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JP2015026488A - Battery module-packaging structure - Google Patents

Battery module-packaging structure Download PDF

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Publication number
JP2015026488A
JP2015026488A JP2013154712A JP2013154712A JP2015026488A JP 2015026488 A JP2015026488 A JP 2015026488A JP 2013154712 A JP2013154712 A JP 2013154712A JP 2013154712 A JP2013154712 A JP 2013154712A JP 2015026488 A JP2015026488 A JP 2015026488A
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Japan
Prior art keywords
battery module
vehicle
hollow portion
hollow part
width direction
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JP6053629B2 (en
Inventor
稔 赤井
Minoru Akai
稔 赤井
川口　聡
Satoshi Kawaguchi
聡 川口
浩之 初見
Hiroyuki Hatsumi
浩之 初見
耕介 木戸
Kosuke Kido
耕介 木戸
秋弘 小崎
Akihiro Ozaki
秋弘 小崎
武徳 小林
Takenori Kobayashi
武徳 小林
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Aisin Keikinzoku Co Ltd
Toyota Motor Corp
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Aisin Keikinzoku Co Ltd
Toyota Motor Corp
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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

PROBLEM TO BE SOLVED: To provide a battery module-packaging structure which is lightweight and improves external input absorptivity.SOLUTION: A structure is configured to package a battery module in a vehicle. A battery module packaging space is internally formed by connecting both end portions of a lower member and an upper member disposed at the upper side of the lower member in a longitudinal direction of the vehicle via side face members, respectively. At least one side face member includes: an upper hollow part that a hollow part is formed in a width direction of the vehicle along an upper part of the side face member; and a side face hollow part which is connected with the upper hollow part and positioned at a lower side of the upper hollow part. The side face hollow part includes reinforcing portions in the vertical direction at a predetermined interval in the width direction of the vehicle.

Description

本発明は電池モジュールを車両に搭載するとともに、この電池モジュールを保護する構造体に関する。   The present invention relates to a structure for mounting a battery module on a vehicle and protecting the battery module.

電気自動車，ハイブリッド自動車，プラグインハイブリッド自動車等の分野においては、走行用の駆動源として、あるいは内燃機関と組み合せた駆動源として電池モジュールが搭載されている。
これらの電池モジュールとしては、ニッケル−カドミウム電池，ニッケル水素電池，リチウムイオン電池等の各種電池が採用されている。
また、これらの電池モジュールに加わる外部入力を吸収しつつ、電池モジュールを車両に搭載するためのフレーム構造体が、電池モジュールの周囲に設けられる。
特許文献１には電池モジュールのフレーム構造体が開示されており、同公報に開示されているフレーム構造体は、外部入力をフレーム構造体全体で受けつつ、その外部入力を車両側に伝達させんとしたものである。 In the fields of electric vehicles, hybrid vehicles, plug-in hybrid vehicles, etc., a battery module is mounted as a driving source for traveling or as a driving source combined with an internal combustion engine.
As these battery modules, various batteries such as a nickel-cadmium battery, a nickel hydrogen battery, and a lithium ion battery are employed.
In addition, a frame structure for mounting the battery module on the vehicle while absorbing external input applied to these battery modules is provided around the battery module.
Patent Document 1 discloses a frame structure of a battery module. The frame structure disclosed in the publication does not receive external input by the entire frame structure but transmits the external input to the vehicle side. It is what.

特開２０１１−９１７８号公報JP 2011-9178 A

車両の燃費向上の観点からは、フレーム構造体に対して軽量化が要求されている。
その一方で、電池モジュールを外部入力から保護する必要もある。
本発明は、軽量で外部入力の吸収性に優れた構造からなる電池モジュール搭載用構造体の提供を目的とする。 From the viewpoint of improving the fuel consumption of a vehicle, the frame structure is required to be lighter.
On the other hand, it is also necessary to protect the battery module from external input.
An object of this invention is to provide the structure for battery module mounting which consists of a light weight and the structure excellent in the absorbability of external input.

