JP2016213104A - Battery pack - Google Patents

Battery pack Download PDF

Info

Publication number
JP2016213104A
JP2016213104A JP2015097130A JP2015097130A JP2016213104A JP 2016213104 A JP2016213104 A JP 2016213104A JP 2015097130 A JP2015097130 A JP 2015097130A JP 2015097130 A JP2015097130 A JP 2015097130A JP 2016213104 A JP2016213104 A JP 2016213104A
Authority
JP
Japan
Prior art keywords
housing
array
battery
elastic body
battery pack
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.)
Granted
Application number
JP2015097130A
Other languages
Japanese (ja)
Other versions
JP6728576B2 (en
Inventor
文彦 石黒
Fumihiko Ishiguro
文彦 石黒
加藤　崇行
Takayuki Kato
崇行 加藤
浩生 植田
Hiromi Ueda
浩生 植田
直人 守作
Naoto Morisaku
直人 守作
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Industries Corp
Original Assignee
Toyota Industries Corp
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 Toyota Industries Corp filed Critical Toyota Industries Corp
Priority to JP2015097130A priority Critical patent/JP6728576B2/en
Publication of JP2016213104A publication Critical patent/JP2016213104A/en
Application granted granted Critical
Publication of JP6728576B2 publication Critical patent/JP6728576B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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

Abstract

PROBLEM TO BE SOLVED: To provide a battery pack capable of securing heat radiation performance of a battery cell with a simple configuration even when a battery module having the battery cell housed in a housing is used.SOLUTION: A battery pack 1 has a battery module 3 accommodated in a housing 2. The battery module 3 is configured by housing, in a housing 14, an array body 13 in which plural battery cells 11 and an elastic body 12 are arranged. The housing 14 has an opening surface 23 in a direction intersecting to the arrangement direction of the battery cells 11 in the array body 13. The housing 14 is fixed to the housing 2 so that the opening face 23 faces the wall portion 4 side of the housing 2 and the array body 13 contacts the bottom surface 21 of the housing 2 on the opening face 23.SELECTED DRAWING: Figure 1

Description

本発明は、電池パックに関する。   The present invention relates to a battery pack.

電池パックは、例えば特許文献１に開示されているように、筐体内に複数の電池モジュールを収容することによって構成されている。この従来の構成では、一対のブラケットが用いられ、ボルト締めによって電池モジュールが筐体の内壁面に固定されている。また、電池モジュールを構成する電池セルは、例えば特許文献２に記載の電池のようにハウジング内に収容される場合がある。この従来の構成では、ハウジング内に弾性スペーサを配置することで、ハウジング内の電池群に加わる外圧のばらつきを抑えている。   The battery pack is configured by housing a plurality of battery modules in a housing, as disclosed in Patent Document 1, for example. In this conventional configuration, a pair of brackets are used, and the battery module is fixed to the inner wall surface of the casing by bolting. Moreover, the battery cell which comprises a battery module may be accommodated in a housing like the battery of patent document 2, for example. In this conventional configuration, by disposing an elastic spacer in the housing, variations in external pressure applied to the battery group in the housing are suppressed.

特開２０１４−１２０３４０号公報JP, 2014-120340, A 実開昭５９−１０１３５５号公報Japanese Utility Model Publication No.59-101355

ハウジング内に電池セルを収容してなる電池モジュールを筐体に固定して電池パックを構成する場合、ハウジングによって電池モジュールの耐衝撃性を向上できる一方、電池モジュールに含まれる電池セルの放熱性の確保が課題となる。また、電池パックでは、筐体内に複数の電池モジュールが収容されるので、レイアウトが制限されないように電池モジュールの構成の複雑化を避ける必要もある。   When the battery module is configured by fixing the battery module containing the battery cell in the housing to the casing, the impact resistance of the battery module can be improved by the housing, while the heat dissipation of the battery cell included in the battery module can be improved. Ensuring is an issue. In addition, since a plurality of battery modules are accommodated in the casing in the battery pack, it is necessary to avoid complication of the configuration of the battery modules so that the layout is not limited.

本発明は、上記課題の解決のためになされたものであり、ハウジング内に電池セルを収容してなる電池モジュールを用いる場合でも、簡単な構成で電池セルの放熱性を確保できる電池パックを提供することを目的とする。   The present invention has been made to solve the above-described problems, and provides a battery pack that can ensure heat dissipation of battery cells with a simple configuration even when a battery module that houses battery cells in a housing is used. The purpose is to do.

上記課題の解決のため、本発明の一側面に係る電池パックは、筐体内に電池モジュールを収容してなる電池パックであって、電池モジュールは、複数の電池セルと弾性体とを配列してなる配列体をハウジング内に収容して構成され、ハウジングは、配列体における電池セルの配列方向に交差する方向に開口面を有し、開口面が筐体の壁面側を向き、開口面において配列体が筐体の壁面に接するようにハウジングが筐体に固定されている。   In order to solve the above problems, a battery pack according to one aspect of the present invention is a battery pack in which a battery module is accommodated in a housing, and the battery module includes a plurality of battery cells and an elastic body. The housing is configured to be housed in a housing, and the housing has an opening surface in a direction intersecting the arrangement direction of the battery cells in the array, the opening surface faces the wall surface side of the housing, and the housing is arranged on the opening surface. The housing is fixed to the housing such that the body contacts the wall surface of the housing.

