JP5998868B2 - Power storage module - Google Patents
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- JP5998868B2 JP5998868B2 JP2012251197A JP2012251197A JP5998868B2 JP 5998868 B2 JP5998868 B2 JP 5998868B2 JP 2012251197 A JP2012251197 A JP 2012251197A JP 2012251197 A JP2012251197 A JP 2012251197A JP 5998868 B2 JP5998868 B2 JP 5998868B2
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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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Description
本発明は、複数の蓄電装置が、端壁が同一平面上に位置する状態で積層されているとともに、複数の端壁に跨るダクトを備える蓄電装置モジュールに関する。 The present invention relates to a power storage device module in which a plurality of power storage devices are stacked in a state where end walls are positioned on the same plane, and includes a duct straddling the plurality of end walls.
ＥＶ（Electric Vehicle）やＰＨＶ（Plug in Hybrid Vehicle）などの車両には、電動機への供給電力を蓄える蓄電装置としての二次電池を、複数モジュール化した電池モジュールが搭載されている。各二次電池は、ケースに電極組立体と電解液を収容して構成される。また、二次電池のケースには、ケース内の圧力が上昇した場合に開放する圧力開放弁が備えられている。圧力開放弁が開放されたとき、ケース内からは電解液が気化した可燃性のガスが噴出するが、このガスを二次電池から遠ざけるために、電池モジュールにはダクトが設けられている（例えば、特許文献１参照）。 Vehicles such as EVs (Electric Vehicles) and PHVs (Plug in Hybrid Vehicles) are equipped with a battery module in which a secondary battery serving as a power storage device that stores electric power supplied to an electric motor is made into a plurality of modules. Each secondary battery is configured by housing an electrode assembly and an electrolytic solution in a case. Further, the case of the secondary battery is provided with a pressure release valve that opens when the pressure in the case increases. When the pressure release valve is opened, a combustible gas in which the electrolyte is vaporized is ejected from the case. In order to keep this gas away from the secondary battery, a duct is provided in the battery module (for example, , See Patent Document 1).
図１１（ａ）に示すように、特許文献１の蓄電素子モジュール８０は、五個のリチウムイオン二次電池８１を電気的に直列に接続した状態で、幅方向に並べ、幅方向の両端部にアルミニウム製の拘束プレート８３を配置し、二枚の拘束プレート８３を鉄製の拘束バンド８４で拘束して一体化した。各リチウムイオン二次電池８１の上面には図示しない安全弁が設けられている。蓄電素子モジュール８０には、絶縁部材製のダクト部材８５が配設され、このダクト部材８５は拘束プレート８３にネジ８９によって固定されている。 As shown in FIG. 11 (a), the storage element module 80 of Patent Document 1 is arranged in the width direction with five lithium ion secondary batteries 81 electrically connected in series, and both end portions in the width direction. A restraint plate 83 made of aluminum was arranged on the top, and the two restraint plates 83 were restrained by an iron restraint band 84 and integrated. A safety valve (not shown) is provided on the upper surface of each lithium ion secondary battery 81. The power storage element module 80 is provided with a duct member 85 made of an insulating member, and the duct member 85 is fixed to the restraining plate 83 with screws 89.
図１１（ｂ）に示すように、ダクト部材８５は、リチウム二次電池８１の積層方向に延びる箱状であり、その底面８５ａがリチウム二次電池８１の上面８１ａと当接している。ダクト部材８５は、リチウム二次電池８１の安全弁に対応した位置に貫通孔８５ｂを有し、かつリチウム二次電池８１の並んだ方向の一方の側面に内部のガスを排出する排出孔８５ｃが開口している。 As shown in FIG. 11B, the duct member 85 has a box shape extending in the stacking direction of the lithium secondary battery 81, and the bottom surface 85 a is in contact with the top surface 81 a of the lithium secondary battery 81. The duct member 85 has a through hole 85b at a position corresponding to the safety valve of the lithium secondary battery 81, and an exhaust hole 85c for discharging internal gas is opened on one side surface in the direction in which the lithium secondary battery 81 is arranged. doing.
そして、それぞれのリチウム二次電池８１の安全弁が開放されたとき、その安全弁から噴出した電解液の分解ガスは、貫通孔８５ｂからダクト部材８５の内部に流入する。そして、その流入した分解ガスは、ダクト部材８５によってリチウムイオン二次電池８１から遠ざけられた位置で排出孔８５ｃから排出される。 When the safety valve of each lithium secondary battery 81 is opened, the decomposition gas of the electrolyte sprayed from the safety valve flows into the duct member 85 from the through hole 85b. Then, the introduced decomposition gas is discharged from the discharge hole 85 c at a position away from the lithium ion secondary battery 81 by the duct member 85.
ところが、安全弁から噴出した分解ガスが、ダクト部材８５の貫通孔８５ｂから洩れてしまう虞があり、貫通孔８５ｂのシール性を高めることが要求されている。
本発明は、ダクトにおける連通口のシール性を高めることができる蓄電装置モジュールを提供することにある。
However, the decomposed gas ejected from the safety valve may leak from the through hole 85b of the duct member 85, and it is required to improve the sealing performance of the through hole 85b.
An object of the present invention is to provide a power storage device module that can improve the sealing performance of a communication port in a duct.
上記問題点を解決するために、請求項１に記載の蓄電装置モジュールは、電極組立体及び電解液をケース内に収容し、前記ケースの内圧が開放圧を越えた場合に開放する圧力開放弁を前記ケースの端壁に有する蓄電装置を複数有し、複数の蓄電装置が、前記端壁が同一平面上に位置する状態で積層されているとともに、前記複数の端壁に跨るダクトを備え
る蓄電装置モジュールであって、前記ダクトの内部に排出路を有するとともに、前記ダクトの壁部に前記排出路から前記圧力開放弁に向けて開口する複数の連通口と、前記複数の連通口をシールするシール部材を有し、前記ダクトは、前記連通口を前記圧力開放弁に向き合わせ、かつ前記シール部材が前記端壁に密接した状態で配置されており、前記ダクトが前記端壁に向かう方向へのテンションを前記ダクトに付与するテンション付与手段を有し、前記テンション付与手段は、前記ダクトにおいて前記壁部と反対側の別の壁部に配置される押圧部材と、前記複数の蓄電装置の少なくとも一つの前記端壁の反対面に係止する係止部材と、前記係止部材に一端が連結され、他端が前記押圧部材に連結される連結部材とを有する。
In order to solve the above problem, a power storage device module according to claim 1 is a pressure release valve that houses an electrode assembly and an electrolyte in a case and opens when the internal pressure of the case exceeds the open pressure. A plurality of power storage devices, wherein the plurality of power storage devices are stacked in a state where the end walls are positioned on the same plane, and the power storage device includes a duct straddling the plurality of end walls. An apparatus module having a discharge path inside the duct, and sealing a plurality of communication ports that open from the discharge path toward the pressure release valve on the wall of the duct, and the plurality of communication ports The duct has a seal member, and the duct is disposed in a state where the communication port faces the pressure release valve and the seal member is in close contact with the end wall, and the duct is directed to the end wall. Te The Deployment have a tension applying means for applying to said duct, said tension applying means includes a pressing member disposed on another wall portion opposite the wall portion in the duct, at least one of the plurality of power storage devices A locking member for locking to the opposite surface of the one end wall, and a connecting member having one end connected to the locking member and the other end connected to the pressing member .