本発明に係る電池モジュール搭載用構造体は、車両に電池モジュールを搭載するための構造体であって、ロア部材と、当該ロア部材の上方に配置したアッパ部材との車両前後方向両端部を側面部材でそれぞれ連結することで内部に電池モジュールの搭載空間を形成してあり、少なくとも一方の側面部材は、当該側面部材の上部に沿って車両の幅方向に中空部を形成した上部中空部と、当該上部中空部と連結されその下側に位置する側面中空部とを有し、側面中空部は車両の幅方向に所定の間隔を隔てて上下方向の補強部を有することを特徴とする。
ここで電池モジュールとは、広義の二次電池の集合体をいい、構造や形状に制限がない。
現在、一般的な電池モジュールは、複数の単セルを積層したものが多い。
ロア部材は、電池モジュールを載置した構造体を車両側に取り付けるためのものであり、フレーム構造でもパネル構造でもよく、その構造に制限はない。
アッパ部材は、電池モジュールを上部から保護するためのものである。
本発明において側面部材とは、ロア部材とアッパ部材との間を連結し、電池モジュールを側面から保護するための部材をいう。 A structure for mounting a battery module according to the present invention is a structure for mounting a battery module on a vehicle, and side surfaces in the vehicle front-rear direction of a lower member and an upper member disposed above the lower member are side surfaces. A battery module mounting space is formed inside by connecting with each of the members, and at least one side member has an upper hollow portion formed with a hollow portion in the width direction of the vehicle along the upper portion of the side member, The side hollow part is connected to the upper hollow part and located below the upper hollow part, and the side hollow part has a vertical reinforcing part at a predetermined interval in the width direction of the vehicle.
Here, the battery module refers to an assembly of secondary batteries in a broad sense, and there are no restrictions on the structure and shape.
Currently, many common battery modules are obtained by stacking a plurality of single cells.
The lower member is for attaching the structure on which the battery module is mounted to the vehicle side, and may be a frame structure or a panel structure, and the structure is not limited.
The upper member is for protecting the battery module from above.
In the present invention, the side member refers to a member for connecting the lower member and the upper member to protect the battery module from the side.

本発明は、側面部材に外部から加わる外部入力をこの側面部材の変形によりエネルギーを吸収し、電池モジュールを保護するのが目的である。
本発明における側面部材の上部中空部は、アッパ部材の端部に沿って配置される車両の幅方向に延在する中空部をいい、側面中空部とはロア部材とアッパ部材との間であって、上部中空部の下側に配置された中空部をいう。
また、上下方向の補強部とは、側面中空部が撓み変形する際の剛性向上を目的としたものであって、上下方向のリブ，上下方向の突条部，上下方向の溝部を形成する等、その手段に制限はない。
例えば、補強部は、側面中空部を上下方向のビード状につぶし形成してもよい。 An object of the present invention is to protect the battery module by absorbing energy by external deformation applied to the side member from the outside by deformation of the side member.
The upper hollow portion of the side member in the present invention refers to a hollow portion that extends in the width direction of the vehicle disposed along the end of the upper member, and the side hollow portion is between the lower member and the upper member. The hollow portion disposed below the upper hollow portion.
The vertical reinforcing portion is intended to improve rigidity when the side hollow portion bends and deforms, and forms a vertical rib, a vertical protrusion, a vertical groove, etc. There are no restrictions on the means.
For example, the reinforcing portion may be formed by crushing the side hollow portion into a bead shape in the vertical direction.

本発明において、アッパ部材は車両前後方向に延在するパネル体であり、前記側面部材の上部中空部は上下に略平行で車両の幅方向に延在する一対のフランジ部を有し、当該一対のフランジ部の間に前記アッパ部材の端部を挿入及び連結してあってもよい。   In the present invention, the upper member is a panel body extending in the vehicle front-rear direction, and the upper hollow portion of the side member has a pair of flange portions extending substantially in the vertical direction and extending in the vehicle width direction. The end portion of the upper member may be inserted and connected between the flange portions.

