WO2022074016A1 - Système de refroidissement - Google Patents
Système de refroidissement Download PDFInfo
- Publication number
- WO2022074016A1 WO2022074016A1 PCT/EP2021/077472 EP2021077472W WO2022074016A1 WO 2022074016 A1 WO2022074016 A1 WO 2022074016A1 EP 2021077472 W EP2021077472 W EP 2021077472W WO 2022074016 A1 WO2022074016 A1 WO 2022074016A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- battery
- cooling system
- thermal interface
- heat exchange
- Prior art date
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 124
- 239000012809 cooling fluid Substances 0.000 claims abstract description 13
- 239000012530 fluid Substances 0.000 description 11
- 230000001965 increasing effect Effects 0.000 description 8
- 230000003247 decreasing effect Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 239000002826 coolant Substances 0.000 description 4
- 239000003570 air Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 230000002123 temporal effect Effects 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
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
-
- 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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch 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
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
Definitions
- the invention relates to a cooling system.
- Patent US9979058 discloses the use of a thermal interface whose thickness is increased in certain areas in order to maximize the heat exchange capacity between the cooling system and the battery.
- this solution has the disadvantage of increasing the volume of the battery, due to the extra thickness of the thermal interface.
- the object of the invention is to provide a device and a method for thermal management of vehicle batteries remedying the above drawbacks and improving the thermal management devices and methods known from the prior art.
- the invention makes it possible to produce a device and a method which are simple and reliable and which promote a homogeneous distribution of the temperature in a battery without increasing the volume of said battery.
- the invention relates to a cooling system for a battery for an electric or hybrid vehicle, said cooling system comprising a cooling device and a thermal interface,
- the cooling device generating a movement of a cooling fluid between an entry point and an exit point in a cooling direction
- the thermal interface having a first surface at least substantially in contact with the cooling device and a second so-called heat exchange surface, opposite the first surface, intended to come into contact with or close to a battery, and
- the orthogonal projection of the heat exchange surface on a plane parallel to the first surface has substantially the shape of a funnel oriented along an axis parallel to the cooling direction.
- the contour of said funnel shape is defined by a 1/X mathematical law.
- the thermal interface is of constant thickness.
- the invention also relates to a power supply system for an electric or hybrid vehicle, comprising a battery and a cooling system according to the invention, the battery being in contact with or close to the exchange interface of the cooling system .
- the battery comprises several identical modules distributed according to the secondary direction
- the heat exchange surface of the cooling system comprises a set of unit surfaces having a longitudinal axis parallel to the cooling direction, at least one unit surface being arranged between each module and the cooling device.
- each module has a longitudinal axis of symmetry parallel to the cooling direction, and comprises a set of cells placed perpendicular to the longitudinal axis of symmetry and uniformly distributed along the longitudinal axis of symmetry, and
- the contact surface between a first cell and the at least one unitary surface is smaller than the contact surface between a second cell, located further downstream than the first cell, and the at least one unit area.
- all the unit surfaces of the thermal interface are identical.
- the invention also relates to an electric or hybrid vehicle equipped with an electrical power supply system according to the invention.
- the appended drawing shows, by way of example, one embodiment of a cooling system according to the invention.
- FIG. 1 Figure 1 schematically shows a motor vehicle equipped with a cooling system according to the invention.
- FIG. 2a shows one embodiment of a power supply system equipped with a cooling system in perspective view.
- FIG. 2b shows one embodiment of a power supply system equipped with a cooling system in cross section.
- FIG. 3 shows a first embodiment of a power supply system equipped with a cooling system according to the invention.
- Figure 4 shows a second embodiment of a power supply system equipped with a cooling system according to the invention.
- FIG. 5 shows a third embodiment of a power supply system equipped with a cooling system according to the invention.
- Figure 6 compares the evolution over time of the minimum and maximum temperatures of the cells of a battery equipped with a cooling system with and without implementation of the invention.
- the vehicle 10 is an electric or hybrid motor vehicle of any type which can be, for example, a private vehicle, a utility vehicle, a truck or a bus.