これによれば、テンション付与手段によってダクトが端壁に向けて押圧される。すると、シール部材はダクトと端壁の間で押し潰され、シール部材は端壁に密接する。したがって、シール部材によって圧力開放弁の周囲をシールすることができ、万一、圧力開放弁が開放されても、連通口から流体が洩れることを防止できる。
また、前記テンション付与手段は、前記ダクトにおいて前記壁部と反対側の別の壁部に配置される押圧部材と、前記複数の蓄電装置の少なくとも一つでの前記端壁と反対面に係止する係止部材と、前記係止部材に一端が連結され、他端が前記押圧部材に連結される連結部材とを有している。これによれば、押圧部材、係止部材及び連結部材を用いて、ダクトにテンションを付与することができる。よって、蓄電装置を利用してダクトへテンションを付与することができる。
また、前記係止部材は、全ての蓄電装置の前記反対面に係止しているのが好ましい。
これによれば、例えば、係止部材が、複数の蓄電装置のうちの一つだけに係止している場合と比べると、蓄電装置に対する係止部材の係止状態を安定させることができ、係止部材が蓄電装置から外れにくくなる。よって、安定した係止部材に対し、連結部材を介して連結される押圧部材も安定した状態とすることができ、ダクトを端壁に向けて確実にテンションを付与することができる。
According to this, the duct is pressed toward the end wall by the tension applying means. Then, the seal member is crushed between the duct and the end wall, and the seal member comes into close contact with the end wall. Therefore, the periphery of the pressure release valve can be sealed by the seal member, and even if the pressure release valve is opened, fluid can be prevented from leaking from the communication port.
Further, the tension applying means is engaged with a pressing member disposed on another wall portion on the opposite side of the wall portion in the duct and on a surface opposite to the end wall in at least one of the plurality of power storage devices. And a connecting member having one end connected to the locking member and the other end connected to the pressing member. According to this, a tension | tensile_strength can be provided to a duct using a press member, a locking member, and a connection member. Therefore, tension can be applied to the duct using the power storage device.
Moreover, it is preferable that the said locking member is locked to the said opposite surface of all the electrical storage apparatuses.
According to this, for example, compared with the case where the locking member is locked to only one of the plurality of power storage devices, the locking state of the locking member with respect to the power storage device can be stabilized, The locking member is difficult to come off from the power storage device. Therefore, the pressing member connected via the connecting member to the stable locking member can also be in a stable state, and tension can be reliably applied toward the end wall of the duct.
上記問題点を解決するために、請求項３に記載の蓄電装置モジュールは、電極組立体及び電解液をケース内に収容し、前記ケースの内圧が開放圧を越えた場合に開放する圧力開放弁を前記ケースの端壁に有した角型をなす蓄電装置を複数有し、複数の蓄電装置が、前記端壁が同一平面上に位置する状態で積層されているとともに、前記複数の端壁に跨るダクトを備える蓄電装置モジュールであって、前記ダクトの内部に排出路を有するとともに、前記ダクトの壁部に前記排出路から前記圧力開放弁に向けて開口する複数の連通口と、前記複数の連通口をシールするシール部材を有し、前記ダクトは、前記連通口を前記圧力開放弁に向き合わせ、かつ前記シール部材が前記端壁に密接した状態で配置されており、前記ダクトが前記端壁に向かう方向へのテンションを前記ダクトに付与するテンション付与手段を有し、前記複数の蓄電装置を前記積層方向に拘束する拘束部材を有し、前記蓄電装置における前記端壁の反対面の四辺に立設された周壁のうち、面積が広い二つの側壁を第１側壁とし、前記第１側壁に連続する二つの側壁を第２側壁としたとき、前記拘束部材は、積層方向の両端に位置する前記第１側壁の外側、及び全ての蓄電装置の前記第２側壁の外側を取り囲むように配置され、前記テンション付与手段は、前記ダクトにおいて前記壁部と反対側の別の壁部に配置される押圧部と、前記押圧部から前記拘束部材に向けて延設され、前記拘束部材に連結される連結部とを有するテンション付与部材である。 In order to solve the above problem, a power storage device module according to claim 3 is a pressure release valve that houses an electrode assembly and an electrolytic solution in a case and opens when the internal pressure of the case exceeds the open pressure. And a plurality of power storage devices that are stacked in a state where the end walls are positioned on the same plane, and the plurality of power storage devices are stacked on the end walls. A power storage device module including a duct extending across the duct, and having a discharge path inside the duct, and a plurality of communication ports that open from the discharge path toward the pressure release valve on the wall of the duct; A seal member that seals the communication port; and the duct is disposed in a state in which the communication port faces the pressure release valve and the seal member is in close contact with the end wall. Head to the wall The tension of the direction have a tension applying means for applying to said duct, said plurality of power storage devices has a restraining member for restraining the stacking direction, standing on the four sides of the opposite surface of said end wall at said power storage device Among the peripheral walls, when the two side walls having a large area are used as the first side wall and the two side walls continuous to the first side wall are used as the second side wall, the restraining members are located at both ends in the stacking direction. The pressing portion is arranged so as to surround the outside of one side wall and the outside of the second side wall of all the power storage devices, and the tension applying means is arranged on another wall portion opposite to the wall portion in the duct. If, extends toward the restraining member from the pressing portion, Ru tension applying member der and a connecting portion connected to the restraining member.
これによれば、テンション付与手段によってダクトが端壁に向けて押圧される。すると、シール部材はダクトと端壁の間で押し潰され、シール部材は端壁に密接する。したがって、シール部材によって圧力開放弁の周囲をシールすることができ、万一、圧力開放弁が開放されても、連通口から流体が洩れることを防止できる。
また、これによれば、拘束部材をダクトにテンションを付与する手段として利用することができる。
According to this, the duct is pressed toward the end wall by the tension applying means. Then, the seal member is crushed between the duct and the end wall, and the seal member comes into close contact with the end wall. Therefore, the periphery of the pressure release valve can be sealed by the seal member, and even if the pressure release valve is opened, fluid can be prevented from leaking from the communication port.
Moreover, according to this, a restraint member can be utilized as a means to give tension to a duct.
本発明によれば、ダクトにおける連通口のシール性を高めることができる。 ADVANTAGE OF THE INVENTION According to this invention, the sealing performance of the communicating port in a duct can be improved.
（第１の実施形態）
以下、蓄電装置モジュールを電池モジュールに具体化した第１の実施形態を図１〜図８にしたがって説明する。
(First embodiment)
Hereinafter, a first embodiment in which a power storage device module is embodied as a battery module will be described with reference to FIGS.
図１に示すように、電池モジュール１０は、二次電池１１を複数備えるとともに、それら二次電池１１は拘束部材２０によって一体化されている。
図３に示すように、各二次電池１１のケース１３には電極組立体１２及び電解液（図示せず）が収容されている。ケース１３は、開口部を有する直方体状のケース本体２４と、ケース本体２４の開口部を閉塞する矩形平板状の蓋体１４とを有する。ケース本体２４と蓋体１４は、何れも金属製（例えば、ステンレスやアルミニウム）である。また、本実施形態の二次電池１１は、その外観が角型をなす角型電池である。また、本実施形態の二次電池１１は、リチウムイオン電池である。ケース本体２４は、有底四角筒状であり、矩形平板状の底壁２１と、この底壁２１の四辺から立設された四角筒状の周壁２２と、を有する。
As shown in FIG. 1, the battery module 10 includes a plurality of secondary batteries 11, and the secondary batteries 11 are integrated by a restraining member 20.
As shown in FIG. 3, an electrode assembly 12 and an electrolytic solution (not shown) are accommodated in the case 13 of each secondary battery 11. The case 13 includes a rectangular parallelepiped case main body 24 having an opening, and a rectangular flat plate-shaped lid body 14 that closes the opening of the case main body 24. Both the case main body 24 and the lid body 14 are made of metal (for example, stainless steel or aluminum). Further, the secondary battery 11 of the present embodiment is a prismatic battery whose appearance is square. Further, the secondary battery 11 of the present embodiment is a lithium ion battery. The case main body 24 has a bottomed rectangular cylindrical shape, and includes a rectangular flat plate-shaped bottom wall 21 and a rectangular cylindrical peripheral wall 22 erected from four sides of the bottom wall 21.