車両に外部入力が加わると、電池モジュールを内側に収容した構造体にも外部入力が加わる。
本発明に係る構造体にあっては、側面部材が車両の幅方向に沿って中空部を形成した上部中空部と、この上部中空部の下側に連結された側面中空部を有しているとともに、側面中空部には車両の幅方向に所定の間隔を隔てて上下方向の補強部を有するので、外部入力に対して次のような作用効果を有する。
第１に局部的な入力モードに対しては、中空断面部が局部的に凹み変形することでエネルギーを吸収する。
第２に水平方向に撓み変形する入力モード（ｆ１）に対しては、例えば図４（ａ）に構造体を上から見た平面図に示すように、側面部材（フロント部材）が車両幅方向の中央部が後退するように撓み変形する。
このような入力モード（ｆ１）が側面部材に加わると、上部中空部が車両の幅方向に延在する中空断面になっているので、強い剛性を確保しながらその水平方向弓状の撓みによりエネルギーを吸収する。
第３に垂直方向（上下方向）に撓み変形する入力モード（ｆ２）に対しては、例えば図４（ｂ）に変形した側面部材の車両幅方向中央部の断面図で示すように、側面部材の側面中空部の上下方向中央部が後退するように撓み変形する。
この場合に側面中空部には、所定の間隔を隔てて上下方向の補強部を有しているので、強い剛性を確保しながら上下方向の中央部が後退する側面中空部の撓み変形により、エネルギーを吸収する。
このように本発明における構造体にあっては、側面部材が水平方向の撓み入力モードと垂直方向（上下方向）の撓み入力モードとを総合的にエネルギー吸収するので、側面部材の肉厚を薄くすることができ、全体として軽量化を図ることができる。 When an external input is applied to the vehicle, the external input is also applied to the structure housing the battery module inside.
In the structure according to the present invention, the side member has an upper hollow part in which a hollow part is formed along the width direction of the vehicle, and a side hollow part connected to the lower side of the upper hollow part. At the same time, since the side hollow portion has the vertical reinforcing portion with a predetermined interval in the width direction of the vehicle, it has the following effects on the external input.
First, for the local input mode, the hollow cross section is locally recessed and deformed to absorb energy.
Second, for the input mode (f 1 ) that bends and deforms in the horizontal direction, for example, as shown in the plan view of the structure in FIG. It bends and deforms so that the central part of the direction moves backward.
When such an input mode (f 1 ) is applied to the side member, the upper hollow portion has a hollow cross section extending in the width direction of the vehicle. Absorb energy.
Thirdly, for the input mode (f 2 ) that bends and deforms in the vertical direction (vertical direction), for example, as shown in the cross-sectional view of the center part in the vehicle width direction of the side member deformed in FIG. The member is bent and deformed so that the central portion in the vertical direction of the side hollow portion of the member is retracted.
In this case, since the side hollow portion has vertical reinforcing portions with a predetermined interval, energy is generated by bending deformation of the side hollow portion in which the vertical central portion retreats while ensuring strong rigidity. To absorb.
As described above, in the structure according to the present invention, the side member absorbs energy comprehensively in the horizontal deflection input mode and the vertical (vertical) deflection input mode, so the thickness of the side member is reduced. The weight can be reduced as a whole.

本発明に係る構造体の斜視図を示し、（ａ）は車両に取り付けた構造体の車両前後方向フロント側から見た状態、（ｂ）はリア側から見た状態を示す。The perspective view of the structure based on this invention is shown, (a) is the state seen from the vehicle front-back direction front side of the structure attached to the vehicle, (b) shows the state seen from the rear side. （ａ）は構造体の平面視とその正面視及び背面視を示し、（ｂ）は側面視を示す。(A) shows a plan view of the structure and its front view and back view, and (b) shows a side view. （ａ）はＡ−Ａ線断面図、（ｂ）はＢ−Ｂ線部分断面図を示す。(A) is AA sectional view, (b) shows a BB partial sectional view. 変形モードを模式的に示し、（ａ）は水平方向の撓み変形、（ｂ）は上下方向（垂直方向）の撓み変形を示す。The deformation modes are schematically shown, in which (a) shows horizontal deformation and (b) shows vertical deformation (vertical).

本発明に係る構造体の側面部材は、主に、この構造体を車両に取り付けた状態で車両の前後方向フロント側の側面、リア側の側面のいずれかあるいはその両方に設けることができるが、本実施例はフロント側に設けた例で説明する。   The side member of the structure according to the present invention can be provided mainly on either the front side or the rear side of the vehicle in the state in which the structure is attached to the vehicle, or both of them. This embodiment will be described with an example provided on the front side.

構造体１０は、図１〜３に示すようにロア部材とアッパ部材との前後の端部を第１側面部材１１と、第２側面部材１３を介して連結した箱形の構造体になっている。
本実施例は、第１側面部材としてのフロント部材１１に本発明に係る側面部材を適用した例を示す。 The structure 10 is a box-shaped structure in which the front and rear end portions of the lower member and the upper member are connected via the first side member 11 and the second side member 13 as shown in FIGS. Yes.
This embodiment shows an example in which the side member according to the present invention is applied to the front member 11 as the first side member.

