WO2026005151A1 - 배터리 어셈블리 - Google Patents
배터리 어셈블리Info
- Publication number
- WO2026005151A1 WO2026005151A1 PCT/KR2024/017639 KR2024017639W WO2026005151A1 WO 2026005151 A1 WO2026005151 A1 WO 2026005151A1 KR 2024017639 W KR2024017639 W KR 2024017639W WO 2026005151 A1 WO2026005151 A1 WO 2026005151A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- venting
- battery
- battery assembly
- paragraph
- cover
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
- H01M50/358—External gas exhaust passages located on the battery cover or case
-
- 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
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
-
- 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
- H01M50/317—Re-sealable arrangements
- H01M50/325—Re-sealable arrangements comprising deformable valve members, e.g. elastic or flexible valve members
- H01M50/333—Spring-loaded vent valves
-
- 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
-
- 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
- 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 battery assembly.
- lithium secondary batteries are receiving attention for their advantages of being able to charge and discharge freely, having a very low self-discharge rate, and having a high energy density, as they have almost no memory effect compared to nickel-based secondary batteries.
- Lithium secondary batteries primarily use lithium oxide and carbon materials as the positive and negative electrode active materials, respectively.
- Lithium secondary batteries comprise an electrode assembly comprising positive and negative plates coated with the positive and negative electrode active materials, respectively, with a separator interposed between them, and an outer case, i.e., a battery case, that seals and encloses the electrode assembly together with an electrolyte.
- lithium secondary batteries can be classified into can-type secondary batteries in which the electrode assembly is built into a metal can and pouch-type secondary batteries in which the electrode assembly is built into a pouch of an aluminum laminate sheet, depending on the shape of the outer packaging material.
- secondary batteries are widely used for power and energy storage not only in small devices such as portable electronic devices but also in medium- to large-sized devices such as electric vehicles and energy storage systems (ESS).
- Multiple secondary batteries can be electrically connected and housed within a module case to form a single battery module.
- Each secondary battery within a battery module can be referred to as a battery cell.
- multiple such battery modules can be connected to form a single battery pack.
- a battery pack contains multiple battery modules, each of which contains multiple battery cells, it may be vulnerable to a thermal chain reaction between battery modules or between battery cells. For example, if an event such as thermal runaway occurs within a single battery module, the propagation of this thermal runaway to other battery modules or cells must be prevented. If the propagation of thermal runaway between battery modules or cells is not properly prevented, an event occurring in a specific battery module or battery cell may trigger a chain reaction of thermal reactions in other battery modules or cells, potentially causing an explosion or fire, or potentially increasing its scale.
- gas or flames may be randomly discharged to the outside. If the discharge of gas or flames is not properly controlled, there is a risk that the gas or flames may be discharged toward other battery modules, causing a thermal chain reaction in the other battery modules.
- the front side of the battery module may have module terminals, which may be configured to electrically connect to other battery modules or battery packs, such as module bus bars. Therefore, if flames are discharged toward the front side of such a battery module, the module terminals may be damaged within the battery pack, causing an electrical short.
- other battery modules may be present at the front side of the battery module, if flames are discharged toward the front side of a specific battery module, the discharged flames may easily spread to other battery modules, potentially causing a fire to spread between battery modules.
- thermal propagation between battery modules or cells fails to be properly controlled, resulting in a sudden fire or explosion, there is a high possibility of causing casualties. For example, if thermal runaway occurs in an electric vehicle, if a certain amount of time is not allowed for a full-blown fire to develop, occupants may not be able to escape safely.
- the present invention has been created to solve the above problems, and its purpose is to provide a battery assembly having an improved structure so as to appropriately control the discharge of flames and the like generated inside the battery assembly, and a battery pack or automobile including the same.
- the present invention may aim to provide a structure capable of preventing the exterior of a battery pack from being damaged when a thermal event occurs.
- the present invention may aim to prevent flames or ignitable particles from being emitted outside of a battery assembly when a thermal event occurs.
- the present invention may aim to provide a structure capable of suppressing heat transmission between battery assemblies.
