CN117083193A - Strength member for vehicle-mounted battery case and mounting structure thereof - Google Patents
Strength member for vehicle-mounted battery case and mounting structure thereof Download PDFInfo
- Publication number
- CN117083193A CN117083193A CN202280024716.8A CN202280024716A CN117083193A CN 117083193 A CN117083193 A CN 117083193A CN 202280024716 A CN202280024716 A CN 202280024716A CN 117083193 A CN117083193 A CN 117083193A
- Authority
- CN
- China
- Prior art keywords
- battery module
- battery case
- protection
- vehicle
- strength member
- 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.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 239000006185 dispersion Substances 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- 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
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention aims to provide a strength member for a vehicle-mounted battery case, which is used for protecting a battery module against an input load from the outside and fixing the battery module to the battery case, and which has excellent protection effect due to a dispersion of the load on the battery module, and is also effective for realizing miniaturization of the battery case, and an installation structure thereof. The strength member is characterized in that, when the battery module is housed in a battery case comprising a frame body and a bottom plate disposed at the bottom of the frame body and mounted on a vehicle, the strength member is used for fixedly holding the battery module in the battery case, the strength member comprises a protection member and a pair of end members connected with the end parts of the two sides of the protection member, the pair of end members are disposed at the inner sides of the left and right side walls of the frame body, the protection member is used for fixedly holding the battery module, and a plurality of protection members are connected through a connecting member, and the connecting member is provided with a fastening part used for fastening to the bottom plate and a fixing part used for fixedly holding the battery module.
Description
Technical Field
The present invention relates to a strength member for fixedly holding a battery module in a battery case and a mounting structure thereof when the battery module is stored in the battery case and mounted on a vehicle.
Background
In an electric vehicle, a hybrid vehicle, or the like, a battery module composed of a secondary battery is mounted as a driving source.
The battery module is also called a battery pack, a battery assembly.
For example, when a battery module is mounted under a chassis of a vehicle, the battery module needs to be protected against an impact from the outside.
For example, patent document 1 discloses a battery pack that is fastened and fixed together so as to sandwich a battery module between a bracket and a mounting member provided in a lower case.
However, in such a configuration, there is a risk that the input load borne by the bracket is directly transmitted to the battery module.
In addition, the strength and the installation space of the installation member provided in the lower case also become problems.
Patent document 1 Japanese patent No. 6798310
Disclosure of Invention
Technical problem to be solved by the invention
The present invention aims to provide a strength member for a vehicle-mounted battery case, which is used for protecting a battery module against an input load from the outside and fixing the battery module to the battery case, and which has excellent protection effect due to a dispersion of the load on the battery module, and is also effective for realizing miniaturization of the battery case, and an installation structure thereof.
Technical proposal for solving the technical problems
The strength member according to the present invention is characterized in that, when a battery module is housed in a battery case comprising a frame body and a bottom plate disposed at the bottom of the frame body and mounted on a vehicle, the strength member is configured to fixedly hold the battery module in the battery case, and the strength member includes a protection member and a pair of end members connected to both end portions of the protection member, the pair of end members being disposed inside the left and right side walls of the frame body, respectively, the protection member being configured to fixedly hold the battery module, and a plurality of protection members being connected by a connecting member, the connecting member having a fastening portion for fastening to the bottom plate and a fixing portion for fixedly holding the battery module.
The battery case herein refers to a battery case in which a rechargeable secondary battery, a control device thereof, and the like are stored, and is mounted, for example, under the chassis of a vehicle.
The right-left direction refers to a direction in which an impact from the outside is easily received.
For example, the battery case has a frame body composed of a front wall, a rear wall, and side walls (left and right walls), and a bottom panel disposed at the bottom of the frame body.
In the present invention, the input load from the outside is dispersed to the whole battery case via the fastening portion of the coupling member and the bottom plate.
Further, a fixing portion of the battery module and a fastening portion to the bottom plate may be provided for each of the plurality of protection members, so that the load may be dispersed to the entire battery case via the protection members.
In the present invention, the connecting member may have a plurality of protection members extending in the lateral direction, and the fixing portion of the battery module may be disposed at a position further inward than the fastening portion of the connecting member with the bottom plate.
The input load from the outside received by the strength member is transmitted from the outside to the inside, and is transmitted to the connecting member.
In this case, the connecting member has the fastening portion with the bottom plate on the outer side and the fixing portion of the battery module on the inner side, and thus the input load can be released to the bottom plate before the input load is transmitted to the fixing portion, so that the force transmitted to the battery module is suppressed.
In the present invention, the end member is preferably fastened to the housing so as to be positioned inside the side wall of the housing.
Since the strength members (end members) are directly fastened to the left and right walls in this way, an input load from the outside is effectively transmitted to the strength members, and the input load is dispersed to the entire battery case via the fastening portions with the bottom plate.
The strength member is composed of a plurality of members and members, and thus easily absorbs load.
The method of connecting the structural members and the members is not limited, and may be, for example, by friction stir welding or welding.