この電池パックでは、配列体が収容されたハウジングにおいて、配列体における電池セルの配列方向に交差する方向に開口面が設けられている。そして、開口面が筐体の壁面側を向くようにハウジングが筐体に固定され、開口面において配列体が筐体の壁面に接した状態となっている。このように、配列体と筐体の壁面とが接する構成により、筐体の壁面を介して配列体の各電池セルの熱を効率的に放熱できる。また、この構成は、ハウジングに開口面を設けることで実現できるので、構成の複雑化も回避できる。したがって、筐体内での電池モジュールのレイアウトが制限されることもない。   In this battery pack, in the housing in which the array body is accommodated, an opening surface is provided in a direction intersecting the array direction of the battery cells in the array body. The housing is fixed to the housing such that the opening surface faces the wall surface of the housing, and the array is in contact with the wall surface of the housing on the opening surface. Thus, the structure which the array body and the wall surface of a housing | casing contact | connect can dissipate the heat | fever of each battery cell of an array body efficiently through the wall surface of a housing | casing. In addition, since this configuration can be realized by providing an opening surface in the housing, it is possible to avoid complication of the configuration. Therefore, the layout of the battery module in the housing is not limited.

また、配列体は、開口面側に弾性体を有し、当該弾性体を介して筐体の壁面に接していてもよい。この場合、弾性体を介することで、配列体と筐体の壁面との間に隙間が生じることを抑制できる。これにより、配列体と筐体の壁面との間の熱伝導が空気層などによって阻害されることが抑制され、電池セルの放熱性を一層確保できる。   The array may have an elastic body on the opening surface side and may be in contact with the wall surface of the housing via the elastic body. In this case, it can suppress that a clearance gap produces between an array body and the wall surface of a housing | casing by passing an elastic body. Thereby, it is suppressed that the heat conduction between the array body and the wall surface of the housing is inhibited by the air layer or the like, and the heat dissipation of the battery cell can be further secured.

また、ハウジングは、配列体を挟んで開口面の反対面側に壁面を有し、配列体は、開口面の反対面側に弾性体を有し、当該弾性体を介してハウジングの壁面に接していてもよい。この場合、弾性体によってハウジングと配列体との間のがたつきを抑えることが可能となる。   Further, the housing has a wall surface on the opposite side of the opening surface across the array body, and the array body has an elastic body on the opposite surface side of the opening surface, and is in contact with the wall surface of the housing via the elastic body. It may be. In this case, rattling between the housing and the array can be suppressed by the elastic body.

本発明の一側面によれば、ハウジング内に電池セルを収容してなる電池モジュールを用いる場合でも、簡単な構成で電池セルの放熱性を確保できる。   According to one aspect of the present invention, even when a battery module in which a battery cell is accommodated in a housing is used, heat dissipation of the battery cell can be ensured with a simple configuration.

本発明の一実施形態に係る電池パックの構成を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the structure of the battery pack which concerns on one Embodiment of this invention. 本発明の変形例に係る電池パックの構成を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the structure of the battery pack which concerns on the modification of this invention. 本発明の別の変形例に係る電池パックの構成を示す要部拡大断面図である。It is a principal part expanded sectional view which shows the structure of the battery pack which concerns on another modification of this invention.

以下、図面を参照しながら、本発明の一側面に係る電池パックの好適な実施形態について詳細に説明する。   Hereinafter, preferred embodiments of a battery pack according to one aspect of the present invention will be described in detail with reference to the drawings.

図１は、本発明の一実施形態に係る電池パックの構成を示す要部拡大断面図である。   FIG. 1 is an enlarged cross-sectional view of a main part showing a configuration of a battery pack according to an embodiment of the present invention.

図１に示すように、電池パック１は、筐体２内に複数の電池モジュール３が収容されることによって構成されている。電池パック１は、例えばフォークリフトのバッテリーとして機能する蓄電装置である。また、電池パック１は、フォークリフトのカウンタウエイトとしても機能し、カウンタウエイトとしての重量を調整するために、筐体２の外側に追加のウエイト部材が固定されていてもよい。なお、図１では、筐体２の内部の電池モジュール３及び電池モジュール３の固定構造のみを図示しており、配線及び制御機器等の他の部材を省略している。   As shown in FIG. 1, the battery pack 1 is configured by housing a plurality of battery modules 3 in a housing 2. The battery pack 1 is a power storage device that functions as a battery for a forklift, for example. The battery pack 1 also functions as a counterweight for a forklift, and an additional weight member may be fixed to the outside of the housing 2 in order to adjust the weight as the counterweight. In FIG. 1, only the battery module 3 inside the housing 2 and the fixing structure of the battery module 3 are illustrated, and other members such as wiring and control equipment are omitted.

