CN109515216A - Power battery of pure electric automobile assembly structure - Google Patents
Power battery of pure electric automobile assembly structure Download PDFInfo
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- CN109515216A CN109515216A CN201811488353.5A CN201811488353A CN109515216A CN 109515216 A CN109515216 A CN 109515216A CN 201811488353 A CN201811488353 A CN 201811488353A CN 109515216 A CN109515216 A CN 109515216A
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- assembly
- battery
- fixed
- coldplate
- pure electric
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- 238000007789 sealing Methods 0.000 claims abstract description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 15
- 239000010949 copper Substances 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 238000009826 distribution Methods 0.000 claims description 17
- 230000005611 electricity Effects 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 6
- 239000000725 suspension Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 238000012856 packing Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 8
- 239000007787 solid Substances 0.000 description 5
- 239000000178 monomer Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012356 Product development Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000032677 cell aging Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
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- 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
- 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
- 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
-
- 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
- B60K2001/003—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units
- B60K2001/005—Arrangement or mounting of electrical propulsion units with means for cooling the electrical propulsion units the electric storage means
-
- 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
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
-
- 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)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Battery Mounting, Suspending (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a kind of power battery of pure electric automobile assembly structures comprising the fixed bracket of upper box assembly, battery module, module support deck, support plate, battery thermal management system, lower box assembly, high pressure copper bar, interface end plate assembly and box sealing pad.Power battery of pure electric automobile assembly structure of the invention is arranged in below vehicle body platform, the arrangement of assembly heel row bilayer cells module, the space below traditional vehicle back seat is taken full advantage of in vehicle Z-direction, the sitting comfort of member in cabin is not influenced, while meeting the requirement of vehicle road clearance.Lower box assembly carries the total integral weight of battery, is directly connected to by high-intensitive welding support construction with vehicle stringer, ensure that battery stability.
Description
Technical field
The present invention relates to a kind of electric car components more particularly to a kind of power battery of pure electric automobile assembly structures.
Background technique
Improved based on energy sustainable use and environment for human survival and is considered, world's every country and automobile manufacture commercial city
The technical research and product development for paying much attention to new energy vehicle, especially for multiplying at runtime to the pure electric vehicle of zero environmental
Use vehicle.Pure electric vehicle passenger car has higher requirement to continual mileage, so power battery is needed to have more electricity, corresponding body
Product, weight are larger, and the forward engine room and trunk space of vehicle are limited, therefore pure electric vehicle passenger car power battery is arranged in vehicle more at present
Below body floor；So need to comprehensively consider the knot that crew module space, battery road clearance and battery and vehicle are fixed
Structure reliability, disassembly convenience；The arrangement and Battery case knot of excessive simultaneously battery module, cooling system and electric parts
The sealing of structure is all the difficulties for needing emphasis to consider.
In previous patent, patent CN104118305A discloses a kind of the dynamic of the battery module of integration-in-one structure
Power battery assembly, protection point are mainly the arrangement of the battery module of integral type and the cabinet knot for having sliding rail quick change function
Structure, power battery assembly disclosed in this patent use the concatenated arrangement of multiple standardized modules, and cabinet and vehicle are bolt
Type of attachment, there are notable differences for the two；Patent CN102088066A discloses a kind of battery mould for having dovetail groove fixed form
Block and power battery assembly, protection point are mainly the dovetail groove fixed form of battery module and fix electricity by the form
Pond module and integrated power battery assembly, the bolt fixed form that module uses in this patent, the two is without same or similar guarantor
Protect content；Patent CN105501041A discloses a kind of pure electric sedan housing of power cell structure, compared with the present invention, the electricity
There is opening on the shell pallet of pond, opening is sealed by rubber stopper, with stringer, crossbeam overlapped position using sealant sealing,
Shell integral seal structure with it is entirely different with battery case body seal form of the invention；205112971 U of patent CN is disclosed
A kind of pure electric automobile battery pack, including battery pack and mounting bracket, protect emphatically the fixed structure of integral battery group
And battery service switch structure, it is different from the fixed reinforcement structure of power battery of the invention, while power of the present invention
Battery general name structure does not include service switch；204029898 U of patent CN discloses a kind of pure electric automobile power battery knot
Structure, the fixed structure of battery modules in patent, battery cooling system structure, structural member and electric parts arrangement form and this
Invention is different.
