CN107039710A - The battery coolant circuit pad of electric vehicle - Google Patents
The battery coolant circuit pad of electric vehicle Download PDFInfo
- Publication number
- CN107039710A CN107039710A CN201611233309.0A CN201611233309A CN107039710A CN 107039710 A CN107039710 A CN 107039710A CN 201611233309 A CN201611233309 A CN 201611233309A CN 107039710 A CN107039710 A CN 107039710A
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- Prior art keywords
- heat conductive
- conductive pad
- row
- coolant circuit
- battery pack
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- 239000002826 coolant Substances 0.000 title claims abstract description 141
- 238000000034 method Methods 0.000 claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000004020 conductor Substances 0.000 claims description 2
- 239000002470 thermal conductor Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 239000007787 solid Substances 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- -1 nickel metal hydride Chemical class 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000005955 Ferric phosphate Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 229940032958 ferric phosphate Drugs 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 229910000399 iron(III) phosphate Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- H01M10/6555—Rods or plates arranged between the cells
-
- 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
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
A kind of battery pack of electric vehicle can include the multiple battery units for being arranged at least the first row and the second row.The first row can be parallel to the second row.Battery pack can also include coolant circuit, and wherein coolant circuit has at least one passage, and liquid can flow through at least one passage.Coolant hose can extend between the first row and the second row.Battery pack can additionally comprise heat conductive pad, and wherein heat conductive pad includes the first side and the second side.First side of heat conductive pad can be formed to match with coolant circuit, and the second side of heat conductive pad can be formed to match with the bent portion of the first row.The battery pack and its manufacture method ensure reliable electrical connection between each battery unit, efficiently cooling battery pack and help to be assembled into thousands of single battery units into the modular battery group that can be installed and replace when necessary.
Description
The cross reference of related application
Present patent application is the " cell package and insert-molded of electric vehicle entitled filed in 30 days December in 2015
No. 62/272,712 of (BATTERY PACKAGING AND INSERT MOLDING FOR ELECTRIC VEHICLES) "
The non-provisional application of U.S. Patent application simultaneously advocates its priority, wherein the 62/272nd, No. 712 U.S. Patent application with it is following common
It is related with the patent application transferred the possession of.Each of these applications is incorporated herein by reference：
" the cell package and insert-molded (BATTERY of electric vehicle entitled filed in 30 days December in 2015
PACKAGING AND INSERT MOLDING FOR ELECTRIC VEHICLES) " No. 62/272,711 United States Patent (USP)
Application.
" integrated bus and the battery connection of electric vehicle battery group entitled filed in 30 days December in 2015
(INTEGRATED BUSBAR AND BATTERY CONNECTION FOR ELECTRIC VEHICLE BATTERY
PACKS No. 62/272,713 U.S. Patent application) ".
" intelligent charging system (the SMART CHARGING of electric vehicle battery group entitled filed in 30 days December in 2015
SYSTEM FOR ELECTRIC VEHICLE BATTERY PACKS) " No. 62/272,714 U.S. Patent application.
Technical field
The application is related to a kind of battery pack, especially a kind of battery pack for electric vehicle.
Background technology
Electric vehicle uses one or more motor that the electric energy stored in rechargeable battery is powered.Lithium
Base battery is generally chosen because of its high power and energy density.Worked efficiently and safely in order to ensure electric vehicle, electricity
The temperature of pond group must be maintained in defined optimum temperature range.The coolant system of electric vehicle can physically extend into electricity
Pond group extends the service life of battery pack and extends the distance for the wheeled that once charges to remove excessive heat.
As electric vehicle becomes increasingly popular, the efficiency of manufacturing process will become more important.Improving the reliability of battery pack
The process and device that the manufacturing cost of battery pack is reduced while with security will be the key points that meet consumer demand.Tool
, it is necessary to such process and device for body：They ensure reliable electrical connection between each battery unit, efficiently cool down electricity
Pond group and help to be assembled into thousands of single battery units into the system for the modular battery group that can be installed and replace when necessary
Make process.