- a battery assembly may include a frame providing a space therein and having an opening formed at the rear; a battery cell positioned inside the frame; a rear end cover coupled to the opening and having a venting hole; a body providing a space therein, an inlet hole formed in the body and communicating with the venting hole, and a venting channel formed in the body and configured to be openable and closable.
- the discharge hole may be formed on the upper surface of the body.
- venting channel may include: a cover for opening and closing the discharge hole; and an elastic member for providing restoring force in the direction in which the cover is closed.
- venting channel may further include a guide bar penetrating the cover and the elastic member.
- venting channel may include a partition that divides the interior of the body in an up-down direction.
- the partitions are provided in multiple numbers, and the multiple partitions can be arranged along the left and right directions.
- the plurality of partitions may divide the space provided by the body into a plurality of venting spaces, and the inlet hole and the discharge hole may be provided in each of the plurality of venting spaces.
- the plurality of discharge holes can be configured to be independently openable and closable.
- venting channel can be fastened to the rear end cover.
- the battery assembly may further include a power terminal protruding toward the front of the frame.
- a battery pack according to one aspect of the present invention comprises a battery assembly of the present invention.
- the battery pack further includes a case that provides a space therein and accommodates the battery assembly, the case including: a base plate on which the battery assembly is installed; and a side wall installed on the base plate, wherein the venting channel can be disposed between the rear end cover and the side wall.
- a vehicle according to one aspect of the present invention comprises a battery assembly of the present invention.
- damage to the exterior of a battery pack can be prevented even if a thermal event occurs.
- the electrical safety of a battery assembly can be improved.
- heat transmission between battery assemblies can be suppressed when a thermal event occurs.
- FIG. 1 is a drawing showing a battery pack according to one embodiment of the present invention.
- Figure 2 is a diagram showing a partial configuration of the battery pack of Figure 1.
- FIG. 3 is a drawing showing the battery module of Figure 2.
- Figure 4 is a diagram showing a partial configuration of the battery module of Figure 3.
- Figure 5 is an enlarged view of a portion of the configuration of Figure 4.
- Figure 6 is a drawing showing the configuration of Figure 5 in a different direction.
- Fig. 7 is a drawing showing a modified embodiment of Fig. 6.
- Figure 8 is a drawing showing the venting channel of Figure 2.
- Fig. 9 is a drawing showing a cross-sectional configuration along the cutting line C-C' of Fig. 8.
- Fig. 10 is a drawing showing the venting channel of Fig. 8 in a different direction.
- FIGS 11 and 12 are drawings showing the combination of the venting channel and the battery module of Figure 2.
- Fig. 13 is a drawing showing a cross-sectional configuration along the cutting line B-B' of Fig. 1.
- Figure 14 is a diagram showing changes in the configuration of Figure 13 when a thermal event occurs.
- Fig. 15 is a drawing showing a cross-sectional configuration along the cutting line A-A' of Fig. 1.
- Figure 16 is a diagram showing changes in the configuration of Figure 15 when a thermal event occurs.
- FIG. 1 is a drawing showing a battery pack according to one embodiment of the present invention.
- FIG. 2 is a drawing showing a partial configuration of the battery pack of FIG. 1.
- FIG. 3 is a drawing showing a battery module (200) of FIG. 2.
- FIG. 4 is a drawing showing a partial configuration of the battery module (200) of FIG. 3.
- a battery assembly may include a frame (210).
- the frame (210) may have a rectangular parallelepiped shape.
- the frame (210) may provide a space inside.
- the frame (210) may include a top plate, a bottom plate, and a pair of side plates.
- the frame (210) may have an open front and rear.
- the frame (210) may have an opening formed at the front.
- the frame (210) may have an opening formed at the rear.
- a battery assembly may include a battery cell (220).
- the battery cell (220) may be accommodated inside the frame (210).
- the battery cell (220) may be provided in plurality.
- the plurality of battery cells (220) may be stacked along the left-right direction or the Y-axis direction.
- the battery cell (220) may include a receiving portion (221) having an electrode assembly, a first sealing portion (222) protruding toward the front and rear sides of the receiving portion (221), and a second sealing portion (223) protruding toward the upper side of the receiving portion (221).
