CN109411661A - Electric vehicle and its battery box body, battery case - Google Patents
Electric vehicle and its battery box body, battery case Download PDFInfo
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- CN109411661A CN109411661A CN201811325045.0A CN201811325045A CN109411661A CN 109411661 A CN109411661 A CN 109411661A CN 201811325045 A CN201811325045 A CN 201811325045A CN 109411661 A CN109411661 A CN 109411661A
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- box body
- battery box
- deck assembly
- bottom deck
- battery
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- 238000001816 cooling Methods 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000000110 cooling liquid Substances 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims description 37
- 230000037361 pathway Effects 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 6
- 239000004411 aluminium Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 5
- 238000000926 separation method Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims 1
- 239000002826 coolant Substances 0.000 abstract description 9
- 238000009413 insulation Methods 0.000 abstract description 7
- 238000004321 preservation Methods 0.000 abstract description 3
- 238000012546 transfer Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000003466 welding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000013475 authorization Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to a kind of electric vehicle and its battery box bodies, battery case.The bottom deck assembly of battery case is equipped with cooling structure, cooling structure includes two layers or more spaced hollow channel in the up-down direction, hollow channel in top is formed for the cooling duct logical for cooling liquid stream, heat-barrier material is filled in the hollow channel being below, when battery case in the process of running, coolant liquid in cooling duct can cool down the battery modules in battery case, simultaneously, heat-barrier material is filled in the hollow channel of lower section, so that forming one layer of heat preservation thermal insulation layer, the heat transfer in external environment is avoided into battery case, heat-barrier material avoids influence of the heat in external environment to coolant liquid, the performance of battery case caused by solving the problems, such as therefore is affected；After being filled with heat-barrier material in bottom deck assembly, it can be also substantially reduced the weight of bottom deck assembly, and hollow structure is set and can also ensure that the structural strength of bottom deck assembly.
Description
Technical field
The present invention relates to a kind of electric vehicle and its battery box bodies, battery case.
Background technique
With flourishing for electric car, requirement of the market to its course continuation mileage is also higher and higher, increases battery case
Capacity is extremely urgent.At the same time, with the raising of energy density, the battery core of high capacity is continuously developed and uses, and battery core produces
Heat is also higher and higher, and excessively high heat causes irreversible negative effect to battery case performance and service life, seriously constrains
The development of electric car.Therefore, carrying out suitable heat management control and design to battery case becomes most important, become after
Another technological difficulties and core competitiveness after BMS.
The cooling structure of existing electrokinetic cell system is usually that coolant flow channel is arranged on battery box body, wherein cooling stream
Road is mostly inflation type cold plate, harmonica-shaped tube, snakelike plate pipe or soldering formula punching press cold plate.Wherein every kind of structure all exists corresponding
It is insufficient:
1, the wall thickness that inflation type cold plate is processed due to blowing-up technology is relatively thin, in practical bad working environments, due to being squeezed and deformed meeting
Cause Local cooling effect undesirable, or even the risk of leakage.
2, harmonica-shaped tube is mostly that the width of 70-100mm commonly uses profile, and the narrow film-cooled heat of width is small, and cooling effect is bad and samming
Property is poor.
3, snakelike plate pipe and soldering formula punching press cold plate manufacturing process are complicated, and the production cycle is long, and weight heavy and light quantization degree is low.
Meanwhile cooling scheme in the prior art generally use with the independent liquid cooling structure part of cabinet, such as cold plate, mouth organ
Pipe, snakelike tube sheet etc..Increased liquid cooling device at least makes the weight gain 7kg of entire battery case, that is, is unfavorable for vehicle lightweight, influences
Course continuation mileage, and reduce the energy density of battery system totality.And there is independent cooling structure Battery case, it is filled in system
Timing will increase cold plate assembly station, reduce the efficiency of assembling line.
There are also a kind of relatively light-weighted cold plates in the prior art, but since the general wall thickness of lightweight cold plate is relatively thin, electricity
Cell system is the deisgn product of long life cycle again, has the risk of vibrating failure in box house, may cause safety problem.