筐体２は、例えば鉄などの金属材料によって形成され、略直方体の箱状をなしている。筐体２の内部は、複数の電池モジュール３、配線、制御機器等の配置空間となっている。筐体２は、例えば一部が開口する本体部と蓋部とによって形成され、配置空間内の気密性及び水密性が保たれるように蓋部が本体部の開口に対して取り付けられている。筐体２の壁部４の内面（壁面）４ａ側には、電池モジュール３の固定に用いるネジ部材２４（後述）が螺合されるネジ孔５が所定の位置に設けられている。   The housing | casing 2 is formed, for example with metal materials, such as iron, and has comprised the substantially rectangular parallelepiped box shape. Inside the housing 2 is an arrangement space for a plurality of battery modules 3, wiring, control equipment, and the like. The housing 2 is formed of, for example, a main body portion and a lid portion that are partially opened, and the lid portion is attached to the opening of the main body portion so that airtightness and watertightness in the arrangement space are maintained. . On the inner surface (wall surface) 4a side of the wall portion 4 of the housing 2, a screw hole 5 into which a screw member 24 (described later) used for fixing the battery module 3 is screwed is provided at a predetermined position.

電池モジュール３は、複数（本実施形態では７体）の電池セル１１と弾性体１２とを配列してなる配列体１３と、配列体１３を収容するハウジング１４とによって構成されている。電池セル１１は、例えばリチウムイオン二次電池である。電池セル１１は、略直方体をなす中空のケース１５内に電極組立体及び電解液を収容してなる。電極組立体は、正極、負極、及びセパレータの積層体によって形成されている。本実施形態では、例えば袋状のセパレータによって包まれた正極と負極とを交互に積層して電極組立体が形成されている。   The battery module 3 includes an array body 13 in which a plurality (seven bodies in this embodiment) of battery cells 11 and an elastic body 12 are arrayed, and a housing 14 that houses the array body 13. The battery cell 11 is, for example, a lithium ion secondary battery. The battery cell 11 is formed by housing an electrode assembly and an electrolytic solution in a hollow case 15 having a substantially rectangular parallelepiped shape. The electrode assembly is formed by a laminate of a positive electrode, a negative electrode, and a separator. In the present embodiment, for example, an electrode assembly is formed by alternately laminating positive and negative electrodes wrapped by a bag-like separator.

ケース１５の頂面には、正極端子及び負極端子が設けられている。配列体１３において隣り合う電池セル１１，１１は、極性の異なる端子が隣り合うように配列され、バスバーによって極性の異なる端子同士を結合することによって電気的に直列に接続されている。   A positive terminal and a negative terminal are provided on the top surface of the case 15. The adjacent battery cells 11 and 11 in the array 13 are arranged so that terminals having different polarities are adjacent to each other, and are electrically connected in series by connecting terminals having different polarities with a bus bar.

弾性体１２は、配列体１３の各電池セル１１に拘束荷重を付加する部材である。また、弾性体１２は、電池セル１１に膨張が生じた場合などに、拘束荷重による電池セル１１の破損を防止する部材である。弾性体１２は、例えばウレタン製のゴムスポンジによって矩形の板状に形成され、配列体１３における配列方向の一端側の端部に配置されている。弾性体１２の形成材料としては、例えばエチレンプロピレンジエンゴム（ＥＰＤＭ）、クロロプレンゴム、シリコンゴムなどが挙げられる。   The elastic body 12 is a member that applies a restraining load to each battery cell 11 of the array body 13. The elastic body 12 is a member that prevents the battery cell 11 from being damaged by a restraining load when the battery cell 11 is expanded. The elastic body 12 is formed in a rectangular plate shape by, for example, urethane rubber sponge, and is disposed at one end of the array body 13 in the array direction. Examples of the material for forming the elastic body 12 include ethylene propylene diene rubber (EPDM), chloroprene rubber, and silicon rubber.

ハウジング１４は、配列体１３を保護すると共に、配列体１３を筐体２に固定する部材である。ハウジング１４は、配列体１３の形状に対応する略直方体の箱状の本体部１６と、筐体２への固定に用いられる一対のブラケット１７，１７とを有している。本体部１６及びブラケット１７，１７は、例えば鉄などを鋳造することによって一体的に形成されている。   The housing 14 is a member that protects the array body 13 and fixes the array body 13 to the housing 2. The housing 14 has a substantially rectangular parallelepiped box-shaped main body 16 corresponding to the shape of the array 13 and a pair of brackets 17 and 17 used for fixing to the housing 2. The main body 16 and the brackets 17 and 17 are integrally formed, for example, by casting iron or the like.

本体部１６は、底面（壁面）２１と、長手方向の一対の端面２２，２２と、幅方向（図１の奥行方向）の一対の側面（不図示）とを有している。本体部１６は、配列体１３における電池セル１１の配列方向に交差する方向に開口面２３を有している。本実施形態では、底面２１の対向面側の略全面が開口面２３となっている。このため、各電池セル１１の正極端子及び負極端子を図１の奥行方向に向けた状態で配列体１３を本体部１６内に収容すると、配列体１３の一側面（配列方向の端面に交差する側面の一方）１３ａ側の全体が開口面２３から露出するようになっている。   The main body 16 has a bottom surface (wall surface) 21, a pair of end surfaces 22, 22 in the longitudinal direction, and a pair of side surfaces (not shown) in the width direction (depth direction in FIG. 1). The main body portion 16 has an opening surface 23 in a direction intersecting with the arrangement direction of the battery cells 11 in the array body 13. In the present embodiment, the substantially entire surface on the opposite surface side of the bottom surface 21 is the opening surface 23. Therefore, when the array body 13 is accommodated in the main body 16 with the positive electrode terminal and the negative electrode terminal of each battery cell 11 oriented in the depth direction in FIG. 1, one side surface of the array body 13 (crosses the end surface in the array direction). One of the side surfaces 13a is exposed from the opening surface 23.