- the battery cell (220) may include an electrode lead (224) protruding toward the front and rear sides of the first sealing portion (222), respectively.
- Each battery cell (220) may extend along the front-back direction or the X-axis direction.
- the electrode lead (224) may protrude toward the front and rear of each battery cell (220).
- the battery cell (220) may refer to a secondary battery.
- the battery cell (220) may be a pouch-type secondary battery.
- the shape of the battery cell (220) is not limited to a pouch shape, and may have various shapes, such as a cylindrical shape or a rectangular parallelepiped shape.
- the battery cell (220) may be provided in multiple numbers.
- a battery assembly according to an embodiment of the present invention may include a rear end cover (242).
- the rear end cover (242) may be coupled to the rear of the frame (210).
- the rear end cover (242) may be coupled to an opening formed at the rear of the frame (210).
- the rear end cover (242) may include a third venting hole (242a).
- a battery assembly may include a venting channel (400).
- the venting channel (400) may include a body (410).
- the body (410) may form an exterior of the venting channel (400).
- the body (410) may provide a space therein.
- the venting channel (400) may have an inlet hole (411) formed in the body (410) and communicating with a third venting hole (242a).
- the third venting hole (242a) and the inlet hole (411) may be arranged to face each other.
- the venting channel (400) may have a discharge hole (412) formed in the body (410).
- the discharge hole (412) may be configured to be openable.
- venting gas (G) and ignitable particles (F) may be discharged through the third venting hole (242a).
- the venting gas (G) and ignitable particles (F) may collide with the body (410) of the venting channel (400).
- the ignitable particles (F) may fall downwards due to a decrease in energy after colliding with the body (410).
- the ignitable particles (F) may be prevented from being discharged to the outside of the venting channel (400).
- the venting gas (G) may decrease in energy after colliding with the body (410) and may move upwards.
- the discharge hole may be opened due to an increase in pressure inside the body (410).
- the venting gas (G) may be discharged to the outside of the venting channel (400) through the discharge hole (412). At this time, the energy of the venting gas (G) can be reduced, and damage to the battery assembly and adjacent components can be prevented by the venting gas (G).
- the venting gas (G) When the venting gas (G) is discharged from the venting channel (400), the internal pressure of the venting channel (400) can be reduced.
- the discharge hole (412) can be closed. This can block the venting gas (G) from flowing into the venting channel (400). This can suppress the propagation of a thermal event.
- a battery pack may include a case (100).
- the case (100) may provide a space therein.
- the case (100) may include a base plate (110), a side wall (120), and a pack cover (150).
- the base plate (110) may have a square shape.
- the base plate (110) may have a flat shape.
- the base plate (110) may form the exterior of the battery pack.
- the base plate (110) may provide an internal space of the battery pack.
- a battery pack according to an embodiment of the present invention may include a pack cover (150).
- the pack cover (150) may have a square plate shape.
- the pack cover (150) may have a flat plate shape.
- the pack cover (150) may form the exterior of the battery pack.
- the pack cover (150) may cover the internal space of the battery pack.
- a battery assembly according to one embodiment of the present invention may be positioned inside a case (100).
- the battery assembly may include a battery module (200).
- the battery assembly (200) may include a venting channel (400).
- a plurality of battery assemblies may be provided.
- a battery pack may include a partition wall (300).
- the partition wall (300) may include a first partition wall (310) and a second partition wall (320).
- a plurality of partition walls (300) may be provided.
- the partition wall (300) may be installed, fastened, fixed, combined, or attached to the upper surface of the base plate (110).
- the partition wall (300) may partition the internal space of the battery pack.
- a battery module (200) or a battery cell (220) may be positioned in the space partitioned by the partition wall (300).
- a battery pack according to an embodiment of the present invention may include a venting device (500).
- the venting device (500) may be installed on a side wall (120).
- the venting device (500) may be installed on a front side wall (120).
- the venting device (500) may be a gas valve.
- the venting device (500) may open to discharge gas when the pressure inside the case (100) increases.
- the venting device (500) may block external air from flowing into the case (100).
- a plurality of venting devices (500) may be provided.