There are also a kind of separate type cooling structures, the Chinese patent that such as Authorization Notice No. is CN207852857U in the prior art
A kind of modular battery box body disclosed in document, including bottom plate and the water-cooled plate being arranged on bottom plate, water-cooled plate passes through corresponding
Pipeline connection formed water-cooling system, this cooling structure be exactly water-cooled plate is specially provided with inside battery case, belong to separation
Formula cooling structure be there is a problem that above-mentioned many.Have in the prior art as the structure of water-cooled plate very much, such as Authorization Notice No.
A kind of extrusion aluminum-type material water-cooled plate is disclosed for the Chinese patent literature of CN207868347U.This separate type cooling structure is not
It only needs to consider safe fixed form, can also occupy housing interior volume, influence the quantity of battery core arrangement, reduce cabinet and hold
Amount, at the same it is also higher using the entire battery system development cost of the liquid cooling structure of separate type.
In the prior art there are also cooling water channel is set up directly on the scheme on battery case bottom plate, as Authorization Notice No. is
A kind of battery case disclosed in the Chinese patent literature of CN207398228U, the battery case include cabinet, and the bottom deck assembly of cabinet includes
Bottom plate and cover board, bottom plate be equipped with multiple grooves arranged side by side, cover board covering be arranged on bottom plate by above-mentioned groove cover from
And coolant flow channel is formed, meanwhile, it is additionally provided with corresponding inlet opening and fluid hole on bottom plate, in use process, coolant liquid is cold
But it circulates to take away the heat in battery case in runner, cooling water channel is integrated on cabinet by this structure battery case, in this way
It just can be avoided and the above problem brought by water channel be separately provided.But for battery case, on the one hand to consider that itself sends out
Heat brought by heat, the influence on the other hand also needing to consider external environment to battery case, the battery case of these above-mentioned structures
It can not solve the problem of that influence of the temperature to battery case in external environment causes battery case performance to be affected.
Summary of the invention
The present invention provides a kind of battery case, to solve existing battery case because performance of the ambient temperature to battery case is made
The problem of at influencing；Meanwhile the present invention also provides the battery box body in above-mentioned battery case and using the electronic of the battery case
Vehicle.
Battery box body of the invention adopts the following technical scheme that
Battery box body, including battery box body, the battery box body has the bottom deck assembly extended along the longitudinal direction, described
Bottom deck assembly is equipped with cooling structure, and the cooling structure includes spaced hollow logical in the up-down direction two layers or more
Road, the hollow channel in top are formed for the cooling duct logical for cooling liquid stream, are filled in the hollow channel being below
There is heat-barrier material, the cooling duct has inlet and liquid outlet.
The bottom deck assembly includes more than two bottom plates and the crossbeam that is arranged between two neighboring bottom plate, the bottom
It is corresponded in board group part and is equipped with the cooling structure on the bottom plate of the battery modules.
The cooling duct includes feed pathway and liquid outlet channel arranged side by side, the feed pathway and liquid outlet channel
One end connection, the other end are respectively formed liquid feeding end and outlet end, are equipped in the feed pathway and liquid outlet channel multiple along a left side
Right direction extension and in the longitudinal direction spaced divider, the divider is by corresponding channel partition at a plurality of preceding
The channel branch being arranged side by side in rear direction.
One end of bottom plate equipped with cooling structure is connection end, the other end is closed end, and the liquid feeding end and outlet end are equal
The bottom plate is set at the position at connection end, the connection end of two bottom plates of arbitrary neighborhood is in the same of bottom deck assembly
Side.
The material of the bottom deck assembly is aluminum alloy material, and the hollow channel in the cooling structure of the bottom deck assembly passes through
Aluminium extrusion is process.
The battery box body further includes peripheral frame, and the peripheral frame is corresponding to be welded to connect in the circumferential side of the bottom deck assembly
On.