Summary of the invention
It is an object of the present invention to provide a kind of power battery of pure electric automobile assembly structures；It is to manufacture and assembly technology requirement
Low, exploitation is low with manufacturing cost, meets vehicle Ergonomics design demand；Pass through structure cloth rationally compact inside battery assembly
It sets, realizes to the smallest change of traditional vehicle, and can be in different traditional vehicle upper mounting plate applications, while power battery and vehicle
It is fixed reliably convenient with dismounting, and ensure that inside battery good heat radiating, heating effect, improve the reliable of power battery
Property, safety and service life.
The present invention solves technical problem and adopts the following technical scheme that a kind of power battery of pure electric automobile assembly structure,
Including upper box assembly, battery module, module support deck, the fixed bracket of support plate, battery thermal management system, lower box assembly,
High pressure copper bar, interface end plate assembly and box sealing pad；
The lower box assembly is connected and fixed with vehicle lower body longitudinal floor beam；
The battery thermal management system include the first coldplate assembly, the second coldplate total, third coldplate assembly and
4th coldplate assembly composition, the first coldplate assembly, the second coldplate assembly and the fitting of third coldplate assembly are solid
It is scheduled on above lower box assembly, the 4th coldplate assembly fitting is fixed on module support deck, and the module support deck is logical
The fixed bracket of support plate is crossed to be fixed on the lower box assembly；
The battery module includes that three row's battery cells are set as along vehicle X-direction, front end two rows battery cell single layer cloth
It sets, is each attached on lower box assembly, it is rebuilding that third, which arranges battery cell, and wherein lower layer's battery cell of third row is fixed
On lower box assembly, the upper layer battery cell of third row is fixed on module support deck；Pass through high pressure between each battery cell
Copper bar is cascaded；
Arrange that box sealing pad, upper box assembly are fixed on lower box between the upper box assembly and lower box assembly
On, while gasket being compressed；
The lower end of the interface end plate assembly is fixed on the lower box assembly, and the upper end of the interface end plate assembly is solid
Due on the upper box assembly.
Optionally, the lower box assembly is connect by 10 fixed points that are spirally connected with vehicle lower body longitudinal floor beam solid
Fixed, the fixed point of front 2 is arranged on the longitudinal truss girder in left side and right side longitudinal direction truss girder, and the fixed point of two sides 8 is arranged in the
On one lateral bracket beam, the second lateral bracket beam, third lateral bracket beam and the 4th lateral bracket beam.
Optionally, each coldplate assembly includes coldplate, heat conductive pad and heat insulating mattress, wherein heat conductive pad and heat insulating mattress
It is bonded in the upper and lower surfaces of coldplate respectively；Water inlet pipe and drainpipe are provided on the coldplate；Coldplate is total
It is connected between by coldplate connecting tube, coldplate connecting tube is fixed on water inlet pipe and the draining of coldplate by water pipe clip
Guan Shang.
Optionally, battery interface end plate assembly is by interface end plate, admitting pipe joint, titting water outlet and suspension group
At, by suspension be fixed on lower box assembly.
Optionally, the power battery of pure electric automobile assembly structure further includes low voltage wiring harness, battery controller, high pressure
Block terminal and electricity piece support plate；Electricity piece support plate, high voltage distribution box and battery are arranged above preceding two rows of battery cells
Controller is fixed in electricity piece support plate, high voltage distribution box rear end by the high pressure of high pressure copper bar and battery module always just and always
Negative terminal connection, front end are connect by high pressure copper bar with battery assembly High voltage output connector；Battery mould is connected by low voltage wiring harness
Block and battery controller.
Optionally, the battery controller uses distributed frame, and control daughter board is individually integrated into each battery cell,
Control mainboard is arranged in outside battery cell.