図２（ｂ）及び図３に示すように、フロント部材１１はアッパパネル体（アッパ部材）１６のフロント側の端部に沿って水平車両幅方向に形成した上部中空部１１ａと、この下側にやや斜めに形成した連結部１１ｃを介して側面中空部１１ｂを有する。
側面中空部１１ｂは、図１（ａ），図３（ｂ）に示すように車両の幅方向に所定の間隔を隔てて上下方向につぶし加工した補強部１１ｅを有する。
本実施例では、側面中空部１１ｂの表側の側壁と裏側の側壁とが相互に重なり、かつ、内側に凹んだ溝部が形成されるようにビード状につぶし加工した例になっている。
側面中空部１１ｂの下側はフランジ部１１ｄを形成し、ロア部材を構成するロアフレーム１２とリベット、ビス等の締結部材１１ｆで締結してある。
パネル状のロアパネル体１５のフロント側の端部は、ロアフレーム１２に設けた上下に平行で車両幅方向に延在するフランジ部１１２ａ，１１２ａで挟み込むように連結してあり、ロアパネル体１５のリア側の端部はリア部材１３の下部側に形成したロア中空部１３ｂとそのフロント側に形成した一対のとフランジ部１１３ｂ，１１３ｂで連結してある。
リア部材１３は、下部のロア中空部１３ｂと上部のアッパ中空部１３ａとを板状の連結部１３ｃにて連結した例になっているが、この構造に限定されない。
ロアフレーム１２は、ロアパネル体１５のフロント側の端部に沿って配置した中空部１２ａと車両側に固定するためのフランジ部１２ｂを有し、中空部１２ａとフロント部材１１のフランジ部１１ｄと締結し、フランジ部１２ｂには車両との取付孔１２ｃを有する。
また、ロアパネル体１５の車両幅方向両側の側部に車両との連結フランジ部１５ａを有し、この連結フランジ部１５ａに連結孔１５ｂを有する。 As shown in FIGS. 2B and 3, the front member 11 includes an upper hollow portion 11 a formed in the horizontal vehicle width direction along the front side end portion of the upper panel body (upper member) 16, and a lower side thereof. It has the side hollow part 11b through the connection part 11c formed slightly diagonally.
As shown in FIGS. 1A and 3B, the side hollow portion 11b has a reinforcing portion 11e that is crushed in the vertical direction at a predetermined interval in the width direction of the vehicle.
In this embodiment, the front side wall and the back side wall of the side hollow portion 11b overlap each other and are crushed into a bead shape so as to form a recessed groove portion on the inside.
A lower portion of the side hollow portion 11b forms a flange portion 11d and is fastened by a lower frame 12 constituting a lower member and a fastening member 11f such as a rivet or a screw.
The front-side end of the panel-like lower panel body 15 is connected so as to be sandwiched between flange portions 112 a and 112 a that are parallel to the upper and lower sides of the lower frame 12 and extend in the vehicle width direction. The end on the side is connected by a lower hollow portion 13b formed on the lower side of the rear member 13 and a pair of flange portions 113b and 113b formed on the front side thereof.
The rear member 13 is an example in which the lower lower hollow portion 13b and the upper upper hollow portion 13a are connected by a plate-like connecting portion 13c, but the present invention is not limited to this structure.
The lower frame 12 has a hollow portion 12a arranged along the front side end of the lower panel body 15 and a flange portion 12b for fixing to the vehicle side, and is fastened to the hollow portion 12a and the flange portion 11d of the front member 11. The flange portion 12b has a mounting hole 12c with the vehicle.
Further, the lower panel body 15 has side flanges 15a on both sides of the vehicle in the vehicle width direction, and has a connection hole 15b in the connection flange portion 15a.

アッパ部材は、パネル状のアッパパネル体１６とそのリア側の端部に沿ってフランジ部１１４ａ，１１４ａで溶接連結したアッパフレーム１４を有する。
アッパフレーム１４は、車両幅方向に延在する中空部１４ａとその後側に連結フランジ部１４ｂを有し、この連結フランジ部１４ｂとリア部材１３のアッパ中空部１３ａとをボルト１４ｃにて連結してある。
アッパパネル体１６のフロント側の端部は、図３（ａ）に示すように上部中空部１１ａの後方に形成した上下に略平行で車両方向に延在配置された一対のフランジ部１１１ａ，１１１ａの間に挿入及び連結されている。
このような箱形の構造体１０の内部に電池モジュール１が取り付けられている。 The upper member has a panel-like upper panel body 16 and an upper frame 14 welded and connected along flanges 114a and 114a along the rear end thereof.
The upper frame 14 has a hollow portion 14a extending in the vehicle width direction and a connecting flange portion 14b on the rear side thereof. The connecting flange portion 14b and the upper hollow portion 13a of the rear member 13 are connected by a bolt 14c. is there.
As shown in FIG. 3 (a), the front side end of the upper panel body 16 is formed of a pair of flange portions 111a and 111a that are formed on the rear side of the upper hollow portion 11a and are substantially parallel to each other and extend in the vehicle direction. Inserted and connected between.
The battery module 1 is attached inside such a box-shaped structure 10.