The content of the invention
In certain embodiments, a kind of battery pack of electric vehicle can be comprising being arranged to many of at least the first row and the second row
Individual battery unit.The first row can be parallel to the second row.Battery pack can also include coolant circuit, and wherein coolant circuit has liquid
At least one passage that body can be flowed therethrough.Coolant hose can extend between the first row and the second row.Battery pack can be wrapped in addition
Containing heat conductive pad, wherein heat conductive pad includes the first side and the second side.First side of heat conductive pad can be formed and coolant circuit phase
It coincide, and the second side of heat conductive pad can be formed to match with the bent portion of the first row.
In certain embodiments, a kind of method for the battery pack for manufacturing electric vehicle, which can be included, arranges multiple battery units
Into at least the first row and the second row.The first row can be parallel to the second row.Methods described can also include and be placed on coolant circuit
Between the first row and the second row.At least one passage that coolant circuit be able to can be flowed therethrough comprising liquid.Methods described can be another
Heat conductive pad is placed between coolant circuit and the first row by outer include.Heat conductive pad can include the first side and the second side.Heat conductive pad
The first side can be formed to match with coolant circuit, and heat conductive pad the second side can be formed it is curved with the first row
Bent portions match.
In various embodiments, it can be included by any combinations and without restriction one or more in following characteristics.
Battery pack can also include the second heat conductive pad, and the second heat conductive pad includes the first side and the second side, wherein the first side of the second heat conductive pad
It can be formed to match with coolant circuit, and the second side of the second heat conductive pad can be formed the bending section with the second row
Split-phase is coincide.Methods described can also be included and is wrapped in coolant circuit in the heat insulating belt of covering coolant circuit.Heat conductive pad
First side can be generally flat.Second side of heat conductive pad can include multiple semi-circular cut-outs.The radius of semi-circular cut-out can
It is substantially the same with the radius of each battery unit in multiple battery units.Single battery unit in multiple battery units can
Coordinate with the single semi-circular cut-out in multiple semi-circular cut-outs of heat conductive pad.Heat conductive pad may include thermal conductor material.The side
Method can also include application molding inserts, wherein molding inserts surrounds multiple units and coolant circuit so that multiple units and
Coolant circuit is fixed relative to each other.Multiple battery units can be also arranged to the third line, and it is adjacent to the first row, cooling
Agent loop is flexible to be adjacent to the first row and be adjacent to the third line, heat conductive pad may be inserted into coolant circuit and the first row it
Between, and heat conductive pad may be inserted between coolant circuit and the third line.
Brief description of the drawings
It can refer to the remainder and accompanying drawing of this specification to further understand the property and advantage of the present invention, wherein identical
Reference is used to represent similar assembly in some accompanying drawings.In some cases, sub- mark is associated with reference with table
Show one in multiple similar assemblies.When mark is without being specifically designated existing sub- mark referring to the drawings, it is desirable to represent all
These multiple similar assemblies.
Fig. 1 illustrates the simplification figure of the electric vehicle with cell system capable of recharging according to some embodiments.
Fig. 2 illustrates the lithium-base battery that can be used in electric vehicle according to some embodiments.
Fig. 3 illustrates the battery pack with coolant circuit according to some embodiments.
Fig. 4 diagrams are arranged on the top view of the coolant circuit between the two neighbouring rows of battery unit, wherein cooling agent
Loop has the pad matched with battery unit.
Coolant circuit of Fig. 5 diagrams with heat conductive pad, wherein heat conductive pad is formed to match with battery unit.
Coolant circuit of Fig. 6 diagrams with heat conductive pad, wherein coolant circuit is formed to be wrapped in battery unit
Around adjacent row.
Coolant circuit of Fig. 7 A diagrams with heat conductive pad, wherein heat conductive pad is wrapped in around the adjacent row of battery unit.
Fig. 7 B illustrate the process that coolant circuit is wound with heat conductive pad according to some embodiments.
Fig. 8 illustrates the battery pack with molding inserts completely according to some embodiments.
Fig. 9 illustrates the battery pack with molding inserts according to some embodiments.
Figure 10 illustrates the flow chart of the method for battery pack of the manufacture with heat conductive pad according to some embodiments.
Embodiment
Described herein for the embodiment for the device that heat conductive pad is applied to battery pack.Multiple battery units can with it is integrated
Coolant circuit be arranged as modular battery group together., also can be by order to which each battery unit is fixed in appropriate location
Molding inserts is applied to injection-molded process.In order to simplify manufacturing process and by the length of the coolant circuit needed for each battery pack
Degree is minimized, and embodiment as described herein also sets heat conductive pad between coolant circuit and each battery unit.Heat conductive pad
It may include compressible, elastic and/or heat conduction material.Heat conductive pad can be formed on side and coolant circuit kissing
Close, and be formed to match with the bent portion of each battery unit on another side.