ブラケット１７は、本体部１６における長手方向の端面２２の外面側において、開口面２３側の縁部に形成されている。ブラケット１７には、電池モジュール３の固定に用いるネジ部材２４が挿通する挿通孔２５が設けられている。筐体２の壁部４のネジ孔５とブラケット１７の挿通孔２５とを位置合わせし、挿通孔２５を通したネジ部材２４をネジ孔５に螺合することにより、ハウジング１４が筐体２の壁部４の内面４ａに固定されている。   The bracket 17 is formed at an edge portion on the opening surface 23 side on the outer surface side of the end surface 22 in the longitudinal direction of the main body portion 16. The bracket 17 is provided with an insertion hole 25 through which a screw member 24 used for fixing the battery module 3 is inserted. By aligning the screw hole 5 of the wall portion 4 of the housing 2 with the insertion hole 25 of the bracket 17 and screwing the screw member 24 through the insertion hole 25 into the screw hole 5, the housing 14 becomes the housing 2. It is being fixed to the inner surface 4a of the wall part 4 of this.

続いて、上述した電池パック１における筐体２と電池モジュール３との固定構造について更に詳細に説明する。   Next, the structure for fixing the housing 2 and the battery module 3 in the battery pack 1 described above will be described in more detail.

筐体２と電池モジュール３との固定にあたって、図１に示すように、配列体１３には、シート状の弾性体３１が設けられている。弾性体３１は、例えば配列体１３の弾性体１２と同様に、例えばエチレンプロピレンジエンゴム（ＥＰＤＭ）、クロロプレンゴム、シリコンゴムなどによって形成されている。弾性体３１は、例えば開口面２３の形状と同寸法の長方形状をなしており、配列体１３の一側面１３ａの略全面と、他側面１３ｂの略全面とを覆うようにそれぞれ配置されている。なお、弾性体３１と配列体１３の一側面１３ａ及び他側面１３ｂとは、接着等によって固定されていてもよい。   In fixing the housing 2 and the battery module 3, as shown in FIG. 1, the array body 13 is provided with a sheet-like elastic body 31. The elastic body 31 is formed of, for example, ethylene propylene diene rubber (EPDM), chloroprene rubber, silicon rubber, or the like, similarly to the elastic body 12 of the array 13. The elastic bodies 31 have, for example, a rectangular shape having the same dimensions as the shape of the opening surface 23, and are arranged so as to cover substantially the entire surface of one side surface 13a of the array 13 and the substantially entire surface of the other side surface 13b. . The elastic body 31 and the one side surface 13a and the other side surface 13b of the array body 13 may be fixed by adhesion or the like.

弾性体３１を有する配列体１３は、例えば各電池セル１１の正極端子及び負極端子が図１における奥行方向手前側を向くようにしてハウジング１４の本体部１６内に収容されている。ハウジング１４に配列体１３を収容する際、弾性体１２が配列方向に所定量圧縮され、開口面２３から本体部１６内への配列体１３の配置が許容される。また、弾性体１２の反発力によって、配列体１３の各電池セル１１に対して配列方向に拘束荷重が付加される。   The array body 13 having the elastic bodies 31 is accommodated in the main body portion 16 of the housing 14 so that, for example, the positive terminals and the negative terminals of each battery cell 11 face the front side in the depth direction in FIG. When the array body 13 is accommodated in the housing 14, the elastic body 12 is compressed by a predetermined amount in the array direction, and the array body 13 is allowed to be disposed in the main body portion 16 from the opening surface 23. In addition, a restraining load is applied to the battery cells 11 of the array 13 in the array direction by the repulsive force of the elastic bodies 12.

収容状態において、配列体１３の一側面１３ａに設けられた弾性体３１は、ハウジング１４の開口面２３と略面一に位置し、他側面１３ｂに設けられた弾性体３１は、ハウジング１４の底面２１の内面２１ａ側に当接する。この状態で、開口面２３が筐体２の壁部４の内面４ａ側を向くようにハウジング１４が内面４ａに対して配置され、ネジ部材２４を挿通孔２５を通してネジ孔５に螺合することによってブラケット１７が筐体２の壁部４に固定される。これにより、電池パック１では、配列体１３の一側面１３ａが開口面２３において弾性体３１を介して筐体２の壁部４の内面４ａに接した状態となっており、配列体１３の他側面１３ｂが弾性体３１を介してハウジング１４の底面２１の内面２１ａ側に接した状態となっている。   In the accommodated state, the elastic body 31 provided on the one side surface 13 a of the array body 13 is substantially flush with the opening surface 23 of the housing 14, and the elastic body 31 provided on the other side surface 13 b is the bottom surface of the housing 14. 21 abuts on the inner surface 21a side. In this state, the housing 14 is arranged with respect to the inner surface 4a so that the opening surface 23 faces the inner surface 4a side of the wall 4 of the housing 2, and the screw member 24 is screwed into the screw hole 5 through the insertion hole 25. Thus, the bracket 17 is fixed to the wall portion 4 of the housing 2. Thus, in the battery pack 1, one side surface 13 a of the array body 13 is in contact with the inner surface 4 a of the wall portion 4 of the housing 2 via the elastic body 31 at the opening surface 23. The side surface 13 b is in contact with the inner surface 21 a side of the bottom surface 21 of the housing 14 through the elastic body 31.

