WO2022230345A1 - 車載電池ケース用強度部材 - Google Patents
車載電池ケース用強度部材 Download PDFInfo
- Publication number
- WO2022230345A1 WO2022230345A1 PCT/JP2022/008199 JP2022008199W WO2022230345A1 WO 2022230345 A1 WO2022230345 A1 WO 2022230345A1 JP 2022008199 W JP2022008199 W JP 2022008199W WO 2022230345 A1 WO2022230345 A1 WO 2022230345A1
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- WIPO (PCT)
- Prior art keywords
- battery case
- strength member
- vehicle
- terminal
- battery
- Prior art date
Links
- 230000001681 protective effect Effects 0.000 claims description 21
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
-
- 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
Definitions
- the present invention relates to a strength member used to mount a battery module on a vehicle, and particularly when the battery module is housed in a battery case and mounted on the vehicle, it is excellent in protecting the battery module and effective in making the battery case compact. is.
- Electric vehicles, hybrid vehicles, and the like are equipped with a battery module (also referred to as a battery pack or battery module) made up of a secondary battery as a drive source. In that case, it is necessary to protect the battery module against the input load from the outside.
- a battery module also referred to as a battery pack or battery module
- Patent Literature 1 discloses a bracket for fixing battery modules so as to form a space between battery modules adjacent to each other in the longitudinal direction of the vehicle.
- the bracket is attached to the bottom of the lower case so that there is a gap between the end of the bracket and the side wall of the battery case to allow the battery module to move forward and backward.
- the load from the side wall is not directly transmitted to the bracket, but is transmitted through the attachment member to the lower case, so the strength of this attachment member and the space for attachment are required.
- An object of the present invention is to provide a strength member for an in-vehicle battery case that has a high effect of protecting the battery module against an input load from the outside and that allows the battery case to be downsized.
- a strength member according to the present invention is a strength member for holding a battery module in a battery case used for housing the battery module and mounted on a vehicle, the strength member comprising a protective part and a a pair of terminal parts respectively connected to both ends of the battery case, the protective part having a fixing part for fixing and holding the battery module, and the pair of terminal parts respectively being inside the side wall of the battery case. It is characterized by having a fastening portion for fastening to the battery case so as to be located at the position of the battery case.
- the battery case is for housing a so-called secondary battery that can be repeatedly charged and used, a control device for the same, and the like, and is mounted, for example, under the floor of the vehicle.
- the battery case can be manufactured, for example, by closing at least one opening of a frame body formed by a front wall, a rear wall and side walls (left wall and right wall) with a panel body, but the present invention is not limited to this. .
- the strength member in the present invention consists of a protection part for fixing and holding the battery module, and a pair of terminal parts connected to the ends on both sides of the protection part. An input load applied to the sidewall from the outside is transmitted to the protection component via the transmission component. In this way, while the input load is distributed by the terminal parts, the battery module is held by the protective parts, which is compact.
- the terminal component may have an insertion portion with an inner opening, and the end portion of the protection component may be fitted and connected to the insertion portion.
- connection methods include friction stir welding and welding, but are not limited to these.
- the inner and outer sides are based on the battery case, and the inner side means the inner direction of the battery case, for example.
- an input load applied to the battery case from the outside is transmitted to the end surface of the protective component via the side wall of the battery case and the terminal component, and the position of the end surface of the protective component is , the terminal component may be positioned outside a fastening portion to be fastened to the battery case.
- the end face of the protective component serves as a transmission surface through which the load is transmitted from the terminal component.
- the protection part and the terminal part are made of an extruded material having a hollow cross-sectional shape, the deformation of the hollow part can absorb the input load from the outside.
- a hollow cross-sectional shape can be easily manufactured, for example, from an aluminum extrusion.
- the strength member for a vehicle battery case according to the present invention, an input load from the outside is directly transmitted to the strength member. It is compact because it does not require parts, does not require space for it, and does not require mounting strength. In addition, the effect of directly protecting the battery module with the protective component is also excellent.
