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JP2019009033A - Storage battery unit - Google Patents

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JP2019009033A
JP2019009033A JP2017124790A JP2017124790A JP2019009033A JP 2019009033 A JP2019009033 A JP 2019009033A JP 2017124790 A JP2017124790 A JP 2017124790A JP 2017124790 A JP2017124790 A JP 2017124790A JP 2019009033 A JP2019009033 A JP 2019009033A
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module
fitting
battery
battery module
storage battery
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JP6871085B2 (en
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中山　聖英
Seiei Nakayama
聖英 中山
英俊 竹井
Hidetoshi Takei
英俊 竹井
雄大 鈴木
Yudai Suzuki
雄大 鈴木
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Sekisui Chemical Co Ltd
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Sekisui Chemical Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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Abstract

【課題】狭い空間においても、筐体内に電池モジュールを容易に収容し、固定することができる蓄電池ユニットを提供する。【解決手段】蓄電池ユニット１０は、筐体２０と、複数の電池モジュール３０と、電池モジュール３０からなる積層体４０をその上面側および下面側から保持する一対のモジュール保持部材５１，５２と、を備え、電池モジュール３０はその上面および下面に設けられた嵌合突起３０Ａ，３０Ｂを互いに嵌合することによって積層され、積層体４０の上面側に配置される第１モジュール保持部材５１の嵌合穴５３に、積層体４０の最上層をなす電池モジュール３０の嵌合突起３０Ａが嵌合され、積層体４０の下面側に配置される第２モジュール保持部材５２の嵌合穴５４に、積層体４０の最下層をなす電池モジュール３０の嵌合突起３０Ｂが嵌合され、一対のモジュール保持部材５１，５２を介して、筐体２０内に積層体４０が固定されている。【選択図】図１PROBLEM TO BE SOLVED: To provide a storage battery unit capable of easily accommodating and fixing a battery module in a housing even in a narrow space. A storage battery unit (10) includes a housing (20), a plurality of battery modules (30), and a pair of module holding members (51, 52) holding a stacked body (40) of the battery modules (30) from the upper surface side and the lower surface side. The battery module 30 is stacked by fitting the fitting protrusions 30A and 30B provided on the upper surface and the lower surface thereof to each other, and the fitting hole of the first module holding member 51 arranged on the upper surface side of the stacked body 40. The fitting protrusion 30A of the battery module 30 forming the uppermost layer of the laminated body 40 is fitted into the laminated body 53, and the laminated body 40 is fitted into the fitting hole 54 of the second module holding member 52 arranged on the lower surface side of the laminated body 40. The fitting protrusion 30</b>B of the battery module 30, which is the lowermost layer, is fitted and the laminated body 40 is fixed in the housing 20 via the pair of module holding members 51 and 52. [Selection diagram] Figure 1

Description

本発明は、蓄電池ユニットに関する。   The present invention relates to a storage battery unit.

近年、一般の家屋内に、太陽電池パネル等で発電した電気エネルギーを夜間にも使えるように蓄えておくために蓄電池ユニットが設置されている。この蓄電池ユニットは、筐体と、その筐体内にて積層されて収容される複数の電池モジュールとを備えている。電池モジュールとしては、リチウムイオン二次電池等の蓄電池が用いられている。   In recent years, a storage battery unit has been installed in a general house to store electric energy generated by a solar battery panel so that it can be used at night. The storage battery unit includes a housing and a plurality of battery modules that are stacked and accommodated in the housing. A storage battery such as a lithium ion secondary battery is used as the battery module.

筐体内に複数の電池モジュールを積層して収容するための構造としては、例えば、本体と、その本体に設けられる少なくとも１つのレールと、レールが設けられていない本体の他面に形成される少なくとも１つのレール溝とを備える電池モジュールを用いた蓄電池ユニットが知られている（例えば、特許文献１参照）。   As a structure for stacking and housing a plurality of battery modules in a housing, for example, a main body, at least one rail provided in the main body, and at least formed on the other surface of the main body where no rail is provided A storage battery unit using a battery module including one rail groove is known (see, for example, Patent Document 1).

