WO2023146277A1 - 배터리 팩 및 이를 포함하는 자동차 - Google Patents
배터리 팩 및 이를 포함하는 자동차 Download PDFInfo
- Publication number
- WO2023146277A1 WO2023146277A1 PCT/KR2023/001145 KR2023001145W WO2023146277A1 WO 2023146277 A1 WO2023146277 A1 WO 2023146277A1 KR 2023001145 W KR2023001145 W KR 2023001145W WO 2023146277 A1 WO2023146277 A1 WO 2023146277A1
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- WO
- WIPO (PCT)
- Prior art keywords
- venting
- pack
- battery
- battery pack
- independent
- Prior art date
Links
- 238000013022 venting Methods 0.000 claims abstract description 183
- 230000004308 accommodation Effects 0.000 claims abstract description 15
- 238000005192 partition Methods 0.000 claims description 25
- 230000004888 barrier function Effects 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 description 78
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
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
-
- 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
-
- 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
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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 pack and a vehicle including the same, and more particularly, to a battery configured so that, when gas is generated inside a battery module, high-temperature gas can be discharged to the outside of the battery pack without affecting other adjacent battery modules. It relates to a pack and a vehicle including the same.
- a lithium secondary battery mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively.
- a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with such a positive electrode active material and a negative electrode active material are disposed with a separator therebetween, and an exterior material that seals and houses the electrode assembly together with an electrolyte, that is, a battery case.
- lithium secondary batteries can be classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of an exterior material.
- secondary batteries have been widely used for driving or energy storage not only in small devices such as portable electronic devices, but also in medium and large-sized devices such as electric vehicles and energy storage systems (ESSs). Many of these secondary batteries are stored together inside the module case while being electrically connected to form a single battery module, and these battery modules are electrically reconnected in a narrow space to increase energy density to form a battery pack. make up
- the present invention has been devised in consideration of the above problems, and high-temperature venting gas ejected when a thermal event occurs in some battery modules does not affect other battery modules inside the battery pack and safely outside the battery pack. Its purpose is to allow it to be discharged as
- one object is to control the flow of venting gas in a desired direction by adding an additional venting passage forming structure to an existing battery pack.
- a battery pack for achieving the above object includes a pack housing having a first accommodating space and a second accommodating space spaced apart from the first accommodating space; a plurality of first battery modules disposed in the first accommodating space; a plurality of second battery modules disposed in the second accommodating space; and a plurality of first independent venting passages configured to guide venting gas generated from each of the plurality of first battery modules to the outside of the pack housing, and venting gas generated from each of the plurality of second battery modules to the outside of the pack housing. It may include; a pack cover configured to have a plurality of second independent venting passages configured to guide.
- the plurality of first independent venting passages may include a first side venting passage for guiding the venting gas generated in each of the plurality of first battery modules in a first direction toward the second accommodating space; and a first center venting passage communicating with the first side venting passage and guiding the venting gas generated from each of the plurality of first battery modules in a second direction perpendicular to the first direction.
- the plurality of second independent venting passages may include second side venting passages for guiding venting gas generated from each of the plurality of second battery modules in a third direction toward the first accommodating space; and a second center venting passage communicating with the second side venting passage and guiding the venting gas generated from each of the plurality of second battery modules in a fourth direction perpendicular to the third direction.
- the pack cover may include guides provided at positions corresponding between the plurality of first independent venting passages adjacent to each other and positions corresponding between the plurality of second independent venting passages adjacent to each other.
- the guide part may be configured to block communication between the plurality of first independent venting passages adjacent to each other and communication between the plurality of second independent venting passages adjacent to each other.
- the pack cover may include guide units provided at positions corresponding between the plurality of first independent venting passages adjacent to each other and positions corresponding between the plurality of second independent venting passages adjacent to each other; a cover plate configured to cover an accommodation space of the pack housing; and flow passage covers provided at corresponding positions between the first accommodating space and the first center venting passage and between the second accommodating space and the second center venting passage and configured to seat the guide part.
- the first independent venting passage and the second independent venting passage may each have a groove shape formed on an inner surface of the cover plate.
- the battery pack may include first barrier ribs disposed at corresponding positions between the first battery modules adjacent to each other and corresponding positions between the second battery modules adjacent to each other.
- the battery pack may include a second partition wall disposed at a corresponding position between the first accommodating space and the second accommodating space.
- the first barrier rib may be configured to block movement of venting gas between accommodating spaces of each of the first battery modules adjacent to each other and movement of venting gas between accommodating spaces of each of the second battery modules adjacent to each other.
- the second barrier rib may be configured to block movement of venting gas between the first accommodating space and the second accommodating space.
- the battery pack may include a sealing member at least one of between the first barrier rib and the pack cover and between the first barrier rib and the pack housing.
- the pack housing may include a gas collecting space formed on at least one of one side and the other side.
- the battery pack may include a venting device configured to discharge venting gas from the gas collection space to the outside of the pack housing.
- a vehicle according to an embodiment of the present invention for achieving the above object includes a battery pack according to the present invention.