Optionally, the high voltage distribution box is arranged in above battery cell along the Y-direction perpendicular to vehicle X-direction, and
Positioned at the longitudinally middle position of the lower box assembly.
Optionally, every row's battery cell along vehicle X-direction 55~90mm of interval distance, every row's battery cell along perpendicular to
The distance of 4~5mm is spaced between the Y-direction of X-direction.
Optionally, the upper box assembly includes upper box and sealing vent valve, is offered on the upper box ventilative
Hole is provided with sealing vent valve in the air hole.
The invention has the following beneficial effects: power battery of pure electric automobile assembly structures of the invention to be arranged in vehicle vehicle
Below body floor, the arrangement of assembly heel row bilayer cells module is taken full advantage of in vehicle Z-direction under traditional vehicle back seat
The space of side, does not influence the sitting comfort of member in cabin, while meeting the requirement of vehicle road clearance.Lower box assembly is held
The total integral weight of battery has been carried, has been directly connected to by high-intensitive welding support construction with vehicle stringer, ensure that battery
Stability.
Detailed description of the invention
Fig. 1 is the perspective view of the explosion of power battery of pure electric automobile assembly structure of the invention；
Fig. 2 is the schematic diagram of internal structure of power battery of pure electric automobile assembly structure of the invention；
Fig. 3 and Fig. 4 is the vehicle fixed structure schematic diagram of power battery of pure electric automobile assembly structure of the invention；
Fig. 5 and Fig. 6 is heat management system structure schematic diagram of the invention.
Fig. 7 is battery module arrangement schematic diagram of the invention.
Fig. 8 is interface end plate assembly structure schematic diagram of the invention.
Fig. 9 is upper box assembly diagram of the invention.
Figure 10 is box sealing schematic diagram of the invention.
Figure 11 is second embodiment of the present invention structural schematic diagram.
Specific embodiment
Technical solution of the present invention is further elaborated below with reference to examples and drawings.
Embodiment 1
A kind of pure electric automobile power assembly structure is present embodiments provided, especially a kind of pure electric vehicle passenger car power electric
Pond assembly structure, including upper box assembly 1, battery module 2, module support deck 3, support plate fixed bracket 4, battery thermal management system
System 5, lower box assembly 6, high pressure copper bar 7, interface end plate assembly 8, box sealing pad 9, low voltage wiring harness 10 (such as Fig. 2), battery control
Device 11 (such as Fig. 2), high voltage distribution box 12 (such as Fig. 2) and electricity piece support plate 13 (such as Fig. 2) processed.
The lowest level of the pure electric vehicle passenger car power battery assembly structure is lower box assembly 6, the lower box assembly 6
It is connected and fixed by 10 fixed points that are spirally connected with vehicle lower body longitudinal floor beam, as shown in Figure 3 and Figure 4, the fixed point of front 2
It is arranged on the longitudinal truss girder 601 in left side and right side longitudinal direction truss girder 602, the fixed point of two sides 8 is arranged in the first lateral bracket
On beam 603, the second lateral bracket beam 604, third lateral bracket beam 605 and the 4th lateral bracket beam 606；In the present embodiment,
The first lateral bracket beam 603, the second lateral bracket beam 604 and third lateral bracket beam 605 can be arranged in parallel, and described
Depending on four lateral bracket beams 606 are designed according to the tail portion of vehicle, generally in bending.