- a battery module (200) may include a pad (250).
- the pad (250) may be positioned between a plurality of battery cells (220).
- the pad (250) may be positioned between at least some of the battery cells (220) and/or on the periphery of the stack.
- the pad (250) may be configured to be positioned between every four battery cells (220) stacked in the left-right direction.
- the pad (250) may be formed of an elastic material to enable swelling absorption of the battery cell (220).
- the pad (250) may be formed of a foam material such as polyurethane.
- the pad (250) may be formed of a material capable of blocking heat or flames.
- the pad (250) may be formed of an insulating or fire-retardant material such as silicone or mica.
- a battery module (200) may include a front busbar frame assembly (231).
- the front busbar frame assembly (231) may be provided at the front of a plurality of battery cells (220).
- the front busbar frame assembly (231) may be electrically connected to front-side electrode leads (224) of the plurality of battery cells (220).
- a battery module (200) may include a rear busbar frame assembly (232).
- the rear busbar frame assembly (232) may be provided at the rear of a plurality of battery cells (220).
- the rear busbar frame assembly (232) may be electrically connected to rear-side electrode leads (224) of the plurality of battery cells (220).
- a battery module (200) may include a front end cover (241).
- the front end cover (241) may be coupled to the front of the frame (210).
- the front end cover (241) may cover the front of the frame (210).
- the front end cover (241) may have a square shape.
- a battery module (200) may include a rear end cover (242).
- the rear end cover (242) may be coupled to the rear of the frame (210).
- the rear end cover (242) may cover the rear of the frame (210).
- the rear end cover (242) may have a square shape.
- a battery module (200) may include a front insulating cover (261).
- the front insulating cover (261) may be positioned between the front end cover (241) and the front busbar frame assembly (231).
- the front insulating cover (261) may electrically insulate the front busbar frame assembly (231) and the front end cover (241).
- a battery module (200) may include a rear insulating cover (262).
- the rear insulating cover (262) may be positioned between the rear end cover (242) and the rear busbar frame assembly (232).
- the rear insulating cover (262) may electrically insulate the rear busbar frame assembly (232) and the rear end cover (242).
- FIG. 5 is an enlarged view of a portion of the configuration of FIG. 4.
- FIG. 6 is a view showing the configuration of FIG. 5 in a different direction.
- a rear busbar frame assembly (232) may include a busbar frame (232a) and a busbar (232b).
- the busbar (232b) may be installed on the busbar frame (232a).
- the busbar (232b) may be electrically connected to the rear electrode leads (224) of a plurality of battery cells (220).
- the busbar (232b) may be provided in plurality.
- the plurality of busbars (232b) may be arranged along the left-right direction or the Y-axis direction.
- the busbar frame (232a) may be provided with a first venting hole (232c).
- the first venting hole (232c) may be a through hole.
- the first venting hole (232c) may face the first sealing portion (222) on the rear side of the battery cell (220).
- the first venting holes (232c) may be provided in multiple numbers. Some of the multiple first venting holes (232c) may be arranged between two adjacent bus bars (232b). Venting gas (G) and flammable particles (F) generated inside the battery module (200) may be discharged to the rear of the battery module (200) through the first venting hole (232c).
- a battery assembly may include a power terminal (231a) protruding forward of a frame (210).
- the power terminal (231a) may be provided in a front busbar frame assembly (231).
- the power terminal (231a) may protrude from the front busbar assembly (231).
- the power terminals (231a) may be provided in pairs.
- the power terminals (231a) may be exposed to the outside of the battery module (200).
- the power terminal (231a) can be electrically connected to the power terminal (231a) of the neighboring battery module (200).
- the inter-bus bar (600) can electrically connect the neighboring battery modules (200).
- the front side of the battery module (200) may be configured with major components such as a power terminal (231a), a control terminal, and an inter-bus bar (600).
- major components such as a power terminal (231a), a control terminal, and an inter-bus bar (600).
- a power terminal (231a) By discharging venting gas (G) and flammable particles (F) to the rear side of the battery module (200), damage to the front side of the battery module (200) can be minimized.
- thermal event propagation to neighboring battery modules (200) can be suppressed.