The battery box body further includes peripheral frame, and the peripheral frame is corresponding to be welded to connect in the circumferential side of the bottom deck assembly
On, the both ends of the crossbeam are correspondingly connected in the peripheral frame, close to bottom deck assembly end position at crossbeam and peripheral frame it
Between be equipped with reinforcing rib.
The peripheral frame and crossbeam are the aluminium alloy extrusions of hollow structure.
Battery case of the invention adopts the following technical scheme that
Battery case, including battery box body, battery box body include battery box body, and the battery box body has along front and back
To the bottom deck assembly of extension, the bottom deck assembly is equipped with cooling structure, and the cooling structure includes two layers or more in upper and lower
Upward spaced hollow channel, the hollow channel in top are formed for the cooling duct logical for cooling liquid stream, are in
Heat-barrier material is filled in the hollow channel of lower section, the cooling duct has inlet and liquid outlet.
The bottom deck assembly includes more than two bottom plates and the crossbeam that is arranged between two neighboring bottom plate, the bottom
It is corresponded in board group part and is equipped with the cooling structure on the bottom plate of the battery modules.
The cooling duct includes feed pathway and liquid outlet channel arranged side by side, the feed pathway and liquid outlet channel
One end connection, the other end are respectively formed liquid feeding end and outlet end, are equipped in the feed pathway and liquid outlet channel multiple along a left side
Right direction extension and in the longitudinal direction spaced divider, the divider is by corresponding channel partition at a plurality of preceding
The channel branch being arranged side by side in rear direction.
One end of bottom plate equipped with cooling structure is connection end, the other end is closed end, and the liquid feeding end and outlet end are equal
The bottom plate is set at the position at connection end, the connection end of two bottom plates of arbitrary neighborhood is in the same of bottom deck assembly
Side.
The material of the bottom deck assembly is aluminum alloy material, and the hollow channel in the cooling structure of the bottom deck assembly passes through
Aluminium extrusion is process.
The battery box body further includes peripheral frame, and the peripheral frame is corresponding to be welded to connect in the circumferential side of the bottom deck assembly
On.
The battery box body further includes peripheral frame, and the peripheral frame is corresponding to be welded to connect in the circumferential side of the bottom deck assembly
On, the both ends of the crossbeam are correspondingly connected in the peripheral frame, close to bottom deck assembly end position at crossbeam and peripheral frame it
Between be equipped with reinforcing rib.
The peripheral frame and crossbeam are the aluminium alloy extrusions of hollow structure.
Electric vehicle of the invention adopts the following technical scheme that
Electric vehicle, including the battery case on vehicle frame and the setting vehicle frame, battery case includes battery box body, battery box body
Including battery box body, the battery box body has the bottom deck assembly extended along the longitudinal direction, and the bottom deck assembly is equipped with
Cooling structure, the cooling structure includes two layers or more spaced hollow channel in the up-down direction, in top
Empty channel is formed for the cooling duct logical for cooling liquid stream, is filled with heat-barrier material in the hollow channel being below, described
Cooling duct has inlet and liquid outlet.
The bottom deck assembly includes more than two bottom plates and the crossbeam that is arranged between two neighboring bottom plate, the bottom
It is corresponded in board group part and is equipped with the cooling structure on the bottom plate of the battery modules.
The cooling duct includes feed pathway and liquid outlet channel arranged side by side, the feed pathway and liquid outlet channel
One end connection, the other end are respectively formed liquid feeding end and outlet end, are equipped in the feed pathway and liquid outlet channel multiple along a left side
Right direction extension and in the longitudinal direction spaced divider, the divider is by corresponding channel partition at a plurality of preceding
The channel branch being arranged side by side in rear direction.
One end of bottom plate equipped with cooling structure is connection end, the other end is closed end, and the liquid feeding end and outlet end are equal
The bottom plate is set at the position at connection end, the connection end of two bottom plates of arbitrary neighborhood is in the same of bottom deck assembly
Side.
The material of the bottom deck assembly is aluminum alloy material, and the hollow channel in the cooling structure of the bottom deck assembly passes through
Aluminium extrusion is process.
