due to vibration or impact. Easy to damage. By providing the buffer members 4 and 24, it is possible to effectively protect the outer case 5 that is relatively easily damaged from interference with the assembled battery body 2.
前述のように、本実施形態における緩衝部材4は、間隔を隔てて配置された複数の突条部4bを備える。これらの突条部4bを設けたことで、緩衝部材4の周側壁7f(本実施形態では側壁7d)と対向する部分の表面積は、緩衝部材4が単なる板状である場合と比較して十分大きい。そのため、例えば充放電時に組電池本体2の単電池9で発生した熱は、緩衝部材4を介して効果的に放熱される。つまり、本実施形態における緩衝部材4は、前述の組電池本体2の位置ずれを拘束する機能に加え、単電池9の放熱性を向上する機能を有する。   As described above, the shock-absorbing member 4 in the present embodiment includes a plurality of ridges 4b arranged at intervals. By providing these protrusions 4b, the surface area of the portion facing the peripheral side wall 7f (side wall 7d in the present embodiment) of the buffer member 4 is sufficient as compared with the case where the buffer member 4 has a simple plate shape. large. Therefore, for example, the heat generated in the unit cell 9 of the assembled battery body 2 during charging and discharging is effectively radiated through the buffer member 4. That is, the buffer member 4 in the present embodiment has a function of improving the heat dissipation of the unit cell 9 in addition to the function of restraining the positional deviation of the assembled battery body 2 described above.
緩衝部材4は、組電池本体2の側部22D(単電池9の他方の短側壁13d)とケース本体7の側壁7dとの間に配置されている。この側部22Dには、拘束バンド19も配置されている。このように拘束バンド19が配置された側部22Dに緩衝部材を配置することで、振動や衝撃が作用した際に拘束バンド19とケース本体7の側壁7dが衝突ないし干渉するのを効果的に防止できる。   The buffer member 4 is disposed between the side portion 22D of the assembled battery body 2 (the other short side wall 13d of the unit cell 9) and the side wall 7d of the case body 7. A restraining band 19 is also disposed on the side portion 22D. By disposing the buffer member on the side portion 22D where the restraint band 19 is placed in this way, it is possible to effectively prevent the restraint band 19 and the side wall 7d of the case body 7 from colliding or interfering when a vibration or impact is applied. Can be prevented.
いずれも組電池本体2を構成する単電池9を拘束するための拘束部材であるエンドプレート18と拘束バンド19とを比較すると、拘束バンド19はエンドプレート18よりも幅が狭く細長い形状である。そのため、仮に拘束バンド19がケース本体7の内面と衝突ないし干渉すると、エンドプレート18の場合よりもケース本体7の内面の損傷が生じやすい。本実施形態では、拘束バンド19とケース本体7の側壁7dとの間に緩衝部材4を介在させることで、拘束バンド19の衝突ないし緩衝によるケース本体7の側壁7dの損傷を確実に防止している。 In any case, when the end plate 18 that is a restraining member for restraining the unit cell 9 constituting the assembled battery body 2 and the restraining band 19 are compared, the restraining band 19 is narrower and narrower than the end plate 18. Therefore, if the restraint band 19 collides with or interferes with the inner surface of the case body 7, the inner surface of the case body 7 is more easily damaged than the end plate 18. In the present embodiment, the buffer member 4 is interposed between the restraining band 19 and the side wall 7d of the case main body 7 to reliably prevent the side wall 7d of the case main body 7 from being damaged due to collision or buffering of the restraining band 19. Yes.
外装ケースのケース本体7の開口6から組電池本体2を挿入する際にも、緩衝部材4がケース本体7と拘束バンド19との間に介在することで、ケース本体7の側壁7dに対する拘束バンド19の干渉とそれに起因する側壁7dの損傷を防止できる。   Even when the assembled battery main body 2 is inserted from the opening 6 of the case main body 7 of the exterior case, the buffer member 4 is interposed between the case main body 7 and the constraining band 19 so that the constraining band for the side wall 7d of the case main body 7 is obtained. It is possible to prevent 19 interference and damage to the side wall 7d resulting therefrom.
緩衝部材4は、組電池本体2の側部22D(単電池9の他方の短側壁13d)とケース本体7の側壁7dとの間に配置されている。緩衝部材24は、組電池本体2の側部21B(単電池9の長側壁13a)と蓋体8との間に配置されている。つまり、本実施形態では、いずれの緩衝部材4,24も、組電池本体2の側部22B(単電池9の蓋体14)と外装ケース5との間には配置されていない。単電池9の蓋体14には、電極端子15と安全弁27が設けられている。組電池本体2の電極端子15が設けられた側部22Bに緩衝部材4,24を配置していないので、緩衝部材4,24は電極端子15への配線の妨げとならない。また、組電池本体2の安全弁27が設けられた側部22Bに監視用部材4,24を配置していないので、緩衝部材4,24は安全弁27の開弁時に単電池9の容器11からのガスの排出を妨げない。   The buffer member 4 is disposed between the side portion 22D of the assembled battery body 2 (the other short side wall 13d of the unit cell 9) and the side wall 7d of the case body 7. The buffer member 24 is disposed between the side portion 21 </ b> B (the long side wall 13 a of the unit cell 9) of the assembled battery body 2 and the lid 8. That is, in this embodiment, none of the buffer members 4, 24 is arranged between the side portion 22 </ b> B (the lid body 14 of the unit cell 9) of the assembled battery body 2 and the outer case 5. The lid 14 of the unit cell 9 is provided with an electrode terminal 15 and a safety valve 27. Since the buffer members 4 and 24 are not disposed on the side portion 22B of the assembled battery body 2 where the electrode terminals 15 are provided, the buffer members 4 and 24 do not hinder wiring to the electrode terminals 15. Further, since the monitoring members 4 and 24 are not disposed on the side portion 22B of the assembled battery main body 2 where the safety valve 27 is provided, the buffer members 4 and 24 are separated from the container 11 of the cell 9 when the safety valve 27 is opened. Does not interfere with gas discharge.
以下、本発明の第2から第11実施形態を説明する。これらの実施形態に関する図面では、第1実施形態と同一又は同様の要素には同一の符号を付している。また、これらの実施形態に関し、特に言及しない構成及び機能は、第1実施形態と同様である。   Hereinafter, second to eleventh embodiments of the present invention will be described. In the drawings relating to these embodiments, the same or similar elements as those in the first embodiment are denoted by the same reference numerals. In addition, regarding these embodiments, configurations and functions not particularly mentioned are the same as those in the first embodiment.