As shown in Figure 5 and Figure 6, battery thermal management system 5 is by the first coldplate assembly 501, the second coldplate assembly
502, third coldplate assembly 503 and the 4th coldplate assembly 504 composition, each coldplate assembly includes heat conductive pad
5011, coldplate 5012 and heat insulating mattress 5013；Wherein, heat conductive pad 5011 and heat insulating mattress 5013 are bonded in coldplate 5012 respectively
Upper and lower surfaces on, convenient for heat between battery module and coldplate directly quickly transmitting, by below coldplate
It arranges heat insulating mattress, reduces the thermal loss of battery module.Water inlet pipe and drainpipe are provided on the coldplate 5012；Coldplate
It is connected between assembly by coldplate connecting tube 505, coldplate connecting tube 505 is fixed on coldplate 5012 by water pipe clip
On water inlet pipe and drainpipe.The battery thermal management system arranges temperature sensor in water inlet, using the stream of Two In and One Out
Road design, with reference to Fig. 6, four pipe interfaces positioned at left and right ends are water inlet, and being located in the middle two pipeline structures is
The mouth of a river, each enter water flow passage and match an outlet passage, and water passage surface flow velocity is moderate, and the assignment of traffic of two sides water inlet is uniform,
Substantially 50% or so, the temperature difference between power battery monomer is effectively reduced.
The first coldplate assembly 501, the second coldplate assembly 502 and third coldplate assembly 503 pass through nut
Fitting is fixed on above lower box assembly 6, and the 4th coldplate assembly 504 is fixed on module support deck 3 by nut fitting
On, the module support deck 3 is fixed on the lower box assembly by the fixed bracket 4 of support plate.
As shown in figure 8, the interface end plate assembly 8 is by interface end plate 801 and suspension 804, the connector end plate passes through
Suspension 804 is fixed on lower box assembly (with reference to Figure 11), and the interface end plate is located at upper box assembly left end institute
In the opening of formation.
The admitting pipe joint 802 and titting water outlet 803 are fixed on the interface end plate, and make the water inlet pipe
Interface and titting water outlet pass through piping connection in the inlet and outlet of the battery thermal management system, the present embodiment respectively
In, the components such as battery assembly High voltage output connector can also be fixed on the interface end plate.
The battery module 2 includes the battery cell of three rows, and the battery cell in each row's battery cell is along vehicle X-direction
It arranges (width direction of vehicle), two rows battery cell single layer arrangement in front end is each attached on lower box assembly 6, third row's electricity
Pond monomer is rebuilding, and wherein lower layer's battery cell of third row is fixed on lower box assembly 6, the upper layer battery of third row
Monomer is fixed on module support deck 3；It is cascaded between each battery cell by high pressure copper bar 7, so that entire battery mould
Block distribution of weight is uniform, and whole center of gravity is in battery module fixed point support range；Preferably, each row's battery cell includes 7
The identical battery cell of a size, the battery cell code requirement standard size (length × width × height: 355mm × 151mm ×
109mm), the lower part of all battery cells is contacted with the heat conductive pad of battery thermal management system, and in cooling procedure, heat is by leading
Heat pad is transmitted to coldplate by battery cell, and in heating process, heat is transmitted on battery cell by heat conductive pad by coldplate.
Electricity piece support plate 13 is arranged above preceding two rows of battery cells, high voltage distribution box 12 and battery controller 11 are solid
It is scheduled in electricity piece support plate 13,12 rear end of high voltage distribution box is always just and total negative by the high pressure of high pressure copper bar 7 and battery module 2
End connection, front end are connect by high pressure copper bar 7 with battery assembly High voltage output connector；The high voltage distribution box 12 passes through low pressure
Harness 10 connects battery controller 11, so that the high voltage distribution box can read battery temperature and electricity in battery controller
The information such as amount, thus when battery overheat, the output of the high-voltage relay of cutoff high block terminal, i.e. cutoff high.
Arrange that box sealing pad 9, upper box assembly 1 are fixed on nowel between the upper box assembly 1 and lower box assembly 6
On body 6, while gasket 9 being compressed, realizes the sealing of battery assembly.