- Example 1 shows a structural example of a strength member according to the present invention
- An example of the state before connecting the components is shown.
- An example of a state in which components are connected is shown.
- Example 2 is shown.
- Example 3 is shown.
- An example of fastening to a battery case is shown.
- An example of fixing a battery module is shown.
- FIG. 1 to 3 show the strength member 20 of Example 1.
- FIG. The strength member 20 has a protection component 24 extending in the left-right direction and a pair of terminal components 21, 21 connected to both left and right ends of the protection component 24, respectively.
- the protective component 24 is made of an aluminum extrusion material having a plurality of hollow portions 24a, and is positioned inside the end portion 24b that fits with the terminal component 21 for fixing and holding the battery module 100. It has a fixing part 25 .
- the terminal part 21 is an extruded aluminum material having a hollow portion 21a, and has a fastening portion 22 fastened to the side wall of the battery case 10 described later, and a substantially U-shaped insertion portion 23 opening inward.
- the insertion portion 23 is composed of a front surface 23a, a rear surface 23b, and side surfaces 23c, and the fastening portions 22 are provided inside the hollow portions 21a located near the front and rear sides of the side surface 23c.
- the terminal part 21 is connected as shown in FIG. At this time, the front and rear surfaces 23a and 23b constituting the insertion portion 23 sandwich the end portion 24b, and the side surface 23c and the end surface 24c of the protective component 24 face each other, but the end surface 24c is disposed outside the fastening portion 22. . With this configuration, an input load from the side wall of the battery case that receives an external impact is transmitted to the end surface 24c of the protective component 24 via the side surface 23c of the terminal component 21. As shown in FIG.
- the terminal part and the protection part of the present embodiment are examples of being made of an extruded aluminum material, they are not limited to this.
- the strength member 20 of the present embodiment has a symmetrical shape of the terminal part 21 in the front-rear direction, the terminal part 21 may have an asymmetrical shape as in the second embodiment shown in FIG. . Further, like the strength member 20 of Example 3 shown in FIG. The position and the number of fixing parts and fastening parts may be selected as appropriate.
- the material and structure of the battery case are not limited.
- the frame body that constitutes the battery case 10 is formed using a left wall 11, a right wall 12, a front wall 13 and a rear wall 14, which are aluminum frames, and a panel body 15 is attached so as to close the opening. installed.
- the structure of the left and right walls 11 and 12 is not limited as long as it can be fastened to the fastening portion 22 of the terminal component 21 .
- fastened portions 11c may be provided at predetermined intervals on ribs 11b extending inward from the lower side of the inner wall 11a of the left wall 11 .
- the fastening portion 22 penetrating through the terminal component 21 in the vertical direction and the fastening portion 11c of the left wall 11 can be fastened using bolts and nuts.
- a bracket 17 may be provided on the panel body 15, and the fastening portion 27 between the bracket 17 and the strength member 20 may be bolted.
- the battery module 100 may have guard members 101 provided at the ends of a plurality of battery cells and an intermediate guard member 102 provided in the middle.
- the fixing portions 25 and 26 of the protective component 24 of the strength member 20 can be fixed with bolts.
- the guard members 101, 101 of the two battery modules 100, 100 can be alternately fixed to the two fixing portions 25, 25 provided on the left side of one protective component 24 from the front-rear direction.