また、ケース１３に収容された電極組立体１２には、正極端子１５と負極端子１６が電気的に接続されている。そして、正極端子１５及び負極端子１６には、ケース１３から絶縁するためのリング状の絶縁リング１７ａがそれぞれ取り付けられている。また、正極端子１５と負極端子１６は、蓋体１４からケース１３外に露出している。二次電池１１は、ケース１３の内圧が開放圧を越えた場合に開放する圧力開放弁１８を蓋体１４に有する。よって、本実施形態では、蓋体１４が、圧力開放弁１８の設けられた端壁に相当する。 A positive electrode terminal 15 and a negative electrode terminal 16 are electrically connected to the electrode assembly 12 housed in the case 13. The positive electrode terminal 15 and the negative electrode terminal 16 are respectively attached with ring-shaped insulating rings 17 a for insulating from the case 13. The positive electrode terminal 15 and the negative electrode terminal 16 are exposed outside the case 13 from the lid body 14. The secondary battery 11 has a pressure release valve 18 in the lid body 14 that opens when the internal pressure of the case 13 exceeds the open pressure. Therefore, in this embodiment, the lid body 14 corresponds to an end wall provided with the pressure release valve 18.
なお、ケース本体２４の周壁２２において、最も広い二つの長方形状の側壁を第１側壁２２ａとし、二つの第１側壁２２ａに直交する他の二つの側壁を第２側壁２２ｂとする。そして、第１側壁２２ａの長手方向を二次電池１１の長手方向とする。また、蓋体１４において、正極端子１５及び負極端子１６が突出する面の短手方向を、二次電池１１の厚み方向とする。そして、複数の二次電池１１は、隣り合う二次電池１１同士において第１側壁２２ａの間に伝熱プレート１９を介装した状態で積層されている。よって、電池モジュール１０の長手方向に沿って各二次電池１１の厚み方向が延びている。また、電池モジュール１０では、全ての蓋体１４が同一平面上に位置している。 In the peripheral wall 22 of the case body 24, the two widest rectangular side walls are referred to as a first side wall 22a, and the other two side walls orthogonal to the two first side walls 22a are referred to as second side walls 22b. The longitudinal direction of the first side wall 22a is taken as the longitudinal direction of the secondary battery 11. In the lid body 14, the short side direction of the surface from which the positive electrode terminal 15 and the negative electrode terminal 16 protrude is defined as the thickness direction of the secondary battery 11. And the several secondary battery 11 is laminated | stacked in the state which interposed the heat exchanger plate 19 between the 1st side walls 22a in the adjacent secondary batteries 11. Therefore, the thickness direction of each secondary battery 11 extends along the longitudinal direction of the battery module 10. Moreover, in the battery module 10, all the cover bodies 14 are located on the same plane.
図１及び図８に示すように、複数の二次電池１１は、矩形環状の拘束部材２０によって積層方向に拘束されている。拘束部材２０は金属製（例えば、鉄）である。拘束部材２０は、積層方向両端の二次電池１１の第１側壁２２ａの外側、及び全ての第２側壁２２ｂの外側から電池モジュール１０を取り囲んでいる。拘束部材２０は、短手方向に延びる二つの辺部２０ａに、各辺部２０ａの長手方向中央から突出する係止突部２３を備える。各係止突部２３は、辺部２０ａから棒状に突出する軸部２３ａと、軸部２３ａの先端の球状の頭部２３ｂを備える。 As shown in FIGS. 1 and 8, the plurality of secondary batteries 11 are restrained in the stacking direction by a rectangular annular restraining member 20. The restraining member 20 is made of metal (for example, iron). The restraining member 20 surrounds the battery module 10 from the outside of the first side wall 22a of the secondary battery 11 at both ends in the stacking direction and from the outside of all the second side walls 22b. The restraining member 20 includes locking protrusions 23 that protrude from the longitudinal center of each side 20a on two sides 20a extending in the short direction. Each locking projection 23 includes a shaft portion 23a protruding in a rod shape from the side portion 20a and a spherical head portion 23b at the tip of the shaft portion 23a.
図１及び図２に示すように、電池モジュール１０は、全ての蓋体１４に跨る長尺四角筒状及び樹脂製のダクト３０を備える。
図２及び図４に示すように、ダクト３０は、その内側に排出路３４を備え、排出路３４の両端は開放されている。ダクト３０において、蓋体１４に対向する壁部を電池側壁部３１とすると、排出路３４を挟んだ電池側壁部３１と反対側の別の壁部を、外側壁部３２とする。また、ダクト３０において、電池側壁部３１と外側壁部３２を繋ぐ一対の壁部を連結壁部３８とする。
As shown in FIGS. 1 and 2, the battery module 10 includes a long rectangular tube shape and a resin duct 30 that straddle all the lids 14.
As shown in FIGS. 2 and 4, the duct 30 includes a discharge path 34 inside thereof, and both ends of the discharge path 34 are open. In the duct 30, when the wall portion facing the lid body 14 is a battery side wall portion 31, another wall portion on the opposite side of the battery side wall portion 31 with the discharge path 34 interposed therebetween is referred to as an outer wall portion 32. In the duct 30, a pair of wall portions that connect the battery side wall portion 31 and the outer wall portion 32 are referred to as connection wall portions 38.
ダクト３０は、電池側壁部３１に排出路３４と連通する複数の連通口３５を有し、複数の連通口３５は電池側壁部３１の長手方向に等間隔おきに設けられている。また、電池側壁部３１は、各連通口３５の外周から電池側壁部３１の外面側に突出する四角環状の突条部３１ａを備え、この突条部３１ａには四角環状のシール部材３３が装着されている。よって、連通口３５はシール部材３３によって全周が囲まれるとともに、シール部材３３は電池側壁部３１の外面よりも突出している。 The duct 30 has a plurality of communication ports 35 communicating with the discharge path 34 in the battery side wall portion 31, and the plurality of communication ports 35 are provided at equal intervals in the longitudinal direction of the battery side wall portion 31. Further, the battery side wall portion 31 includes a square annular protrusion 31a protruding from the outer periphery of each communication port 35 to the outer surface side of the battery side wall portion 31, and a rectangular annular seal member 33 is attached to the protrusion 31a. Has been. Therefore, the communication port 35 is entirely surrounded by the seal member 33, and the seal member 33 protrudes from the outer surface of the battery side wall portion 31.
図１及び図２に示すように、ダクト３０は、各連通口３５が電池モジュール１０の各圧力開放弁１８に向けて開口する状態で配設されている。電池モジュール１０は、ダクト３０に対し蓋体１４に向けたテンションを付与するテンション付与手段としてのテンション付与部材４０を備える。テンション付与部材４０は、ダクト３０の外側壁部３２に面接触する弾性材料（例えば、ゴム）製の押圧部４１を備え、この押圧部４１は細長板状である。押圧部４１の長手方向の長さは、ダクト３０の長手方向への長さ、及び電池モジュール１０の長手方向への長さより若干長く設定されている。 As shown in FIGS. 1 and 2, the duct 30 is disposed in a state where each communication port 35 opens toward each pressure release valve 18 of the battery module 10. The battery module 10 includes a tension applying member 40 as a tension applying unit that applies a tension toward the lid body 14 to the duct 30. The tension applying member 40 includes a pressing portion 41 made of an elastic material (for example, rubber) in surface contact with the outer wall portion 32 of the duct 30, and the pressing portion 41 has an elongated plate shape. The length of the pressing portion 41 in the longitudinal direction is set slightly longer than the length of the duct 30 in the longitudinal direction and the length of the battery module 10 in the longitudinal direction.