The battery box body further includes peripheral frame, and the peripheral frame is corresponding to be welded to connect in the circumferential side of the bottom deck assembly
On.
The battery box body further includes peripheral frame, and the peripheral frame is corresponding to be welded to connect in the circumferential side of the bottom deck assembly
On, the both ends of the crossbeam are correspondingly connected in the peripheral frame, close to bottom deck assembly end position at crossbeam and peripheral frame it
Between be equipped with reinforcing rib.
The peripheral frame and crossbeam are the aluminium alloy extrusions of hollow structure.
The beneficial effects of the present invention are: the bottom deck assembly of battery case of the invention is equipped with cooling structure, cooling structure packet
Two layers or more spaced hollow channel in the up-down direction is included, the hollow channel in top is formed for for cooling liquid stream
Logical cooling duct is filled with heat-barrier material in the hollow channel being below, when battery case in the process of running, cooling duct
In coolant liquid the battery modules in battery case can be cooled down, meanwhile, in the hollow channel of lower section be filled with heat-insulated material
Material avoids the heat transfer in external environment into battery case, specifically, heat-insulated so that forming one layer of heat preservation thermal insulation layer
Material avoids influence of the heat in external environment to coolant liquid, and the performance of battery case caused by solving therefore is affected
The problem of；After being filled with heat-barrier material in bottom deck assembly, it can be also substantially reduced the weight of bottom deck assembly, and be arranged hollow
Structure can also ensure that the structural strength of bottom deck assembly.
Further, the water-cooled plate of bottom plate is made with short production cycle for extrudate, and facilitates multi-vehicle-type battery pack general
Change and use, reduces differently sized batteries packet development cycle and cost.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of the battery case in the embodiment of electric vehicle of the invention；
Fig. 2 is the structural schematic diagram of the battery box body in Fig. 1；
Fig. 3 is the structural schematic diagram of the bottom deck assembly in Fig. 2；
Fig. 4 is the partial enlarged view at bottom plate and crossbeam link position in Fig. 3；
Fig. 5 is the structural schematic diagram of the bottom plate in Fig. 2；
Fig. 6 is the main view of bottom plate；
Fig. 7 is the top view of Fig. 6；
Fig. 8 is the cross-sectional view in the direction B-B in Fig. 6；
Fig. 9 is the cross-sectional view in the direction C-C in Fig. 6；
Figure 10 is the cross-sectional view in the direction A-A in Fig. 6；
In figure: 1, peripheral frame；2, battery modules；3, cooling line；11, lifting lug；12, mast-up；31, the first water pipe head；32,
Two water pipe heads；
33, the first pipeline；34, the second pipeline；4, bottom plate；41, crossbeam；42, reinforcing rib；
43, end bottom plate；
411, the first bottom plate connector；412, the second bottom plate connector；
401, feed liquor cushion chamber；402, go out liquid cushion chamber；403, runner plate；404, plug；405, it is connected to chamber；406, runner separates
Item；407, cooling duct；
4001, support plate；4002, heat-insulated divider；4003, heat insulation path.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The embodiment of electric vehicle of the invention, electric vehicle include the battery case on vehicle frame and the setting vehicle frame, such as Fig. 1
To shown in Figure 10, battery case includes battery box body, and battery box body includes battery box body, and battery box body has along front and back
Direction extend bottom deck assembly, bottom deck assembly be equipped with cooling structure, cooling structure include two layers or more in the up-down direction between
Every the hollow channel of setting, in the present embodiment, hollow channel is specifically equipped with two layers, wherein the hollow channel in top is formed
For the cooling duct 407 logical for cooling liquid stream, heat-barrier material, cooling duct 407 are filled in the hollow channel being below
With inlet and liquid outlet.At the same time, one layer of formation cooling layer that cooling duct is distributed, one layer of heat-barrier material distribution
Space forms thermal insulation layer, and entire bottom plate forms cold plate structure.