- the vehicle 10 is equipped with a power supply system 3.
- the power supply system 3 comprises an electric battery 2 and a cooling system 1 .
- the electric battery 2 can be an electric battery of any type.
- the electric battery can be a lithium battery using Li-ion technology.
- the electric battery may be an all solid lithium battery.
- the battery 2 comprises a set of modules 21, as shown in Figures 2a and 2b, each module grouping together a plurality of battery cells 22 assembled in series or in parallel, as can be seen in Figures 4 to 6.
- the cells comprise an assembly of electrodes implementing, for example, Li-ion technology or lithium metal technology.
- the vehicle 10 is equipped with a cooling system 1 according to the invention.
- the cooling system 1 comprises a thermal interface 11 and a cooling device 12.
- the cooling device 12 may comprise a structure implementing a fluid displacement circuit between an entry point 121 and an exit point 122, as represented in FIG. 3.
- the cooling device 12 can be passive, in other words boil down to the substantially linear displacement of the ambient air between an entry point and an exit point of the cooling device, the displacement of the air being generated by the movement of the vehicle carrying the cooling device.
- the direction of air movement corresponds to the longitudinal axis of the vehicle equipped with the cooling device.
- cooling device 12 can be implemented, in particular devices using the displacement of liquids (such as, for example, water, glycol water, refrigerant or even dielectric fluids). These so-called active devices require the materialization of a circuit by a pipe and the use of a pump to generate the movement of the liquid in the pipe.
- liquids such as, for example, water, glycol water, refrigerant or even dielectric fluids.
- the implementation of the heat exchange between the battery and the cooling fluid induces a progressive heating of the fluid as it is displacement in the cooling device 12.
- cooling direction 13 For any cooling device implementing a given cooling circuit, it is therefore possible to define a so-called cooling direction 13, or main cooling direction 13.
- the cooling direction 13 can be defined as an oriented straight line connecting the point of entry of the fluid into the cooling circuit to the point of exit of the fluid from the cooling circuit. It globally represents the direction of movement of the fluid in the cooling device 12.
- the cooling direction 13 may correspond to the longitudinal axis of the motor vehicle 10.
- the shape of the cooling circuit may vary depending on the cooling system.
- the cooling direction 13 can be defined as an oriented axis materializing the main temperature gradient measured in the cooling fluid.
- the cooling system 1 also comprises a thermal interface 11 whose function is to promote the transfer of heat from the battery 2 to the cooling device 12.
- the thermal interface 11 can be made of different thermally conductive materials, including solid materials (for example pads), pasty (for example silicone), woolly, or even composite materials. These different materials are characterized by their thermal conductivity, i.e. the amount of heat that can be transferred in the material in a given time.
- the thermal interface 11 can be maintained under pressure between the cooling device 12 and the battery 2, in particular to expel air bubbles which could harm thermal conduction between these two elements.
- the thermal interface can be of variable thickness in one or more directions. Preferably, the thermal interface is of constant thickness.
- the thermal interface 11 presents:
- An increase in the transverse dimension of the heat exchange surface according to the cooling direction can be established according to different criteria.
- the transverse dimension of the heat exchange surface increases strictly along the cooling direction 13.
- the first dimension is strictly greater than the second dimension if and only if the point A is located strictly downstream of the point B according to the cooling direction.
- the transverse dimension of the heat exchange surface increases globally along the cooling direction.
- certain so-called decreasing segments of the heat exchange surface may have a local reduction in the transverse dimension of the heat exchange surface in the cooling direction.
- the decreasing segments represent a limited proportion of the heat exchange surface.
- a limitation can relate to the ratio between the surface of the decreasing segments and the total surface of the interface thermal.
- the ratio between the area of the decreasing segments and the total area of the thermal interface may be less than 20%, or 10%, or even 5%.
- a limitation may relate to the cumulative dimension of these segments according to their projection onto the cooling direction.