In the present invention, the plurality of members and/or the members constituting the strength member may be each made of an extruded material having a hollow cross-sectional shape.
The input load can be absorbed by the deformation of the hollow portion.
The present invention relates to a mounting structure of a strength member for fixing and holding a battery module in a battery case mounted on a vehicle, wherein the battery case is formed by connecting a bottom plate to a bottom of the frame, the strength member includes a protection member and a pair of end members connected to both end portions of the protection member, the pair of end members are fixed to the frame so as to be positioned inside left and right side walls of the frame, the protection member is formed by connecting a plurality of protection members by a connecting member, and the connecting member is fastened to the bottom plate and has a fixing portion of the battery module.
By adopting such a mounting structure, the battery case as a whole becomes compact.
ADVANTAGEOUS EFFECTS OF INVENTION
The strength member for a vehicle-mounted battery case according to the present invention is composed of a plurality of members and members including the connecting members, and therefore, external load is easily absorbed, and the load can be dispersed to the bottom plate at least via the connecting members, with the result that the protection effect of the battery module is improved.
Drawings
Fig. 1 shows a structural example of a strength member according to the present invention.
Fig. 2 shows an example of a state before the structural members are connected.
Fig. 3 shows an example of fastening to a battery case.
Fig. 4 shows a fixed example of a battery module.
Fig. 5 shows an enlarged view of the region a in fig. 4.
Fig. 6 shows example 2.
Detailed Description
A structural example of the strength member for a vehicle-mounted battery case and an installation structure thereof according to the present invention will be described with reference to the following drawings.
For example, the strength member 20 of the present invention is fastened to the battery case 10 mounted under the chassis of the vehicle, and fixes the battery module 100.
The structure and material of the battery case are not limited, and for example, as shown in fig. 3, the frame may be composed of a left wall 11, a right wall 12, a front wall 13, and a rear wall 14, which are aluminum frames, and the bottom plate 15 may be attached so as to fill the opening of the frame.
For convenience of explanation, the left-right direction is set to be a direction in which an impact from the outside is easily received, and the inner and outer sides are based on the battery case.
As shown in fig. 1, the strength member 20 is composed of a protection member and end members 21 connected to both sides of the protection member.
The protection member is also divided into a plurality of protection parts 29, and extends in the left-right direction via the connection member 28.
The connecting member 28 has a fastening portion 27 fastened to the bottom plate 15, and a fixing portion 26 for fixing the battery module 100 at a position further inward than the fastening portion 27.
The connecting member 28 shown in fig. 1 has a laterally symmetrical shape, but may be a connecting member in which 2 members are abutted against each other at end surfaces so as to extend in the lateral direction.
In the present invention, the end member 21 has the fastening portion 22 to fasten to the left and right walls 11 and 12 of the battery case, and the protection member 29 has the fixing portion 25 on the inner side of the end member 21 to fix the battery module 100.
In this case, the fastening portion to be fastened to the bottom plate 15 may be provided also in the protective member 29, and in this case, it is preferable to provide the fixing portion 25 of the battery module further inside than the fastening portion.
For example, as shown in fig. 6, the protection member may further include an intermediate member 30 for connecting the 2 connection members 28, and may be appropriately selected depending on the structure of the battery module, the number of mounting, the structure of the battery case, and the like.
The strength member 20 of the present embodiment is an example in which the end member 21, the connecting member 28, and the protection member 29 are made of an aluminum extruded material, but is not limited thereto.
Fig. 2 shows an enlarged view of a portion of the connecting member 28 and the protecting member 29 before connection.
The connecting member 28 is an aluminum extruded material having a plurality of hollow portions 28a penetrating in the vertical direction.
The connecting member 28 has a fixing portion 26 to the battery module at a position further inward than the hollow portion 28a, has a fastening portion 27 to the bottom plate at a position further outward than the hollow portion 28a, and has a substantially コ -shaped insertion portion 28b opening at the outer side at a position further outward than the fastening portion 27.
The protection member 29 is an aluminum extruded material having a plurality of hollow portions 29a penetrating in the left-right direction, and is coupled to the coupling member 28 by fitting the inner end portion thereof to the insertion portion 28b of the coupling member 28.
For example, the connection can be made by friction stir welding, but is not limited thereto.
Fig. 3 and 4 show an example in which the battery module 100 is fixed in the battery case 10 using the strength member 20 of the present embodiment.
As shown in fig. 3, the left and right walls 11, 12 have fastened portions 11c at predetermined intervals from the ribs 11b facing inward from the lower side of the inner wall 11a, and the fastened portions 11c can be fastened to the fastening portions 22 provided in the end members 21.
Thereby, the strength member 20 is fastened to the left and right walls 11, 12.
The strength member 20 in the present embodiment has a connecting member 28 at approximately the middle in the left-right direction.
Therefore, in the present embodiment, the bracket 17 is provided at approximately the middle of the bottom plate 15 in the left-right direction, and the bracket 17 is fastened with the fastening portion 27 provided in the connecting member 28 by bolts.