特表２０１６−５００９１１号公報JP-T-2006-500911

家屋内に蓄電ユニットが設置される場所は、主に家具や内装の中等の狭い空間である。そのため、特許文献１に記載されているような蓄電池ユニットでは、筐体内に電池モジュールを収容し、固定する作業が煩雑となるという課題があった。   The place where the power storage unit is installed in the house is mainly a narrow space such as in furniture or interior. Therefore, in the storage battery unit as described in Patent Document 1, there is a problem that the work of housing and fixing the battery module in the housing becomes complicated.

本発明は、上記事情に鑑みてなされたものであって、狭い空間においても、筐体内に電池モジュールを容易に収容し、固定することができる蓄電池ユニットを提供することを目的とする。   This invention is made | formed in view of the said situation, Comprising: It aims at providing the storage battery unit which can accommodate a battery module in a housing | casing easily even in a narrow space, and can fix it.

［１］筐体と、該筐体内にて積層されて収容される複数の電池モジュールと、前記筐体内にて前記電池モジュールからなる積層体を、該積層体の上面側および下面側から保持する一対のモジュール保持部材と、を備え、前記電池モジュールは、前記一対のモジュール保持部材の間にて、前記電池モジュールの上面および下面に設けられた嵌合突起を互いに嵌合することによって積層され、前記積層体の上面側に配置される前記一対のモジュール保持部材の一方に設けられた嵌合穴に、前記積層体の最上層をなす前記電池モジュールの嵌合突起が嵌合され、前記積層体の下面側に配置される前記一対のモジュール保持部材の他方に設けられた嵌合穴に、前記積層体の最下層をなす前記電池モジュールの嵌合突起が嵌合され、前記一対のモジュール保持部材を介して、前記筐体内に前記積層体が固定されている蓄電池ユニット。 [1] A casing, a plurality of battery modules stacked and accommodated in the casing, and a stack made of the battery modules in the casing are held from the upper surface side and the lower surface side of the stack body. A pair of module holding members, and the battery module is laminated by fitting fitting protrusions provided on an upper surface and a lower surface of the battery module between the pair of module holding members, A fitting protrusion of the battery module forming the uppermost layer of the laminate is fitted into a fitting hole provided in one of the pair of module holding members arranged on the upper surface side of the laminate, and the laminate A fitting projection of the battery module forming the lowermost layer of the stacked body is fitted into a fitting hole provided in the other of the pair of module holding members arranged on the lower surface side of the pair, and the pair of modules Via the holding member, the storage battery unit in which the laminate in the housing is fixed.

［２］前記一対のモジュール保持部材の他方が前記筐体の内底面に固定された［１］に記載の蓄電池ユニット。 [2] The storage battery unit according to [1], wherein the other of the pair of module holding members is fixed to an inner bottom surface of the casing.

［３］前記積層体を複数有する［１］または［２］に記載の蓄電池ユニット。 [3] The storage battery unit according to [1] or [2], which includes a plurality of the stacked bodies.

［４］前記積層体の上面に、制御ユニットが配置された［１］〜［３］のいずれかに記載の蓄電池ユニット。 [4] The storage battery unit according to any one of [1] to [3], wherein a control unit is disposed on the top surface of the laminate.

本発明によれば、狭い空間においても、筐体内に電池モジュールを容易に収容し、固定することができる蓄電池ユニットを提供することができる。   According to the present invention, it is possible to provide a storage battery unit that can easily accommodate and fix a battery module in a housing even in a narrow space.

本発明の蓄電池ユニットの一実施形態の概略構成を示す斜視図である。It is a perspective view which shows schematic structure of one Embodiment of the storage battery unit of this invention. 本発明の蓄電池ユニットの一実施形態における電池モジュールの概略構成を示す斜視図である。It is a perspective view which shows schematic structure of the battery module in one Embodiment of the storage battery unit of this invention. 本発明の蓄電池ユニットの一実施形態における電池モジュールの概略構成を示す断面図である。It is sectional drawing which shows schematic structure of the battery module in one Embodiment of the storage battery unit of this invention.