- the sum of the lengths of the decreasing segments is less than a percentage of the total length of the heat exchange surface along the cooling direction, said decreasing segment lengths being measured along the cooling direction. This percentage can be set at a maximum value of 20%, or 10%, or even 5%.
- the cooling system 1 is in contact with or close to a battery 2 comprising a set of identical battery modules 21. These modules are distributed uniformly along a secondary direction 14, perpendicular to the cooling direction 13 of the cooling system.
- Each of these modules has a longitudinal axis along the cooling direction 13. It further comprises a set of identical battery cells 22, placed perpendicular to the longitudinal axis of the module 21 and uniformly distributed along this longitudinal axis. In other words, the battery cells are arranged perpendicular to the cooling direction and uniformly distributed along this cooling axis.
- the heat exchange surface 112 consists of at least one unitary surface 113 per battery module.
- unit area refers to each element monobloc of the heat exchange surface 112, that is to say each subset of the heat exchange surface 112 having a continuous heat exchange surface.
- all the unit surfaces are identical, regardless of the battery module with which they are associated. In alternative embodiments not described, the unit surfaces could vary according to the module with which they are associated and/or within a group of unit surfaces associated with the same module.
- a single module 21 of battery 2 is shown.
- the battery 2 can nevertheless contain one or more modules, for example 20 modules.
- FIG. 3 A first embodiment of a heat exchange interface 11 according to the invention is described in figure 3.
- a single unit surface 113 is placed in contact with the cells 22 of the module.
- the unitary surface 113 is substantially in the shape of a funnel oriented along the cooling direction, the narrowest part of the funnel being located in the upstream part of the direction of circulation of the cooling fluid.
- the contour of the funnel shape is defined by a mathematical law in 1/X.
- the contour of the unitary surface 113 can take a completely different form.
- the contact surface between a cell 22 of a battery module and the unitary surface 113 associated with the module varies according to the position of the cell along the longitudinal axis of the module.
- the contact surface increases according to the direction of cooling. In other words, the closer a battery cell is to the coolant inlet, the more its contact surface with the thermal interface is reduced. Conversely, the closer a cell is to the coolant outlet, the greater its contact surface with the thermal interface.
- the contact surface between a first cell and the unit surface 113 is smaller than the contact surface between a second cell, located further downstream than the first cell, and the unit surface 113.
- the heat exchange surface 112 when considering the assembly of the battery and of the cooling system, the heat exchange surface 112 consists of a set of unit surfaces 113 which are identical to each other and in the shape of a funnel, each unit surface being associated with a module of the battery 2.
- the thermal resistance of the thermal interface 11 is determined by the following formula:
- Rth (x) Eit/[Cth*S(x)] where:
- - S(x) is the contact surface between the thermal interface and the at least one battery cell located at the abscissa x on an axis defined according to the cooling direction.
- the thermal interface 11 therefore has a decreasing thermal resistance Rth along the cooling direction.
- the decrease in the thermal resistance Rth along the cooling direction makes it possible to improve the homogeneity of the heat exchanges between the battery 2 and the cooling system 1 .
- the increase in the temperature of the cooling fluid along the cooling direction is advantageously compensated by the reduction in the thermal resistance along this same direction.
- Heat exchanges being more homogeneous according to the direction of cooling, the temperature of the cells of the battery is more homogeneous on the whole of the battery, in particular according to the direction of cooling.
- Figure 6 illustrates the effect of implementing the invention according to the first embodiment.
- a first battery equipped with a cooling system comprising a thermal interface 11 according to the first embodiment of the invention
- a second battery identical to the first equipped with a cooling system comprising a thermal interface whose contact surface with the battery cells is uniform, in particular the contact surface between the thermal interface and the battery cells S(x) is constant along the cooling direction.
- the measurements described below are carried out under similar conditions of use of the two vehicles.
