WO2024067982A1 - Batterie de véhicule pour véhicule électrique - Google Patents

Batterie de véhicule pour véhicule électrique Download PDF

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Publication number
WO2024067982A1
WO2024067982A1 PCT/EP2022/077229 EP2022077229W WO2024067982A1 WO 2024067982 A1 WO2024067982 A1 WO 2024067982A1 EP 2022077229 W EP2022077229 W EP 2022077229W WO 2024067982 A1 WO2024067982 A1 WO 2024067982A1
Authority
WO
WIPO (PCT)
Prior art keywords
segment
venting
battery
housing
connection
Prior art date
Application number
PCT/EP2022/077229
Other languages
English (en)
Inventor
Salomé LADEIRA
Lorenz STEFFEN
Johannes Hattendorff
Gi Chan Park
Hyokyu Lee
Original Assignee
Webasto SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Webasto SE filed Critical Webasto SE
Priority to PCT/EP2022/077229 priority Critical patent/WO2024067982A1/fr
Publication of WO2024067982A1 publication Critical patent/WO2024067982A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/204—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
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch 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
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/367—Internal gas exhaust passages forming part of the battery cover or case; Double cover vent systems
    • 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/383—Flame arresting or ignition-preventing means
    • 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

Definitions

  • the present invention relates to a vehicle battery with a heat shield and a method of manufacturing a vehicle battery with a heat shield.
  • Electrically driven vehicles are typically eguipped with an energy storage system in the form of a vehicle battery, which is also referred to as a traction battery.
  • vehicle battery stores the electrical energy reguired for driving and provides the energy to the electric drive of the vehicle.
  • the battery cells are usually provided with a cell vent, which may be a safety valve, e.g. a pressure relief valve or burst valve.
  • a cell vent e.g. a pressure relief valve or burst valve.
  • the cell vent enables venting of the battery cell in case of a critical or hazardous event, such as a thermal runaway.
  • the cell vent enables controlled venting of the battery cell to avoid catastrophic bursting of the battery cell.
  • Battery modules may include a vent element which is intended to enable and bundle flow of hot venting gases out of the battery module in case a cell vent is activated.
  • the battery housing may be provided with a burst disc providing a predetermined breaking point in case of a critical overpressure inside the battery housing.
  • EP 3 269 540 A1 discloses a compressible and flexible composite material for providing a thermal or electrical barrier material for insulating individual battery cells thermally and/or electrically against each other, or for insulating thermally a battery from an environment. Summary of the invention
  • the heat shield in a normal operating state is configured for shielding heat from the parts to be protected from heat while it remains in a neutral position.
  • the heat shield in a thermal runaway state, in which a critical venting pressure and/or a critical venting impulse prevails at the deformation segment of the heat shield is greater than a critical threshold venting pressure and/or critical threshold venting impulse, the heat shield is configured to deform.
  • the deformation may also form a deformation shape which enables guiding the hot venting gases to be directed in a direction inside of the battery housing which is less prone to be damaged.
  • the hot venting gases do not directly impinge upon a burst disc of a battery housing such that the battery housing may remain intact during venting.
  • connection segment By being arranged between the module housing and the battery housing, in other words downstream of the vent element, and being connected to the module housing at the connection segment, the connection segment can keep its position in case of a thermal runaway. Moreover, the connection of the connection segment and the module housing may provide a counteracting force, thus improving the deformation of the deformation segment.
  • a hot fluid flow resulting from a thermal runaway can be vented between the inner and battery housing.
  • a venting channel may be formed by the deformation of the heat shield.
  • the hot fluid flow can be guided and/or deflected in a predetermined venting direction by means of the deformation of the heat shield.
  • the hot fluid flow can be guided into the venting channel. In this way, effective venting can be provided.
  • the deformation segment may also be arranged to be deformed when a venting pressure prevailing at the heat shield is greater than a critical threshold pressure and/or when a venting impulse is greater than a critical threshold impulse.
  • the heat shield may function as a heat shield under normal operating conditions but will transform into a venting channel if a thermal runaway takes place.
  • the battery housing may also comprise a burst disc, which is at least partially arranged in a venting safe area, which is defined by a parallel projection of the connection segment onto the battery housing.
  • the parallel projection is a conceptual projection from the connection means going parallel through the connection segment resulting in a projected area on the inside of the battery housing, that is upstream of the vent element.
  • connection of the connection segment to the outside of the module housing, the respective space that is the venting safe area, between the inner and battery housing adjacent to the connecting segment has a minimized risk of being affected by the venting pressure or by the hot fluid flow.
  • the deformation of the heat shield may also provide a first venting channel which may be configured for directing the hot fluid flow in a predetermined venting direction. That is, in case of a thermal runaway the hot fluid flow effecting the critical venting pressure prevailing at the heat shield may deform, specifically plastically deform, the heat shield such that the heat shield is deformed in a deformation shape which may provide the first venting channel. Specifically, the first venting channel allows the hot fluid for expanding. Accordingly, upon deforming and providing the first venting channel, an unintended rupture or damage of the heat shield may be avoided.