As shown in Figure 3 and Figure 4, power battery of pure electric automobile assembly structure is arranged in below vehicle lower body floor,
The arrangement of battery heel row bilayer cells monomer takes full advantage of the space below traditional vehicle back seat.Lower box assembly 6 carries
The total integral weight of battery, is fixed on vehicle longitudinal floor beam by high-intensitive welding support construction, so that entire electricity
Pond assembly is directly connected to lower body, ensure that battery stability.Welding support construction, (first is horizontal by four lateral bracket beams
To truss girder 603, the second lateral bracket beam 604, third lateral bracket beam 605 and the 4th lateral bracket beam 606) and two it is vertical
To truss girder (left side longitudinal direction truss girder and right side longitudinal direction truss girder) welding form, with lower box 610 by welding and it is Nian Jie
Mode connects together；The section of each lateral bracket beam and longitudinal truss girder and vehicle connection structure is " mouth " font, is protected
It is secured to demonstrate,prove fixed structure.
The battery controller 11 uses distributed frame, and control daughter board is individually integrated into each battery cell 2, controls
Mainboard is arranged in outside battery cell, saves battery assembly space；As shown in Figure 1, high voltage distribution box 12 is along perpendicular to the vehicle side X
To Y-direction be arranged in above battery cell, and be located at the longitudinally middle position of the lower box assembly, take full advantage of whole
The space in channel in vehicle.
As shown in Fig. 2, distance of every row's battery cell along vehicle X-direction 55~90mm of interval, is coldplate connecting tube
505, the arrangement of high pressure copper bar 7 and low voltage wiring harness 10 provides suitable space, and every row's battery cell is along the Y perpendicular to X-direction
Also it is spaced the distance of 4~5mm between direction, meets the space requirement of battery module assembly, battery cell aging expansion.
The battery controller and high voltage distribution box is arranged apart with battery module, is arranged so and convenient for low pressure
The arrangement of harness, high pressure copper bar also reduces the influence that the heat that battery module generates generates electricity piece.
As shown in figure 9, upper box assembly 1 includes upper box 101 and sealing vent valve 102, opened on the upper box 101
Equipped with air hole, be provided in the air hole sealing vent valve 102, battery assembly in the long-term use, due to the external world
The variation of the factors such as temperature, height above sea level, it may appear that battery internal and external pressure difference, sealing vent valve 102 can guarantee battery assembly structure
Inside and outside air pressure balance；Furthermore for battery in the case where there is failing generation bulk gas, sealing vent valve 102 can also be timely
Pressure release guarantees the safety of battery structure.
As shown in Figure 10, arrange that box sealing pad 9, upper box assembly 1 are solid between upper box assembly 1 and lower box assembly 6
It is scheduled on lower box assembly 6, while gasket 9 being compressed, so that the compression deformation of gasket 9 reaches 20%~30%.By
In the elasticity and metamorphosis of gasket 9, it is close on the fitting surface of upper box assembly 1 and lower box assembly 6, dust, hydrone
The sealing grade of battery assembly IP67 is realized in impermeable entrance.
Embodiment 2
As shown in figure 11, a kind of power battery of pure electric automobile assembly structure is present embodiments provided, with embodiment 1
It is not both to eliminate second row battery module, battery controller 11 and high voltage distribution box 12 is arranged in two parts battery module
Between, guarantee that battery assembly distribution of weight is uniform, whole center of gravity is in the center of structure.
Meanwhile in organization plan layout design, upper box assembly 1 is arranged according to vehicle body floor structure and inside battery
Situation carries out adaptation design, and 1 global shape of upper box assembly is designed as middle part concave station, makes vehicle floor without large-scale
Change, can have human engineering identical with conventional internal combustion rolling stock, upper box front and rear portions are designed as boss, meet battery
The space requirement of module arrangement.