(第2実施形態)
図5は、本発明の第2実施形態に係る組電池1を示す。
(Second Embodiment)
FIG. 5 shows an assembled battery 1 according to the second embodiment of the present invention.
本実施形態では、電池監視要素3は、組電池本体2の緩衝部材4を配置した側部22Dに配置されている。具体的には、緩衝部材4のケース本体7の側壁7dと対向する面に窪み4aが設けられ、この窪み4aに電池監視要素3が配置されている。窪み4eは電池本体2側に底部を有するが、ケース本体7の側壁7d側は開口している。この開口を除き、電池監視要素3の周囲を緩衝部材4に取り囲んでいる。そのため、外部より組電池1に対して加えられる振動や衝撃から電池監視要素3を効果的に保護できる。特に、組電池本体2の側部22Dと電池監視要素3との間に、緩衝部材4が介在しているので、振動や衝撃が作用した際にも、電池監視要素3が組電池本体2の側部22Dに干渉するのを確実に防止できる。   In the present embodiment, the battery monitoring element 3 is disposed on the side portion 22D where the buffer member 4 of the assembled battery body 2 is disposed. Specifically, a recess 4a is provided on the surface of the buffer member 4 facing the side wall 7d of the case body 7, and the battery monitoring element 3 is disposed in the recess 4a. The recess 4e has a bottom on the battery body 2 side, but the side wall 7d side of the case body 7 is open. Except for this opening, the battery monitoring element 3 is surrounded by a buffer member 4. Therefore, the battery monitoring element 3 can be effectively protected from vibration and impact applied to the assembled battery 1 from the outside. In particular, since the buffer member 4 is interposed between the side portion 22D of the assembled battery main body 2 and the battery monitoring element 3, the battery monitoring element 3 is attached to the assembled battery main body 2 even when vibration or impact is applied. Interference with the side portion 22D can be reliably prevented.
緩衝部材4の窪み4eはケース本体7の側壁7d側が開口しているので、電池監視要素3の回路基板やリレーユニットに一端が接続された導電要素の配置は、緩衝部材4により妨げられない。特に、電池監視要素4とコネクタ26との間の配線が緩衝部材4により妨げられない。つまり、窪み4eの開口が電池監視要素4へ接続される導電要素を配索するための連通部として機能する。   Since the recess 4 e of the buffer member 4 is open on the side wall 7 d side of the case body 7, the arrangement of the conductive element having one end connected to the circuit board or the relay unit of the battery monitoring element 3 is not hindered by the buffer member 4. In particular, the wiring between the battery monitoring element 4 and the connector 26 is not obstructed by the buffer member 4. That is, the opening of the recess 4 e functions as a communication portion for routing the conductive element connected to the battery monitoring element 4.
電池監視要素3は、組電池本体2の緩衝部材4を配置した側部22Dに配置されている。つまり、電池監視要素3と緩衝部材4は組電池本体2の同じ側部22Dに配置されている。そのため、組電池本体2、緩衝部材4、及び電池監視要素3からなるユニットを小型化し、外装ケース5内のスペースを有効利用できる。   The battery monitoring element 3 is disposed on the side portion 22D of the assembled battery body 2 where the buffer member 4 is disposed. That is, the battery monitoring element 3 and the buffer member 4 are disposed on the same side portion 22D of the assembled battery body 2. Therefore, the unit consisting of the assembled battery body 2, the buffer member 4, and the battery monitoring element 3 can be downsized, and the space in the outer case 5 can be effectively used.
(第3実施形態)
図6は、本発明の第3実施形態に係る組電池1を示す。
(Third embodiment)
FIG. 6 shows an assembled battery 1 according to the third embodiment of the present invention.
本実施形態では、緩衝部材4内に電池監視要素3が収容されている。具体的には、緩衝部材4は概ね板状ないし矩形状であり、内部に空間部4cが形成されている。この空間部4cに電池監視要素3が収容されている。電池監視要素3の周囲の概ね全体を緩衝部材4に取り囲んでいる。そのため、外部より組電池1に対して加えられる衝撃から電池監視要素3を保護できると共に、電池監視要素3に含まれる回路基板やリレーユニットの絶縁性を向上できる。特に、特に、組電池本体2の側部22Dと電池監視要素3との間に、緩衝部材4が介在しているので、振動や衝撃が作用した際にも、電池監視要素3が組電池本体2の側部22Dに干渉するのを確実に防止できる。   In the present embodiment, the battery monitoring element 3 is accommodated in the buffer member 4. Specifically, the buffer member 4 is generally plate-shaped or rectangular, and a space 4c is formed inside. The battery monitoring element 3 is accommodated in the space 4c. The buffer member 4 surrounds almost the entire periphery of the battery monitoring element 3. Therefore, the battery monitoring element 3 can be protected from an impact applied to the assembled battery 1 from the outside, and the insulation of the circuit board and the relay unit included in the battery monitoring element 3 can be improved. In particular, since the buffer member 4 is interposed between the side portion 22D of the assembled battery body 2 and the battery monitoring element 3, the battery monitoring element 3 is also attached to the assembled battery body even when vibration or impact is applied. Interference with the second side portion 22D can be reliably prevented.
緩衝部材4には、空間部4cから緩衝部材4の外面まで連通する連通部4dが設けられている。連通部4dは、溝であってもよいし、貫通孔であってもよい。緩衝部材4の空間部4cに収容された電池監視要素3の回路基板やリレーユニットに一端が接続された導電要素(例えば、バスバーや電線)は連通部4dを通すことで、緩衝部材4の外部まで容易に引き出すことができる。特に、電池監視要素4とコネクタ26との間の配線が緩衝部材4により妨げられない。つまり、連通部4dを設けることで、空間部4cに収容された電池監視要素3の回路基板やリレーユニットに対する導電要素の配索が容易になる。   The buffer member 4 is provided with a communication portion 4 d that communicates from the space portion 4 c to the outer surface of the buffer member 4. The communication part 4d may be a groove or a through hole. A conductive element (for example, a bus bar or an electric wire) having one end connected to a circuit board or a relay unit of the battery monitoring element 3 housed in the space 4c of the buffer member 4 passes through the communication portion 4d, so that the outside of the buffer member 4 Can be pulled out easily. In particular, the wiring between the battery monitoring element 4 and the connector 26 is not obstructed by the buffer member 4. That is, by providing the communication part 4d, it is easy to route the conductive element to the circuit board or the relay unit of the battery monitoring element 3 accommodated in the space part 4c.