テンション付与部材４０は、押圧部４１の長手方向両端から延びる細長板状の連結部４２を備える。各連結部４２は、押圧部４１に対し屈曲し、テンション付与部材４０はコ字状をなす。各連結部４２は、先端部に金属板が巻き付けられた連結片４３を備え、連結片４３及び連結部４２を貫通する係止孔４５を有する。各係止孔４５は鍵孔状である。 The tension applying member 40 includes an elongated plate-like connecting portion 42 extending from both longitudinal ends of the pressing portion 41. Each connecting portion 42 is bent with respect to the pressing portion 41, and the tension applying member 40 has a U shape. Each connecting portion 42 includes a connecting piece 43 around which a metal plate is wound at the tip, and includes a connecting hole 43 and a locking hole 45 penetrating the connecting portion 42. Each locking hole 45 has a keyhole shape.
電池モジュール１０では、拘束部材２０の係止突部２３の軸部２３ａが、係止孔４５の円形状の孔から挿通されるとともに、係止孔４５の内周縁に軸部２３ａが係止している。テンション付与部材４０は、押圧部４１及び連結部４２が長手方向に延びるように弾性変形して係止突部２３に係止している。ダクト３０の各シール部材３３は、電池側壁部３１の外面と蓋体１４の外面との間に介装されるとともに、電池側壁部３１の外面と蓋体１４の外面に密接し、連通口３５をシールしている。 In the battery module 10, the shaft portion 23 a of the locking protrusion 23 of the restraining member 20 is inserted from the circular hole of the locking hole 45, and the shaft portion 23 a is locked to the inner peripheral edge of the locking hole 45. ing. The tension applying member 40 is elastically deformed so that the pressing portion 41 and the connecting portion 42 extend in the longitudinal direction and is locked to the locking projection 23. Each seal member 33 of the duct 30 is interposed between the outer surface of the battery side wall portion 31 and the outer surface of the lid body 14, and is in close contact with the outer surface of the battery side wall portion 31 and the outer surface of the lid body 14. Is sealed.
上記構成の電池モジュール１０は、矩形箱状のモジュール用ケース５０内に収容され、このモジュール用ケース５０は長手方向両端の側壁に排気口５０ａを有する。そして、ダクト３０の長手方向両端は、モジュール用ケース５０の排気口５０ａに向けて開放されている。 The battery module 10 having the above configuration is accommodated in a rectangular box-shaped module case 50, and the module case 50 has exhaust ports 50a on both side walls in the longitudinal direction. The both ends of the duct 30 in the longitudinal direction are opened toward the exhaust port 50a of the module case 50.
次に、電池モジュール１０の製造方法及び作用を記載する。
複数の二次電池１１を拘束部材２０によって積層状態で拘束する。次に、蓋体１４の上面にダクト３０の電池側壁部３１を対向配置するとともに、各圧力開放弁１８を連通口３５で囲む位置にダクト３０を配置する。
Next, the manufacturing method and operation of the battery module 10 will be described.
The plurality of secondary batteries 11 are restrained in a stacked state by the restraining member 20. Next, the battery side wall 31 of the duct 30 is disposed opposite to the upper surface of the lid body 14, and the duct 30 is disposed at a position surrounding each pressure release valve 18 with the communication port 35.
次に、テンション付与部材４０の両連結部４２を引張って弾性変形させながら、係止孔４５に拘束部材２０の係止突部２３を挿入する。そして、連結部４２が若干、原形状に復帰（収縮）することで、係止孔４５の内周縁に係止突部２３の軸部２３ａが係止し、テンション付与部材４０によってダクト３０が複数の二次電池１１と一体化されるとともに、電池モジュール１０が製造される。 Next, the locking projections 23 of the restraining member 20 are inserted into the locking holes 45 while pulling and elastically deforming both the connecting portions 42 of the tension applying member 40. Then, the connecting portion 42 is slightly restored (contracted) to the original shape, so that the shaft portion 23 a of the locking projection 23 is locked to the inner peripheral edge of the locking hole 45, and a plurality of ducts 30 are formed by the tension applying member 40. The secondary battery 11 and the battery module 10 are manufactured.
電池モジュール１０において、テンション付与部材４０の連結部４２が拘束部材２０の係止突部２３に係止され、この拘束部材２０は、複数の二次電池１１に対し移動不能に固定されている。そして、連結部４２の引張りによって押圧部４１がダクト３０に向けて引寄せられている。よって、ダクト３０は、テンション付与部材４０の押圧部４１によって外側壁部３２に直交する方向から押圧され、ダクト３０は長手方向全体に亘って蓋体１４（二次電池１１）に向けてテンションが付与されている。このため、ダクト３０によって、シール部材３３が電池側壁部３１と蓋体１４との間で押し潰され、シール部材３３は電池側壁部３１の外面と蓋体１４の外面に確実に密接する。 In the battery module 10, the connecting portion 42 of the tension applying member 40 is locked to the locking protrusion 23 of the restraining member 20, and the restraining member 20 is fixed to the plurality of secondary batteries 11 so as not to move. Then, the pressing portion 41 is drawn toward the duct 30 by the pulling of the connecting portion 42. Therefore, the duct 30 is pressed from the direction orthogonal to the outer wall portion 32 by the pressing portion 41 of the tension applying member 40, and the duct 30 is tensioned toward the lid body 14 (secondary battery 11) over the entire longitudinal direction. Has been granted. For this reason, the seal member 33 is crushed between the battery side wall portion 31 and the lid body 14 by the duct 30, and the seal member 33 is in close contact with the outer surface of the battery side wall portion 31 and the outer surface of the lid body 14.
そして、複数の二次電池１１のいずれかにおいて、ケース１３内の圧力が上昇し、圧力開放弁１８が開放されたとき、ケース１３内からは電解液が気化した可燃性のガスが噴出する。このガスは、連通口３５を通ってダクト３０の排出路３４に排出される。そして、連通口３５はシール部材３３によってシール性が高められているため、ガスが連通口３５からモジュール用ケース５０内に洩れることが防止される。ダクト３０の排出路３４に排出されたガスは、排出路３４を通ってモジュール用ケース５０の排気口５０ａからモジュール用ケース５０外へ排気される。 Then, in any of the plurality of secondary batteries 11, when the pressure in the case 13 rises and the pressure release valve 18 is opened, a combustible gas in which the electrolyte is vaporized is ejected from the case 13. This gas is discharged to the discharge path 34 of the duct 30 through the communication port 35. Further, since the sealing performance of the communication port 35 is enhanced by the seal member 33, gas is prevented from leaking from the communication port 35 into the module case 50. The gas discharged to the discharge path 34 of the duct 30 is exhausted to the outside of the module case 50 from the exhaust port 50 a of the module case 50 through the discharge path 34.
次に、電池モジュール１０におけるダクト３０の製造方法について説明する。
図５及び図６に示すように、ダクト３０は、樹脂製のダクト形成部材５５を折り曲げて製造される。矩形状のダクト形成部材５５は、外側壁部３２を形成する矩形板状の第１壁形成部５７ａを有し、この第１壁形成部５７ａの長手方向に沿って連通口３５を形成し得る貫通孔３５ａが予め形成されている。なお、貫通孔３５ａは、後述の連通口３５の形成方法によって連通口３５を形成するための孔であり、連通口３５より一回り小さく形成されている。
Next, a method for manufacturing the duct 30 in the battery module 10 will be described.