本発明の蓄電池ユニットの実施の形態について説明する。
なお、本実施の形態は、発明の趣旨をより良く理解させるために具体的に説明するものであり、特に指定のない限り、本発明を限定するものではない。 Embodiment of the storage battery unit of this invention is described.
Note that this embodiment is specifically described in order to better understand the gist of the invention, and does not limit the present invention unless otherwise specified.

［蓄電池ユニット］
図１は、本実施形態の蓄電池ユニットの概略構成を示す斜視図である。図２は、本実施形態の蓄電池ユニットにおける電池モジュールの概略構成を示す斜視図である。図３は、本実施形態の蓄電池ユニットにおける電池モジュールの概略構成を示す断面図である。
本実施形態の蓄電池ユニット１０は、直方体状の筐体２０と、筐体２０内にて積層されて収容される複数の電池モジュール３０と、筐体２０内にて電池モジュール３０からなる積層体４０を、積層体４０の上面４０ａ側および下面４０ｂ側から保持する一対のモジュール保持部材５１，５２と、を備えている。 [Storage battery unit]
FIG. 1 is a perspective view showing a schematic configuration of the storage battery unit of the present embodiment. FIG. 2 is a perspective view showing a schematic configuration of the battery module in the storage battery unit of the present embodiment. FIG. 3 is a cross-sectional view showing a schematic configuration of the battery module in the storage battery unit of the present embodiment.
The storage battery unit 10 of the present embodiment includes a rectangular parallelepiped housing 20, a plurality of battery modules 30 stacked and accommodated in the housing 20, and a stacked body 40 including the battery modules 30 in the housing 20. Are provided from the upper surface 40a side and the lower surface 40b side of the laminated body 40, and a pair of module holding members 51 and 52.

以下、積層体４０の上面４０ａ側に配置されるモジュール保持部材５１を、第１モジュール保持部材５１といい、積層体４０の下面４０ｂ側に配置されるモジュール保持部材５２を、第２モジュール保持部材５２という。   Hereinafter, the module holding member 51 disposed on the upper surface 40a side of the stacked body 40 is referred to as a first module holding member 51, and the module holding member 52 disposed on the lower surface 40b side of the stacked body 40 is referred to as the second module holding member. 52.

本実施形態では、２つの電池モジュール３０が筐体２０の高さ方向に沿って積層され、積層体４０Ａをなしている。また、３つの電池モジュール３０が筐体２０の高さ方向に沿って積層され、積層体４０Ｂをなしている。積層体４０Ａと積層体４０Ｂは、筐体２０内に並列に配置されている。   In the present embodiment, two battery modules 30 are stacked along the height direction of the housing 20 to form a stacked body 40A. In addition, three battery modules 30 are stacked along the height direction of the housing 20 to form a stacked body 40B. The stacked body 40 </ b> A and the stacked body 40 </ b> B are arranged in parallel in the housing 20.

電池モジュール３０は、図２に示すように、上面３０ａに設けられた平面視円形状の嵌合突起３０Ａと、下面３０ｂに設けられた平面視円形状の嵌合突起３０Ｂとを有する。
電池モジュール３０は、第１モジュール保持部材５１と第２モジュール保持部材５２の間にて、電池モジュール３０の上面３０ａに設けられた嵌合突起３０Ａと電池モジュール３０の下面３０ｂに設けられた嵌合突起３０Ｂとを互いに嵌合することによって積層されている。 As shown in FIG. 2, the battery module 30 includes a fitting projection 30A having a circular shape in plan view provided on the upper surface 30a and a fitting projection 30B having a circular shape in plan view provided on the lower surface 30b.
The battery module 30 has a fitting protrusion 30A provided on the upper surface 30a of the battery module 30 and a fitting provided on the lower surface 30b of the battery module 30 between the first module holding member 51 and the second module holding member 52. The protrusions 30B are stacked by fitting with each other.