  • the first venting channel provided by the deformation may guide the hot fluid flow to uncritical areas and/or away from critical areas.
  • the vehicle battery may further comprise a second venting channel configured for directing the hot fluid flow in the predetermined venting direction, wherein the first venting channel is fluidly connectable to the second venting channel.
  • a transition from the first venting channel to the second venting channel can be provided. In this way, hot fluid flowing from the vent element can easily be guided to the second venting channel.
  • the deformation segment of the heat shield may further be configured for fluidly connecting with the second venting channel upon deformation. In this way, the transition from the first venting channel to the second venting channel can be provided in a smooth manner.
  • a maximum distance between a first closest edge of the connection segment and a corresponding second closest edge of the vent element may not be greater than 3.0 times of a minimum opening diameter of the vent element, specifically not greater than 1 .5 times, more specifically not greater than 0.5 times.
  • an undesired dead venting space which is located between the vent element and the connection segment can be reduced.
  • the dead venting space effect heat accumulation and deteriorate the desired venting. Accordingly, providing the first venting channel for effectively directing the hot fluid flow in the predetermined venting direction may be improved.
  • a minimum distance between the first closest edge of the connection segment and the corresponding second closest edge of the vent element may be greater than 0.1 times of the vent element minimum opening diameter, specifically greater than 0.2 times, more specifically greater than 0.3 times. In this way, the pressure acting on the connection segment may be reduced and a risk of breaking or failure of the connection means may be reduced.
  • a surface area of the deformation segment may be at least 1 .5 times of a surface area of the vent element, specifically at least 3.0 times, more specifically at least 5.0 times.
  • the first venting channel provided by the deformation shape may have sufficient size for directing the hot fluid flow in the predetermined venting direction.
  • the vent element may further have an open passage angle defined by the angle between the center point of the vent element and the respective two closest corner points of the connection segment, wherein the open passage angle is directed away from the connection segment and may have a value of at least 90 degrees, specifically at least 135 degrees, more specifically at least 225 degrees.
  • connection means which provide a venting barrier
  • connection means which provide a venting barrier
  • desired guiding of the hot fluid flow in the predetermined venting direction may be improved.
  • the deformation segment may further comprise a deflection segment.
  • the deflection segment may be configured for deflecting the hot fluid flow.
  • the deflection segment may be configured to be particularly robust against hot fluid and/or high pressure, for example by means of a plate of metal or ceramics.
  • the deformation segment may comprise a venting segment.
  • the venting segment may be configured for directing the hot fluid flow in the predetermined venting direction.
  • the heat shield may further comprise a first bend segment which couples the connection segment with the deflection segment.
  • the first bend segment may be configured for bending upon being loaded by the critical venting pressure for at least partially providing the deformation shape.
  • the heat shield may also comprise a second bend segment which couples the deflection segment with the venting segment.
  • the second bend segment may be configured for bending upon being loaded by the critical venting pressure for at least partially providing the deformation shape.
  • the first and/or second bend segment may be provided in the form of an integral hinge.
  • the deformation shape By being provided with the first and/or second bend segment, the deformation shape can be designed or defined very precisely. Moreover, in this way the risk of rupture or damage of the heat shield can be further reduced.
  • a length of the deflection segment may be at least 1 .5 times of a height distance between the module housing and the battery housing measured adjacent to the vent element, specifically at least 2.0 times, more specifically at least 3.0 times.
  • the battery housing can provide a stop for the deformation process. Accordingly, by adjusting the length of the deflection segment in respect to the height distance between the module housing and the battery housing a predetermined deflection angle can be provided.
  • the predetermined deflection angle can enable for providing a predetermined deformation shape.
  • the deformation segment may be configured for bending upon being loaded by the critical venting pressure and/or the critical venting impulse for at least partially providing the deformation, wherein in the case of a thermal runaway, the deformation may be provided by limiting the bending of the deformation segment by means of an adjacent portion of the battery housing.
  • the deformation segment may start bending until abutting against the battery housing, i.e. against the respective adjacent part of the battery housing, wherein the abutment may end the bending.
  • the heat shield may be in the form of a specific deformation shape. Accordingly, the shape and the arrangement of the battery housing may affect the deformation shape. Due to the first and/or second bend segment, the heat shield may be configured to at least partially adapt to the shape of the battery housing upon bending. In this way, the transition from the first venting channel to the second venting channel can be provided in a very smooth manner. Further, due to the first and/or second bend segment, the heat shield itself can be designed in an easy manner of low complexity while still being capable of providing the deformation shape.