- a rear insulating cover (262) of a battery module (200) may include a second venting hole (262a).
- the second venting hole (262a) may be a through hole.
- the second venting hole (262a) may face the rear busbar frame assembly (232) or the first venting hole (232c).
- the second venting hole (262a) may be in communication with the first venting hole (232c).
- a plurality of second venting holes (262a) may be provided.
- a plurality of second venting holes (262a) may be in communication with a plurality of first venting holes (232c).
- a battery module (200) of a battery pack may further include a fire-resistant sheet (270).
- the fire-resistant sheet (270) may include a material having high heat resistance or fire resistance.
- the fire-resistant sheet (270) may be positioned on the inner side of the rear end cover (242).
- the fire-resistant sheet (270) may be positioned between the rear end cover (242) and the rear insulating cover (262).
- the fire-resistant sheet (270) may be fixed between the rear end cover (242) and the rear insulating cover (262).
- the refractory sheet (270) may be positioned between the third venting hole (242a) and the second venting hole (262a).
- the refractory sheet (270) may cover a plurality of third venting holes (242a) and a plurality of second venting holes (262a).
- the internal pressure of the frame (210) may increase due to the venting gas (G) and the ignitable particles (F). This may cause a portion of the refractory sheet (270) to rupture.
- some of the second venting holes (262a) and some of the third venting holes (242a) may be connected, and the venting gas (G) and the ignitable particles (F) may be discharged.
- the unruptured portion of the refractory sheet (270) may still cover the remaining second venting holes (262a) and the remaining third venting holes (242a). This may prevent the venting gas (G) and the ignitable particles (F) discharged to the outside of the battery module (200) from flowing into the inside of the battery module (200).
- Fig. 7 is a drawing showing a modified embodiment of Fig. 6.
- a refractory sheet (270) may have a separation line (271).
- the separation line (271, score line) may be used as a term including and collectively referring to a perforated line (271), a notching line (271), a cutting line (271), a shredding line (271), a tear line (271), or a separation line (271).
- the separation line (271) may be configured to be easily separated by pressure applied to the refractory sheet (270).
- Fig. 8 is a drawing showing the venting channel (400) of Fig. 2.
- Fig. 9 is a drawing showing a cross-sectional configuration along the cutting line C-C' of Fig. 8.
- Fig. 10 is a drawing showing the venting channel (400) of Fig. 8 in a different direction.
- a discharge hole (412) may be formed on the upper surface of the body (410).
- Venting gas (G) introduced into the body (410) through the inlet hole (411) may collide with the body (410).
- the venting gas (G) with reduced energy may be discharged to the outside of the venting channel (400).
- Inflammable particles (F) introduced into the body (410) through the inlet hole (411) may collide with the body (410).
- the discharge hole (412) on the upper surface of the body (410 the inflammable particles may fall down after colliding with the body (410).
- the venting channel (400) may include a cover (440).
- the cover (440) may open and close the exhaust hole (412).
- the venting channel (400) may include an elastic member (460).
- the elastic member (460) may provide a restoring force in the direction in which the cover (440) closes.
- the cover (440) may open the exhaust hole (412).
- the exhaust hole (412) may be opened.
- the cover (440) may close the exhaust hole (412) by the restoring force provided by the elastic member (460).
- the venting channel (400) may include a guide bar (450).
- the guide bar (450) may penetrate the cover (440).
- the cover (440) may be configured to move along the guide bar (450).
- the cover (440) may be configured to move in the Z-axis direction along the guide bar (450).
- the exhaust hole (412) may be opened.
- the exhaust hole (412) may be closed.
- the guide bar (450) can penetrate the elastic member (460).
- the elastic member (460) may be a coil spring (460).
- the guide bar (450) can penetrate the coil spring (460).
- the guide bar (450) may be formed at the top of the body (410).
- the guide bar (450) may be formed integrally with the body (410). Alternatively, the guide bar (450) may be joined, fastened, attached, or fixed to the top of the body (410).
- the guide bar (450) may include a stopper (451).
- the stopper (451) may be formed at the top of the guide bar (450).