嵌合突起３０Ａは電池モジュール３０の上面３０ａに対して垂直に設けられている。すなわち、嵌合突起３０Ａは電池モジュール３０の上面３０ａから、電池モジュール３０の厚さ方向に沿って突設されている。同様に、嵌合突起３０Ｂは電池モジュール３０の下面３０ｂに対して垂直に設けられている。すなわち、嵌合突起３０Ｂは電池モジュール３０の下面３０ｂから、電池モジュール３０の厚さ方向に沿って突設されている。   The fitting protrusion 30 </ b> A is provided perpendicular to the upper surface 30 a of the battery module 30. That is, the fitting protrusion 30 </ b> A protrudes from the upper surface 30 a of the battery module 30 along the thickness direction of the battery module 30. Similarly, the fitting protrusion 30 </ b> B is provided perpendicular to the lower surface 30 b of the battery module 30. That is, the fitting protrusion 30 </ b> B protrudes from the lower surface 30 b of the battery module 30 along the thickness direction of the battery module 30.

嵌合突起３０Ａと嵌合突起３０Ｂは、電池モジュール３０を平面視した場合に互いに重なり合う位置（対向する位置）に設けられている。
嵌合突起３０Ａおよび嵌合突起３０Ｂの数は、特に限定されず、筐体２０内に収容される電池モジュール３０の数や大きさ等に応じて適宜調整される。嵌合突起３０Ａおよび嵌合突起３０Ｂが複数設けられる場合、嵌合突起３０Ａおよび嵌合突起３０Ｂは、電池モジュール３０の長手方向に沿って設けられる。電池モジュール３０同士をバランスよく安定に積層するためには、電池モジュール３０の上面３０ａにおいて嵌合突起３０Ａが等間隔に設けられ、電池モジュール３０の下面３０ｂにおいて嵌合突起３０Ｂが等間隔に設けられることが好ましい。 The fitting protrusion 30A and the fitting protrusion 30B are provided at positions that overlap each other (positions facing each other) when the battery module 30 is viewed in plan.
The numbers of the fitting protrusions 30 </ b> A and the fitting protrusions 30 </ b> B are not particularly limited, and are appropriately adjusted according to the number and size of the battery modules 30 accommodated in the housing 20. When a plurality of fitting protrusions 30 </ b> A and fitting protrusions 30 </ b> B are provided, the fitting protrusions 30 </ b> A and the fitting protrusions 30 </ b> B are provided along the longitudinal direction of the battery module 30. In order to stably and stably stack the battery modules 30, the fitting protrusions 30A are provided at equal intervals on the upper surface 30a of the battery module 30, and the fitting protrusions 30B are provided at equal intervals on the lower surface 30b of the battery module 30. It is preferable.

嵌合突起３０Ａおよび嵌合突起３０Ｂの平面視形状は、円形状に限定されない。嵌合突起３０Ａおよび嵌合突起３０Ｂの平面視形状は、例えば、楕円形状、半円形状、三角形状、正方形状、長方形状等であってもよい。   The planar view shapes of the fitting protrusion 30A and the fitting protrusion 30B are not limited to a circular shape. The planar view shape of the fitting protrusion 30A and the fitting protrusion 30B may be, for example, an elliptical shape, a semicircular shape, a triangular shape, a square shape, a rectangular shape, or the like.

嵌合突起３０Ａの電池モジュール３０の上面３０ａを基準とする高さ、および、嵌合突起３０Ｂの電池モジュール３０の下面３０ｂを基準とする高さは、特に限定されず、電池モジュール３０の大きさ等に応じて適宜調整される。   The height of the fitting protrusion 30A with respect to the upper surface 30a of the battery module 30 and the height of the fitting protrusion 30B with respect to the lower surface 30b of the battery module 30 are not particularly limited, and the size of the battery module 30 is not limited. It adjusts suitably according to etc.