Fig. 1 illustrates the simplification figure of the electric vehicle 102 with cell system capable of recharging 104 according to some embodiments
100.Cell system capable of recharging 104 may include one or more battery packs 106.Battery pack may include multiple single battery lists
Member, wherein the multiple single battery unit is electrically connected specific voltage/electric current being supplied to electric vehicle 102.Depend on
Embodiment, electric vehicle 102 can include using the work of both fuel combustion and stored power motor vehicle driven by mixed power and
The all-electric vehicle worked completely using stored power.
Cell system capable of recharging 104 represents the major part of electric vehicle 102 in terms of size, weight and cost.Greatly
Amount makes great efforts to put into the design and shape of cell system capable of recharging 104, so as in the peace for the passenger for ensuring electric vehicle 102
The amount in the space used in electric vehicle 102 is minimized while complete.In some electric vehicles, rechargeable battery
System 104 is located under the bottom plate of passenger carriage, as depicted in fig. 1.In other electric vehicles, cell system capable of recharging 104
It can be located in the luggage compartment of electric vehicle or engine cover area.
Although the larger battery unit of lesser amt can relatively have energy efficiency, these sizes and cost compared with big battery
Make us hanging back.In addition, needing more continuous space segment in electric vehicle 102 compared with big battery.This obstruction will be deposited compared with big battery
Storage is in position the bottom plate such as passenger carriage as depicted in fig. 1.Therefore, some embodiments use a large amount of smaller batteries lists
Member, the smaller batteries unit is coupled together producing the electrical characteristic equivalent to single larger unit.Small cell can be with
It is the size of such as tradition AA/AAA batteries, and can organizes into groups together to form multiple battery packs 106.Each battery pack can be wrapped
Containing a large amount of single battery units.In one embodiment, 700 independent lithium ion batteries are combined together to form single battery
Group 106a, and cell system capable of recharging 104 can comprising four battery packs 106 connected in parallel or series, eight battery packs,
Ten battery packs, 16 battery packs etc., untill meeting the electrical demands of electric vehicle 102.For single motor vehicle
For 102, the single battery unit included in each battery pack 106 can add up to thousands of.
Fig. 2 illustrates Figure 200 of the lithium-base battery 202 that can be used in electric vehicle according to some embodiments.Such as this paper institutes
Use, term " battery ", " unit " and " battery unit " is interchangeably used, to represent any class used in battery system
The single battery element of type.Battery as described herein generally comprises lithium-base battery, but can also include various chemical substances and configuration,
Comprising ferric phosphate, metal oxide, lithium ion polymer, nickel metal hydride, NI-G, nickel radical battery (hydrogen, zinc, cadmium etc.) and
Any other battery types compatible with electric vehicle.For example, some embodiments can be used6831
NCR18650 battery units or 18650 appearance and sizes in 6.5cm × 1.8cm and about 45g a certain modification.
Fig. 3 illustrates the top view 300 and isogonism of the battery pack 304 with coolant circuit 306 according to some embodiments
View 302.The battery pack 304 that Fig. 3 is described is that the actual battery group from electric vehicle is originally used for significantly simplifies.Individually
The quantity of battery unit and cell row has been greatly decreased, so as to simply and be explicitly described the present invention element.It should be understood that real
Border battery pack will include the more complicated route of more single battery units and coolant circuit 306.
Single battery unit in battery pack 304 is linearly arranged as a series of rows, each of which single battery unit
It is adjacent to another battery unit in the row.In certain embodiments, it there will be no between the single battery unit in single row
Obvious gap.In order to which the quantity of the single battery unit of per unit volume is maximized, the adjacent row of battery unit is with about one
The radius of single battery unit staggers.Adjacent row be then placed with the staggered positions that Fig. 3 is described mutually it is adjacent so that
Each single battery unit in the first row is adjacent to or contacted two single battery units in the second row.In some implementations
In example (not shown), three rows or more row is placed with mutually adjacent, and does not have obvious gap between being expert at.
