CN111081918B - A new energy vehicle battery pack bracket - Google Patents
A new energy vehicle battery pack bracket Download PDFInfo
- Publication number
- CN111081918B CN111081918B CN201811217140.9A CN201811217140A CN111081918B CN 111081918 B CN111081918 B CN 111081918B CN 201811217140 A CN201811217140 A CN 201811217140A CN 111081918 B CN111081918 B CN 111081918B
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- Prior art keywords
- battery pack
- horizontal plane
- plane
- protruding part
- new energy
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- 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
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
本发明公开一种新能源汽车电池包支架。所述支架包括依次邻接的第一水平面、竖直面、第二水平面、倾斜面以及对称的第一侧面和第二侧面，第一水平面与电池包突出部分的上表面贴合并固定在一起，竖直面与电池包突出部分的一个竖直侧面贴合并固定在一起；第二水平面位于电池包突出部分与地板横梁的过渡区域，一部分与电池包突出部分的底部翻边贴合并固定在一起，另一部分悬空，倾斜面与地板横梁贴合并固定在一起。本发明通过将两个所述支架分别安装在电池包突出部分与断开的地板横梁之间，使地板横梁与电池包突出部分连接成一个从左至右的整体横梁，提高了横梁刚度的连续性，并强化地板和电池包的固有模态，降低由模态引起的结构噪声。
The present invention discloses a new energy vehicle battery pack bracket. The bracket includes a first horizontal plane, a vertical plane, a second horizontal plane, an inclined plane, and a symmetrical first side surface and a second side surface that are adjacent to each other in sequence. The first horizontal plane is attached to and fixed to the upper surface of the protruding part of the battery pack, and the vertical plane is attached to and fixed to a vertical side surface of the protruding part of the battery pack; the second horizontal plane is located in the transition area between the protruding part of the battery pack and the floor beam, a part of it is attached to and fixed to the bottom flange of the protruding part of the battery pack, and the other part is suspended, and the inclined plane is attached to and fixed to the floor beam. The present invention connects the floor beam and the protruding part of the battery pack into an integral beam from left to right by installing two of the brackets respectively between the protruding part of the battery pack and the disconnected floor beam, thereby improving the continuity of the beam stiffness, strengthening the natural modes of the floor and the battery pack, and reducing the structural noise caused by the mode.
Description
Technical Field
The invention belongs to the technical field of automobile manufacturing, and particularly relates to a battery pack bracket of a new energy automobile.
Background
At present, the NVH (Noise, vibration, harshness, noise, vibration and harshness) performance research of domestic automobiles mainly aims at traditional automobiles, and the NVH performance research of new energy automobiles is still in a starting stage. With the rapid increase of the keeping amount of new energy automobiles in China, the NVH performance requirements of customer groups on the new energy automobiles are also higher and higher. Most new energy vehicle types in the market generally meet the requirements of customers on endurance mileage by increasing the number of battery packs. The increase of the number of the battery packs leads to the increase of the battery pack volume, thereby causing the reduction of NVH optimization space of the automobile, causing unreasonable structure thereof and particularly showing:
(1) The protruding portion in the middle of the battery pack lacks support;
(2) At the protruding portion of the battery pack, the middle of the lower cross beam of the automobile floor breaks, resulting in discontinuous rigidity;
(3) The existing battery pack support structure is biased to be flat and lacks of cavity support.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a new energy automobile battery pack bracket which can connect a floor beam and a battery pack protruding part into a whole beam from left to right, so that the continuity of the rigidity of the beam is improved.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a new energy automobile battery package support installs between one side and the floor crossbeam of battery package protruding portion, and the support is whole to be the dustpan form, including the first horizontal plane, vertical face, second horizontal plane, inclined plane and the relative support central line symmetry that adjoin in proper order and with first horizontal plane, vertical face, second horizontal plane and inclined plane all perpendicular and the first side and the second side that adjoin. The first horizontal plane is attached to and fixed to the upper surface of the protruding portion of the battery pack, the vertical plane is attached to and fixed to one vertical side face of the protruding portion of the battery pack, the second horizontal plane is located in a transition area between the protruding portion of the battery pack and the floor beam, one part of the second horizontal plane is attached to and fixed to the bottom flange of the protruding portion of the battery pack, the other part of the second horizontal plane is suspended, and the inclined plane is attached to and fixed to the floor beam.
Further, the connection modes of the first horizontal plane, the vertical plane and the second horizontal plane and the protruding part of the battery pack, and the connection mode of the inclined plane and the floor beam are carbon dioxide protection welding modes.
Further, ribs are arranged at the transition part of the vertical surface and the second horizontal surface.
Further, the height of the ribs is 5 mm.
Further, a first bolt mounting hole is formed in the second horizontal plane, and a second bolt mounting hole is formed in the inclined plane.
Further, the first side surface and the second side surface are provided with flanging.