- the strength member for an in-vehicle battery case according to the present invention is useful for enhancing the protection of the battery when the battery is mounted on the vehicle.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Body Structure For Vehicles (AREA)
Abstract
Description
その場合に電池モジュールを外部からの入力荷重に対して保護する必要がある。
この場合、電池モジュールが前後方向に移動するのを許容するために、ブラケットの端部と電池ケースの側壁との間に隙間を有するように、このブラケットがロアケースの底部に取り付けられている。
これでは側壁からの荷重がブラケットには直接伝達されず、ロアケースとの取付部材を介して伝達されるため、この取付部材の強度や取付けのためのスペースが必要となる。
電池ケースは、例えば前壁、後壁及び側壁(左壁、右壁)で形成される枠体の少なくとも一方の開口部をパネル体で塞ぐことで製作できるが、これに限定されるわけではない。
このように入力荷重を端末部品にて分散させつつ、保護部品にて電池モジュールを保持することになり、コンパクトである。
このように端末部品が保護部品の端部を加え込むと、両者を連結しやすく、また入力荷重の伝達も安定する。
連結方法としては、例えば摩擦攪拌接合や溶接等が挙げられるが、これに限定されるわけではない。
なお、内外側は電池ケースを基準とし、例えば内側とは電池ケースの内側方向をいう。
保護部品の端面は、端末部品から荷重が伝達される伝達面となる。
このように伝達面が位置することで、電池ケースの側壁からの入力荷重が端末部品に伝達され、この端末部品と電池ケースとの締結部やこの端末部品と保護部品との連結部に分散入力されることで、これらの締結部や連結部に仮にずれが生じたとしても、入力荷重は保護部品にも確実に伝達される。
このような中空断面形状は、例えばアルミニウム押出材により容易に製作することができる。
また、保護部品にて電池モジュールを直接保護する効果にも優れる。
説明の便宜上、左右方向を外部からの衝撃を受けやすい方向とする。
強度部材20は左右方向に延在する保護部品24と、保護部品24の左右両側の端部にそれぞれ連結された一対の端末部品21,21を有する。
図2に示すように、保護部品24は複数の中空部24aを有するアルミニウム押出材で製作してあり、端末部品21と嵌合する端部24bよりも内側に電池モジュール100を固定保持するための固定部25を有する。
端末部品21は、中空部21aを有するアルミニウム押出材であり、後述する電池ケース10の側壁に締結される締結部22と、内側に開口した略コ字状の挿入部23を有する。
挿入部23は前面23a、後面23b及び側面23cで構成され、側面23cの前後近傍に位置する中空部21aよりも内側に締結部22が設けてある。
端末部品21は、その挿入部23に保護部品24の端部24bを加え込んだ状態で、図3に示すように連結する。
この際、挿入部23を構成する前後面23a、23bが端部24bを狭持し、側面23cと保護部品24の端面24cが対向するが、締結部22よりも外側に端面24cを配設する。
このようにすると、外部衝撃を受ける電池ケースの側壁からの入力荷重が端末部品21の側面23cを介して、保護部品24の端面24cに伝達される。
なお、本実施例の端末部品や保護部品は、アルミニウム押出材で製作された例であるが、これに限定するわけではない。
また、本実施例の強度部材20は、その端末部品21が前後方向に対称的な形状であるが、図4に示す実施例2のように、端末部品21が非対称な形状であってもよい。
さらに、図5に示す実施例3の強度部材20のように、保護部品24の中間等に別途電池モジュール100を固定保持する固定部26や、電池ケース(パネル体)と締結する締結部27を有してもよく、固定部や締結部の位置や数は適宜選択してもよい。
本発明において、電池ケースの材質や構造に制限はない。
例えば、電池ケース10を構成する枠体は、アルミ製のフレームである左壁11、右壁12、前壁13及び後壁14を用いて形成され、その開口部を塞ぐようにパネル体15を取り付けてある。
左右壁11,12は、端末部品21の締結部22と締結できれば、その構造に限定はない。
例えば図6に示すように、左壁11の内壁11a下側から内側に向かうリブ11bに、所定の間隔で被締結部11cを設けてあってもよい。
これにより、端末部品21を上下方向に貫通する締結部22と左壁11の被締結部11cとを、ボルトやナットを用いて締結できる。
また、パネル体15にブラケット17を設け、ブラケット17と強度部材20の締結部27をボルト締結してもよい。
例えば図7に示すように、電池モジュール100は複数の電池セルの端部に設けたガード部材101、101や、中間に設けた中間ガード部材102を有してもよい。
ガード部材101、102に被固定部を設けることで、強度部材20の保護部品24が有する固定部25,26とボルト固定できる。