As shown in FIGS. 5 and 6, the duct 30 is manufactured by bending a resin duct forming member 55. The rectangular duct forming member 55 has a rectangular plate-shaped first wall forming portion 57a that forms the outer wall portion 32, and the communication port 35 can be formed along the longitudinal direction of the first wall forming portion 57a. A through hole 35a is formed in advance. The through hole 35 a is a hole for forming the communication port 35 by a method of forming the communication port 35 described later, and is formed slightly smaller than the communication port 35.
ダクト形成部材５５は、その短手方向で第１壁形成部５７ａを挟む位置に、第１の折り線５５ａを有する。ダクト形成部材５５は、その短手方向で両第１の折り線５５ａよりも外側に、連結壁部３８を形成する矩形板状の第２壁形成部５７ｂを有する。さらに、ダクト形成部材５５は、その短手方向で第２壁形成部５７ｂを挟む位置に、第２の折り線５５ｂを有する。また、ダクト形成部材５５は、その短手方向で第２の折り線５５ｂより外側に、外側壁部３２を形成する第３壁形成部５７ｃを有する。 The duct forming member 55 has a first fold line 55a at a position sandwiching the first wall forming portion 57a in the short direction. The duct forming member 55 has a rectangular plate-like second wall forming portion 57b that forms the connecting wall portion 38 outside the first fold lines 55a in the short direction. Further, the duct forming member 55 has a second fold line 55b at a position sandwiching the second wall forming portion 57b in the short direction. Further, the duct forming member 55 has a third wall forming portion 57c that forms the outer wall portion 32 outside the second folding line 55b in the short direction.
そして、第１の折り線５５ａを谷折りして第１壁形成部５７ａから電池側壁部３１を形成し、さらに、第２の折り線５５ｂを谷折りして各第２壁形成部５７ｂから連結壁部３８を形成する。また、二つの第３壁形成部５７ｃを、その長手方向に延びる両端縁を突き合わせて接合する。すると、二つの第３壁形成部５７ｃから外側壁部３２が形成されるとともに、ダクト形成部材５５が四角筒状に成形されてダクト３０が形成される。 Then, the first fold line 55a is valley-folded to form the battery side wall portion 31 from the first wall forming portion 57a, and the second fold line 55b is valley-folded to connect from each second wall forming portion 57b. A wall 38 is formed. Moreover, the two 3rd wall formation parts 57c are joined by abutting the both end edges extended in the longitudinal direction. Then, the outer wall portion 32 is formed from the two third wall forming portions 57c, and the duct forming member 55 is formed into a rectangular tube shape to form the duct 30.
次に、連通口３５の形成方法及びシール部材３３の装着方法について説明する。
図７（ａ）に示すように、ダクト形成部材５５において、第１壁形成部５７ａに連通口３５よりも一回り小さい貫通孔３５ａを成形時に形成しておく。次に、図７（ｂ）に示すように、貫通孔３５ａに加熱した成形部品５６を挿入する。成形部品５６は、四角柱状をなすとともに、軸方向の一端から他端に向けて徐々に断面積が大きくなる形状である。そして、成形部品５６を、断面積の小さい側から貫通孔３５ａに挿入していく。成形部品５６が貫通孔３５ａに挿入されていくに従い、成形部品５６の熱によって軟化したダクト形成部材５５は成形部品５６の挿入方向に沿って押し出されていき、突条部３１ａが形成される。そして、貫通孔３５ａが、連通口３５と同じ大きさにまで拡大されたら、成形部品５６を抜き取る。最後に、図７（ｃ）に示すように、突条部３１ａにシール部材３３を装着する。
Next, a method for forming the communication port 35 and a method for mounting the seal member 33 will be described.
As shown in FIG. 7A, in the duct forming member 55, a through hole 35a that is slightly smaller than the communication port 35 is formed in the first wall forming portion 57a at the time of molding. Next, as shown in FIG. 7B, the heated molded part 56 is inserted into the through hole 35a. The molded part 56 has a quadrangular prism shape and a shape in which a cross-sectional area gradually increases from one end to the other end in the axial direction. Then, the molded part 56 is inserted into the through hole 35a from the side with the smaller cross-sectional area. As the molded part 56 is inserted into the through-hole 35a, the duct forming member 55 softened by the heat of the molded part 56 is pushed out along the insertion direction of the molded part 56, and the ridge 31a is formed. And if the through-hole 35a is expanded to the same magnitude | size as the communication port 35, the molded component 56 will be extracted. Finally, as shown in FIG. 7C, the seal member 33 is attached to the protrusion 31a.
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）テンション付与部材４０によって、ダクト３０に蓋体１４に向けたテンションを付与した。このため、ダクト３０と蓋体１４の間に介装されたシール部材３３を押し潰して、シール部材３３を蓋体１４の外面に密接させることができる。よって、万一、圧力開放弁１８が開放されても、圧力開放弁１８から噴出したガスが連通口３５から洩れることを防止できる。
According to the above embodiment, the following effects can be obtained.
(1) A tension toward the lid body 14 was applied to the duct 30 by the tension applying member 40. For this reason, the seal member 33 interposed between the duct 30 and the lid body 14 can be crushed to bring the seal member 33 into close contact with the outer surface of the lid body 14. Therefore, even if the pressure release valve 18 is opened, the gas ejected from the pressure release valve 18 can be prevented from leaking from the communication port 35.
（２）電池モジュール１０は、複数の二次電池１１が拘束部材２０によって積層方向に拘束され、この拘束部材２０にテンション付与部材４０の連結部４２を係止させた。このため、電池モジュール１０を形成するための拘束部材２０を利用してダクト３０にテンションを付与することができる。 (2) In the battery module 10, the plurality of secondary batteries 11 are restrained in the stacking direction by the restraining member 20, and the connecting portion 42 of the tension applying member 40 is locked to the restraining member 20. For this reason, a tension | tensile_strength can be provided to the duct 30 using the restraint member 20 for forming the battery module 10. FIG.
（３）ダクト３０の連通口３５を囲むシール部材３３は、電池側壁部３１の外面から突出する突条部３１ａに装着されている。このため、例えば、電池側壁部３１に突条部３１ａが形成されず、連通口３５の周縁にシール部材３３を装着する場合と比べると、シール部材３３を簡単に装着することができる。 (3) The seal member 33 surrounding the communication port 35 of the duct 30 is attached to a ridge 31 a that protrudes from the outer surface of the battery side wall 31. For this reason, for example, the protrusion 31 a is not formed on the battery side wall 31, and the seal member 33 can be easily attached as compared with the case where the seal member 33 is attached to the periphery of the communication port 35.
（４）テンション付与部材４０は、外側壁部３２の長手方向全体に亘って面接触する押圧部４１を備え、その押圧部４１の長手方向の両端部に連結部４２を備える。このため、連結部４２によって押圧部４１にテンションを付与したとき、ダクト３０の長手方向全体に亘って蓋体１４に向けたテンションを付与することができる。よって、全ての蓋体１４に跨るダクト３０を、全ての蓋体１４に向けてテンションを付与することができ、全てのシール部材３３を蓋体１４に密接させることができる。 (4) The tension applying member 40 includes a pressing portion 41 that is in surface contact over the entire longitudinal direction of the outer wall portion 32, and includes connecting portions 42 at both ends in the longitudinal direction of the pressing portion 41. For this reason, when a tension is applied to the pressing portion 41 by the connecting portion 42, a tension toward the lid body 14 can be applied over the entire longitudinal direction of the duct 30. Therefore, it is possible to apply tension to the ducts 30 that straddle all the lid bodies 14 toward all the lid bodies 14, and it is possible to bring all the seal members 33 into close contact with the lid bodies 14.