- the evolution over time of the minimum and maximum temperatures of the cells of the first battery equipping the first vehicle and of the second battery equipping the second vehicle is compared:
- the ordinate axis 150 represents the temperature in degrees Celsius
- the curve 101 represents the evolution of the maximum temperatures of the battery cells without implementation of the invention (the measurements are carried out on the second battery),
- the curve 102 represents the evolution of the maximum temperatures of the battery cells with implementation of the invention (the measurements are carried out on the first battery),
- the curve 103 represents the evolution of the minimum temperature of the battery cells without implementation of the invention (the measurements are carried out on the second battery),
- the curve 104 represents the evolution of the minimum temperature of the battery cells with implementation of the invention (the measurements are carried out on the first battery).
- Figure 6 shows that the curves 102 and 104 - representing the temporal evolution of the maximum and minimum temperatures of the cells of the first battery - are very close to each other and are located between the curves 101 and 103, representing these same data measured on the second battery.
- the maximum temperature measured on the cells of the first battery is significantly lower than the maximum temperature measured on the cells of the second battery
- the minimum temperature measured on the cells of the first battery is significantly higher than the minimum temperature measured on the cells of the second battery.
- FIGS. 4 and 5 Alternative embodiments of a heat exchange interface 112 are shown in Figures 4 and 5.
- a single module 21 of battery 2 is shown.
- the battery 2 can nevertheless contain one or more modules.
- FIG. 4 represents a battery module with which two unit surfaces 113 are associated
- FIG. 5 represents a battery module with which three unit surfaces are associated 113
- the unit surfaces 113 are substantially in the shape of a funnel oriented along the cooling direction, the narrowest part of the funnel being located in the upstream part of the direction of circulation of the cooling fluid.
- the contour of the funnel shape is defined by a mathematical law in 1/X.
- the outline of the unit surfaces 113 can take any other form, which can optionally vary from one unit surface to another.
- the unit surfaces 113 are uniformly distributed along the secondary direction 14, perpendicular to the cooling direction 13 of the cooling system.
- two unitary surfaces 113 are in contact with each of the cells of the battery module.
- three unit surfaces 113 are in contact with each of the cells of the battery module.
- the embodiments associating several unit surfaces 113 with each module can make it possible to homogenize the temperature of the cells along the secondary direction 14.
- this embodiment makes it possible to limit the temperature differences inside the same cell between the areas of the cell in contact with the thermal interface and those which are not.
- the embodiments presented relate to battery cooling systems for electric or hybrid vehicles whose geometry is generally simple. More generally, the invention can be applied to any thermal management system having a thermal interface 11 intended to be in contact with or close to a user system 2.
- the invention consists in defining a heat exchange surface 112 allowing to standardize the action of the thermal management system 1 on the user system 2.
- heat exchange surface 112 may be necessary to define the heat exchange surface 112 between the thermal interface 11 and the user system 2.
- shape of the heat exchange surface 112 could be calculated using simulation tools, in particular three-dimensional.
- the definition of the shape of the thermal interface 11 in particular of the heat exchange surface 112, can take into account the physical properties of the material constituting the thermal interface 11 , in particular its viscosity and its thermal conductivity. .
- the definition of the shape of the thermal interface can also take into account the technical possibilities and limitations of the tools used to deposit the thermal interface between the user system 2 and the thermal management system 1 .
- the advantages of the invention are multiple.
- the purpose of the invention is in the first place to homogenize the action of the thermal management system on the user system, which facilitates the control of the temperature of the user system.
- Better temperature control allows, among other things, to extend the life of the components of the user system, for example the life of the cells of a battery.
- Better temperature control also helps to optimize the performance of the user system. For example, in the case of batteries, better temperature control of the battery allows it to be used in its optimal thermal operating range.
- the invention makes it possible to optimize the quantity of material used to produce the thermal interface 11.
- the invention makes it possible to reduce the quantity of material, inducing a reduction in manufacturing cost and mass of the management system thermal.
- the invention makes it possible to reduce the flow rate of the fluid used by the thermal management system (in particular the cooling fluid).
- the thermal management system in particular the cooling fluid
- one of the conventional means used to homogenize the temperature of a battery consists in increasing the flow rate of the cooling fluid in order to increase the calorific power evacuated by the cooling system.