電池監視要素3は、組電池本体2の緩衝部材4を配置した側部22Dに配置されている。つまり、電池監視要素3と緩衝部材4は組電池本体2の同じ側部22Dに配置されている。そのため、組電池本体2、緩衝部材4、及び電池監視要素3からなるユニットを小型化し、外装ケース5内のスペースを有効利用できる。   The battery monitoring element 3 is disposed on the side portion 22D of the assembled battery body 2 where the buffer member 4 is disposed. That is, the battery monitoring element 3 and the buffer member 4 are disposed on the same side portion 22D of the assembled battery body 2. Therefore, the unit consisting of the assembled battery body 2, the buffer member 4, and the battery monitoring element 3 can be downsized, and the space in the outer case 5 can be effectively used.
(第4実施形態)
図7は、本発明の第4実施形態に係る組電池1を示す。
(Fourth embodiment)
FIG. 7 shows an assembled battery 1 according to the fourth embodiment of the present invention.
緩衝部材4は第1実施形態と同様の構造を有し、組電池本体2の側部22Dとケース本体7の側壁7dとの間の隙間ないし空間に配置されている。また、組電池本体2の側部22Cとケース本体7の側壁7cとの間の隙間ないし空間には別の緩衝部材25が配置されている。   The buffer member 4 has the same structure as that of the first embodiment, and is disposed in a gap or a space between the side portion 22D of the assembled battery body 2 and the side wall 7d of the case body 7. Further, another buffer member 25 is disposed in the gap or space between the side portion 22C of the assembled battery body 2 and the side wall 7c of the case body 7.
緩衝部材25には第2実施形態と同様の窪み25cが形成され、この窪み25cに電池監視要素3が配置されている。窪み25eは電池本体2側に底部を有するが、ケース本体7の側壁7c側は開口している。   The buffer member 25 is formed with a recess 25c similar to that of the second embodiment, and the battery monitoring element 3 is disposed in the recess 25c. The recess 25e has a bottom on the battery body 2 side, but the side wall 7c side of the case body 7 is open.
組電池本体2の互いに対向する側部22C,22Dの両方に緩衝部材4,25を配置することで、ケース本体7内での組電池本体2の位置ずれ(特に図においてX方向の位置ずれ)をより確実に拘束できる。   Displacement of the assembled battery body 2 within the case body 7 (particularly displacement in the X direction in the figure) by disposing the buffer members 4 and 25 on both side portions 22C and 22D of the assembled battery body 2 facing each other. Can be restrained more reliably.
ケース本体7の側壁7c側の開口を除き、電池監視要素3の周囲を緩衝部材25に取り囲んでいる。特に、組電池本体2の側部22Cと電池監視要素3との間に、緩衝部材25が介在している。そのため、外部より組電池1に対して加えられる振動や衝撃から電池監視要素3を効果的に保護できる。   The battery monitoring element 3 is surrounded by a buffer member 25 except for the opening on the side wall 7 c side of the case body 7. In particular, the buffer member 25 is interposed between the side portion 22 </ b> C of the assembled battery body 2 and the battery monitoring element 3. Therefore, the battery monitoring element 3 can be effectively protected from vibration and impact applied to the assembled battery 1 from the outside.
緩衝部材25の窪み25cはケース本体7の側壁7c側が開口しているので、電池監視要素3の回路基板やリレーユニットに一端が接続された導電要素の配置は、緩衝部材25により妨げられない。   Since the recess 25c of the buffer member 25 is opened on the side wall 7c side of the case body 7, the arrangement of the conductive element having one end connected to the circuit board or the relay unit of the battery monitoring element 3 is not hindered by the buffer member 25.
(第5実施形態)
図8は、本発明の第5実施形態に係る組電池1を示す。
(Fifth embodiment)
FIG. 8 shows an assembled battery 1 according to the fifth embodiment of the present invention.
緩衝部材4は第1実施形態と同様の構造を有し、組電池本体2の側部22Dとケース本体7の側壁7dとの間の隙間ないし空間に配置されている。また、組電池本体2の側部22Cとケース本体7の側壁7cとの間の隙間ないし空間には別の緩衝部材25が配置されている。緩衝部材25は、電池監視要素3が収容された空間部25aと、この空間部25aと第3緩衝部材の外面を連通させる連通部25bが設けられている。   The buffer member 4 has the same structure as that of the first embodiment, and is disposed in a gap or a space between the side portion 22D of the assembled battery body 2 and the side wall 7d of the case body 7. Further, another buffer member 25 is disposed in the gap or space between the side portion 22C of the assembled battery body 2 and the side wall 7c of the case body 7. The buffer member 25 is provided with a space portion 25a in which the battery monitoring element 3 is accommodated, and a communication portion 25b that connects the space portion 25a and the outer surface of the third buffer member.
組電池本体2の互いに対向する側部22C,22Dの両方に緩衝部材4,25を配置することで、ケース本体7内での組電池本体2の位置ずれ(特に図においてX方向の位置ずれ)をより確実に拘束できる。   Displacement of the assembled battery body 2 within the case body 7 (particularly displacement in the X direction in the figure) by disposing the buffer members 4 and 25 on both side portions 22C and 22D of the assembled battery body 2 facing each other. Can be restrained more reliably.
電池監視要素3の周囲の概ね全体を緩衝部材25で取り囲んでいる。そのため、外部より組電池1に対して加えられる衝撃から電池監視要素3を保護できると共に、電池監視要素3に含まれる回路基板やリレーユニットの絶縁性を向上できる。特に、特に、組電池本体2の側部22Cと電池監視要素3との間に、緩衝部材25が介在しているので、振動や衝撃が作用した際にも、電池監視要素3が組電池本体2の側部22Cに干渉するのを確実に防止できる。   A buffer member 25 surrounds substantially the entire periphery of the battery monitoring element 3. Therefore, the battery monitoring element 3 can be protected from an impact applied to the assembled battery 1 from the outside, and the insulation of the circuit board and the relay unit included in the battery monitoring element 3 can be improved. In particular, since the buffer member 25 is interposed between the side portion 22C of the assembled battery main body 2 and the battery monitoring element 3, the battery monitoring element 3 is also connected to the assembled battery main body even when vibration or impact is applied. Interference with the second side portion 22C can be reliably prevented.