In the present embodiment, bottom deck assembly includes more than two bottom plates 4 and is arranged between two neighboring bottom plate 4
Crossbeam 41 corresponds in bottom deck assembly and is equipped with cooling structure on the bottom plate of battery modules 2, specifically, there are two bottom plate is set, simultaneously
End bottom plate 43 is equipped at the front-rear position of bottom plate, end bottom plate 43 is also hollow structure, but due to not set at this
Battery modules 2 are set, therefore the end bottom plate 43 at this is not provided with corresponding cooling structure, can reduce into a certain extent in this way
This.Cost is just reduced specifically, after mainly splicing using multiple bottom plates, so that bottom plate has centainly, in this way a variety of
In vehicle design process, it can be spliced by the bottom plate of different number to meet the design of battery case bottom plate, relative to a monolith
It for sketch plate structure, avoids re-molding, bring redesigns the expenses such as die sinking when vehicle being avoided to change.
As shown in figure 8, cooling duct includes feed pathway and liquid outlet channel arranged side by side, feed pathway and liquid outlet channel
One end connection, specifically, by connection chamber connection, the other end is respectively formed liquid feeding end and outlet end, feed pathway at this both ends
Be equipped in liquid outlet channel it is multiple extend in left-right direction and spaced runner divider 406 in the longitudinal direction, flow
Road divider 406 by corresponding channel partition at a plurality of arranged side by side channel branch in the longitudinal direction, in the present embodiment,
Liquid feeding end is equipped with liquid cushion chamber, and outlet end is equipped with liquid cushion chamber, while the two cushion chambers and corresponding water inlet and water outlet
Mouth is corresponding, can guarantee that liquid can equably pass through from channel branch after two cushion chambers are arranged in this way, guarantees cooling imitate
Rate.As shown in figure 8, being separated between feed pathway and liquid outlet channel by runner plate 403, plug 404 is used for the both ends in channel
Closing.Meanwhile as shown in figure 9, a branch of heat insulation path more than 4003, these flow branch are separated by fever divider 4002,
Support plate 4001 is equipped at the position for corresponding to runner plate at medium position simultaneously, for increasing bottom plate strength of joint.
One end of bottom plate equipped with cooling structure is connection end, the other end is closed end, and liquid feeding end and outlet end are respectively provided with
In bottom plate at the position at connection end, the connection end of two bottom plates of arbitrary neighborhood is in the same side of bottom deck assembly, such
Words make the connector of each bottom plate be in the same side, arrange convenient for the separation of connection water pipe and high-pressure conductive copper bar.
It specifically, is that the first bottom plate connector 411 and the second bottom plate connect respectively as shown in figure 5, being set on bottom plate there are two connector
First 412, the two connect first for intaking, another is for being discharged.Water route between bottom plate is connected to by cooling line 3,
Cooling line includes the first pipeline 33 and the second pipeline 34, one of them is inlet pipeline to the two pipelines, the other is water outlet
Pipeline, meanwhile, the two pipelines are connected to respectively at being arranged in the second water pipe head 32 for the first water pipe head 31 in peripheral frame.
In the present embodiment, the material of bottom deck assembly is aluminum alloy material, hollow logical in the cooling structure of bottom deck assembly
Road is process by aluminium extrusion, can reduce the weight of bottom plate entirety in this way, meanwhile, bottom plate whole installation is in integral type
After hollow structure, it can guarantee the intensity of bottom plate.Certainly, some special structures are also needed using machining cooperation processing in runner
It forms.
Battery box body further includes peripheral frame 1, and peripheral frame 1 is corresponding to be welded to connect the crossbeam 41 on the circumferential side of bottom deck assembly
Both ends be correspondingly connected in peripheral frame 1, close to bottom deck assembly end position at crossbeam 41 and peripheral frame 1 between be equipped with reinforcing rib
42.Peripheral frame 1 and crossbeam are the aluminium alloy extrusions of hollow structure.Its insole board, peripheral frame 1, crossbeam and corresponding reinforcing rib 42
Equal components are all made of welding procedure connection, can guarantee that the intensity of structure, specific welding procedure can be stirred using FSW in this way
The welding manners such as friction welding or MIG weldering.Lifting lug 11 and mast-up 12 are additionally provided in peripheral frame.