- the thermal interface 11 according to the invention makes it possible to modulate the heat exchanges according to the temperature gradient of the coolant. This solution therefore makes it possible to homogenize the temperature of the user system without increasing the flow rate of the cooling fluid.
- the invention therefore allows a gain on the size of components such as the pump generating the circulation of the coolant.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21783316.9A EP4226457A1 (fr) | 2020-10-07 | 2021-10-05 | Système de refroidissement |
JP2023521276A JP2023544792A (ja) | 2020-10-07 | 2021-10-05 | 冷却システム |
US18/248,117 US20240006679A1 (en) | 2020-10-07 | 2021-10-05 | Cooling system |
KR1020237012592A KR20230084178A (ko) | 2020-10-07 | 2021-10-05 | 냉각 시스템 |
CN202180070244.5A CN116368660A (zh) | 2020-10-07 | 2021-10-05 | 冷却系统 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR2010262 | 2020-10-07 | ||
FR2010262A FR3114914A1 (fr) | 2020-10-07 | 2020-10-07 | Système de refroidissement |
Publications (1)
Publication Number | Publication Date |
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WO2022074016A1 true WO2022074016A1 (fr) | 2022-04-14 |
Family
ID=73793424
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/077472 WO2022074016A1 (fr) | 2020-10-07 | 2021-10-05 | Système de refroidissement |
Country Status (7)
Country | Link |
---|---|
US (1) | US20240006679A1 (fr) |
EP (1) | EP4226457A1 (fr) |
JP (1) | JP2023544792A (fr) |
KR (1) | KR20230084178A (fr) |
CN (1) | CN116368660A (fr) |
FR (1) | FR3114914A1 (fr) |
WO (1) | WO2022074016A1 (fr) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120009455A1 (en) * | 2010-07-06 | 2012-01-12 | Ji-Hyoung Yoon | Battery Module |
US20140220397A1 (en) * | 2011-10-04 | 2014-08-07 | Behr Gmbh & Co. Kg | Thermal transfer device, temperature-control panel, and energy storage device |
US9979058B2 (en) | 2016-04-20 | 2018-05-22 | Ford Global Technologies, Llc | Battery thermal energy transfer assembly and method |
CN110838607A (zh) * | 2019-10-29 | 2020-02-25 | 江苏大学 | 一种截面渐缩式液冷板 |
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2020
- 2020-10-07 FR FR2010262A patent/FR3114914A1/fr active Pending
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2021
- 2021-10-05 CN CN202180070244.5A patent/CN116368660A/zh active Pending
- 2021-10-05 US US18/248,117 patent/US20240006679A1/en active Pending
- 2021-10-05 EP EP21783316.9A patent/EP4226457A1/fr active Pending
- 2021-10-05 JP JP2023521276A patent/JP2023544792A/ja active Pending
- 2021-10-05 KR KR1020237012592A patent/KR20230084178A/ko unknown
- 2021-10-05 WO PCT/EP2021/077472 patent/WO2022074016A1/fr active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120009455A1 (en) * | 2010-07-06 | 2012-01-12 | Ji-Hyoung Yoon | Battery Module |
US20140220397A1 (en) * | 2011-10-04 | 2014-08-07 | Behr Gmbh & Co. Kg | Thermal transfer device, temperature-control panel, and energy storage device |
US9979058B2 (en) | 2016-04-20 | 2018-05-22 | Ford Global Technologies, Llc | Battery thermal energy transfer assembly and method |
CN110838607A (zh) * | 2019-10-29 | 2020-02-25 | 江苏大学 | 一种截面渐缩式液冷板 |
Also Published As
Publication number | Publication date |
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FR3114914A1 (fr) | 2022-04-08 |
JP2023544792A (ja) | 2023-10-25 |
US20240006679A1 (en) | 2024-01-04 |
EP4226457A1 (fr) | 2023-08-16 |
KR20230084178A (ko) | 2023-06-12 |
CN116368660A (zh) | 2023-06-30 |
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