緩衝部材25には連通部25bを設けているので、電池監視要素3の回路基板やリレーユニットに一端が接続された導電要素の配置は、緩衝部材25により妨げられない。   Since the buffer member 25 is provided with the communication portion 25b, the arrangement of the conductive element having one end connected to the circuit board or the relay unit of the battery monitoring element 3 is not hindered by the buffer member 25.
(第6実施形態)
図9から図12は、本発明の第6実施形態に係る組電池1を示す。
(Sixth embodiment)
9 to 12 show an assembled battery 1 according to a sixth embodiment of the present invention.
組電池本体2の側部22D(単電池9の他方の短側壁13d)とケース本体7の側壁7dとの間に配置された緩衝部材4に2個の放熱部材35が配置されている。具体的には、緩衝部材4の基部4aのケース本体7の側壁7dと対向する面の突条部4bで挟まれた2個の領域に、それぞれ放熱部材35が配置されている。放熱部材35は、例えばアルミニウムのような熱伝導性の良好な材料からなる。   Two heat dissipating members 35 are disposed on the buffer member 4 disposed between the side portion 22D of the assembled battery body 2 (the other short side wall 13d of the unit cell 9) and the side wall 7d of the case body 7. Specifically, the heat radiating members 35 are respectively disposed in two regions sandwiched between the protrusions 4 b on the surface of the base 4 a of the buffer member 4 that faces the side wall 7 d of the case body 7. The heat radiating member 35 is made of a material having good thermal conductivity such as aluminum.
放熱部材35は、緩衝部材4の基部4aに沿って延びる矩形板状の基部35aを備える。基部35aのケース本体7の側壁7dと対向する面には、複数の突条部35bが設けられている。個々の突条部35bは、矩形断面を有すると共に、図においてZ方向、に延びている。隣接する突条部35bは、図においてY方向に間隔を隔てて配置されている。   The heat dissipating member 35 includes a rectangular plate-like base portion 35 a extending along the base portion 4 a of the buffer member 4. A plurality of protrusions 35b are provided on the surface of the base portion 35a facing the side wall 7d of the case body 7. Each protrusion 35b has a rectangular cross section and extends in the Z direction in the drawing. Adjacent ridges 35b are arranged at an interval in the Y direction in the figure.
図12に最も明瞭に示すように、基部35aの組電池本体2の側部22Dと対向する面には、4個の単電池9に対応して4個の短柱部35cが設けられている。個々の短柱部35cは緩衝部材4の形成された貫通孔4fに挿入されて単電池9(本実施形態では容器本体13の短側壁13d)に向けて延びている。貫通孔4f内には、個々の単電池9を覆う絶縁シート29と短柱部35cの先端との隙間に、熱伝導部材36が配置されている。熱伝導部材36は、絶縁性を有することがより好ましい。   As shown most clearly in FIG. 12, four short column portions 35 c are provided on the surface of the base portion 35 a facing the side portion 22 </ b> D of the assembled battery body 2 so as to correspond to the four unit cells 9. . Each short column portion 35c is inserted into the through hole 4f in which the buffer member 4 is formed, and extends toward the unit cell 9 (in this embodiment, the short side wall 13d of the container body 13). In the through hole 4f, a heat conducting member 36 is disposed in a gap between the insulating sheet 29 covering each single cell 9 and the tip of the short column portion 35c. It is more preferable that the heat conducting member 36 has an insulating property.
放熱部材35は、間隔を隔てて配置された複数の突条部35bを設けたことで、表面積を十分大きく設定している。そのため、単電池9から熱伝導部材36を介して短柱部35cに伝わった熱は、放熱部材35で効果的に放熱される。特に、放熱部材35は短柱部35cを介して個々の単電池9と熱的に結合されているので、高効率での放熱が可能である。   The heat dissipating member 35 has a sufficiently large surface area by providing a plurality of protrusions 35b arranged at intervals. Therefore, the heat transferred from the unit cell 9 to the short column portion 35 c via the heat conducting member 36 is effectively radiated by the heat radiating member 35. In particular, since the heat dissipating member 35 is thermally coupled to the individual cells 9 via the short column portion 35c, it is possible to dissipate heat with high efficiency.
熱伝導性の絶縁材30を設けることは、単電池9と放熱部材35の間の絶縁性を高める上で好ましいが、必要な絶縁性を確保できるのであれば、熱伝導部材36を設けずに、単電池9を覆う絶縁シート29に短柱部35cの先端を直接接触させてもよい。また、効果的な放熱を実現できる限り、放熱部材35の材質、形状、寸法、及び緩衝部材4に配置する位置は、図示の例に限定されない。   Providing the heat conductive insulating material 30 is preferable for improving the insulation between the unit cell 9 and the heat radiating member 35, but if the necessary insulation can be ensured, the heat conductive member 36 is not provided. The tip of the short column portion 35 c may be brought into direct contact with the insulating sheet 29 that covers the unit cell 9. Moreover, as long as effective heat dissipation is realizable, the material of the heat radiating member 35, a shape, a dimension, and the position arrange | positioned in the buffer member 4 are not limited to the example of illustration.
(第7実施形態)
図13及び図14は、本発明の第7実施形態に係る組電池1を示す。
(Seventh embodiment)
13 and 14 show an assembled battery 1 according to a seventh embodiment of the present invention.
図4も併せて参照すると、本実施形態における組電池本体2は、第1実施形態と同様の姿勢、すなわち単電池9の積層方向Aが、図において上下方向となる姿勢、すなわちケース本体7の底壁7eと蓋体8の対向方向と一致する姿勢で、ケース本体7内に収容されている。   Referring also to FIG. 4, the assembled battery body 2 in the present embodiment has the same posture as in the first embodiment, that is, the posture in which the stacking direction A of the cells 9 is the vertical direction in the drawing, that is, the case body 7. The case body 7 is accommodated in a posture that matches the facing direction of the bottom wall 7 e and the lid 8.
組電池本体2の側部22A(単電池9の底壁13a)とケース本体7の側壁7cとの間の隙間ないし空間に、電池監視要素3が配置されている。また、組電池本体2の側部22B(単電池9の蓋体14)とケース本体7の側壁7dとの間の隙間ないし空間に、第1実施形態と同様の緩衝部材4が配置されている。   The battery monitoring element 3 is disposed in a gap or space between the side portion 22A of the assembled battery main body 2 (the bottom wall 13a of the unit cell 9) and the side wall 7c of the case main body 7. In addition, a buffer member 4 similar to that of the first embodiment is disposed in a gap or a space between the side portion 22B of the battery pack body 2 (the lid 14 of the unit cell 9) and the side wall 7d of the case body 7. .