以上説明したように、電池パック１では、配列体１３が収容されたハウジング１４において、配列体１３における電池セル１１の配列方向に交差する方向に開口面２３が設けられている。そして、開口面２３が筐体２の壁部４の内面４ａ側を向くようにハウジング１４が筐体２に固定され、開口面２３において配列体１３が内面４ａに接した状態となっている。このように、配列体１３と筐体２の壁部４の内面４ａとが接する構成により、筐体２の壁部４を介して配列体１３の各電池セル１１の熱を効率的に放熱できる。また、この構成は、ハウジング１４に開口面２３を設けることで実現できるので、構成の複雑化も回避できる。したがって、筐体２内での電池モジュール３のレイアウトが制限されることもない。   As described above, in the battery pack 1, in the housing 14 in which the array body 13 is accommodated, the opening surface 23 is provided in a direction intersecting the array direction of the battery cells 11 in the array body 13. The housing 14 is fixed to the housing 2 so that the opening surface 23 faces the inner surface 4a side of the wall 4 of the housing 2, and the array 13 is in contact with the inner surface 4a at the opening surface 23. As described above, the configuration in which the array 13 and the inner surface 4a of the wall 4 of the housing 2 are in contact with each other can efficiently dissipate the heat of the battery cells 11 of the array 13 through the wall 4 of the housing 2. . Further, this configuration can be realized by providing the housing 14 with the opening surface 23, so that the configuration can be prevented from becoming complicated. Therefore, the layout of the battery module 3 in the housing 2 is not limited.

また、電池パック１では、配列体１３の一側面１３ａ及び他側面１３ｂに弾性体３１が設けられている。そして、配列体１３は、弾性体３１を介して筐体２の壁部４の内面４ａに接すると共に、弾性体３１を介してハウジング１４の底面２１の内面２１ａに接している。このように、弾性体３１を介して配列体１３が筐体２の壁部４の内面４ａに接することで、配列体１３と筐体２の壁部４との間に隙間が生じることを抑制できる。この場合、配列体１３と筐体２の壁部４との間の熱伝導が空気層などによって阻害されることが抑制され、電池セル１１の放熱性を一層確保できる。   In the battery pack 1, elastic bodies 31 are provided on one side surface 13 a and the other side surface 13 b of the array body 13. The array 13 is in contact with the inner surface 4 a of the wall portion 4 of the housing 2 through the elastic body 31 and is in contact with the inner surface 21 a of the bottom surface 21 of the housing 14 through the elastic body 31. In this way, the arrangement body 13 is in contact with the inner surface 4 a of the wall portion 4 of the housing 2 via the elastic body 31, thereby suppressing a gap from being generated between the array body 13 and the wall portion 4 of the housing 2. it can. In this case, the heat conduction between the array 13 and the wall 4 of the housing 2 is suppressed from being inhibited by an air layer or the like, and the heat dissipation of the battery cell 11 can be further ensured.

また、弾性体３１を介して配列体１３がハウジング１４の底面２１の内面２１ａに接することで、ハウジング１４と配列体１３との間のがたつきを抑えることが可能となる。本実施形態のように、鉄などを鋳造してハウジング１４を形成する場合、底面２１の内面２１ａの平坦度が十分に得られないことがある。したがって、弾性体３１を用いてハウジング１４と配列体１３との間のがたつきを抑えることが特に有効となる。   In addition, since the array 13 is in contact with the inner surface 21 a of the bottom surface 21 of the housing 14 via the elastic body 31, rattling between the housing 14 and the array 13 can be suppressed. When the housing 14 is formed by casting iron or the like as in the present embodiment, the flatness of the inner surface 21a of the bottom surface 21 may not be sufficiently obtained. Therefore, it is particularly effective to suppress the rattling between the housing 14 and the array body 13 using the elastic body 31.