  • connection segment may be connected to the module housing by a connection means which may be provided or comprise by adhesive bonding means and/or form fit means.
  • connection means may be configured for withstanding the hot fluid flow and/or the venting pressure. In other words, in case of a thermal runaway the connection segment will keep its position relative to the module housing.
  • the heat shield may comprise a metal material.
  • the heat shield may substantially consist of a metal material.
  • a particularly thin heat shield may be provided which is still stable and robust.
  • the heat shield can be rigid, thus enabling for keeping intended shape and distances to adjacent housing structures.
  • providing a rigid heat shield allows for connecting the heat shield to the module housing only in a limited connection region, while the heat shield can keep its position. In this way, it is not necessary to connect the heat shield to the module housing in a holohedral manner.
  • the first venting channel can be provided while cutouts in the heat shield can be avoided.
  • the above mentioned objective is also solved by means of a method for manufacturing a vehicle battery including providing a battery housing and a module housing having a vent element.
  • the method comprises a step of providing a heat shield which is at least partially flexible and/or bendable upon being loaded with a critical venting pressure; further a step of determining a connection region of the module housing, the connection region being adjacent and spaced from a vent element of the module housing; and a step of attaching a connection section of the heat shield to the connection region by connection means.
  • a venting safe area may be provided at the battery housing.
  • sensible elements provided at the battery housing such as a burst disc, can be arranged in the venting safe area.
  • sensible elements can be protected from being damaged from a hot fluid flow resulting from a thermal runaway.
  • the step of determining a connection region may comprise the sub steps of determining a minimum distance between the first closest edge of the connection segment and the corresponding second closest edge of the vent element; and further the sub step of determining an open passage angle defined by the angle between a center point of the vent element and the respective two closest corner points of the connection segment, wherein the open passage angle is directed away from the connection segment.
  • the method may further comprise a step of determining a venting safe area.
  • the venting safe area refers to a region at the battery housing being protected from impact of hot fluid flow due to the determination of the connection region.
  • the venting safe area may be determined by conceptually projecting a cross section along the joining plane of the connection region onto the battery housing.
  • the method may further comprise a step of arranging a sensible element, such as a burst disc, which shall be protected from impact of hot fluid flow, at the venting safe area.
  • a sensible element such as a burst disc
  • Figures 1 a,b schematically show a cross sectional side view of a part of a vehicle battery according to one embodiment
  • Figure 1c schematically shows a top view of the arrangement shown in Figures 1a, b
  • Figure 2a schematically shows a cross sectional side view of the arrangement shown in Figures 1a, b according to another embodiment
  • Figure 2b, c schematically show a top view of the arrangement according to a further embodiment
  • Figure 3a, b schematically show a cross sectional side view of a vehicle battery according to another embodiment
  • Figure 4 shows a flow diagram illustrating a method for manufacturing
  • Figures 5, 6 schematically show a cross sectional side view of a vehicle battery.
  • FIGS 1a, b schematically show a cross sectional side view of a part of a vehicle battery 1 which includes a battery module 3.
  • the vehicle battery 1 may include more than one battery module 3 but only one is shown here for simplicity.
  • the battery module 3 comprises a module housing 4 for housing the battery cells 2.
  • the battery cells 2 are organized in the battery module 3 mechanically as well as electrically.
  • a battery module 3 typically also includes at least some control circuitry as well as sensors for determining the health of the battery cells 2, e.g. in form of a temperature sensor and/or to determine the state of charge of the battery cells 2 in the battery module 3.
  • the battery module 3 comprises a plurality of battery cells 2 which are electrically connected together in series and/or in parallel, wherein the battery cells 2 may be in the form of pouch cells, prismatic cells or cylindrical cells.
  • the module housing 4 is provided with a vent element 6 for venting at least one battery cell 2 in case of an event such as a thermal runaway.
  • a heat shield 10 is provided to be situated between the vent element 6 of the battery module 3 and the battery housing 8.
  • the heat shield 10 is intended to direct exhaust gases expelled from the vent element 6 in a direction which is less harmful for the entire battery.
  • the heat shield 10 comprises a deformation segment 14 and a connection segment 12 which is connected by connecting means 7 to a connection region 52 of the module housing 4.
  • the connection region 52 arranged adjacent to but spaced from the vent element 6.
  • the deformation segment 14 comprises a deflection segment 44 and a venting segment 46.
  • a venting direction VD is defined as a direction leading away from the vent element 6 in a direction opposite to the connection means 7.
  • Figure 1 b illustrates the case of a thermal runaway TR within the battery module 3.
  • a hot fluid flow FF causes a critical venting pressure and/or a critical venting impulse which first prevails at the heat shield 10, specifically at the deformation segment 14.