例えば、1つの保護部品24の左側に有する2つ固定部25,25には、それぞれ前後方向から2つの電池モジュール100、100のガード部材101、101を左右互い違えに固定可能である。
21 端末部品
22 締結部
24 保護部品
24b 端部
25 固定部
Claims (4)
- 電池モジュールを収容し車両に搭載するために用いられる電池ケースにおいて前記電池モジュールを保持するための強度部材であって、
前記強度部材は保護部品と、前記保護部品の両側の端部にそれぞれ連結された一対の端末部品とを備え、
前記保護部品は前記電池モジュールを固定保持するための固定部を有し、
前記一対の端末部品はそれぞれ、前記電池ケースの側壁内側に位置するように該電池ケースに締結されるための締結部を有していることを特徴とする車載電池ケース用強度部材。 - 前記端末部品は内側が開口した挿入部を有し、
前記保護部品の端部は前記挿入部に嵌合連結してあることを特徴とする請求項1に記載の車載電池ケース用強度部材。 - 前記電池ケースに外部から入力された入力荷重は該電池ケースの側壁及び前記端末部品を介して保護部品の端面に伝達されるものであり、
前記保護部品の端面の位置が、前記端末部品が電池ケースに締結される締結部よりも外側に位置していることを特徴とする請求項1又は2に記載の車載電池ケース用強度部材。 - 前記保護部品と端末部品とは中空断面形状からなる押出材で製作してあることを特徴とする請求項1~3のいずれかに記載の車載電池ケース用強度部材。
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JP2023517098A JPWO2022230345A1 (ja) | 2021-04-29 | 2022-02-28 | |
CN202280014495.6A CN116830369A (zh) | 2021-04-29 | 2022-02-28 | 车载电池壳用强度部件 |
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Citations (5)
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CN210110876U (zh) * | 2019-07-15 | 2020-02-21 | 江苏时代新能源科技有限公司 | 电池下箱体及电池系统 |
JP2020083297A (ja) * | 2018-11-19 | 2020-06-04 | アイシン軽金属株式会社 | 電池の車両搭載構造 |
CN210723281U (zh) * | 2019-08-29 | 2020-06-09 | 广汽新能源汽车有限公司 | 电池包冷却结构、电池壳及电池系统 |
US20200207221A1 (en) * | 2016-08-17 | 2020-07-02 | Shape Corp. | Battery support and protection structure for a vehicle |
CN211828886U (zh) * | 2020-03-11 | 2020-10-30 | 纽维科精密制造江苏有限公司 | 无焊缝轻量化电池箱体 |
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- 2022-02-28 WO PCT/JP2022/008199 patent/WO2022230345A1/ja active Application Filing
- 2022-02-28 JP JP2023517098A patent/JPWO2022230345A1/ja active Pending
- 2022-02-28 CN CN202280014495.6A patent/CN116830369A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US20200207221A1 (en) * | 2016-08-17 | 2020-07-02 | Shape Corp. | Battery support and protection structure for a vehicle |
JP2020083297A (ja) * | 2018-11-19 | 2020-06-04 | アイシン軽金属株式会社 | 電池の車両搭載構造 |
CN210110876U (zh) * | 2019-07-15 | 2020-02-21 | 江苏时代新能源科技有限公司 | 电池下箱体及电池系统 |
CN210723281U (zh) * | 2019-08-29 | 2020-06-09 | 广汽新能源汽车有限公司 | 电池包冷却结构、电池壳及电池系统 |
CN211828886U (zh) * | 2020-03-11 | 2020-10-30 | 纽维科精密制造江苏有限公司 | 无焊缝轻量化电池箱体 |
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JPWO2022230345A1 (ja) | 2022-11-03 |
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