なお、弾性体３１を用いる場合、ブラケット１７が筐体２の壁部４に固定される際のネジ部材２４の締結力によって弾性体３１が厚み方向に所定量圧縮されることが好適である。この場合、弾性体３１の反発力によって弾性体３１と内面４ａとが密着するので、配列体１３と筐体２の壁部４との間に隙間が生じることを一層確実に抑制できる。また、弾性体３１の反発力によって弾性体３１と底面２１とが密着するので、ハウジング１４と配列体１３との間のがたつきを一層確実に抑えることができる。   When the elastic body 31 is used, it is preferable that the elastic body 31 is compressed by a predetermined amount in the thickness direction by the fastening force of the screw member 24 when the bracket 17 is fixed to the wall portion 4 of the housing 2. In this case, since the elastic body 31 and the inner surface 4a are brought into close contact by the repulsive force of the elastic body 31, it is possible to further reliably prevent a gap from being generated between the array body 13 and the wall portion 4 of the housing 2. Further, since the elastic body 31 and the bottom surface 21 come into close contact with each other due to the repulsive force of the elastic body 31, rattling between the housing 14 and the array body 13 can be more reliably suppressed.

また、本実施形態では、弾性体３１が配列体１３の一側面１３ａの略全面及び他側面１３ｂの略全面を覆うように配置されている。すなわち、弾性体３１は、配列体１３における各電池セル１１のケース１５の側面と、弾性体１２の側面とをいずれも覆うように配置されている。このような構成により、配列体１３の各電池セル１１が配列方向に膨張し、弾性体１２に圧縮が生じた場合でも、膨張した電池セル１１（特に弾性体１２に隣接する電池セル１１）と、筐体２の壁部４の内面４ａ及びハウジング１４の底面２１の内面２１ａとの間に弾性体３１を位置させることが可能となり、上述した作用効果を維持できる。   Moreover, in this embodiment, the elastic body 31 is arrange | positioned so that the substantially whole surface of the one side surface 13a and the other side surface 13b of the array body 13 may be covered. That is, the elastic body 31 is disposed so as to cover both the side surface of the case 15 of each battery cell 11 and the side surface of the elastic body 12 in the array 13. With such a configuration, even when each battery cell 11 of the array 13 expands in the array direction and the elastic body 12 is compressed, the expanded battery cell 11 (particularly, the battery cell 11 adjacent to the elastic body 12) and The elastic body 31 can be positioned between the inner surface 4a of the wall portion 4 of the housing 2 and the inner surface 21a of the bottom surface 21 of the housing 14, and the above-described effects can be maintained.

本発明は、上記実施形態に限られるものではない。例えば上述した実施形態では、配列体１３の一側面１３ａ側及び他側面１３ｂ側に弾性体３１を配置しているが、例えば図２に示すように、一側面１３ａには弾性体３１を設けず、他側面１３ｂのみに弾性体３１を設けるようにしてもよい。この場合、他側面１３ｂの弾性体３１によってハウジング１４と配列体１３との間のがたつきを抑えることができる。また、他側面１３ｂの弾性体３１が厚さ方向に圧縮することで、弾性体３１の反発力によって配列体１３が筐体２の壁部４側に付勢される。これにより、配列体１３が筐体２の壁部４に押し付けられて密着するので、電池セル１１の放熱性を十分に確保できる。   The present invention is not limited to the above embodiment. For example, in the above-described embodiment, the elastic bodies 31 are arranged on the one side surface 13a side and the other side surface 13b side of the array body 13, but the elastic body 31 is not provided on the one side surface 13a as shown in FIG. The elastic body 31 may be provided only on the other side surface 13b. In this case, rattling between the housing 14 and the array body 13 can be suppressed by the elastic body 31 on the other side surface 13b. Further, the elastic body 31 on the other side surface 13 b is compressed in the thickness direction, so that the array body 13 is biased toward the wall portion 4 side of the housing 2 by the repulsive force of the elastic body 31. As a result, the array 13 is pressed against and closely adheres to the wall 4 of the housing 2, so that the heat dissipation of the battery cell 11 can be sufficiently ensured.

また、例えば図３に示すように、他側面１３ｂには弾性体３１を設けず、一側面１３ａのみに弾性体３１を設けるようにしてもよい。この場合、一側面１３ａの弾性体３１によって配列体１３と筐体２の壁部４との間に隙間が生じることを抑制でき、電池セル１１の放熱性を十分に確保できる。また、一側面１３ａの弾性体３１が厚さ方向に圧縮することで、弾性体３１の反発力によって配列体１３がハウジング１４の底面２１側に付勢される。これにより、配列体１３が筐体２の底面２１に押し付けられて密着するので、ハウジング１４と配列体１３との間のがたつきを抑えることができる。   For example, as shown in FIG. 3, the elastic body 31 may be provided only on the one side surface 13a without providing the elastic body 31 on the other side surface 13b. In this case, it can suppress that a clearance gap produces between the array body 13 and the wall part 4 of the housing | casing 2 with the elastic body 31 of the one side surface 13a, and can fully ensure the heat dissipation of the battery cell 11. FIG. Further, the elastic body 31 of the one side surface 13 a is compressed in the thickness direction, so that the array body 13 is biased toward the bottom surface 21 side of the housing 14 by the repulsive force of the elastic body 31. As a result, the array 13 is pressed against and closely contacts the bottom surface 21 of the housing 2, so that rattling between the housing 14 and the array 13 can be suppressed.