Compared with the prior art, the invention has the following beneficial effects:
The invention provides a battery pack bracket of a new energy automobile, which comprises a first horizontal plane, a vertical plane, a second horizontal plane, an inclined plane, a first side surface and a second side surface which are sequentially adjacent, wherein the first horizontal plane is adhered to and fixed with the upper surface of a protruding part of the battery pack, the vertical plane is adhered to and fixed with one vertical side surface of the protruding part of the battery pack, the second horizontal plane is positioned in a transition area between the protruding part of the battery pack and a floor beam, one part of the second horizontal plane is adhered to and fixed with a bottom flanging of the protruding part of the battery pack, the other part of the second horizontal plane is suspended, and the inclined plane is adhered to and fixed with the floor beam. According to the invention, the two brackets are respectively arranged between the left side and the right side of the protruding part of the battery pack and the disconnected floor cross beam, so that the disconnected floor cross beam and the protruding part of the battery pack are connected into a left-to-right integral cross beam, the continuity of the rigidity of the cross beam is improved, the inherent modes of the floor and the battery pack are strengthened, and the structural noise caused by the modes is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a battery pack bracket of a new energy automobile according to an embodiment of the invention;
fig. 2 is a schematic diagram of the bracket assembly.
In the figure, 1-first horizontal plane, 2-vertical plane, 3-second horizontal plane, 4-inclined plane, 5-first side, 6-second side, 7-rib, 8-first bolt mounting hole, 9-second bolt mounting hole, 10-battery pack protruding part, 11-bottom flanging and 12-floor beam.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
The schematic structural diagrams of a battery pack bracket of a new energy automobile are shown in fig. 1 and 2, wherein the bracket is arranged between one side of a protruding part 10 of the battery pack and a floor beam 12, and the bracket is in a dustpan shape as a whole and comprises a first horizontal plane 1, a vertical plane 2, a second horizontal plane 3, an inclined plane 4 which are sequentially adjacent, and a first side surface 5 and a second side surface 6 which are symmetrical relative to the center line of the bracket and are perpendicular to the first horizontal plane 1, the vertical plane 2, the second horizontal plane 3 and the inclined plane 4. The first horizontal plane 1 is attached and fixed to the upper surface of the battery pack protruding portion 10, the vertical plane 2 is attached and fixed to one vertical side surface of the battery pack protruding portion 10, the second horizontal plane 3 is located in the transition area of the battery pack protruding portion 10 and the floor beam 12, one part of the second horizontal plane is attached and fixed to the bottom flange 11 of the battery pack protruding portion 10, the other part of the second horizontal plane is suspended, and the inclined plane 4 is attached and fixed to the floor beam 12.
In this embodiment, the bracket is used to connect the floor cross member 12, which has to be disconnected because the battery pack protruding portion 10 occupies a space, with the battery pack protruding portion 10 as an integral cross member. The battery pack protrusion 10 has a shape of approximately a rectangular parallelepiped having three vertical sides and an upper surface exposed to the outside, and a bottom flange 11 is provided at the bottom thereof. Therefore, it is necessary to install two of the brackets between the opposite sides of the battery pack protrusion 10 and the broken floor cross member 12, respectively, in practical use.
In this embodiment, the overall shape of the bracket approximates a dustpan, and is mainly composed of a first horizontal plane 1, a vertical plane 2, a second horizontal plane 3, an inclined plane 4, and opposite first and second sides 5 and 6. The first horizontal plane 1 is positioned at the tail part of the dustpan and is attached and fixed with the upper surface of the battery pack protruding part 10 when being installed, and the vertical plane 2 is adjacent to the first horizontal plane 1 and is attached and fixed with one vertical side surface of the battery pack protruding part 10 when being installed. The horizontal and vertical directions in this embodiment are similar to the precise horizontal direction and vertical direction, and the inclination angle should be designed on the principle that the battery pack protruding part 10 can be maximally attached, the second horizontal plane 3 is adjacent to the vertical plane 2, a part of the second horizontal plane 3 is attached and fixed to the bottom flanging 11 of the battery pack protruding part 10, and the part close to the floor beam 12 is suspended, because the second horizontal plane 3 is just positioned in the transition area between the battery pack protruding part 10 and the floor beam 12, the floor beam 12 in the area is an inclined plane, the inclined plane 4 is adjacent to the second horizontal plane 3 and positioned at the front end of the dustpan, and the inclined plane 4 is attached and fixed with the inclined plane of the floor beam 12 during installation. The degree of inclination of the inclined surface 4 corresponds to the inclined surface of the floor cross member 12.
In the embodiment, the two brackets are respectively arranged between the left side and the right side of the battery pack protruding part 10 and the broken floor cross beam 12, so that the broken floor cross beam 12 and the battery pack protruding part 10 are connected into a whole cross beam from left to right, the continuity of the rigidity of the cross beam is improved, the inherent modes of the floor and the battery pack are strengthened, and the structural noise caused by the modes is reduced. Experiments show that the mode of the battery pack protruding structure is improved from 71Hz to 80Hz, the road noise response of the whole vehicle is reduced by 3.1dB at the 71Hz, and other frequency points are also obviously reduced.
As an alternative embodiment, the connection mode of the first horizontal plane 1, the vertical plane 2 and the second horizontal plane 3 and the battery pack protruding portion 10, and the connection mode of the inclined plane 4 and the floor beam 12 are all carbon dioxide protection welding modes.