- the elastic member (460) may be compressed or tensioned between the stopper (451) and the cover (440).
- the elastic member (460) may provide a restoring force in the direction in which the cover (440) closes.
- the elastic member (460) may provide a restoring force in the -Z-axis direction.
- the cover (440) can move in the +Z-axis direction. Additionally, the elastic member (460) can be compressed. Additionally, the discharge hole (412) can be opened.
- the cover (440) can move in the -Z-axis direction.
- the elastic member (460) can be restored.
- the discharge hole (412) can be closed.
- venting gas (G) When the venting gas (G) is discharged to the outside of the venting channel (400) through the discharge hole (412), it can be blocked from flowing into the venting channel (400) through the discharge hole (412).
- the venting channel (400) may include a partition (420).
- the partition (420) may partition the interior of the body (410).
- the partition (420) may extend in the vertical direction or along the Z-axis direction.
- each partitioned space may be referred to as a venting space (VS).
- venting spaces Due to the presence of multiple venting spaces (VS), the space through which venting gas (G) and ignitable particles (F) can propagate can be limited to a smaller area. This can further suppress the propagation of thermal events.
- a venting channel (400) may have multiple partitions (420).
- the multiple partitions (420) may be arranged in the left-right direction or along the Y-axis direction.
- a plurality of partitions (420) can divide the internal space of the body (410) into a plurality of venting spaces (VS).
- venting spaces Due to the presence of multiple venting spaces (VS), the space through which venting gas (G) and ignitable particles (F) can propagate can be restricted to a smaller extent. This can further suppress the propagation of thermal events.
- each venting space (VS) of a venting channel (400) may be provided with one or more inlet holes (411).
- Each venting space (VS) may be provided with one or more discharge holes (412).
- Each venting space (VS) may be provided with one or more covers (440).
- each venting space (VS) can be opened and closed independently. Since each venting space (VS) independently discharges the venting gas (G), even if one venting space (VS) discharges the venting gas (G), the cover (440) of the remaining venting space (VS) can keep the exhaust hole (412) closed. As a result, the propagation of thermal events can be more strongly suppressed.
- FIG. 11 and FIG. 12 are drawings showing the combination of the venting channel (400) and the battery module (200) of FIG. 2.
- the venting channel (400) may be fastened, coupled, fixed, or attached to the rear end cover (242).
- the venting channel (400) may have a fastening portion (430) that protrudes forward or in the +X-axis direction from the body (410).
- the fastening portion (430) may be formed integrally with the body (410).
- the fastening portion (430) and the rear end cover (242) may be fastened via a fastening member (S).
- the venting channel (400) can be stably coupled to the rear end cover (242). As a result, even if venting gas (G) or flammable particles (F) are discharged, the venting channel (400) can be stably maintained in a state of being coupled to the battery module (200).
- Fig. 13 is a drawing showing a cross-sectional configuration taken along the cutting line B-B' of Fig. 1.
- Fig. 14 is a drawing showing a change in the configuration of Fig. 13 when a thermal event occurs.
- a venting channel (400) according to an embodiment of the present invention may be located between the side wall (120) and the battery module (200).
- the venting channel (400) may be located between the side wall (120) and the rear venting channel (400).
- the battery assembly can be installed on the base plate (110).
- the battery module (200) can be installed on the base plate (110).
- the frame (210) can be installed on the base plate (110).
- the venting gas (G) and the ignitable particles (F) can move backward or along the -X axis direction through the first venting hole (232c) and the second venting hole (262a).
- the venting gas (G) and the ignitable particles (F) can rupture the refractory sheet (270).
- the venting gas (G) and the ignitable particles (F) can flow into the venting space (VS) through the ruptured portion of the refractory sheet (270) and the third venting hole (242a).
- the venting gas (G) and the ignitable particles (F) that flow into the venting space (VS) can collide with the body (410) and have their energy reduced.
- venting gas (G) and the ignitable particles (F) can be prevented from flowing into the adjacent venting space (VS) or the battery module (200). Additionally, the unruptured portion of the refractory sheet (270) can more reliably block venting gas (G) and ignitable particles (F) from entering the battery module (200).