第１モジュール保持部材５１および第２モジュール保持部材５２は、図１に示すように、平面視長方形状をなしている。また、第１モジュール保持部材５１は、電池モジュール３０の嵌合突起３０Ａに対応する位置に、嵌合突起３０Ａを嵌合する嵌合穴５３が設けられている。第２モジュール保持部材５２は、電池モジュール３０の嵌合突起３０Ｂに対応する位置に、嵌合突起３０Ｂを嵌合する嵌合穴５４が設けられている。   As shown in FIG. 1, the first module holding member 51 and the second module holding member 52 have a rectangular shape in plan view. Further, the first module holding member 51 is provided with a fitting hole 53 for fitting the fitting protrusion 30 </ b> A at a position corresponding to the fitting protrusion 30 </ b> A of the battery module 30. The second module holding member 52 is provided with a fitting hole 54 for fitting the fitting protrusion 30B at a position corresponding to the fitting protrusion 30B of the battery module 30.

嵌合穴５３および嵌合穴５４の数は、特に限定されず、嵌合突起３０Ａおよび嵌合突起３０Ｂの数に応じて適宜調整される。嵌合穴５３および嵌合穴５４が複数設けられる場合、嵌合穴５３および嵌合穴５４は、第１モジュール保持部材５１および第２モジュール保持部材５２の長手方向に沿って設けられている。また、嵌合穴５３および嵌合穴５４が複数設けられる場合、嵌合穴５３および嵌合穴５４は等間隔に設けられることが好ましい。   The numbers of the fitting holes 53 and the fitting holes 54 are not particularly limited, and are appropriately adjusted according to the number of the fitting protrusions 30A and the fitting protrusions 30B. When a plurality of fitting holes 53 and fitting holes 54 are provided, the fitting holes 53 and the fitting holes 54 are provided along the longitudinal direction of the first module holding member 51 and the second module holding member 52. When a plurality of fitting holes 53 and fitting holes 54 are provided, the fitting holes 53 and the fitting holes 54 are preferably provided at equal intervals.

第１モジュール保持部材５１に設けられた嵌合穴５３に、積層体４０の最上層をなす電池モジュール３０の嵌合突起３０Ａが嵌合される。また、第２モジュール保持部材５２に設けられた嵌合穴５４に、積層体４０の最下層をなす電池モジュール３０の嵌合突起３０Ｂが嵌合される。これにより、第１モジュール保持部材５１および第２モジュール保持部材５２を介して、筐体２０内に積層体４０が固定される。   The fitting protrusion 30 </ b> A of the battery module 30 that forms the uppermost layer of the stacked body 40 is fitted into the fitting hole 53 provided in the first module holding member 51. Further, the fitting protrusion 30 </ b> B of the battery module 30 that forms the lowermost layer of the stacked body 40 is fitted into the fitting hole 54 provided in the second module holding member 52. Thereby, the laminated body 40 is fixed in the housing 20 via the first module holding member 51 and the second module holding member 52.

第２モジュール保持部材５２は、筐体２０の内底面２０ａに固定されていることが好ましい。第２モジュール保持部材５２を、筐体２０の内底面２０ａに固定する手段は、特に限定されず、例えば、ネジ止め、溶接等が挙げられる。
第２モジュール保持部材５２を、筐体２０の内底面２０ａに固定すれば、第２モジュール保持部材５２を介して、筐体２０内に積層体４０をより強固に固定することができる。 The second module holding member 52 is preferably fixed to the inner bottom surface 20 a of the housing 20. The means for fixing the second module holding member 52 to the inner bottom surface 20a of the housing 20 is not particularly limited, and examples thereof include screwing and welding.
If the second module holding member 52 is fixed to the inner bottom surface 20 a of the housing 20, the stacked body 40 can be more firmly fixed in the housing 20 via the second module holding member 52.