  • the resulting deformation shape 16 may provide a first venting channel 22 which is configured for directing the hot fluid flow FF in the venting direction VD.
  • the first venting channel 22 is formed between the module housing 4 and the deformation shape 16 of the deformation segment 14 which is deformed by the critical venting pressure and/or critical venting impulse.
  • the first venting channel 22 is very schematically illustrated by dotted lines in the Figure.
  • Figure 1c schematically shows a top view of the assembly shown in Figures 1a,b.
  • the deflection segment 44 is shown partly transparent in the Figure, such that the vent element 6 being covered by the heat shield 10 and having a surface area 36 can be gathered. Further it can be gathered that the deformation segment 14, formed by the deflection segment 44 and the venting segment 46, has a surface area 34 which is at least 1 .5 times of a surface area 36 of the vent element 6, specifically at least 3.0 times, more specifically at least 5.0 times.
  • connection segment 12 has a connection area 12a which refers to the very area of the connection segment 12 that is connected to the connection region 52 by the connection means 7.
  • Figures 2a-c illustrate dimensions of the proposed arrangements.
  • Figure 2a shows that a maximum distance 26 between a first closest edge 28 of the connection segment 12 and a corresponding second closest edge 60 of the vent element 6 is limited for avoiding a dead venting space between the vent element 6 and the connection region 52.
  • the maximum distance 26 is not greater than 3.0 times of the minimum opening diameter 32 of the vent element 6, specifically not greater than 1 .5 times, more specifically not greater than 0.5 times.
  • the vent element 6 may be arranged spaced from the connection region 52 in order to avoid high pressure loads or impulses acting on the connection segment 12.
  • Figures 2b, c show that the vent element 6 has an open passage angle 38 defined by the angle between the center point 40 of the vent element 6 and the respective two closest corner points 42a, b of the connection segment 12, wherein the open passage angle 38 is directed away from the connection segment 12.
  • the open passage angle 38 may have a value of at least 90 degrees (see Fig. 2c), specifically at least 135 degrees, more specifically at least 225s degrees (see Fig. 2b).
  • connection area 12a has a recess 12b, such that the vent element 6 is at least partially surrounded by the connection area 14a. In this way, deflecting and guiding the hot fluid flow FF in the predetermined venting direction VD can be improved.
  • FIGS 3a, b schematically show a cross sectional side view of a vehicle battery 1 comprising an battery housing 8 which houses a battery module 3.
  • the battery module 3 includes a module housing 4 containing at least one battery cell 2 and having a vent element 6.
  • the vehicle battery 1 comprises a heat shield 10 as described above which is arranged between the battery housing 8 and the module housing 4.
  • the battery housing 8 is provided with a cover 19 and a burst disc 17 which is partially arranged in a venting safe area 18.
  • the venting safe area 18 is defined by a parallel projection 20 of the connection segment 12 of the heat shield 10 onto the battery housing 8, as schematically indicated by arrows 20.
  • the vehicle battery 1 is provided with a second venting channel 24, which is indicated by dotted lines in Figures 3a, b.
  • a second venting channel 24 which is indicated by dotted lines in Figures 3a, b.
  • the venting pressure and/or venting impulse effected by the hot fluid flow FF exceeds a critical pressure threshold and/or critical impulse threshold of the heat shield 10 such that the deformation segment 14 is deformed or bended and thus provides the deformation shape 16.
  • the deformation shape 16 is provided by limiting the deforming or bending of the deformation segment 14 by means of the adjacent part of the battery housing 8.
  • the deformation shape 16 is provided by the first bend segment 48 and the second bend segment 50. Accordingly, the deflection segment 44 which is arranged between the first and second bend segment 48, 50 is configured for deflecting the hot fluid flow FF away from the direction of the vent element 6 and towards the venting direction VD.
  • venting segment 46 is configured for further guiding the hot fluid flow FF in the venting direction VD. Specifically, upon abutting against the battery housing 8, the venting segment 46 of the heat shield 10 can smoothly enable a transition of the hot fluid flow from the first venting channel 22 to the second venting channel 24. From the second venting channel 24 the hot fluid flow FF can flow to a venting channel (not shown) of the vehicle battery 1 .
  • the hot fluid flow FF may flow towards the burst disc 17 to be vented from the battery housing 8 in case the TR event calls for such extreme measures.
  • the hot fluid flow FF will be deviated first such that the impulse and temperature of the hot fluid flow FF does not impinge upon the burst disc 17 in a direct way but by the deviation of the hot fluid flow FF by means of the heat shield 10 the temperature and impulse of the hot fluid flow FF may be significantly reduced before the flow impinges upon the burst disc 17. Accordingly, venting to the outside of the battery housing 8 can be achieved more reliably and with reduced impact upon the vehicle structures adjacent to the burst disc 17.
  • Figure 4 shows a flow diagram illustrating a method for manufacturing a vehicle battery comprising a battery housing 8, a module housing 4 and a heat shield 10.
  • FIGS 5, 6 schematically show a cross sectional side view of a vehicle battery 1 as described above in a more detailed manner. Specifically, in the configuration shown in Figures 5, 6 the heat shield 10 covers two adjacent battery modules 3, each being provided with a cell vent 6, wherein the respective predetermined venting directions VD are directed opposed to each other.
  • connection segment 42a ,b closest corner points of the connection segment