Fig. 3 battery pack 304 includes the paired adjacent row separated by coolant circuit 306.Electric vehicle can be configured
Into pump liquid cooling agent by coolant circuit 306, so as to which heat is delivered into radiator or other heat exchanges from battery pack 304
System.Coolant circuit 306 can include one or more root coolant hose 308, and wherein liquid coolant can pass through coolant hose
308 and circulate.In certain embodiments, electric vehicle can use battery pack 304 dedicated coolant loop, and other embodiments
Using available engine coolant system.In certain embodiments, coolant circuit 306 is also coupled to heating system, with
So that when extreme weather causes environment temperature to be reduced to below the preferred operating temperature range of single battery unit battery pack 304
It can be heated.
Around the row for the single battery unit that coolant circuit 306 may be disposed in battery pack 304.Each battery pack can
Include the entrance and exit of coolant circuit 306.In certain embodiments, coolant circuit can be wrapped in single battery unit
Around paired row, to cause each battery unit to be adjacent at least a portion of coolant circuit.Before the disclosure, cooling
Agent loop is arranged between the two neighbouring rows of battery unit, and wherein coolant circuit is formed and battery unit kissing
Close.In this scheme, coolant circuit must be bent or shape until coolant circuit have with it is circular in every a line
Untill wavy profile or scalloped shaped section that the profile of single battery unit matches.The example of the coolant circuit of this type is retouched
It is painted in No. 8,541,127 United States Patent (USP).Although the scheme of this type is attempted the heat from battery unit to coolant circuit
Transmission is maximized, but causes some unnecessary costs to manufacturing process.Coolant circuit must shape before it can be mounted
Or bending, so as to extend manufacturing time.The scheme of this type also add the cooling agent that must be used each battery pack and return
The length on road.Because adding the length of coolant circuit, the pump that you must use more strength carrys out pumping coolant through more
Length.Further, it is necessary to using more cooling agents, and be allowed to travel across heat-exchange apparatus to cool down battery pack.
Fig. 4 diagrams are arranged on the top view of the coolant circuit between the two neighbouring rows of battery unit, wherein cooling agent
Loop has the pad matched with battery unit 402.Compared with prior art, the arrangement in Fig. 4 need not make cooling agent
Loop 406 shapes or bent.On the contrary, heat conductive pad 408 is placed on around coolant circuit 406, to cause coolant circuit 406
General straight can be maintained, and heat conductive pad 408 is matched by the shape and/or bent portion with battery unit 402 and will cooling
Agent loop 406 is thermally coupled to battery unit 402.
Coolant circuit 506 of Fig. 5 diagrams with heat conductive pad 510, wherein heat conductive pad 510 is formed and battery unit phase
It coincide.In this embodiment, coolant circuit 506 is allowed to keep straight, and coolant circuit 506 and single battery unit
Between hot interface formed by using heat conductive pad 510.Heat conductive pad may include the first side, wherein the first side is generally flat
And matched with the vertical section of coolant circuit 506.Epoxy resin, sticker, adhesive tape and/or class can be used in heat conductive pad 510
Coolant circuit 506 is adhered to like thing.In certain embodiments, heat conductive pad 510 can be manufactured by the form of sleeve pipe, wherein covering
Pipe is with the inner surface matched with the shape of coolant circuit 506.Coolant circuit 506 can be inserted into heat conductive pad 510,
To cause the inner surface of heat conductive pad 510 to be contacted with coolant circuit 506.Heat conductive pad 510 can be by with least some elastic characteristics
Material formed, thus make heat conductive pad 510 keep be in close contact with coolant circuit 506.
Heat conductive pad 510 can include the second surface relative with first surface.The second surface of heat conductive pad 510 or outer surface can
Include scalloped shaped section as depicted in figures 5.Scalloped shaped section can be formed by the continuous semi-circular cut-out of heat conductive pad 510.
During manufacture, heat conductive pad 510 can be molded into flat first side and the side of scalloped shaped second.Alternatively, heat conductive pad 510 can
Manufactured by general rectangular shape, and semi-circular cut-out can be removed from rectangular shape.Semi-circular cut-out can be formed
Matched with the bent portion of each single battery unit.For example, semi-circular cut-out can have substantially with it is described above independent
The similar radius of the radius of battery unit.
In certain embodiments, heat conductive pad 510 can be manufactured such that the general rectangular shape without semi-circular cut-out.