また、積層体４０Ａの上面、すなわち、積層体４０Ａの最上層をなす電池モジュール３０の上面３０ａに、蓄電池ユニット１０を制御する制御ユニット６０が配置されていてもよい。制御ユニット６０が配置される場合、制御ユニット６０の上面６０ａおよび下面６０ｂには、電池モジュール３０の嵌合突起３０Ａ，３０Ｂと同様の嵌合突起が設けられる。すなわち、制御ユニット６０に設けられる嵌合突起は、電池モジュール３０の嵌合突起３０Ａ，３２に嵌合可能であるとともに、第１モジュール保持部材５１の嵌合穴５３にも嵌合可能である。   Further, a control unit 60 that controls the storage battery unit 10 may be disposed on the upper surface of the stacked body 40A, that is, the upper surface 30a of the battery module 30 that forms the uppermost layer of the stacked body 40A. When the control unit 60 is disposed, fitting protrusions similar to the fitting protrusions 30 </ b> A and 30 </ b> B of the battery module 30 are provided on the upper surface 60 a and the lower surface 60 b of the control unit 60. That is, the fitting protrusion provided on the control unit 60 can be fitted into the fitting protrusions 30 </ b> A and 32 of the battery module 30 and can also be fitted into the fitting hole 53 of the first module holding member 51.

筐体２０は、図１に示すように、内部に電池モジュール３０を固定するための、レールやレール溝等の固定構造を有さない。   As shown in FIG. 1, the housing 20 does not have a fixing structure such as a rail or a rail groove for fixing the battery module 30 therein.

電池モジュール３０の構成は、特に限定されない。例えば、図３に示すように、電池モジュール３０はシート状（板状）に形成されている。電池モジュール３０は、蓄電体３１と、蓄電体３１を収容する外装体３２と、外装体３２内に充填された電解質３３と、を備える。電池モジュール３０では、例えば、外装体３２に上記の嵌合突起３０Ａ，３０Ｂが設けられる。   The configuration of the battery module 30 is not particularly limited. For example, as shown in FIG. 3, the battery module 30 is formed in a sheet shape (plate shape). The battery module 30 includes a power storage unit 31, an exterior body 32 that houses the electrical storage body 31, and an electrolyte 33 that is filled in the exterior body 32. In the battery module 30, for example, the fitting protrusions 30 </ b> A and 30 </ b> B are provided on the exterior body 32.

蓄電体３１は、正極部３４および負極部３５が、電池モジュール３０の厚さ方向に交互に重ねられて構成されている。正極部３４は、正極シート（図示略）と、その主面に設けられた正極活物質層（図示略）とを備えている。負極部３５は、負極シート（図示略）と、その主面に設けられた負極活物質層（図示略）とを備えている。
正極部３４と負極部３５との間には、セパレータ３６が配置されている。すなわち、正極部３４、セパレータ３６、負極部３５、セパレータ３６、正極部３４、・・・、の順に積層することで、蓄電体３１が構成されている。 The power storage unit 31 is configured by alternately stacking positive electrode portions 34 and negative electrode portions 35 in the thickness direction of the battery module 30. The positive electrode portion 34 includes a positive electrode sheet (not shown) and a positive electrode active material layer (not shown) provided on the main surface thereof. The negative electrode part 35 includes a negative electrode sheet (not shown) and a negative electrode active material layer (not shown) provided on the main surface thereof.
A separator 36 is disposed between the positive electrode part 34 and the negative electrode part 35. That is, the power storage unit 31 is configured by stacking the positive electrode part 34, the separator 36, the negative electrode part 35, the separator 36, the positive electrode part 34,.

正極シートとしては、アルミニウム箔等を用いることができる。正極活物質層には、一般式「ＬｉＭｘＯｙ（式中、Ｍは金属であり；ｘおよびｙは、金属Ｍと酸素Ｏとの組成比である）」で表される金属酸リチウム化合物等が用いられる。このような金属酸リチウム化合物としては、コバルト酸リチウム（ＬｉＣｏＯ２）、ニッケル酸リチウム（ＬｉＮｉＯ２）等が例示できる。
負極シートとしては、銅箔等を用いることができる。負極活物質層には、黒鉛（グラファイト）や酸化ケイ素等が用いられる。
セパレータ３６の材質は特に限定されないが、微多孔性の高分子膜、不織布、ガラスファイバー等が挙げられる。 An aluminum foil or the like can be used as the positive electrode sheet. The positive electrode active material layer has a lithium metal oxide compound represented by the general formula “LiM x O y (wherein M is a metal; x and y are composition ratios of metal M and oxygen O)” Etc. are used. Examples of such a metal acid lithium compound include lithium cobaltate (LiCoO 2 ) and lithium nickelate (LiNiO 2 ).
A copper foil or the like can be used as the negative electrode sheet. For the negative electrode active material layer, graphite (graphite), silicon oxide, or the like is used.
Although the material of the separator 36 is not specifically limited, A microporous polymer film, a nonwoven fabric, glass fiber etc. are mentioned.