（第２の実施形態）
次に、蓄電装置モジュールを電池モジュールに具体化した第２の実施形態を図９〜図１０にしたがって説明する。なお、第２の実施形態は、第１の実施形態と同様の部分についてはその詳細な説明を省略する。
(Second Embodiment)
Next, 2nd Embodiment which actualized the electrical storage apparatus module to the battery module is described according to FIGS. In the second embodiment, detailed description of the same parts as those in the first embodiment is omitted.
第２の実施形態の電池モジュール６０において、積層方向の両端の二次電池１１の外側には、それぞれ板状のエンドプレート６１が配設されている。両エンドプレート６１の四隅には、それぞれ通しボルト６２が挿通されるとともに、各通しボルト６２にナット６３が螺合され、全ての二次電池１１が積層方向に拘束された状態で一体化されている。よって、第２の実施形態では、エンドプレート６１、通しボルト６２及びナット６３が拘束部材に相当する。 In the battery module 60 of the second embodiment, plate-like end plates 61 are respectively disposed outside the secondary batteries 11 at both ends in the stacking direction. Through bolts 62 are inserted into the four corners of both end plates 61, and nuts 63 are screwed into the through bolts 62 so that all the secondary batteries 11 are integrated in a state of being restrained in the stacking direction. Yes. Therefore, in the second embodiment, the end plate 61, the through bolt 62, and the nut 63 correspond to a restraining member.
テンション付与手段は、ダクト３０を蓋体１４に向けて押圧する押圧部材７０と、全ての二次電池１１において、蓋体１４と反対面となる底壁２１に係止する係止部材７１と、押圧部材７０と係止部材７１を連結する連結部材７２とからなる。 The tension applying means includes a pressing member 70 that presses the duct 30 toward the lid body 14, a locking member 71 that is locked to the bottom wall 21 that is the opposite surface of the lid body 14 in all the secondary batteries 11, The connecting member 72 connects the pressing member 70 and the locking member 71.
押圧部材７０は、ダクト３０の外側壁部３２に面接触する弾性材料（例えば、ゴム）製の押圧部７０ａを備え、この押圧部７０ａは細長板状である。押圧部７０ａの長手方向の長さは、ダクト３０の長手方向への長さ、及び電池モジュール６０の長手方向への長さより若干長く設定されている。また、押圧部材７０は、押圧部７０ａの長手方向両端から延びる弾性材料製及び細長板状の第１連結部７０ｂを備える。各第１連結部７０ｂは、押圧部７０ａに対し屈曲しており、押圧部材７０は全体としてコ字状をなす。また、各第１連結部７０ｂは、先端に押圧部７０ａとは逆方向に延びる第１連結片７０ｃを有する。 The pressing member 70 includes a pressing portion 70a made of an elastic material (for example, rubber) in surface contact with the outer wall portion 32 of the duct 30, and the pressing portion 70a has an elongated plate shape. The length of the pressing portion 70 a in the longitudinal direction is set slightly longer than the length of the duct 30 in the longitudinal direction and the length of the battery module 60 in the longitudinal direction. Further, the pressing member 70 includes a first connecting portion 70b made of an elastic material and extending from both ends in the longitudinal direction of the pressing portion 70a and an elongated plate shape. Each first connecting portion 70b is bent with respect to the pressing portion 70a, and the pressing member 70 has a U-shape as a whole. Each first connecting portion 70b has a first connecting piece 70c extending in the opposite direction to the pressing portion 70a at the tip.
係止部材７１は、電池モジュール６０の長手方向に延び、全ての二次電池１１の底壁２１に係止する金属製の係止部７１ａを備え、この係止部７１ａは細長板状である。係止部７１ａの長手方向の長さは、電池モジュール６０の長手方向への長さより若干長く設定されている。また、係止部材７１は、係止部７１ａの長手方向両端から延びる細長板状の第２連結部７１ｂを備える。各第２連結部７１ｂは、係止部７１ａに対し直交する方向に延び、係止部材７１はコ字状をなす。また、各第２連結部７１ｂは、先端に係止部７１ａとは逆方向に延びる第２連結片７１ｃを有する。 The locking member 71 includes a metal locking portion 71a that extends in the longitudinal direction of the battery module 60 and locks to the bottom wall 21 of all the secondary batteries 11, and the locking portion 71a has an elongated plate shape. . The length of the locking portion 71a in the longitudinal direction is set slightly longer than the length of the battery module 60 in the longitudinal direction. The locking member 71 includes an elongated plate-like second connecting portion 71b extending from both longitudinal ends of the locking portion 71a. Each 2nd connection part 71b is extended in the direction orthogonal to the latching | locking part 71a, and the latching member 71 makes U shape. Each of the second connecting portions 71b has a second connecting piece 71c that extends in the opposite direction to the locking portion 71a at the tip.
連結部材７２は、押圧部材７０の第１連結部７０ｂと、係止部材７１の第２連結部７１ｂとを連結する。連結部材７２は、Ｙ字状の本体部７２ａを有するとともに、本体部７２ａの三つの先端に、本体部７２ａの面に対し直交する方向に延びる連結片７２ｃを有する。 The connecting member 72 connects the first connecting portion 70 b of the pressing member 70 and the second connecting portion 71 b of the locking member 71. The connecting member 72 has a Y-shaped main body portion 72a, and has connecting pieces 72c extending at three tips of the main body portion 72a in a direction orthogonal to the surface of the main body portion 72a.
電池モジュール６０において、一対の係止部材７１は、その係止部７１ａが、各ケース１３の底壁２１に係止しているとともに、各第２連結部７１ｂが両エンドプレート６１の外側に配置されている。また、押圧部材７０は、その押圧部７０ａがダクト３０の外側壁部３２の外面上に配置されるとともに、各第１連結部７０ｂがダクト３０の長手方向両端の外側に配置されている。 In the battery module 60, the pair of locking members 71 have their locking portions 71 a locked to the bottom wall 21 of each case 13, and each second connecting portion 71 b is disposed outside the both end plates 61. Has been. In addition, the pressing member 70 has a pressing portion 70 a disposed on the outer surface of the outer wall portion 32 of the duct 30, and each first connecting portion 70 b is disposed outside both ends in the longitudinal direction of the duct 30.
そして、各係止部材７１の第２連結片７１ｃと、連結部材７２の一端の連結片７２ｃとがボルト７５ａとナット７５ｂによって締結されている。また、押圧部材７０の第１連結片７０ｃと、連結部材７２の他端の連結片７２ｃとがボルト７５ａとナット７５ｂによって締結され、
よって、電池モジュール６０において、押圧部材７０の押圧部７０ａが、連結部材７２を介して係止部材７１に連結され、この連結状態では、連結部材７２によってダクト３０が係止部材７１側に引張られている。このため、ダクト３０は押圧部材７０の押圧部７０ａによって、外側壁部３２に直交する方向から押圧され、ダクト３０は長手方向全体に亘って蓋体１４（二次電池１１）に向けてテンションが付与されている。このため、ダクト３０によって、シール部材３３が電池側壁部３１と蓋体１４との間で押し潰され、シール部材３３は電池側壁部３１の外面と蓋体１４の外面に確実に密接する。
And the 2nd connection piece 71c of each locking member 71 and the connection piece 72c of the end of the connection member 72 are fastened by the volt | bolt 75a and the nut 75b. Further, the first connecting piece 70c of the pressing member 70 and the connecting piece 72c at the other end of the connecting member 72 are fastened by a bolt 75a and a nut 75b,
Therefore, in the battery module 60, the pressing portion 70a of the pressing member 70 is connected to the locking member 71 via the connecting member 72. In this connected state, the duct 30 is pulled toward the locking member 71 by the connecting member 72. ing. For this reason, the duct 30 is pressed from the direction orthogonal to the outer wall portion 32 by the pressing portion 70a of the pressing member 70, and the duct 30 is tensioned toward the lid body 14 (secondary battery 11) over the entire longitudinal direction. Has been granted. For this reason, the seal member 33 is crushed between the battery side wall portion 31 and the lid body 14 by the duct 30, and the seal member 33 is in close contact with the outer surface of the battery side wall portion 31 and the outer surface of the lid body 14.