緩衝部材4によりケース本体7内での組電池本体2の位置ずれ(特に、図においてX方向の位置ずれ)を拘束することで、簡易な構成でありながら、組電池1の全体としての剛性に加え、組電池1の耐振動性及び耐衝撃性を向上できる。   By restraining the positional deviation (particularly, the positional deviation in the X direction in the figure) of the assembled battery main body 2 within the case main body 7 by the buffer member 4, the overall rigidity of the assembled battery 1 can be improved while having a simple configuration. In addition, the vibration resistance and impact resistance of the assembled battery 1 can be improved.
(第8実施形態)
図15及び図16は、本発明の第8実施形態に係る組電池1を示す。
(Eighth embodiment)
15 and 16 show an assembled battery 1 according to the eighth embodiment of the present invention.
図4も併せて参照すると、組電池本体2は、側部22A(単電池9の底壁13a)がケース本体7の底壁7eと対向し、側部22B(単電池9の蓋体14)が蓋体8及び開口6と対向する姿勢で、ケース本体7内に収容されている。言い換えれば、組電池本体2は、単電池9の一対の電極端子15が対向する方向Cが、ケース本体7の底壁7eに沿って延びる姿勢、具体的には図においてX方向に延びる姿勢で、ケース本体7内に収容されている。   Referring also to FIG. 4, the assembled battery body 2 has a side portion 22A (the bottom wall 13a of the cell 9) facing the bottom wall 7e of the case body 7 and a side portion 22B (the lid 14 of the cell 9). Is accommodated in the case body 7 in a posture facing the lid body 8 and the opening 6. In other words, the assembled battery main body 2 has a posture in which the direction C in which the pair of electrode terminals 15 of the unit cell 9 faces each other extends along the bottom wall 7e of the case main body 7, specifically in the posture extending in the X direction in the drawing. The case body 7 is accommodated.
組電池本体2の側部22C(単電池9の一方の短側壁13d)とケース本体7の側壁7cとの間の隙間ないし空間に、電池監視要素3が配置されている。また、組電池本体2の側部22D(単電池9の他方の短側壁13d)とケース本体7の側壁7dとの間の隙間ないし空間に、第1実施形態と同様の緩衝部材4が配置されている。   The battery monitoring element 3 is disposed in a gap or space between the side portion 22C of the assembled battery body 2 (one short side wall 13d of the unit cell 9) and the side wall 7c of the case body 7. Further, a buffer member 4 similar to that of the first embodiment is disposed in a gap or a space between the side portion 22D of the battery pack body 2 (the other short side wall 13d of the unit cell 9) and the side wall 7d of the case body 7. ing.
緩衝部材4によりケース本体7内での組電池本体2の位置ずれ(特に、図においてX方向の位置ずれ)を拘束することで、簡易な構成でありながら、組電池1の全体としての剛性に加え、組電池1の耐振動性及び耐衝撃性を向上できる。   By restraining the positional deviation (particularly, the positional deviation in the X direction in the figure) of the assembled battery main body 2 within the case main body 7 by the buffer member 4, the overall rigidity of the assembled battery 1 can be improved while having a simple configuration. In addition, the vibration resistance and impact resistance of the assembled battery 1 can be improved.
(第9実施形態)
図17及び図18は、本発明の第9実施形態に係る組電池1を示す。
(Ninth embodiment)
17 and 18 show an assembled battery 1 according to the ninth embodiment of the present invention.
図4も併せて参照すると、組電池本体2は、第8実施形態と同様に、単電池9の一対の電極端子15が対向する方向Cが、ケース本体7の底壁7eに沿って延びる姿勢で、ケース本体7内に収容されている。   Referring also to FIG. 4, as in the eighth embodiment, the assembled battery main body 2 is configured such that the direction C in which the pair of electrode terminals 15 of the unit cell 9 face each other extends along the bottom wall 7 e of the case main body 7. Thus, it is accommodated in the case body 7.
組電池本体2の端部21A(積層方向Aの一端側の単電池9の長側壁13c)とケース本体7の側壁7cとの間の隙間ないし空間に、電池監視要素3が配置されている。また、組電池本体2の端部21B(積層方向Aの他端側の単電池9の長側壁13c)とケース本体7の側壁7dとの間の隙間ないし空間に、第1実施形態と同様の緩衝部材4が配置されている。   The battery monitoring element 3 is arranged in a gap or a space between the end portion 21A of the assembled battery body 2 (the long side wall 13c of the unit cell 9 on one end side in the stacking direction A) and the side wall 7c of the case body 7. Further, in the gap or space between the end portion 21B of the assembled battery body 2 (the long side wall 13c of the unit cell 9 on the other end side in the stacking direction A) and the side wall 7d of the case body 7, the same as in the first embodiment. The buffer member 4 is arranged.
(第10実施形態)
図19及び図20は、本発明の第10実施形態に係る組電池1を示す。
(10th Embodiment)
19 and 20 show an assembled battery 1 according to a tenth embodiment of the present invention.
図4も併せて参照すると、組電池本体2は、側部22C(単電池9の一方の短側壁13d)がケース本体7の底壁7eと対向し、側部22D(単電池9の他方の短側壁13d)が蓋体8及び開口6と対向する姿勢で、ケース本体7内に収容されている。言い換えれば、組電池本体2は、単電池9の一対の電極端子15が対向する方向Cが、ケース本体7の底壁7eと蓋体8及び開口6とが対向する方向、具体的には図においてZ方向と一致する姿勢で、ケース本体7内に収容されている。   Referring also to FIG. 4, the assembled battery body 2 has a side portion 22C (one short side wall 13d of the cell 9) facing the bottom wall 7e of the case body 7 and a side portion 22D (the other side of the cell 9). The short side wall 13 d) is accommodated in the case body 7 in a posture facing the lid body 8 and the opening 6. In other words, in the assembled battery body 2, the direction C in which the pair of electrode terminals 15 of the unit cell 9 faces is the direction in which the bottom wall 7 e of the case body 7 faces the lid 8 and the opening 6, specifically, FIG. In the case body 7 in a posture that coincides with the Z direction.
組電池本体2の側部22A(単電池9の底壁13a)とケース本体7の側壁7cとの間の隙間ないし空間に、電池監視要素3が配置されている。また、組電池本体2の側部22B(単電池9の蓋体14)とケース本体7の側壁7dとの間の隙間ないし空間に、第1実施形態と同様の緩衝部材4が配置されている。   The battery monitoring element 3 is disposed in a gap or space between the side portion 22A of the assembled battery main body 2 (the bottom wall 13a of the unit cell 9) and the side wall 7c of the case main body 7. In addition, a buffer member 4 similar to that of the first embodiment is disposed in a gap or a space between the side portion 22B of the battery pack body 2 (the lid 14 of the unit cell 9) and the side wall 7d of the case body 7. .