All structures of the Battery case are the profile that hollow inside has reinforcing rib structure, not only light-weighted same
When also increase the structural strength of entire Battery case.Aluminum profile formula cold plate (bottom plate equipped with cooling structure) in the patent of invention
It is arranged only at the underface of battery modules, cooling water channel uses parallel-connection structure.By FSW Friction Stir Welding by cold plate and mould group
Bracket tow sides are welding as one.It is welded inside battery pack by MIG and welds the right angle that cold plate is formed with side bar, battery
It is welded by FSW agitating friction and cold plate and side bar is formed into unified plane-welding in packet bottom.In order to guarantee cabinet IP grade, inner bottom
Surrounding plays temperature resistant encapsulation glue at plate and side bar.The chassis armor of entire cabinet external spray low thermal conductivity, improves scratch-resistant
Property and thermal insulation property.Battery case upper cover is that flame-proof ABS plastic uptake technique is made.
The bottom deck assembly of battery case of the invention be equipped with cooling structure, cooling structure include two layers or more in above-below direction
Upper spaced hollow channel, the hollow channel in top are formed for the cooling duct logical for cooling liquid stream, are in down
Side hollow channel in be filled with heat-barrier material, when battery case in the process of running, the coolant liquid in cooling duct can be to electricity
Battery modules in the case of pond are cooled down, meanwhile, heat-barrier material is filled in the hollow channel of lower section, so that forming one layer of heat preservation
Thermal insulation layer avoids the heat transfer in external environment into battery case, specifically, heat-barrier material avoids in external environment
Influence of the heat to coolant liquid, the performance of battery case caused by solving the problems, such as therefore is affected；It will be in bottom deck assembly
After being filled with heat-barrier material, it can be also substantially reduced the weight of bottom deck assembly, and hollow structure is set and can also ensure that bottom plate
The structural strength of component.
In other embodiments of the invention, the quantity of bottom plate can also specifically be set according to the actual needs of battery modules
It sets；The processing method of feed pathway and liquid outlet channel can also use splicing structure, i.e., first process slot on one block of plate, then
A closed plate is covered again；Meanwhile the material of bottom plate can also use other materials, such as iron, copper or other thermal coefficients
Preferable material.
The structure of battery case in the embodiment of the embodiment of battery case of the invention, the battery case and above-mentioned electric vehicle
It is identical, it repeats no more.
Battery in the embodiment of the embodiment of battery box body of the invention, the battery box body and above-mentioned electric vehicle
The structure of box body is identical, repeats no more.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. battery box body, including battery box body, the battery box body has the bottom deck assembly extended along the longitudinal direction,
Be characterized in that: the bottom deck assembly is equipped with cooling structure, and the cooling structure is spaced in the up-down direction including two layers or more
The hollow channel of setting, hollow channel in top formed for the cooling duct logical for cooling liquid stream, is below
Heat-barrier material is filled in empty channel, the cooling duct has inlet and liquid outlet.
2. battery box body according to claim 1, it is characterised in that: the bottom deck assembly includes more than two bottom plates
And the crossbeam between two neighboring bottom plate is set, it corresponds in the bottom deck assembly and is equipped on the bottom plate of the battery modules
The cooling structure.
3. battery box body according to claim 2, it is characterised in that: the cooling duct includes feed liquor arranged side by side
Channel and liquid outlet channel, the feed pathway is connected to one end of liquid outlet channel, the other end is respectively formed liquid feeding end and outlet end,
Multiple extension and spaced separations in the longitudinal direction in left-right direction are equipped in the feed pathway and liquid outlet channel
Item, the divider is by corresponding channel partition at a plurality of channel branch being arranged side by side in the longitudinal direction.
4. battery box body according to claim 3, it is characterised in that: one end of the bottom plate equipped with cooling structure is connection
End, the other end are closed end, and the liquid feeding end and outlet end are arranged at the bottom plate close to being connected at the position at end, any phase
The connection end of adjacent two bottom plates is in the same side of bottom deck assembly.