In these embodiments, heat conductive pad 510 can be made up of the compressible material of flexible characteristic.When coolant circuit 506 is mounted
When between the continuous row of single battery unit, heat conductive pad 510 can be squeezed between coolant circuit 510 and single battery unit
Pressure.Due to the elastic characteristic of heat conductive pad 510, heat conductive pad 510 will be by being applied between battery unit and coolant circuit 506
Extruding force and the bent portion on two surfaces and single battery unit with coolant circuit 506 match.
The top view 600 and isometric view 602 of coolant circuit 606 of Fig. 6 diagrams with heat conductive pad 610, wherein cooling down
Agent loop is formed to be wrapped in around the adjacent row of battery unit.In this embodiment, Fig. 5 heat conductive pad 510 and cooling agent
Loop 506 is described with case of bending, to cause both to be advanced through between the continuous row of single battery unit.Cooling agent
The section 612 (for example, on edge of battery pack) not contacted with single battery unit in loop 606 can be not provided with heat conductive pad
610.In the inside bending 614 of coolant circuit 606, as coolant circuit 606 surrounds the end of single battery cell row
Advance, heat conductive pad 610 can match with the bent portion of coolant circuit 606.For fabrication purposes, whole coolant circuit
606 can have the heat conductive pad 610 applied before the mounting.Coolant circuit 606 be advanced through battery unit independent row it
Afterwards, those parts that heat conductive pad 610 can be covered to the section 612 not contacted in coolant circuit 606 with single battery unit are moved
Remove.
Fig. 7 A illustrate the top view 700 and isogonism of the coolant circuit 706 with heat conductive pad 710 according to some embodiments
View 702.Be not need as shown in Figure 4 by the fold of coolant circuit 406 be waveform or scalloped shaped pattern so as to in battery pack
The bent portion of single battery unit match, but heat conductive pad 410 may be inserted into coolant circuit 406 and single battery list
Between member.Heat conductive pad can be formed by any Heat Conduction Material construction, and preform can be had and single battery unit on side
Scalloped shaped edge that bent portion matches and preform has straight edge to bond with coolant circuit 406 on another side.
As described above, the battery pack that Fig. 7 is described is simplified, so as to only have four row single battery units.This is merely to clear
Chu shows how heat conductive pad 710 and coolant circuit 707 can assemble to form battery pack with single battery unit.It should be understood that real
Battery pack in the electric vehicle of border will include hundreds of single battery units and several feet of coolant circuit.
Fig. 7 B illustrate the process 730 that coolant circuit is wound with heat conductive pad according to some embodiments.The process can begin
In coolant circuit or cooling tube.Heat insulating belt can be added to coolant circuit.Then heat-conducting plastic can be added to form heat conduction
Pad, and then whole assembly can be made to travel across battery unit.In certain embodiments, battery unit can be placed on to folder
In tool or injection mold to be held in position in, and then can make coolant circuit when battery unit is fixed
Assembly travels across battery unit.As described in other parts in the disclosure, then can will molding inserts be added to battery pack with
During each component of assembly is held in position.
Fig. 8 is illustrated to be regarded according to the top view 800 and isogonism of the battery pack with part molding inserts 812 of some embodiments
Figure 80 2.Applying solid is moulded for by these independent assemblies around coolant circuit and single battery unit in battery pack
It is transformed to can tolerate the solid state battery group for the critical conditions that lasting vehicle is used.Solid molding ensures that single battery unit is kept
In in position, and electrical connection is not interfered because of vibration and movement.Solid molding also forms modular unit, wherein mould
Block unit can be during the manufacturing process of cell system capable of recharging and the service life of electric vehicle easily by movement, peace
Dress and/or replacement.In an exemplary embodiment, 750 single battery units can be with one or more current loop groups
Close to form the battery pack being enclosed in solid molding.The part molding inserts 812 that Fig. 8 is described is because only around battery pack
Applications and be referred to as " part ".In certain embodiments, this, which can be enough to be formed, can reliably install and using in electricity
Solid state battery group in motor-car.This can also be such that pad and single battery unit exposes with so that they can be replaced when needed.