The present embodiment shows a fixed connection of the bracket to the battery pack protrusion 10 and the floor cross member 12, that is, carbon dioxide welding is adopted. Carbon dioxide arc welding is a method of welding with carbon dioxide as a shielding gas. Is suitable for automatic welding and omnibearing welding. The welding machine cannot have wind during welding, and is suitable for indoor operation. The carbon dioxide protection welding has the advantages of low cost, simple operation, small deformation after welding and the like.
As an alternative embodiment, ribs 7 are provided at the transition between the vertical surface 2 and the second horizontal surface 3.
In this embodiment, a rib 7 is provided at the transition between the vertical surface 2 and the second horizontal surface 3 in order to strengthen the rigidity of the abutment between the vertical surface 2 and the second horizontal surface 3. The ribs 7 are manufactured by adopting a stamping forming processing mode and are integrally formed with adjacent parts.
Preferably, the height of the ribs 7 is 5 mm.
As an alternative embodiment, the second horizontal plane 3 is provided with a first bolt mounting hole 8, and the inclined plane 4 is provided with a second bolt mounting hole 9.
In the present embodiment, in order to enhance the firmness of the connection of the bracket with the battery pack protrusion 10 and the floor cross member 12, bolt mounting holes, i.e., the first bolt mounting hole 8 and the second bolt mounting hole 9, are provided on the second horizontal surface 3 and the inclined surface 4 of the bracket, respectively. The second horizontal surface 3 of the bracket is fastened with the bottom flange 11 of the battery pack protruding portion 10 by the cooperation of bolts and nuts, and the inclined surface 4 of the bracket is fastened with the floor cross beam 12.
As an alternative embodiment, both the first side 5 and the second side 6 are provided with turned-ups.
In this embodiment, in order to increase the stiffness of the first 5 and second 6 sides of the bracket, cuffs are provided on both sides.
The foregoing description of the embodiments of the present invention should not be taken as limiting the scope of the invention, but rather should be construed as falling within the scope of the invention, as long as the invention is modified or enlarged or reduced in terms of equivalent variations or modifications, equivalent proportions, or the like, which are included in the spirit of the invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811217140.9A CN111081918B (en) | 2018-10-18 | 2018-10-18 | A new energy vehicle battery pack bracket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811217140.9A CN111081918B (en) | 2018-10-18 | 2018-10-18 | A new energy vehicle battery pack bracket |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111081918A CN111081918A (en) | 2020-04-28 |
| CN111081918B true CN111081918B (en) | 2025-04-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811217140.9A Active CN111081918B (en) | 2018-10-18 | 2018-10-18 | A new energy vehicle battery pack bracket |
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| CN (1) | CN111081918B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036296B (en) * | 2021-03-18 | 2023-12-15 | 奇瑞新能源汽车股份有限公司 | Battery pack lower shell and battery pack with same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205523642U (en) * | 2016-04-28 | 2016-08-31 | 长城汽车股份有限公司 | Vehicle battery wraps mounting structure , is used for protective cradle and vehicle of vehicle battery package |
| CN208970594U (en) * | 2018-10-18 | 2019-06-11 | 上汽通用五菱汽车股份有限公司 | A kind of new energy car battery bag support |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5071538B2 (en) * | 2010-09-03 | 2012-11-14 | トヨタ自動車株式会社 | Battery mounting structure for vehicles |
| KR101655482B1 (en) * | 2010-12-01 | 2016-09-07 | 현대자동차주식회사 | Electric Vehicle Battery Mounting Device |
| KR101241162B1 (en) * | 2011-04-07 | 2013-03-13 | 기아자동차주식회사 | Structure for mounting high voltage battery pack in vehicle |
| JP2013014274A (en) * | 2011-07-06 | 2013-01-24 | Mazda Motor Corp | Battery mounting structure for electric vehicle |
| KR101315741B1 (en) * | 2012-03-23 | 2013-10-10 | 현대자동차주식회사 | Battery Pack Case Assembly for Electric Vehicles Using Plastic Composite and method for manufacturing the same |
| JP6122807B2 (en) * | 2014-04-25 | 2017-04-26 | 本田技研工業株式会社 | Car battery mounting structure |
| JP6507978B2 (en) * | 2015-10-06 | 2019-05-08 | トヨタ自動車株式会社 | Battery pack fixing structure |
| JP6610412B2 (en) * | 2016-04-26 | 2019-11-27 | トヨタ自動車株式会社 | Vehicle battery mounting structure |
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2018
- 2018-10-18 CN CN201811217140.9A patent/CN111081918B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205523642U (en) * | 2016-04-28 | 2016-08-31 | 长城汽车股份有限公司 | Vehicle battery wraps mounting structure , is used for protective cradle and vehicle of vehicle battery package |
| CN208970594U (en) * | 2018-10-18 | 2019-06-11 | 上汽通用五菱汽车股份有限公司 | A kind of new energy car battery bag support |
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| Publication number | Publication date |
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| CN111081918A (en) | 2020-04-28 |
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