5. battery box body according to claim 4, it is characterised in that: the material of the bottom deck assembly is aluminium alloy material
Matter, the hollow channel in the cooling structure of the bottom deck assembly are process by aluminium extrusion.
6. battery box body described in any one of -5 according to claim 1, it is characterised in that: the battery box body also wraps
Peripheral frame is included, the peripheral frame is corresponding to be welded to connect on the circumferential side of the bottom deck assembly.
7. battery box body according to claim 2, it is characterised in that: the battery box body further includes peripheral frame, described
Peripheral frame is corresponding to be welded to connect on the circumferential side of the bottom deck assembly, and the both ends of the crossbeam are correspondingly connected in the peripheral frame
On, reinforcing rib is equipped between the crossbeam and peripheral frame at the end position of bottom deck assembly.
8. battery box body according to claim 7, it is characterised in that: the peripheral frame and crossbeam are the aluminium of hollow structure
Alloy profile.
9. battery case, including battery box body, the battery box body has the bottom deck assembly extended along the longitudinal direction, the bottom
Board group part is equipped with battery modules, and the battery box body is the battery box body as described in any one of claim 1-8.
10. electric vehicle, including the battery case on vehicle frame and the setting vehicle frame, the battery case includes battery box body, institute
Stating battery box body has the bottom deck assembly extended along the longitudinal direction, and the bottom deck assembly is equipped with battery modules, the battery
Box body is the battery box body as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811325045.0A CN109411661A (en) | 2018-11-08 | 2018-11-08 | Electric vehicle and its battery box body, battery case |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811325045.0A CN109411661A (en) | 2018-11-08 | 2018-11-08 | Electric vehicle and its battery box body, battery case |
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| CN109411661A true CN109411661A (en) | 2019-03-01 |
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| CN201811325045.0A Pending CN109411661A (en) | 2018-11-08 | 2018-11-08 | Electric vehicle and its battery box body, battery case |
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| CN110474005A (en) * | 2019-09-06 | 2019-11-19 | 荣盛盟固利新能源科技有限公司 | Lithium battery temperature management case and lithium battery system |
| CN111276656A (en) * | 2020-02-18 | 2020-06-12 | 浙江吉智新能源汽车科技有限公司 | Battery pack lower box assembly integrated with efficient thermal management system |
| CN111430628A (en) * | 2020-04-25 | 2020-07-17 | 重庆仟和镁业科技有限公司 | High heat dissipation magnesium alloy battery box |
| CN111477792A (en) * | 2020-04-15 | 2020-07-31 | 中车资阳机车有限公司 | Battery pack of battery system of hybrid power locomotive and battery system |
| CN111509156A (en) * | 2020-04-15 | 2020-08-07 | 力神动力电池系统有限公司 | Highly-integrated compact battery system |
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| CN112582702A (en) * | 2019-09-11 | 2021-03-30 | 中车时代电动汽车股份有限公司 | Liquid cooling battery box |
| CN112952277A (en) * | 2021-02-04 | 2021-06-11 | 上汽大众汽车有限公司 | Battery module assembly with integrated thermal management system and battery management system |
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| WO2022022547A1 (en) * | 2020-07-28 | 2022-02-03 | 厦门海辰新能源科技有限公司 | Battery box bottom plate and battery box |
| CN114530643A (en) * | 2020-10-30 | 2022-05-24 | 恒大新能源技术(深圳)有限公司 | Battery pack box and battery pack |
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| CN112952277A (en) * | 2021-02-04 | 2021-06-11 | 上汽大众汽车有限公司 | Battery module assembly with integrated thermal management system and battery management system |
| CN113154903A (en) * | 2021-04-28 | 2021-07-23 | 苏州汇川技术有限公司 | Radiator manufacturing process and radiator |
| WO2023077383A1 (en) * | 2021-11-04 | 2023-05-11 | 宁德时代新能源科技股份有限公司 | Box assembly of battery, battery, and method for manufacturing box assembly of battery |
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