Fig. 9 illustrates the He of vertical view isometric view 900 with the battery pack of molding inserts 914 completely according to some embodiments
Look up isometric view 902.In this more typical embodiment, molding material described above can be injected into injection mold,
And be allowed to around any cavity between single battery unit and any component related to coolant circuit 906 and
Flowed among cavity.In certain embodiments, injection mold, which may include to have in a mold, allows coolant circuit 906 from molding
Cavity that inserts 914 is passed and any electricity for being connected battery pack with the remainder of cell system capable of recharging (not shown)
Sub- device or electrical connection.In this embodiment, molding inserts 914 completely is employed mould inserts 914 completely and independent
Flushed at the top of battery unit.In this embodiment, coolant circuit 906 and heat conductive pad is completely covered in molding inserts 914 completely.
However, molding inserts 914 completely does not cover the top of single battery unit or the bottom of single battery unit.On the contrary, individually electric
These regions of pool unit keep exposing, and are electrically connected with to be formed between each battery unit after application molding inserts
Connect.In other embodiments (not shown), molding inserts 716 does not extend to top and/or the bottom terminals of battery pack.No
Fig. 9 embodiment is same as, molding material is allowed to flow in the cavity between each battery unit and/or in coolant circuit
Flowed with heat conductive pad.However, injection mold is cast the cavity for single battery unit, to cause top terminal
A part and a part for bottom terminals keep exposing.In certain embodiments, the exposed portion of single battery unit can be between
Between 1mm and 15mm.The amount of exposing of each single battery unit is between the top section and base section of single battery unit
Can be with different.By exposing a part for single battery unit, can relatively easily it apply towards single battery unit
Some type of electrical connection.
Figure 10 illustrates the flow chart of the method for battery pack of the manufacture with heat conductive pad according to some embodiments.Methods described
It can include and multiple battery units are arranged at least the first row and the second row (1002).In certain embodiments, the first row can be put down
Row is in the second row.Each in each battery unit can have similar radii.Methods described can be included coolant circuit also
It is placed between the first row and the second row (1004).Coolant circuit can be from comprising liquid (for example, cooling agent, anti-icing fluid etc.)
In at least one passage that flows through.In certain embodiments, coolant circuit can include two or more passages.Passage can have
There are square, circular or rectangular cross section.Coolant circuit itself can have comprising straight parallel edge and rounded ends
Cross section.Coolant circuit can include heat insulating belt, and wherein heat insulating belt is wrapped in cooling agent before any heat conductive pad is employed and returned
Around road.Battery pack can be also comprising molding inserts, wherein molding inserts surrounds multiple units and coolant circuit, so as to obtain multiple
Unit and coolant circuit are fixed relative to each other.
Methods described can also include and be placed on heat conductive pad between coolant circuit and the first row of battery unit (1006).
In certain embodiments, the second heat conductive pad can be applied also between coolant circuit and the second row.Heat conductive pad, which can have, to be formed
For the first side matched with coolant circuit.First side can be generally flat.Heat conductive pad can also have be formed with
The second side that the bent portion of the first row matches.Second side can include multiple semi-circular cut-outs.It is each in semi-circular cut-out
The individual radius that there is the radius with single battery unit to be substantially the same (for example, difference is no more than 5mm).Heat conductive pad may include heat
Conductor.Heat conductive pad can be also made using the compressible material of flexible characteristic.
In certain embodiments, multiple battery units can be also arranged to the third line, its be adjacent to the first row and parallel to
The first row.Coolant circuit is flexible to be adjacent to the first row and be adjacent to the third line, and heat conductive pad may be inserted into cooling agent
Between loop and the first row and between coolant circuit and the third line.For example, Fig. 7 embodiment illustrates coolant circuit and led
How heat pad " can be wound " around two parallel and neighbouring rows of battery unit.
It will be appreciated that the specific steps illustrated in Figure 10 provide offer electric vehicle according to various embodiments of the present invention
The ad hoc approach of the heat conductive pad of battery pack.The step of other orders being performed always according to alternate embodiment.For example, the present invention
The step of alternate embodiment can perform above-outlined in different order.In addition, each step illustrated in Figure 10 can be included and can pressed
Many sub-steps that various orders suitable for independent step are performed.In addition, may depend on application-specific and add or removal volume
Outer step.Those skilled in the art will be appreciated that many changes, modifications and substitutions.
In being described above, for illustrative purposes, the numerous details of elaboration are various so as to the comprehensive understanding present invention's
Embodiment.However, will be apparent that for those skilled in the art, feelings of some that can be in the absence of these details
Embodiments of the invention are put into practice under condition.Under other circumstances, well known construction and device is shown in form of a block diagram.