- high-temperature venting gas ejected when a thermal event occurs in some battery modules can be safely discharged to the outside of the battery pack without affecting other battery modules inside the battery pack.
- a function of controlling the flow of venting gas may be added by creating a venting passage in the pack cover, which is generally used only to cover the pack housing.
- the venting gas generated from each battery module may be discharged with a time difference by being discharged through venting passages having different lengths.
- the venting gas moves downward while the venting gas generated in each of the plurality of battery modules is discharged through the first center venting flow path and the second center venting flow path.
- the venting gas moves downward while the venting gas generated in each of the plurality of battery modules is discharged through the first center venting flow path and the second center venting flow path.
- the first partition wall and/or the second partition wall may have an approximate beam shape with an empty inner space, thereby improving the rigidity of the battery pack and blocking the movement of venting gas between adjacent accommodation spaces.
- the weight reduction effect of the battery pack can be obtained.
- the effect of preventing the venting gas from moving into the gap between the partition wall and the pack cover and/or the pack housing can be further improved.
- the internal pressure of the battery pack when the internal pressure of the battery pack increases due to the generation of a large amount of gas at once, the internal pressure of the battery pack can be rapidly reduced through the gas collecting space. Gas may be discharged in an intended direction through the venting device, and even if a large amount of venting gas is instantaneously generated by increasing the capacity or number of venting devices, the gas may be discharged more quickly and smoothly.
- FIG. 1 is an exploded perspective view showing a battery pack according to the present invention.
- FIG. 2 is a perspective view showing the appearance of a battery pack according to the present invention.
- 3 and 4 are diagrams illustrating a battery module included in a battery pack according to the present invention.
- 5 to 8 are diagrams showing a moving path of venting gas generated in each battery module included in the battery pack according to the present invention.
- FIGS. 9 and 10 are diagrams illustrating a pack cover included in a battery pack according to the present invention.
- FIG. 11 is an enlarged view of part B of FIG. 10 .
- FIG. 12 is a view showing a partition wall included in a battery pack according to the present invention.
- FIG. 13 is a cross-sectional view schematically showing an exemplary shape of a cross section taken along line AA′ of FIG. 2 .
- FIG. 14 is a view showing a collecting space and a venting device included in a battery pack according to the present invention.
- 15 is a view showing a vehicle according to the present invention.
- 1 is an exploded perspective view showing a battery pack according to the present invention.
- 2 is a perspective view showing the appearance of a battery pack according to the present invention.
- the battery pack 10 includes a pack housing 100, a first battery module 210, a second battery module 220, and a pack cover 300. .
- the pack housing 100 may include a first accommodating space 110 and a second accommodating space 120 spaced apart from the first accommodating space 110 .
- the accommodating space provided by the pack housing 100 is not limited to only the first accommodating space 110 and the second accommodating space 120 .
- the first battery module 210 may be disposed within the first accommodating space 110 .
- the number of first battery modules 210 may be plural.
- the second battery module 220 may be disposed within the second accommodating space 120 .
- the number of second battery modules 220 may be plural. For example, as shown in FIG. 1 , four first battery modules 210 may be disposed in the first accommodating space 110, and the second battery module 220 may be disposed in the second accommodating space 120. 4 can be placed.
- 3 and 4 are diagrams illustrating a battery module included in a battery pack according to the present invention.
- the battery module 200 may include battery cells 201 .
- a plurality of battery cells 201 may be provided.
- the battery cell 201 may mean a secondary battery.
- the battery cell 201 may include an electrode assembly, an electrolyte, a battery case accommodating the electrode assembly and the electrolyte, and a pair of electrode leads that are connected to the electrode assembly and lead out of the battery case.
- the battery cell 201 may be, for example, a pouch type secondary battery. However, other types of secondary batteries, such as cylindrical batteries or prismatic batteries, may also be employed as the battery cell 201 of the present invention.
- the battery module 200 may further include a bus bar frame assembly 202 for electrically connecting the plurality of battery cells 201 to each other.
- a pair of bus bar frame assemblies 202 may be provided, for example. In this case, each of the pair of bus bar frame assemblies 202 may be coupled to one side and the other side of the battery cell 201 in the longitudinal direction (direction parallel to the X axis).
- the battery module may further include a module case 203 .
- the module case 203 may be configured to accommodate at least one battery cell 201 .
- the module case 203 may have a venting hole 203a.
- the venting hole 203a may be configured to discharge the venting gas from the inside of the module case 203 to the outside when the venting gas is generated from the battery cell 201 accommodated in the internal space.
- 5 to 8 are diagrams showing a moving path of venting gas generated in each battery module included in the battery pack according to the present invention.
- the pack cover 300 may include a plurality of first independent venting passages 310 and a plurality of second independent venting passages 320 .
- the plurality of first independent venting passages 310 may be configured to guide venting gas generated from each of the plurality of first battery modules 210 to the outside of the pack housing 100 .
- the plurality of second independent venting passages 320 may be configured to guide venting gas generated from each of the plurality of second battery modules 220 to the outside of the pack housing 100 .