外装体３２の構成は、特に限定されない。外装体３２は、例えば、内層側から変性ＰＰ（ポリプロピレン）層、アルミニウム層、ナイロン層、およびＰＥＴ（ポリエチレンテレフタレート）層が積層された第１積層フィルム３７および第２積層フィルム３８を有している。
第１積層フィルム３７の変性ＰＰ層の縁部と第２積層フィルム３８の変性ＰＰ層の縁部とが溶着することで、外装体３２が袋状に構成される。 The configuration of the exterior body 32 is not particularly limited. The package 32 includes, for example, a first laminated film 37 and a second laminated film 38 in which a modified PP (polypropylene) layer, an aluminum layer, a nylon layer, and a PET (polyethylene terephthalate) layer are laminated from the inner layer side. .
The exterior body 32 is formed in a bag shape by welding the edge of the modified PP layer of the first laminated film 37 and the edge of the modified PP layer of the second laminated film 38.

電解質３３は特に限定されず、例えば、公知のリチウムイオン二次電池で用いられる電解質、電解液等が適用可能である。電解液としては、有機溶媒に電解質塩を溶解した混合溶液を例示できる。
電池モジュール３０は、図示しない一対のタブ（端子）を備えている。電池モジュール３０は、一対のタブを通して充電したり放電したりすることができる。
電池モジュール３０は、１枚または複数枚の質量が、例えば、数１０ｋｇや１００ｋｇ等と、比較的重い。 The electrolyte 33 is not particularly limited, and for example, an electrolyte, an electrolytic solution, and the like used in a known lithium ion secondary battery can be applied. Examples of the electrolytic solution include a mixed solution in which an electrolyte salt is dissolved in an organic solvent.
The battery module 30 includes a pair of tabs (terminals) not shown. The battery module 30 can be charged and discharged through a pair of tabs.
The battery module 30 has a relatively heavy mass, for example, several tens of kg or 100 kg.

本実施形態の蓄電池ユニット１０によれば、電池モジュール３０は、第１モジュール保持部材５１と第２モジュール保持部材５２の間にて、電池モジュール３０の上面３０ａおよび下面３０ｂに設けられた嵌合突起３０Ａ，３０Ｂを互いに嵌合することによって積層され、第１モジュール保持部材５１の嵌合穴５３に、積層体４０の最上層をなす電池モジュール３０の嵌合突起３０Ａが嵌合され、第２モジュール保持部材５２の嵌合穴５４に、積層体４０の最下層をなす電池モジュール３０の嵌合突起３０Ｂが嵌合され、第１モジュール保持部材５１および第２モジュール保持部材５２を介して、筐体２０に積層体４０が固定されているため、従来のように、筐体２０内に積層体４０を固定するためのレールやレール溝等の複雑な構造が不要となる。これにより、家具や内装の中等の狭い空間においても、筐体２０内に電池モジュール３０を容易に収容し、固定することができる。   According to the storage battery unit 10 of the present embodiment, the battery module 30 includes a fitting protrusion provided on the upper surface 30a and the lower surface 30b of the battery module 30 between the first module holding member 51 and the second module holding member 52. The fitting protrusions 30A of the battery module 30 forming the uppermost layer of the laminated body 40 are fitted into the fitting holes 53 of the first module holding member 51, and the second module 30A and 30B are laminated. The fitting protrusion 30B of the battery module 30 that forms the lowermost layer of the stacked body 40 is fitted into the fitting hole 54 of the holding member 52, and the housing is formed via the first module holding member 51 and the second module holding member 52. Since the laminated body 40 is fixed to 20, a complicated structure such as a rail or a rail groove for fixing the laminated body 40 in the housing 20 is not required as in the prior art. It made. Thereby, the battery module 30 can be easily accommodated and fixed in the housing 20 even in a narrow space such as in furniture or interior.