緩衝部材4によりケース本体7内での組電池本体2の位置ずれ(特に、図においてX方向の位置ずれ)を拘束することで、簡易な構成でありながら、組電池1の全体としての剛性に加え、組電池1の耐振動性及び耐衝撃性を向上できる。   By restraining the positional deviation (particularly, the positional deviation in the X direction in the figure) of the assembled battery main body 2 within the case main body 7 by the buffer member 4, the overall rigidity of the assembled battery 1 can be improved while having a simple configuration. In addition, the vibration resistance and impact resistance of the assembled battery 1 can be improved.
(第11実施形態)
図21及び図22は、本発明の第11実施形態に係る組電池1を示す。
(Eleventh embodiment)
21 and 22 show an assembled battery 1 according to an eleventh embodiment of the present invention.
図4も併せて参照すると、組電池本体2は、第10実施形態と同様に、単電池9の一対の電極端子15が対向する方向Cが、ケース本体7の底壁7eと蓋体8及び開口6とが対向する方向と一致する姿勢で、ケース本体7内に収容されている。   Referring also to FIG. 4, the assembled battery body 2 is similar to the tenth embodiment in that the direction C in which the pair of electrode terminals 15 of the unit cell 9 face each other is the bottom wall 7e of the case body 7 and the lid body 8. It is accommodated in the case body 7 in a posture that matches the direction in which the opening 6 faces.
組電池本体2の端部21A(積層方向Aの一端側の単電池9の長側壁13c)とケース本体7の側壁7cとの間の隙間ないし空間に、電池監視要素3が配置されている。また、組電池本体2の端部21B(積層方向Aの他端側の単電池9の長側壁13c)とケース本体7の側壁7dとの間の隙間ないし空間に、第1実施形態と同様の緩衝部材4が配置されている。   The battery monitoring element 3 is arranged in a gap or a space between the end portion 21A of the assembled battery body 2 (the long side wall 13c of the unit cell 9 on one end side in the stacking direction A) and the side wall 7c of the case body 7. Further, in the gap or space between the end portion 21B of the assembled battery body 2 (the long side wall 13c of the unit cell 9 on the other end side in the stacking direction A) and the side wall 7d of the case body 7, the same as in the first embodiment. The buffer member 4 is arranged.
本発明のその他の変形例ないし代案は、以下を含む。   Other modifications or alternatives of the present invention include the following.
緩衝部材4は、組電池本体2とケース本体7の周側壁7fとの間の隙間に充填した接着剤硬化させることで形成してもよい。接着剤としては、例えば、エラストマー系接着剤、シリコーン系接着剤、又はエポキシ系接着剤等が用いられる。   The buffer member 4 may be formed by curing the adhesive filled in the gap between the assembled battery body 2 and the peripheral side wall 7 f of the case body 7. As the adhesive, for example, an elastomer-based adhesive, a silicone-based adhesive, an epoxy-based adhesive, or the like is used.
緩衝部材4は温度上昇に伴い膨張する性質を有する材料から構成してもよい。また、緩衝部材4は気体又は液体が充填された袋体であってもよい。この場合、外装ケース5のケース本体7に組電池本体2と袋体(気体又は液体は未充填)を収容した後、袋体に気体又は液体を充填して袋体に緩衝部材4として要求される剛性を与えることができる。さらに、緩衝部材4は発泡性の材料により構成してもよい。この場合、外装ケース5のケース本体7に組電池本体2を収容した後、外装ケース5のケース本体7の隙間に発泡性の材料を注入し、緩衝部材4を形成できる。   The buffer member 4 may be made of a material having a property of expanding as the temperature rises. The buffer member 4 may be a bag body filled with gas or liquid. In this case, after the assembled battery body 2 and the bag body (unfilled with gas or liquid) are accommodated in the case body 7 of the exterior case 5, the bag body is filled with gas or liquid, and the bag body is required as the buffer member 4. Rigidity can be given. Furthermore, you may comprise the buffer member 4 with a foamable material. In this case, after accommodating the assembled battery main body 2 in the case main body 7 of the outer case 5, a foamable material can be injected into the gap between the case main bodies 7 of the outer case 5 to form the buffer member 4.
緩衝部材4は、コイルばね、板ばねのようなばねであってもよい。   The buffer member 4 may be a spring such as a coil spring or a leaf spring.
単電池9の容器の形状は、実施形態のような角型に限定されず、例えば円筒型であってもよい。また、単電池9は、ラミネート型セルであってもよい。   The shape of the container of the unit cell 9 is not limited to the square shape as in the embodiment, and may be, for example, a cylindrical shape. The unit cell 9 may be a laminate type cell.
1 組電池
2 組電池本体
3 電池監視要素
4 緩衝部材
4a 基部
4b 突状部
4c 空間部
4d 連通部
4e 窪み
4f 貫通孔
5 外装ケース
6 開口
7 ケース本体
7a,7b,7c,7d 側壁
7e 底壁
7f 周側壁
8 蓋体
8a 頂壁
8b 周側壁
9 単電池
11 容器
12 開口
13 容器本体
13a 底壁
13b 周側壁
13c 長側壁
13d 短側壁
14 蓋体
15 電極端子
16 外部端子
17 スペーサ
18 エンドプレート
19 拘束バンド
20 バスバー
21A,21B 端部
22A,22B,22C,22D 側部
24 緩衝部材
25 緩衝部材
25a 空間部
25b 連通部
25c 窪み
26 コネクタ
27 安全弁
29 絶縁シート
35 放熱部材
35a 基部
35b 突条部
35c 短柱部
36 熱伝導部材
A 積層方向
B 中心線
C 電極端子の対向する方向
DESCRIPTION OF SYMBOLS 1 assembled battery 2 assembled battery main body 3 battery monitoring element 4 buffer member 4a base part 4b protruding part 4c space part 4d communication part 4e depression 4f through-hole 5 exterior case 6 opening 7 case body 7a, 7b, 7c, 7d side wall 7e bottom wall 7f Peripheral side wall 8 Lid 8a Top wall 8b Peripheral side wall 9 Cell 11 Container 12 Open 13 Container body 13a Bottom wall 13b Peripheral side wall 13c Long side wall 13d Short side wall 14 Lid 15 Electrode terminal 16 External terminal 17 Spacer 18 End plate 19 Constraint Band 20 Busbar 21A, 21B End 22A, 22B, 22C, 22D Side 24 Buffer member 25 Buffer member 25a Space 25b Communication portion 25c Depression 26 Connector 27 Safety valve 29 Insulation sheet 35 Heat dissipation member 35a Base 35b Projection 35c Short column Part 36 Heat conduction member A Lamination direction B Center line C Electrode Terminal facing direction