- the side wall (120) forming the exterior of the battery pack may not be damaged by the venting gas (G) and ignitable particles (F). Therefore, even if a thermal event occurs, the exterior of the battery pack may maintain its stable shape. Consequently, the ignitable particles (F) or flames may not be discharged to the exterior of the battery pack. Furthermore, the venting gas (G), with its energy reduced and its temperature lowered, may be discharged to the exterior of the battery pack through the venting device (500).
- Fig. 15 is a drawing showing a cross-sectional configuration taken along the cutting line A-A' of Fig. 1.
- Fig. 16 is a drawing showing a change in the configuration of Fig. 15 when a thermal event occurs. Referring to Figs. 1, 2, 15, and 16, the discharge hole (412) of the venting channel (400) according to one embodiment of the present invention may face the pack cover (150).
- the venting gas (G) with reduced energy in the venting space (VS) can move upward or along the +Z-axis direction through the discharge hole (412).
- the venting gas (G) can flow between the battery module (200) and the pack cover (150) and be discharged to the outside of the battery pack through the venting device (500).
- the pack cover (150) forming the exterior of the battery pack may not be damaged by venting gas (G) and ignitable particles (F). Therefore, even if a thermal event occurs, the exterior of the battery pack can stably maintain its shape.
- the battery pack according to the present invention may further include various other components in addition to the battery assembly, such as various battery pack components known at the time of filing of the present invention, such as a BMS, a bus bar, a relay, a current sensor, etc.
- various battery pack components known at the time of filing of the present invention such as a BMS, a bus bar, a relay, a current sensor, etc.
- the battery pack according to the present invention can be applied to automobiles such as electric vehicles or hybrid vehicles.
- the automobile according to the present invention may include the battery assembly according to the present invention.
- the automobile according to the present invention may further include various other components, in addition to the battery assembly.
- the automobile according to the present invention may further include a body, a motor, a control device such as an electronic control unit (ECU), and the like.
- ECU electronice control unit
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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (13)
- 내부에 공간을 제공하고 후방에 개구부가 형성된 프레임;상기 프레임의 내부에 위치하는 배터리 셀;상기 개구부에 결합되고, 벤팅 홀을 구비하는 리어 엔드 커버;내부에 공간을 제공하는 바디, 상기 바디에 형성되고 상기 벤팅 홀과 연통되는 유입 홀 및 상기 바디에 형성되고 개폐 가능하게 구성된 배출 홀을 구비하는 벤팅 채널을 포함하는 배터리 어셈블리.
- 제1 항에 있어서,상기 배출 홀은,상기 바디의 상면에 형성되는 배터리 어셈블리.
- 제1 항에 있어서,상기 벤팅 채널은:상기 배출 홀을 개폐하는 커버; 그리고,상기 커버가 닫히는 방향으로 복원력을 제공하는 탄성 부재를 포함하는 배터리 어셈블리.
- 제3 항에 있어서,상기 벤팅 채널은,상기 커버 및 상기 탄성 부재를 관통하는 가이드 바를 더 포함하는 배터리 어셈블리.
- 제1 항에 있어서,상기 벤팅 채널은,상기 바디의 내부를 상하 방향을 따라 구획하는 파티션을 포함하는 배터리 어셈블리.
- 제5 항에 있어서,상기 파티션은 복수로 구비되고,상기 복수의 파티션은,좌우 방향을 따라 배치되는 배터리 어셈블리.
- 제6 항에 있어서,상기 복수의 파티션은,상기 바디가 제공하는 공간을 복수의 벤팅 공간으로 구획하고,상기 유입 홀과 상기 배출 홀은,상기 복수의 벤팅 공간 각각에 구비되는 배터리 어셈블리.
- 제7 항에 있어서,상기 복수의 배출 홀은,독립적으로 개폐 가능하게 구성되는 배터리 어셈블리.
- 제1 항에 있어서,상기 벤팅 채널은,상기 리어 엔드 커버에 체결되는 배터리 어셈블리.
- 제1 항에 있어서,상기 프레임의 전방으로 돌출되는 전력 단자를 더 포함하는 배터리 어셈블리.