The sequencing of above embodiments is not only for ease of description, represent the advantages or disadvantages of the embodiments.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of power battery of pure electric automobile assembly structure, which is characterized in that including upper box assembly, battery module, module
The fixed bracket of support plate, support plate, battery thermal management system, lower box assembly, high pressure copper bar, interface end plate assembly and cabinet are close
Packing；
The lower box assembly is connected and fixed with vehicle lower body longitudinal floor beam；
The battery thermal management system includes that the first coldplate assembly, the second coldplate be total, third coldplate assembly and the 4th
Coldplate assembly composition, the first coldplate assembly, the second coldplate assembly and the fitting of third coldplate assembly are fixed on
Above lower box assembly, the 4th coldplate assembly fitting is fixed on module support deck, and the module support deck passes through branch
The fixed bracket of fagging is fixed on the lower box assembly；
The battery module includes that three row's battery cells are set as along vehicle X-direction, front end two rows battery cell single layer arrangement,
It is fixed on lower box assembly, it is rebuilding that third, which arranges battery cell, and wherein lower layer's battery cell of third row is fixed on down
On cabinet assembly, the upper layer battery cell of third row is fixed on module support deck；Pass through high pressure copper bar between each battery cell
It is cascaded；
Arrange that box sealing pad, upper box assembly are fixed on lower box between the upper box assembly and lower box assembly, together
When gasket is compressed；
The lower end of the interface end plate assembly is fixed on the lower box assembly, and the upper end of the interface end plate assembly is fixed on
On the upper box assembly.
2. power battery of pure electric automobile assembly structure according to claim 1, which is characterized in that the lower box assembly
It is connected and fixed by 10 fixed points that are spirally connected with vehicle lower body longitudinal floor beam, it is longitudinal that the fixed point of front 2 is arranged in left side
On truss girder and right side longitudinal direction truss girder, the fixed point of two sides 8 is arranged in the first lateral bracket beam, the second lateral bracket beam,
On three lateral bracket beams and the 4th lateral bracket beam.
3. power battery of pure electric automobile assembly structure according to claim 1, which is characterized in that each coldplate assembly
It include coldplate, heat conductive pad and heat insulating mattress, wherein heat conductive pad and heat insulating mattress are bonded in the upper surface of coldplate under respectively
On surface；Water inlet pipe and drainpipe are provided on the coldplate；It is connected between coldplate assembly by coldplate connecting tube, it is cold
But plate connecting tube is fixed on the water inlet pipe and drainpipe of coldplate by water pipe clip.
4. power battery of pure electric automobile assembly structure according to claim 1, which is characterized in that battery interface end plate is total
It forms at by interface end plate, admitting pipe joint, titting water outlet and suspension, is fixed on lower box assembly by suspension.
5. power battery of pure electric automobile assembly structure according to claim 1, which is characterized in that further include low-voltage line
Beam, battery controller, high voltage distribution box and electricity piece support plate；Electricity piece support plate is arranged above preceding two rows of battery cells,
High voltage distribution box and battery controller are fixed in electricity piece support plate, and high voltage distribution box rear end passes through high pressure copper bar and battery
The high pressure of module is always just being connected with total negative terminal, and front end is connect by high pressure copper bar with battery assembly High voltage output connector；Pass through
Low voltage wiring harness connects battery module and battery controller.
6. power battery of pure electric automobile assembly structure according to claim 5, which is characterized in that the battery controller
Using distributed frame, controls daughter board and be individually integrated into each battery cell, control mainboard is arranged in outside battery cell.
7. power battery of pure electric automobile assembly structure according to claim 6, which is characterized in that the high voltage distribution box
It is arranged in above battery cell along the Y-direction perpendicular to vehicle X-direction, and is located at longitudinal interposition of the lower box assembly
It sets.
8. power battery of pure electric automobile assembly structure according to claim 1, which is characterized in that every row's battery cell edge
The distance of vehicle X-direction 55~90mm of interval, every row's battery cell is along perpendicular to 4~5mm of interval between the Y-direction of X-direction
Distance.
9. power battery of pure electric automobile assembly structure according to claim 1, which is characterized in that the upper box assembly
Including upper box and sealing vent valve, air hole is offered on the upper box, it is ventilative that sealing is provided in the air hole
Valve.
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| CN201811488353.5A CN109515216B (en) | 2018-12-06 | 2018-12-06 | Power battery assembly structure of pure electric vehicle |
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| CN109515216B CN109515216B (en) | 2024-02-27 |
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| CN110323516A (en) * | 2019-06-21 | 2019-10-11 | 宁波利维能储能***有限公司 | Battery pack heat-exchange system |
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