Be described above and one exemplary embodiment be only provided, and be not intended to limitation the scope of the present disclosure, using or configuration.Phase
Instead, the one exemplary embodiment being described above will be provided for implementing fully retouching for one exemplary embodiment to those skilled in the art
State.It should be understood that the sheet that various changes are illustrated without departing from following claims can be carried out to the function and arrangement of all elements
The spirit and scope of invention.
Detail is given so as to comprehensive understanding embodiment in described above.However, those skilled in the art should
Understand, embodiment can be put into practice in the case of in the absence of these details.For example, circuit, system, network, process and other
Component can be shown as component by block diagram format, in order to avoid embodiment is become hard to understand with unnecessary details.In other situations
Under, well known circuit, process, algorithm, structure and technology can be shown, to avoid making without unnecessary detail
Embodiment becomes hard to understand.
Also, it should be noted that each embodiment can be described as process, the process is depicted as flow chart, flow chart, number
According to flow chart, structure chart or block diagram.Although flow chart can be described the operations as sequential process, many operations can concurrently or together
When perform.In addition, the order of operation can be rearranged.Process is terminated when its operation is completed, but can be had in figure not
Comprising additional step.Process may correspond to method, function, process, subroutine, subprogram etc..When a process corresponds to a function,
Its terminal may correspond to function and return to call function or principal function.
In description above, the aspect of the present invention, but this area are described with reference to the specific embodiment of the present invention
Technical staff should be understood that the invention is not restricted to this.Individually or the various features and aspect of foregoing invention can be used in combination with.
In addition, embodiment can be used in any amount of environment and application beyond environment as described herein and application, without departing from this
The wide spirit and scope of specification.Therefore, the specification and drawings are considered as illustrative and not restrictive.
Claims (22)
1. a kind of battery pack of electric vehicle, it is characterised in that the battery pack includes：
Multiple battery units, are arranged at least the first row and the second row, wherein the first row is parallel to second row；
Coolant circuit, including at least one passage, liquid can flow through at least one passage, and wherein coolant hose is described
Extend between the first row and second row；And
Heat conductive pad, including the first side and the second side, wherein first side of the heat conductive pad is formed and the cooling agent
Loop matches, and second side of the heat conductive pad is formed to match with the bent portion of the first row.
2. battery pack according to claim 1, wherein the heat conductive pad includes the first heat conductive pad, the battery pack also includes
Second heat conductive pad, second heat conductive pad includes the first side and the second side, wherein first side quilt of second heat conductive pad
Be formed as matching with the coolant circuit, and second side of second heat conductive pad is formed and described second
Capable bent portion matches.
3. battery pack according to claim 1, includes the heat insulating belt of the covering coolant circuit.
4. battery pack according to claim 1, wherein first side of the heat conductive pad is generally flat.
5. battery pack according to claim 1, wherein second side of the heat conductive pad includes multiple semi-circular cut-outs.
6. battery pack according to claim 5, wherein in the radius of the semi-circular cut-out and the multiple battery unit
The radius of each battery unit be substantially the same.
7. battery pack according to claim 5, wherein the single battery unit in the multiple battery unit is led with described
Single semi-circular cut-out in the multiple semi-circular cut-out of heat pad coordinates.
8. battery pack according to claim 1, wherein the heat conductive pad includes heat conductor.
9. battery pack according to claim 1, in addition to molding inserts, wherein the molding inserts surrounds the multiple list
First and described coolant circuit, to cause the multiple unit and the coolant circuit to fix relative to each other.
10. battery pack according to claim 1, wherein：
The multiple battery unit is also arranged to be adjacent to the third line of the first row；
The coolant circuit bends to be adjacent to the first row and be adjacent to described the third line；And
The heat conductive pad is inserted between the coolant circuit and the first row, and the heat conductive pad be inserted in it is described cold
But between agent loop and described the third line.
11. a kind of method for the battery pack for manufacturing electric vehicle, methods described includes：
Multiple battery units are arranged at least the first row and the second row, wherein the first row is parallel to second row；
Coolant circuit is placed between the first row and second row, wherein the coolant circuit includes at least one
Bar passage, liquid flows through at least one passage；And
Heat conductive pad is placed between the coolant circuit and the first row, wherein the heat conductive pad includes the first side and the
Two sides, wherein first side of the heat conductive pad is formed to match with the coolant circuit, and the heat conductive pad
Second side be formed to match with the bent portion of the first row.