いずれの形態においても、配列体１３において隣り合う電池セル１１，１１の間には、電池セル１１の放熱効率を向上させるために、伝熱プレートを介在させてもよい。また、配列体１３における弾性体１２の配列位置は、配列端でなくてもよく、いずれかの電池セル１１，１１間に配置してもよい。また、弾性体１２を複数配列させてもよい。さらに、ハウジング１４は、幅方向（図１の奥行方向）の一対の側面の一方側又は双方側が開口面となっていてもよい。   In any form, a heat transfer plate may be interposed between the battery cells 11 and 11 adjacent to each other in the array 13 in order to improve the heat dissipation efficiency of the battery cells 11. Further, the arrangement position of the elastic bodies 12 in the arrangement body 13 may not be the arrangement end, and may be arranged between any of the battery cells 11 and 11. A plurality of elastic bodies 12 may be arranged. Furthermore, the housing 14 may have an opening surface on one side or both sides of a pair of side surfaces in the width direction (the depth direction in FIG. 1).

１…電池パック、２…筐体、３…電池モジュール、４ａ…内面（筐体の壁面）、１１…電池セル、１２…弾性体、１３…配列体、１４…ハウジング、２１…底面（ハウジングの壁面）２３…開口面、３１…弾性体。   DESCRIPTION OF SYMBOLS 1 ... Battery pack, 2 ... Housing | casing, 3 ... Battery module, 4a ... Inner surface (wall surface of a housing | casing), 11 ... Battery cell, 12 ... Elastic body, 13 ... Array, 14 ... Housing, 21 ... Bottom surface (housing of housing) Wall surface) 23 ... opening surface, 31 ... elastic body.

Claims (3)

筐体内に電池モジュールを収容してなる電池パックであって、
前記電池モジュールは、複数の電池セルと弾性体とを配列してなる配列体をハウジング内に収容して構成され、
前記ハウジングは、前記配列体における前記電池セルの配列方向に交差する方向に開口面を有し、
前記開口面が前記筐体の壁面側を向き、前記開口面において前記配列体が前記筐体の前記壁面に接するように前記ハウジングが前記筐体に固定されている電池パック。 A battery pack that houses a battery module in a housing,
The battery module is configured by housing an array body in which a plurality of battery cells and an elastic body are arrayed in a housing,
The housing has an opening surface in a direction intersecting the array direction of the battery cells in the array body,
The battery pack in which the housing is fixed to the housing such that the opening surface faces the wall surface side of the housing, and the array is in contact with the wall surface of the housing on the opening surface. 前記配列体は、前記開口面側に弾性体を有し、当該弾性体を介して前記筐体の前記壁面に接している請求項１記載の電池パック。   The battery pack according to claim 1, wherein the array has an elastic body on the opening surface side, and is in contact with the wall surface of the housing via the elastic body. 前記ハウジングは、前記配列体を挟んで前記開口面の反対面側に壁面を有し、
前記配列体は、前記開口面の反対面側に弾性体を有し、当該弾性体を介して前記ハウジングの前記壁面に接している請求項１又は２記載の電池パック。 The housing has a wall surface on the opposite side of the opening surface across the array,
The battery pack according to claim 1, wherein the array has an elastic body on the opposite side of the opening surface and is in contact with the wall surface of the housing via the elastic body.
JP2015097130A 2015-05-12 2015-05-12 Battery pack Expired - Fee Related JP6728576B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2015097130A JP6728576B2 (en) 2015-05-12 2015-05-12 Battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2015097130A JP6728576B2 (en) 2015-05-12 2015-05-12 Battery pack

Publications (2)

Publication Number Publication Date
JP2016213104A true JP2016213104A (en) 2016-12-15
JP6728576B2 JP6728576B2 (en) 2020-07-22

Family

ID=57549759

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2015097130A Expired - Fee Related JP6728576B2 (en) 2015-05-12 2015-05-12 Battery pack

Country Status (1)

Country Link
JP (1) JP6728576B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019044581A1 (en) * 2017-08-29 2019-03-07 パナソニックＩｐマネジメント株式会社 Battery pack
JP2019106318A (en) * 2017-12-13 2019-06-27 パナソニックＩｐマネジメント株式会社 Battery pack
CN111357131A (en) * 2017-09-29 2020-06-30 罗伯特·博世有限公司 Battery pack including battery cell limiter
JP2020177935A (en) * 2020-08-06 2020-10-29 パナソニックＩｐマネジメント株式会社 Battery pack
WO2022119154A1 (en) * 2020-12-03 2022-06-09 주식회사 엘지에너지솔루션 Battery pack and device including same
FR3118678A1 (en) * 2021-01-04 2022-07-08 Faurecia Systemes D'echappement Electricity storage battery