従って、第２の実施形態によれば、第１の実施形態に記載の効果と同様に加えて以下の効果を得ることができる。
（５）電池モジュール６０は、複数の二次電池１１をエンドプレート６１と、通しボルト６２と、ナット６３で積層方向に拘束した。そして、押圧部材７０、係止部材７１及び連結部材７２を用いて、ダクト３０にテンションを付与した。よって、二次電池１１の拘束と、ダクト３０へのテンションの付与とを別々の部材で行うようにしたため、二次電池１１の拘束と、ダクト３０へのテンション付与のそれぞれを確実に行うことができる。
Therefore, according to the second embodiment, in addition to the effects described in the first embodiment, the following effects can be obtained.
(5) In the battery module 60, the plurality of secondary batteries 11 are restrained in the stacking direction by the end plate 61, the through bolt 62, and the nut 63. Then, tension was applied to the duct 30 using the pressing member 70, the locking member 71, and the connecting member 72. Therefore, since the restraint of the secondary battery 11 and the application of tension to the duct 30 are performed by separate members, the restraint of the secondary battery 11 and the application of tension to the duct 30 can be reliably performed. it can.
（６）係止部材７１を全ての二次電池１１の底壁２１に係止させ、その係止部材７１に対し、押圧部材７０を連結部材７２を用いて連結し、ダクト３０にテンションを付与した。したがって、第２の実施形態では、エンドプレート６１や通しボルト６２といった拘束部材を使わず、二次電池１１だけを利用してダクト３０にテンションを付与することができる。 (6) The locking member 71 is locked to the bottom wall 21 of all the secondary batteries 11, the pressing member 70 is connected to the locking member 71 using the connecting member 72, and tension is applied to the duct 30. did. Therefore, in the second embodiment, it is possible to apply tension to the duct 30 using only the secondary battery 11 without using a restraining member such as the end plate 61 or the through bolt 62.
（７）係止部材７１は、その係止部７１ａが全ての二次電池１１の底壁２１に係止し、電池モジュール６０の長手方向全体に亘って係止している。したがって、例えば、係止部材７１が、積層方向両端の各二次電池１１だけに係止している場合と比べると、二次電池１１に対する係止部材７１の係止状態を安定させることができ、係止部材７１が二次電池１１から外れにくくなる。よって、安定した係止部材７１に対し、連結部材７２を介して連結される押圧部材７０も安定した状態とすることができ、ダクト３０を蓋体１４に向けて確実にテンションを付与することができる。 (7) The locking member 71 has its locking portion 71 a locked to the bottom wall 21 of all the secondary batteries 11 and locked over the entire length of the battery module 60. Therefore, for example, the locking state of the locking member 71 with respect to the secondary battery 11 can be stabilized as compared with the case where the locking member 71 is locked only to each secondary battery 11 at both ends in the stacking direction. The locking member 71 is unlikely to be detached from the secondary battery 11. Therefore, the pressing member 70 connected to the stable locking member 71 via the connecting member 72 can also be in a stable state, and the duct 30 can be reliably applied with the tension toward the lid body 14. it can.
なお、本実施形態は以下のように変更してもよい。
○ 第１の実施形態において、拘束部材２０に対するテンション付与部材４０の係止方法は、係止突部２３と係止孔４５の係止以外の方法でもよい。例えば、図８の２点鎖線に示すように、連結部４２の先端に係止片４２ｃを延設し、この係止片４２ｃを拘束部材２０の下面に係止させてもよい。
In addition, you may change this embodiment as follows.
In the first embodiment, the method of locking the tension applying member 40 with respect to the restraining member 20 may be a method other than the locking of the locking protrusion 23 and the locking hole 45. For example, as shown by a two-dot chain line in FIG. 8, a locking piece 42 c may be extended at the tip of the connecting portion 42, and the locking piece 42 c may be locked to the lower surface of the restraining member 20.
○ ダクト形成部材５５において、折り線の位置は適宜変更してもよい。
○ ダクト３０は、ダクト形成部材５５を折り曲げて形成するのではなく、型成形で形成してもよい。
In the duct forming member 55, the position of the fold line may be changed as appropriate.
The duct 30 may be formed by molding instead of bending the duct forming member 55.
○ ダクト３０は突条部３１ａが無くてもよく、この場合、シール部材３３は、連通口３５の内周縁に装着される。
○ 拘束部材２０は、金属製でなく、ゴム製であってもよい。
The duct 30 may not have the protrusion 31a. In this case, the seal member 33 is attached to the inner peripheral edge of the communication port 35.
○ The restraining member 20 may be made of rubber instead of metal.
○ 第１の実施形態において、テンション付与部材４０は複数でもよく、第２の実施形態において、押圧部材７０は複数でもよい。
○ 第２の実施形態において、係止部材７１は一つでもよい。
In the first embodiment, a plurality of tension applying members 40 may be provided, and in the second embodiment, a plurality of pressing members 70 may be provided.
In the second embodiment, the number of locking members 71 may be one.
○ 第２の実施形態において、押圧部材７０の第１連結片７０ｃと連結部材７２の他端の連結片７２ｃ、及び各係止部材７１の第２連結片７１ｃと連結部材７２の一端の連結片７２ｃを、第１の実施形態のように係止突部２３と係止孔４５の係止で連結してもよい。 In the second embodiment, the first connecting piece 70c of the pressing member 70 and the connecting piece 72c at the other end of the connecting member 72, and the second connecting piece 71c of each locking member 71 and the connecting piece at one end of the connecting member 72 are used. 72c may be coupled by locking the locking projection 23 and the locking hole 45 as in the first embodiment.
○ 第２の実施形態のエンドプレート６１に、第１の実施形態で拘束部材２０に設けた係止突部２３を設け、第１の実施形態のテンション付与部材４０を係止突部２３に係止させてダクト３０にテンションを付与してもよい。すなわち、拘束部材にテンション付与部材４０を係止してダクト３０にテンションを付与する。 ○ The end plate 61 of the second embodiment is provided with the locking projection 23 provided on the restraining member 20 in the first embodiment, and the tension applying member 40 of the first embodiment is engaged with the locking projection 23. It may be stopped and tension may be applied to the duct 30. That is, tension is applied to the duct 30 by locking the tension applying member 40 to the restraining member.
○ 第２の実施形態では、係止部材７１の係止部７１ａを、全ての二次電池１１の底壁２１に係止させたが、係止部７１ａを全ての二次電池１１のうちの一部の二次電池１１の底壁２１に係止させる構成としてもよい。 In the second embodiment, the locking portion 71a of the locking member 71 is locked to the bottom wall 21 of all the secondary batteries 11, but the locking portion 71a is included in all the secondary batteries 11. It is good also as a structure latched by the bottom wall 21 of some secondary batteries 11. FIG.
○ 各実施形態では、各連通口３５にシール部材３３を設けたが、複数の連通口３５を一括して取り囲むシール部材としてもよい。
○ 電池モジュール１０，６０はモジュール用ケース５０に収容されていなくてもよい。
In each embodiment, the seal member 33 is provided at each communication port 35. However, a seal member that collectively surrounds the plurality of communication ports 35 may be used.