Claims (8)

  1. 底壁と、前記底壁から延びる長側壁と、前記底壁から延びる短側壁とそれぞれを有し、前記長側壁が重なるように所定の積層方向に積層されると共に電気的に接続されてモジュール化された複数の単電池と、前記複数の単電池を拘束する拘束部材とを備える組電池本体と、
    前記組電池本体を収容する外装ケースと、
    前記拘束部材と前記外装ケースとの間に配置され、前記組電池本体及び前記外装ケースに当接する緩衝部材と
    を備え
    前記組電池本体は前記積層方向に沿って延びる複数の側部を備え、
    前記緩衝部材が配置された前記組電池本体の前記側部と対向する前記組電池本体の他の側部、又は前記緩衝部材が配置された前記組電池本体の前記側部に、制御機器が配置されている、組電池。
    A module having a bottom wall, a long side wall extending from the bottom wall, and a short side wall extending from the bottom wall , stacked in a predetermined stacking direction so that the long side walls overlap and electrically connected to each other An assembled battery body comprising a plurality of unit cells and a restraining member that restrains the plurality of unit cells;
    An outer case for housing the assembled battery body;
    A buffer member disposed between the restraining member and the outer case, and abutting against the assembled battery body and the outer case ;
    The assembled battery body includes a plurality of side portions extending along the stacking direction,
    A control device is disposed on the other side of the assembled battery main body facing the side of the assembled battery main body on which the buffer member is disposed, or on the side of the assembled battery main body on which the buffer member is disposed. The assembled battery.
  2. 前記組電池本体は前記積層方向に沿って延びる複数の側部を備え、
    前記緩衝部材は、前記電池本体の前記複数の側部の一つと前記外装ケースとの間に配置されている、請求項1に記載の組電池。
    The assembled battery body includes a plurality of side portions extending along the stacking direction,
    The assembled battery according to claim 1, wherein the buffer member is disposed between one of the plurality of side portions of the battery body and the exterior case.
  3. 前記外装ケースは、少なくとも内面側が樹脂製である、請求項1又は請求項2に記載の組電池。   The assembled battery according to claim 1 or 2, wherein at least an inner surface side of the exterior case is made of resin.
  4. 前記緩衝部材の剛性は、前記外装ケースの剛性よりも低い、請求項1から請求項3のいずれか1項に記載の組電池。   The assembled battery according to any one of claims 1 to 3, wherein a rigidity of the buffer member is lower than a rigidity of the exterior case.
  5. 前記緩衝部材に前記制御機器が収容されている、請求項1から請求項4のいずれか1項に記載の組電池。 The assembled battery according to claim 1 , wherein the control device is accommodated in the buffer member.
  6. 前記外装ケースはコネクタを備え、
    前記緩衝部材には、前記制御機器が収容された空間部と、前記空間部と前記コネクタとを連通させる連通部とが設けられている、請求項に記載の組電池。
    The outer case includes a connector,
    The assembled battery according to claim 5 , wherein the buffer member is provided with a space portion in which the control device is accommodated, and a communication portion that communicates the space portion with the connector.
  7. 前記緩衝部材に配置された放熱部材をさらに備える、請求項1から請求項のいずれか1項に記載の組電池。 The assembled battery according to any one of claims 1 to 6 , further comprising a heat dissipating member disposed on the buffer member.
  8. 前記外装ケースは、
    底部と、一端が前記底部に接続されて他端が開口を画定する周壁部とを備え、前記開口から挿入された前記組電池本体を収容するケース本体とを備え、
    前記緩衝部材は、前記組電池本体と前記ケース本体の前記周壁部との間に配置されている、請求項1から請求項のいずれか1項に記載の組電池。
    The outer case is
    A bottom portion, a peripheral wall portion having one end connected to the bottom portion and the other end defining an opening, and a case body that accommodates the assembled battery body inserted from the opening,
    The buffer member, the battery pack body and being disposed between the peripheral wall of the case body, the battery pack according to any one of claims 1 to 7.
JP2014129399A 2014-06-24 2014-06-24 Assembled battery Active JP6260467B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014129399A JP6260467B2 (en) 2014-06-24 2014-06-24 Assembled battery