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010010460A (en) * 2008-06-27 2010-01-14 Fdk Corp Electric storage device
WO2012073403A1 (en) * 2010-11-30 2012-06-07 パナソニック株式会社 Battery module and battery pack
WO2012081173A1 (en) * 2010-12-16 2012-06-21 パナソニック株式会社 Battery pack
JP2012160347A (en) * 2011-01-31 2012-08-23 Sanyo Electric Co Ltd Power supply and vehicle with power supply
JP2012248374A (en) * 2011-05-26 2012-12-13 Hitachi Ltd Battery module
JP2014107213A (en) * 2012-11-29 2014-06-09 Toyota Industries Corp Battery pack
WO2014125605A1 (en) * 2013-02-15 2014-08-21 日立オートモティブシステムズ株式会社 Secondary battery module
JP2014192120A (en) * 2013-03-28 2014-10-06 Toyota Industries Corp Battery pack
JP2015022830A (en) * 2013-07-17 2015-02-02 カルソニックカンセイ株式会社 Battery pack
JP2015082493A (en) * 2013-10-24 2015-04-27 株式会社豊田自動織機 Battery pack
WO2015151866A1 (en) * 2014-03-31 2015-10-08 日本電気株式会社 Rechargeable-battery device
US20160087319A1 (en) * 2013-06-07 2016-03-24 Lg Chem, Ltd. Battery pack having improved safety against leakage of liquid refrigerant

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010010460A (en) * 2008-06-27 2010-01-14 Fdk Corp Electric storage device
WO2012073403A1 (en) * 2010-11-30 2012-06-07 パナソニック株式会社 Battery module and battery pack
WO2012081173A1 (en) * 2010-12-16 2012-06-21 パナソニック株式会社 Battery pack
JP2012160347A (en) * 2011-01-31 2012-08-23 Sanyo Electric Co Ltd Power supply and vehicle with power supply
JP2012248374A (en) * 2011-05-26 2012-12-13 Hitachi Ltd Battery module
JP2014107213A (en) * 2012-11-29 2014-06-09 Toyota Industries Corp Battery pack
WO2014125605A1 (en) * 2013-02-15 2014-08-21 日立オートモティブシステムズ株式会社 Secondary battery module
JP2014192120A (en) * 2013-03-28 2014-10-06 Toyota Industries Corp Battery pack
US20160087319A1 (en) * 2013-06-07 2016-03-24 Lg Chem, Ltd. Battery pack having improved safety against leakage of liquid refrigerant
JP2016511509A (en) * 2013-06-07 2016-04-14 エルジー・ケム・リミテッド Battery pack with improved safety against outflow of liquid refrigerant
JP2015022830A (en) * 2013-07-17 2015-02-02 カルソニックカンセイ株式会社 Battery pack
JP2015082493A (en) * 2013-10-24 2015-04-27 株式会社豊田自動織機 Battery pack
WO2015151866A1 (en) * 2014-03-31 2015-10-08 日本電気株式会社 Rechargeable-battery device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019044581A1 (en) * 2017-08-29 2019-03-07 パナソニックＩｐマネジメント株式会社 Battery pack
CN111357131A (en) * 2017-09-29 2020-06-30 罗伯特·博世有限公司 Battery pack including battery cell limiter
US11837692B2 (en) 2017-09-29 2023-12-05 Robert Bosch Battery Systems GmbH Battery pack including cell restraint
JP2019106318A (en) * 2017-12-13 2019-06-27 パナソニックＩｐマネジメント株式会社 Battery pack
US11283099B2 (en) 2017-12-13 2022-03-22 Panasonic Intellectual Property Management Co., Ltd. Battery pack
JP2020177935A (en) * 2020-08-06 2020-10-29 パナソニックＩｐマネジメント株式会社 Battery pack
JP6994677B2 (en) 2020-08-06 2022-01-14 パナソニックＩｐマネジメント株式会社 Batteries assembled
WO2022119154A1 (en) * 2020-12-03 2022-06-09 주식회사 엘지에너지솔루션 Battery pack and device including same
FR3118678A1 (en) * 2021-01-04 2022-07-08 Faurecia Systemes D'echappement Electricity storage battery

Also Published As

Publication number Publication date
JP6728576B2 (en) 2020-07-22

Similar Documents

Publication Publication Date Title
JP6728576B2 (en) Battery pack
JP5067171B2 (en) Electrochemical storage element module
JP5028346B2 (en) Power storage device
JP6086315B2 (en) Power storage device
JP6753045B2 (en) Power storage device
JP2020520060A (en) Battery module having an initial pressing force strengthening structure for a cell assembly and method of manufacturing the same
JP2014203747A (en) Power storage element module
TW200933959A (en) Battery pack
JP6390721B2 (en) Battery pack
JP6086317B2 (en) Power storage device
JP6627265B2 (en) Battery pack
JP2017103158A (en) Battery pack
JP6627291B2 (en) Battery pack
JP6690452B2 (en) Battery module
JP2014203743A (en) Method for assembling battery pack and battery pack
JP6939631B2 (en) Fuel cell and vehicle equipped with it
JP6711234B2 (en) Battery unit
JP6759571B2 (en) Battery pack
JP6520156B2 (en) Power storage device and power storage device module
JP6107325B2 (en) Power storage device
JP6597301B2 (en) Battery module fixing structure
JP2017188375A (en) Battery pack
JP2021140866A (en) Battery module
JP6561756B2 (en) Battery pack
JP2017054693A (en) Battery pack

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20180206

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20190215

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20190226

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20190417

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20191001

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20191115

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: 20200602

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20200615

R151 Written notification of patent or utility model registration

Ref document number: 6728576

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

LAPS Cancellation because of no payment of annual fees