これにより、例えば図４（ａ）に示す水平方向に撓み変形する入力ｆ１，図４（ｂ）に示す上下方向に撓み変形する入力ｆ２及びこれらが複合的に入力される変形モードを効果的に吸収する。 Accordingly, for example, the input f 1 that is bent and deformed in the horizontal direction shown in FIG. 4A, the input f 2 that is bent and deformed in the vertical direction shown in FIG. 4B, and a deformation mode in which these are input in combination are effective. Absorb.

１ 電池モジュール
１０ 構造体
１１ フロント部材（第１側面部材）
１１ａ 上部中空部
１１ｂ 側面中空部
１１ｃ 連結部
１１ｅ 補強部
１２ ロアフレーム
１３ リア部材（第２側面部材）
１４ アッパフレーム
１５ ロアパネル体
１６ アッパパネル体 DESCRIPTION OF SYMBOLS 1 Battery module 10 Structure 11 Front member (1st side member)
11a Upper hollow part 11b Side hollow part 11c Connection part 11e Reinforcement part 12 Lower frame 13 Rear member (2nd side member)
14 Upper frame 15 Lower panel body 16 Upper panel body

Claims (3)

車両に電池モジュールを搭載するための構造体であって、
ロア部材と、当該ロア部材の上方に配置したアッパ部材との車両前後方向両端部を側面部材でそれぞれ連結することで内部に電池モジュールの搭載空間を形成してあり、
少なくとも一方の側面部材は、当該側面部材の上部に沿って車両の幅方向に中空部を形成した上部中空部と、当該上部中空部と連結されその下側に位置する側面中空部とを有し、
側面中空部は車両の幅方向に所定の間隔を隔てて上下方向の補強部を有することを特徴とする電池モジュール搭載用構造体。 A structure for mounting a battery module on a vehicle,
A mounting space for the battery module is formed inside by connecting the vehicle front-rear direction both ends of the lower member and the upper member disposed above the lower member with side members,
At least one of the side members has an upper hollow portion that forms a hollow portion in the width direction of the vehicle along the upper portion of the side member, and a side hollow portion that is connected to the upper hollow portion and located below the upper hollow portion. ,
The structure for mounting a battery module, wherein the side hollow portion has a vertical reinforcing portion with a predetermined interval in the width direction of the vehicle. 前記アッパ部材は車両前後方向に延在するパネル体であり、前記側面部材の上部中空部は上下に略平行な一対のフランジ部を有し、当該一対のフランジ部の間に前記アッパ部材の端部を挿入及び連結してあることを特徴とする請求項１記載の電池モジュール搭載用構造体。   The upper member is a panel body extending in the vehicle front-rear direction, and the upper hollow portion of the side member has a pair of flange portions that are substantially parallel in the vertical direction, and the end of the upper member is between the pair of flange portions. The battery module mounting structure according to claim 1, wherein the parts are inserted and connected. 前記補強部は、側面中空部を上下方向のビード状につぶし形成したことを特徴とする請求項１又は２記載の電池モジュール搭載用構造体。   The battery module mounting structure according to claim 1, wherein the reinforcing portion is formed by crushing a hollow side surface into a bead shape in the vertical direction.
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JP2016219271A (en) * 2015-05-21 2016-12-22 アイシン軽金属株式会社 Frame structure for mounting battery module
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Publication number Priority date Publication date Assignee Title
WO2016063967A1 (en) * 2014-10-24 2016-04-28 アイシン軽金属株式会社 Protective frame structure
JPWO2016063967A1 (en) * 2014-10-24 2017-11-16 アイシン軽金属株式会社 Protective frame structure
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JP2016219271A (en) * 2015-05-21 2016-12-22 アイシン軽金属株式会社 Frame structure for mounting battery module
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CN116759737A (en) * 2023-08-16 2023-09-15 中宏科创新能源科技(浙江)有限公司 Battery module bundling assembly and battery module
CN116759737B (en) * 2023-08-16 2023-11-14 中宏科创新能源科技(浙江)有限公司 Battery module bundling assembly and battery module
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CN117239322B (en) * 2023-11-14 2024-01-16 深圳市赋勤创新科技有限公司 Shell and active heat dissipation energy storage lithium battery

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