The battery modules 10 and 60 may not be accommodated in the module case 50.
○ 圧力開放弁１８は、蓋体１４ではなくケース本体２４に設けられていてもよい。この場合、圧力開放弁１８が設けられたケース本体２４の周壁２２のうちの一つの側壁が端壁を形成し、複数の二次電池１１は、ケース本体２４の側壁が同一平面上に位置するように積層されるとともに、その側壁に跨るようにダクト３０が設けられる。 The pressure release valve 18 may be provided in the case body 24 instead of the lid body 14. In this case, one side wall of the peripheral walls 22 of the case main body 24 provided with the pressure release valve 18 forms an end wall, and in the plurality of secondary batteries 11, the side walls of the case main body 24 are positioned on the same plane. In addition, the duct 30 is provided so as to straddle the side wall.
○ ケース１３の形状は、円柱状や、楕円柱状でもよい。
○ 蓄電装置は、ニッケル水素二次電池や、電気二重層キャパシタであってもよい。
次に、上記実施形態及び別例から把握できる技術的思想について以下に追記する。
The shape of the case 13 may be a columnar shape or an elliptical column shape.
The power storage device may be a nickel metal hydride secondary battery or an electric double layer capacitor.
Next, the technical idea that can be grasped from the above embodiment and other examples will be described below.
（イ）前記ダクトは、前記連通口の周囲に、前記ダクトの外方に突出する突条部を有し、該突条部に前記シール部材が装着されている請求項１〜請求項４のうちいずれか一項に記載の蓄電装置モジュール。 (A) The duct has a ridge portion protruding outward from the duct around the communication port, and the seal member is attached to the ridge portion. The electrical storage apparatus module as described in any one of them.
１０…蓄電装置モジュールとしての電池モジュール、１１…蓄電装置としての二次電池、１２…電極組立体、１３…ケース、１４…端壁としての蓋体、１８…圧力開放弁、２０…拘束部材、３０…ダクト、３１…壁部としての電池側壁部、３２…別の壁部としての外側壁部、３３…シール部材、３４…排出路、３５…連通口、４０…テンション付与手段としてのテンション付与部材、４１，７０ａ…押圧部、４２…連結部、６１…拘束部材としてのエンドプレート、６２…拘束部材としての通しボルト、６３…拘束部材としてのナット、７０…テンション付与手段としての押圧部材、７１…テンション付与手段としての係止部材、７２…テンション付与手段としての連結部材。 DESCRIPTION OF SYMBOLS 10 ... Battery module as an electrical storage apparatus module, 11 ... Secondary battery as an electrical storage apparatus, 12 ... Electrode assembly, 13 ... Case, 14 ... Lid as end wall, 18 ... Pressure release valve, 20 ... Restraint member, DESCRIPTION OF SYMBOLS 30 ... Duct, 31 ... Battery side wall part as a wall part, 32 ... Outer wall part as another wall part, 33 ... Sealing member, 34 ... Discharge path, 35 ... Communication port, 40 ... Tension provision as tension provision means Members 41, 70a ... pressing part, 42 ... connecting part, 61 ... end plate as restraining member, 62 ... through bolt as restraining member, 63 ... nut as restraining member, 70 ... pressing member as tension applying means, 71... Locking member as tension applying means, 72 .. Connecting member as tension applying means.
Claims (3)
前記ダクトの内部に排出路を有するとともに、前記ダクトの壁部に前記排出路から前記圧力開放弁に向けて開口する複数の連通口と、前記複数の連通口をシールするシール部材を有し、
前記ダクトは、前記連通口を前記圧力開放弁に向き合わせ、かつ前記シール部材が前記端壁に密接した状態で配置されており、
前記ダクトが前記端壁に向かう方向へのテンションを前記ダクトに付与するテンション付与手段を有し、
前記テンション付与手段は、前記ダクトにおいて前記壁部と反対側の別の壁部に配置される押圧部材と、前記複数の蓄電装置の少なくとも一つの前記端壁の反対面に係止する係止部材と、前記係止部材に一端が連結され、他端が前記押圧部材に連結される連結部材とを有する蓄電装置モジュール。 The electrode assembly and the electrolytic solution are housed in a case, and a plurality of power storage devices having a pressure release valve on the end wall of the case that opens when the internal pressure of the case exceeds the open pressure, the plurality of power storage devices The power storage device module is provided with a duct that is stacked in a state in which the end walls are positioned on the same plane, and includes a duct that straddles the plurality of end walls,
The duct has a discharge path inside the duct, and has a plurality of communication ports that open from the discharge path toward the pressure release valve in the wall portion of the duct, and a seal member that seals the plurality of communication holes.
The duct is disposed in a state where the communication port faces the pressure release valve and the seal member is in close contact with the end wall,
Have a tension applying means for applying a tension in a direction in which the duct toward the end wall to said duct,
The tension applying means includes a pressing member disposed on another wall portion on the opposite side of the wall portion in the duct, and a locking member for locking to at least one of the end walls of the plurality of power storage devices. And a connecting member having one end connected to the locking member and the other end connected to the pressing member .
前記ダクトの内部に排出路を有するとともに、前記ダクトの壁部に前記排出路から前記圧力開放弁に向けて開口する複数の連通口と、前記複数の連通口をシールするシール部材を有し、
前記ダクトは、前記連通口を前記圧力開放弁に向き合わせ、かつ前記シール部材が前記端壁に密接した状態で配置されており、
前記ダクトが前記端壁に向かう方向へのテンションを前記ダクトに付与するテンション付与手段を有し、
前記複数の蓄電装置を前記積層方向に拘束する拘束部材を有し、
前記蓄電装置における前記端壁の反対面の四辺に立設された周壁のうち、面積が広い二つの側壁を第１側壁とし、前記第１側壁に連続する二つの側壁を第２側壁としたとき、前記拘束部材は、積層方向の両端に位置する前記第１側壁の外側、及び全ての蓄電装置の前記第２側壁の外側を取り囲むように配置され、
前記テンション付与手段は、前記ダクトにおいて前記壁部と反対側の別の壁部に配置される押圧部と、前記押圧部から前記拘束部材に向けて延設され、前記拘束部材に連結される連結部とを有するテンション付与部材である蓄電装置モジュール。 The electrode assembly and the electrolytic solution are housed in a case, and a plurality of rectangular power storage devices having a pressure release valve on the end wall of the case that opens when the internal pressure of the case exceeds the open pressure, A plurality of power storage devices are stacked in a state where the end walls are located on the same plane, and a power storage device module including a duct straddling the plurality of end walls,
The duct has a discharge path inside the duct, and has a plurality of communication ports that open from the discharge path toward the pressure release valve in the wall portion of the duct, and a seal member that seals the plurality of communication holes.
The duct is disposed in a state where the communication port faces the pressure release valve and the seal member is in close contact with the end wall,
Tension applying means for applying tension to the duct in a direction in which the duct is directed toward the end wall;
A restraining member that restrains the plurality of power storage devices in the stacking direction;
Of the peripheral walls erected on the four sides opposite to the end wall of the power storage device, the two side walls having a large area are used as the first side wall, and the two side walls continuous with the first side wall are used as the second side wall. The restraining member is disposed so as to surround the outside of the first side wall located at both ends in the stacking direction and the outside of the second side wall of all the power storage devices,
The tension applying means includes a pressing portion disposed on another wall portion on the opposite side of the wall portion in the duct, and a connection extending from the pressing portion toward the restraining member and connected to the restraining member. charge reservoir module Ru tensioning member der and a part.
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| WO2021199596A1 (en) * | 2020-03-31 | 2021-10-07 | 三洋電機株式会社 | Power source device, and vehicle and power storage device each equipped with same |
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