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014129399A JP6260467B2 (en) 2014-06-24 2014-06-24 Assembled battery

Publications (2)

Publication Number Publication Date
JP2016009585A JP2016009585A (en) 2016-01-18
JP6260467B2 true JP6260467B2 (en) 2018-01-17

Family

ID=55227014

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2014129399A Active JP6260467B2 (en) 2014-06-24 2014-06-24 Assembled battery

Country Status (1)

Country Link
JP (1) JP6260467B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108028332B (en) * 2015-09-18 2021-11-02 株式会社杰士汤浅国际 Electricity storage device
JP6743359B2 (en) 2015-09-29 2020-08-19 株式会社Gsユアサ Power storage device
KR102115482B1 (en) * 2016-09-29 2020-05-26 주식회사 엘지화학 Battery pack
JP6812943B2 (en) * 2017-10-13 2021-01-13 トヨタ自動車株式会社 Battery pack manufacturing method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3349349B2 (en) * 1996-06-27 2002-11-25 三洋電機株式会社 Battery mounting structure
US9431686B2 (en) * 2011-02-28 2016-08-30 Sanyo Electric Co., Ltd. Cell module and manufacturing method for cell module
JP2013026090A (en) * 2011-07-23 2013-02-04 Toyota Industries Corp Battery pack
JP5966371B2 (en) * 2012-01-16 2016-08-10 株式会社Gsユアサ Power supply
JP6107114B2 (en) * 2012-01-16 2017-04-05 株式会社Gsユアサ Power supply
JP6205808B2 (en) * 2013-04-08 2017-10-04 株式会社Gsユアサ Storage element module

Also Published As

Publication number Publication date
JP2016009585A (en) 2016-01-18

Similar Documents

Publication Publication Date Title
JP6260467B2 (en) Assembled battery
JP6205808B2 (en) Storage element module
JP6245038B2 (en) Power storage device
US20160036029A1 (en) Power source pack
JP6086315B2 (en) Power storage device
US10003054B2 (en) Power source pack
TWI482337B (en) Secondary battery pack, protection circuit module thereof, and method of manufacturing a secondary battery pack
JP6274052B2 (en) Power storage device
JP6606818B2 (en) Power storage device module
US9947958B2 (en) Power source module
WO2017047683A1 (en) Power storage device
JP6753045B2 (en) Power storage device
JP6212914B2 (en) Power storage device
JP6794617B2 (en) Power storage device
JP6103237B2 (en) Battery pack
JP6103238B2 (en) Battery pack
JP6876995B2 (en) Battery module
JP6264739B2 (en) Power storage device
JP2018200856A (en) Power storage device
JP2017126537A (en) Battery pack
JP6179163B2 (en) Assembled battery assembly method and assembled battery
JP6629140B2 (en) Power storage module
JP6720547B2 (en) Power storage device
JP2018032520A (en) Power storage device
JP6281449B2 (en) Power storage device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20161019

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20170823

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20170905

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20171027

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20171114

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20171127

R150 Certificate of patent or registration of utility model

Ref document number: 6260467

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150