Thereby, the strength member 20 is fastened to the bottom panel 15.
As shown in fig. 4, holding portions 101 and 102 for holding the battery module 100 are fixed to the fixing portions 26 and 25 provided in the connecting member 28 and the protection member 29 of the strength member 20, respectively.
The battery module 100 of the present embodiment is an example in which the holding portions 102 are provided at positions corresponding to the fixing portions 26 of the coupling members 28 in addition to the holding portions 101, 101 that sandwich the battery module composed of a plurality of secondary batteries from the left-right direction, but is not limited thereto.
The protection portions 102, 102a of the battery modules 100, 100a can be bolted to the 2 fixing portions 26, 26 of the 1 coupling member 28 so as to be staggered laterally from the front and rear sides, respectively.
Fig. 5 is a perspective view of the region a of fig. 4 enlarged.
For example, an external load received by the left wall 11 is transmitted to the protection component 29 via the end member 21 fastened thereto.
As shown in fig. 5, the protection component 29 transmits the load to the coupling member 28, and the load is transmitted from the fastening portion 27 of the coupling member 28 to the bracket 17 via the bolt, and is dispersed from the bracket 17 to the bottom panel 15.
Therefore, load transmission from the fixing portion 26 on the inner side than the fastening portion 27 to the battery modules 100, 100a via the holding portion 102 can be suppressed.
Industrial applicability
The strength member according to the present invention is useful for improving the protection effect when a battery is mounted on a vehicle.
Description of the reference numerals
20. A strength member; 21. a terminal member; 26. a fixing part; 27. a fastening part; 28. a connecting member; 29. and a protection member.
Claims (4)
1. A strength member for a vehicle-mounted battery case is characterized in that,
when the battery module is accommodated in a battery case comprising a frame and a bottom plate disposed at the bottom of the frame and mounted on a vehicle, the strength member is used to fixedly hold the battery module in the battery case,
the strength component has a protection member and a pair of end members connected to the ends of both sides of the protection member,
the pair of end members are disposed inside the left and right side walls of the frame,
the protection component is used for fixedly holding the battery module and is formed by connecting a plurality of protection components through a connecting component,
the connecting member has a fastening portion for fastening to the bottom plate, and a fixing portion for fixedly holding a battery module.
2. The strength member for a vehicle-mounted battery case according to claim 1, wherein,
the connecting member is provided for extending the plurality of protection components in the left-right direction,
the fixing portion of the battery module is disposed further inward than the fastening portion of the connecting member and the bottom plate.
3. The strength member for a vehicle-mounted battery case according to claim 1 or 2, wherein,
the plurality of members and/or components constituting the strength member are each made of an extruded material having a hollow cross-sectional shape.
4. A structure for mounting a strength member, characterized in that,
a strength member for fixedly holding the battery module in a battery case mounted in a vehicle,
the battery case is formed by a frame body and a bottom plate connected with the bottom of the frame body,
the strength component has a protection member and a pair of end members connected to the ends of both sides of the protection member,
the pair of end members are fixed to the frame so as to be positioned inside the left and right side walls of the frame,
the protection component is formed by connecting a plurality of protection components through a connecting component,
the coupling member is fastened to the bottom panel and has a fixing portion of the battery module.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-076917 | 2021-04-29 | ||
| JP2021076917 | 2021-04-29 | ||
| PCT/JP2022/008204 WO2022230346A1 (en) | 2021-04-29 | 2022-02-28 | Strength member for in-vehicle battery case, and attachment structure for strength member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117083193A true CN117083193A (en) | 2023-11-17 |
Family
ID=83846878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280024716.8A Pending CN117083193A (en) | 2021-04-29 | 2022-02-28 | Strength member for vehicle-mounted battery case and mounting structure thereof |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPWO2022230346A1 (en) |
| CN (1) | CN117083193A (en) |
| WO (1) | WO2022230346A1 (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016115611B3 (en) * | 2016-08-23 | 2018-02-15 | Benteler Automobiltechnik Gmbh | Battery carrier with a frame made of hollow profiles |
| CN112997351A (en) * | 2018-11-13 | 2021-06-18 | 瑞伟安知识产权控股有限公司 | Modular electric vehicle battery pack frame with extruded aluminum structural members |
| CN210110876U (en) * | 2019-07-15 | 2020-02-21 | 江苏时代新能源科技有限公司 | Battery lower box body and battery system |
| CN212810461U (en) * | 2020-08-14 | 2021-03-26 | 比亚迪股份有限公司 | Battery pack and automobile |
-
2022
- 2022-02-28 JP JP2023517099A patent/JPWO2022230346A1/ja active Pending
- 2022-02-28 WO PCT/JP2022/008204 patent/WO2022230346A1/en active Application Filing
- 2022-02-28 CN CN202280024716.8A patent/CN117083193A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2022230346A1 (en) | 2022-11-03 |
| WO2022230346A1 (en) | 2022-11-03 |
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| PB01 | Publication | ||
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