12. method according to claim 11, wherein the heat conductive pad includes the first heat conductive pad, the battery pack also includes
Second heat conductive pad, second heat conductive pad includes the first side and the second side, wherein first side quilt of second heat conductive pad
Be formed as matching with the coolant circuit, and second side of second heat conductive pad is formed and described second
Capable bent portion matches.
13. method according to claim 11, in addition to the coolant circuit is wrapped in the covering cooling agent time
In the heat insulating belt on road.
14. method according to claim 11, wherein first side of the heat conductive pad is generally flat.
15. method according to claim 11, wherein second side of the heat conductive pad includes multiple semi-circular cut-outs.
16. method according to claim 15, wherein in the radius of the semi-circular cut-out and the multiple battery unit
The radius of each battery unit be substantially the same.
17. method according to claim 15, wherein the single battery unit in the multiple battery unit is led with described
Single semi-circular cut-out in the multiple semi-circular cut-out of heat pad coordinates.
18. method according to claim 11, wherein the heat conductive pad includes thermal conductor material.
19. method according to claim 11, in addition to application molding inserts, wherein the molding inserts surrounds described many
Individual unit and the coolant circuit, to cause the multiple unit and the coolant circuit to fix relative to each other.
20. method according to claim 11, wherein：
The multiple battery unit is also arranged to be adjacent to the third line of the first row；
The coolant circuit bends to be adjacent to the first row and be adjacent to described the third line；And
The heat conductive pad is inserted between the coolant circuit and the first row, and the heat conductive pad be inserted in it is described cold
But between agent loop and described the third line.
21. a kind of battery pack of electric vehicle, including any one of claim 1-10 technical characteristic or technical characteristic is any
Combination.
22. a kind of method for the battery pack for manufacturing electric vehicle, including any one of claim 11-20 technical characteristic or technology
Any combination of feature.
Applications Claiming Priority (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201562272711P | 2015-12-30 | 2015-12-30 | |
| US201562272714P | 2015-12-30 | 2015-12-30 | |
| US201562272712P | 2015-12-30 | 2015-12-30 | |
| US201562272713P | 2015-12-30 | 2015-12-30 | |
| US62/272,712 | 2015-12-30 | ||
| US62/272,711 | 2015-12-30 | ||
| US62/272,713 | 2015-12-30 | ||
| US62/272,714 | 2015-12-30 | ||
| US15/208,807 | 2016-07-13 | ||
| US15/208,807 US9865905B2 (en) | 2015-12-30 | 2016-07-13 | Battery coolant loop pad for electric vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107039710A true CN107039710A (en) | 2017-08-11 |
Family
ID=59409029
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621452849.3U Expired - Fee Related CN206379429U (en) | 2015-12-30 | 2016-12-28 | The battery pack of electric vehicle |
| CN201611233309.0A Pending CN107039710A (en) | 2015-12-30 | 2016-12-28 | The battery coolant circuit pad of electric vehicle |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621452849.3U Expired - Fee Related CN206379429U (en) | 2015-12-30 | 2016-12-28 | The battery pack of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN206379429U (en) |
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| CN108134158A (en) * | 2017-12-27 | 2018-06-08 | 深圳航美新材料科技有限公司 | A kind of thermal management assemblies and preparation method and application |
| CN108172732A (en) * | 2018-02-27 | 2018-06-15 | 华霆（合肥）动力技术有限公司 | Battery modules and battery system |
| CN108428927A (en) * | 2018-03-13 | 2018-08-21 | 孔瑞清 | Power battery, power battery temperature control method and new energy vehicle |
| CN108832222A (en) * | 2018-05-07 | 2018-11-16 | 浙江零跑科技有限公司 | A kind of integrated type battery packet cooling device |
| CN110048041A (en) * | 2018-01-16 | 2019-07-23 | 信越聚合物株式会社 | Heat-radiating structure and the battery for having it |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11437662B1 (en) * | 2021-07-23 | 2022-09-06 | Beta Air, Llc | Battery assembly for use in an electric aircraft |
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| CN206379429U (en) | 2017-08-04 |
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