本実施形態では、筐体２０内に、積層体４０が２つ収容されている場合を例示したが、本発明はこれに限定されない。本発明にあっては、筐体内に収容される、複数の電池モジュールからなる積層体は１つであってもよい。   In this embodiment, although the case where the two laminated bodies 40 are accommodated in the housing | casing 20 was illustrated, this invention is not limited to this. In the present invention, the number of the stacked bodies made up of a plurality of battery modules housed in the housing may be one.

１０・・・蓄電池ユニット、２０・・・筐体、３０・・・電池モジュール、３０Ａ，３０Ｂ・・・嵌合突起、３１・・・蓄電体、３２・・・外装体、３３・・・電解質、３４・・・正極部、３５・・・負極部、３６・・・セパレータ、３７・・・第１積層フィルム、３８・・・第２積層フィルム、４０・・・積層体、５１・・・第１モジュール保持部材（モジュール保持部材）、５２・・・第２モジュール保持部材（モジュール保持部材）、５３，５４・・・嵌合穴、６０・・・制御ユニット。 DESCRIPTION OF SYMBOLS 10 ... Storage battery unit, 20 ... Housing, 30 ... Battery module, 30A, 30B ... Fitting protrusion, 31 ... Power storage unit, 32 ... Exterior body, 33 ... Electrolyte 34 ... Positive electrode part, 35 ... Negative electrode part, 36 ... Separator, 37 ... First laminated film, 38 ... Second laminated film, 40 ... Laminated body, 51 ... First module holding member (module holding member), 52... Second module holding member (module holding member), 53, 54... Fitting hole, 60.

Claims (4)

筐体と、該筐体内にて積層されて収容される複数の電池モジュールと、前記筐体内にて前記電池モジュールからなる積層体を、該積層体の上面側および下面側から保持する一対のモジュール保持部材と、を備え、
前記電池モジュールは、前記一対のモジュール保持部材の間にて、前記電池モジュールの上面および下面に設けられた嵌合突起を互いに嵌合することによって積層され、
前記積層体の上面側に配置される前記一対のモジュール保持部材の一方に設けられた嵌合穴に、前記積層体の最上層をなす前記電池モジュールの嵌合突起が嵌合され、
前記積層体の下面側に配置される前記一対のモジュール保持部材の他方に設けられた嵌合穴に、前記積層体の最下層をなす前記電池モジュールの嵌合突起が嵌合され、
前記一対のモジュール保持部材を介して、前記筐体内に前記積層体が固定されていることを特徴とする蓄電池ユニット。 A pair of modules that hold a casing, a plurality of battery modules that are stacked and accommodated in the casing, and a stacked body that includes the battery modules in the casing from the upper surface side and the lower surface side of the stacked body A holding member,
The battery module is laminated by fitting fitting protrusions provided on an upper surface and a lower surface of the battery module between the pair of module holding members,
A fitting protrusion of the battery module forming the uppermost layer of the laminate is fitted into a fitting hole provided in one of the pair of module holding members arranged on the upper surface side of the laminate,
The fitting protrusion of the battery module that forms the lowermost layer of the laminated body is fitted into the fitting hole provided in the other of the pair of module holding members arranged on the lower surface side of the laminated body,
The storage battery unit, wherein the stacked body is fixed in the housing via the pair of module holding members. 前記一対のモジュール保持部材の他方が前記筐体の内底面に固定されたことを特徴とする請求項１に記載の蓄電池ユニット。   The storage battery unit according to claim 1, wherein the other of the pair of module holding members is fixed to an inner bottom surface of the casing. 前記積層体を複数有することを特徴とする請求項１または２に記載の蓄電池ユニット。   The storage battery unit according to claim 1, comprising a plurality of the stacked bodies. 前記積層体の上面に、制御ユニットが配置されたことを特徴とする請求項１〜３のいずれか１項に記載の蓄電池ユニット。   The storage battery unit according to claim 1, wherein a control unit is disposed on an upper surface of the stacked body.
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