- 제1 항 내지 제10 항 중 어느 한 항의 배터리 어셈블리를 포함하는 배터리 팩.
- 제11 항에 있어서,내부에 공간을 제공하고, 상기 배터리 어셈블리를 수용하는 케이스를 더 포함하고,상기 케이스는:상기 배터리 어셈블리가 설치되는 베이스 플레이트; 그리고,상기 베이스 플레이트에 설치되는 사이드 월을 포함하고,상기 벤팅 채널은,상기 리어 엔드 커버와 상기 사이드 월의 사이에 배치되는 배터리 팩.
- 제1 항 내지 제10 항 중 어느 한 항의 배터리 어셈블리를 포함하는 자동차.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480053122.9A CN121713321A (zh) | 2024-06-27 | 2024-11-08 | 电池组件 |
| EP24940936.8A EP4712244A1 (en) | 2024-06-27 | 2024-11-08 | Battery assembly |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2024-0084812 | 2024-06-27 | ||
| KR1020240084812A KR20260001403A (ko) | 2024-06-27 | 2024-06-27 | 배터리 어셈블리 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2026005151A1 true WO2026005151A1 (ko) | 2026-01-02 |
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ID=98222189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2024/017639 Pending WO2026005151A1 (ko) | 2024-06-27 | 2024-11-08 | 배터리 어셈블리 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4712244A1 (ko) |
| KR (1) | KR20260001403A (ko) |
| CN (1) | CN121713321A (ko) |
| WO (1) | WO2026005151A1 (ko) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220165133A (ko) * | 2021-06-07 | 2022-12-14 | 주식회사 엘지에너지솔루션 | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
| JP2023012703A (ja) * | 2021-07-14 | 2023-01-26 | トヨタ自動車株式会社 | 電池および電池の製造方法 |
| US20230163406A1 (en) * | 2021-11-23 | 2023-05-25 | Polestar Performance Ab | Mechanical vent for battery pack |
| KR20230098080A (ko) * | 2021-12-24 | 2023-07-03 | 주식회사 엘지에너지솔루션 | 배터리 모듈 |
| KR20240074455A (ko) * | 2022-11-21 | 2024-05-28 | 주식회사 엘지에너지솔루션 | 화염 경로가 개선된 배터리 모듈 및 이를 포함하는 배터리 팩 |
| KR20240084812A (ko) | 2022-12-07 | 2024-06-14 | (재)대구기계부품연구원 | 환자 상태 감지 기능이 구비된 재활 운동 장치 |
-
2024
- 2024-06-27 KR KR1020240084812A patent/KR20260001403A/ko active Pending
- 2024-11-08 WO PCT/KR2024/017639 patent/WO2026005151A1/ko active Pending
- 2024-11-08 CN CN202480053122.9A patent/CN121713321A/zh active Pending
- 2024-11-08 EP EP24940936.8A patent/EP4712244A1/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20220165133A (ko) * | 2021-06-07 | 2022-12-14 | 주식회사 엘지에너지솔루션 | 배터리 모듈, 이를 포함하는 배터리 팩 및 자동차 |
| JP2023012703A (ja) * | 2021-07-14 | 2023-01-26 | トヨタ自動車株式会社 | 電池および電池の製造方法 |
| US20230163406A1 (en) * | 2021-11-23 | 2023-05-25 | Polestar Performance Ab | Mechanical vent for battery pack |
| KR20230098080A (ko) * | 2021-12-24 | 2023-07-03 | 주식회사 엘지에너지솔루션 | 배터리 모듈 |
| KR20240074455A (ko) * | 2022-11-21 | 2024-05-28 | 주식회사 엘지에너지솔루션 | 화염 경로가 개선된 배터리 모듈 및 이를 포함하는 배터리 팩 |
| KR20240084812A (ko) | 2022-12-07 | 2024-06-14 | (재)대구기계부품연구원 | 환자 상태 감지 기능이 구비된 재활 운동 장치 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN121713321A (zh) | 2026-03-20 |
| EP4712244A1 (en) | 2026-03-18 |
| KR20260001403A (ko) | 2026-01-05 |
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