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

La présente invention concerne une batterie de véhicule (1) pour un véhicule électrique, comprenant au moins un module de batterie (3) avec au moins un élément de batterie (2) et un boîtier de module (4) pour loger l'au moins un élément de batterie (2), le module de batterie (3) comprenant un élément d'évent (6) pour évacuer au moins l'un des éléments de batterie (2) dans le cas d'un emballement thermique (TR), un boîtier de batterie (8) pour loger l'au moins un module de batterie (3), un écran thermique (10) disposé entre le boîtier de module (4) et le boîtier de batterie (8) pour recouvrir l'élément d'évent (6), l'écran thermique (10) comprenant un segment de connexion (12) et un segment de déformation (14), le segment de connexion (12) étant connecté au boîtier de module (4), et le segment de déformation (14) étant agencé pour être déformé dans le cas d'un emballement thermique (TR) d'un élément de batterie (2).
PCT/EP2022/077229 2022-09-29 2022-09-29 Batterie de véhicule pour véhicule électrique WO2024067982A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/077229 WO2024067982A1 (fr) 2022-09-29 2022-09-29 Batterie de véhicule pour véhicule électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2022/077229 WO2024067982A1 (fr) 2022-09-29 2022-09-29 Batterie de véhicule pour véhicule électrique

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WO2024067982A1 true WO2024067982A1 (fr) 2024-04-04

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3269540A1 (fr) 2016-07-15 2018-01-17 Von Roll Schweiz AG Matériau composite compressible et souple utile en particulier comme matériau de construction pour batteries
EP4020693A1 (fr) * 2020-04-29 2022-06-29 Lg Energy Solution, Ltd. Bloc-batterie et dispositif le comprenant
CN114976471A (zh) * 2022-07-28 2022-08-30 广东采日能源科技有限公司 一种储能电池箱

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