- the pack cover 300 may be combined with the pack housing 100 to form a venting passage between an upper portion of the battery module 200 and an inner surface of the pack cover 300 .
- Venting gas generated from each battery module may be discharged to the outside of the battery pack 10 through independent venting paths.
- the venting gas generated in each battery module may be discharged through a venting passage having a longer length as the venting gas generated in the battery module farther from the venting gas discharge location.
- a function of controlling the flow of venting gas may be added by creating a venting passage in the pack cover 300, which is only used for covering the pack housing 100 in general.
- flame and venting gas are formed between the upper part of the battery module and the inner surface of the pack cover 300. It can be discharged along the two independent venting passages 320, whereby the possibility of a thermal event spreading toward the adjacent battery module 200 can be significantly reduced.
- the temperature of the venting gas may drop while the venting gas moves, and even when a flame is generated together with the venting gas, the intensity of the flame may decrease while moving along the venting passage.
- the venting gas generated from each of the plurality of battery modules 200 may be discharged at a time difference by being discharged through venting passages having independent, different lengths so as not to communicate directly with each other.
- the first independent venting passage 310 may include a first side venting passage 311 and a first center venting passage 312 .
- the second independent venting passage 320 may include a second side venting passage 321 and a second center venting passage 322 .
- the first side venting passage 311 may guide the venting gas generated from each of the plurality of first battery modules 210 in a first direction (positive X-axis direction) toward the second accommodating space 120 .
- the second side venting passage 321 may guide the venting gas generated from each of the plurality of second battery modules 220 in a third direction (negative X-axis direction) toward the first accommodating space 110 .
- the first center venting passage 312 communicates with the first side venting passage 311 and controls the venting gas generated from each of the plurality of first battery modules 210 perpendicular to the first direction (the positive X-axis direction). It can be configured to guide in two directions (the positive Y-axis direction).
- the second center venting passage 322 communicates with the second side venting passage 321 and controls the venting gas generated from each of the plurality of second battery modules 220 perpendicular to the third direction (the negative X-axis direction). It can be configured to guide in 4 directions (the Y-axis negative direction).
- FIG. 9 and 10 are diagrams illustrating a pack cover included in a battery pack according to the present invention.
- FIG. 11 is an enlarged view of part B of FIG. 10 .
- the pack cover 300 may include a guide part 340 .
- the guide part 340 may be provided at a position corresponding between the plurality of first independent venting passages 310 adjacent to each other and at a position corresponding between the plurality of second independent venting passages 320 adjacent to each other.
- the guide part 340 may be configured to block communication between the plurality of first independent venting passages 310 adjacent to each other and communication between the plurality of second independent venting passages 320 adjacent to each other.
- the venting gas generated from each of the plurality of battery modules 200 can be discharged through mutually independent venting passages. Accordingly, when a thermal event occurs in each battery module, an effect on other battery modules may be minimized.
- the pack cover 300 may include a cover plate 330 and/or a flow path cover 350 .
- the cover plate 330 may be configured to cover the accommodation space of the pack housing 100 .
- a guide unit 340 may be coupled to an inner surface of the cover plate 330 .
- the first independent venting passage 310 and the second independent venting passage 320 may be spaces surrounded by the cover plate 330 and the guide part 340 .
- the first independent venting passage 310 and the second independent venting passage 320 may each have a groove G shape formed on the inner surface of the cover plate 330 .
- the shape of the groove G may be a first independent venting passage 310 and a second independent venting passage 320 .
- the passage cover 350 may be provided at corresponding positions between the first accommodating space 110 and the first center venting passage 312 and between the second accommodating space 120 and the second center venting passage 322 . there is.
- the flow path cover 350 may be configured such that the guide part 340 is seated.
- the flow path cover 350 may be coupled to the lower end of the guide part 340 .
- the first center venting passage 312 and the second center venting passage 322 may be spaces formed surrounded by the cover plate 330 , the guide part 340 , and the passage cover 350 .
- cover plate 330 the guide part 340, and the flow path cover 350 may be configured in an integrated form, and the present invention is not necessarily limited to the case where each member is separately manufactured and combined. .
- the venting gas generated from each of the plurality of battery modules 200 flows through the first independent venting passage 310 and the second independent venting passage in the remaining regions except for the region corresponding to the passage cover 350. (320).
- the venting gas generated in each of the plurality of battery modules 200 is discharged through the first center venting flow path 312 and the second center venting flow path 322. It is possible to prevent the gas from moving to the lower side and affecting other adjacent battery modules.
- FIG. 12 is a view showing a partition wall included in a battery pack according to the present invention.
- the battery pack 10 may include a first barrier rib 400a and/or a second barrier rib 400b.
- the first barrier rib 400a may be disposed at a corresponding position between adjacent first battery modules 210 and at a corresponding position between adjacent second battery modules 220 .
- the second partition wall 400b may be configured to block the movement of venting gas between the first accommodating space 110 and the second accommodating space 120 .
- the second partition wall 400b may be disposed at a corresponding position between the first accommodating space 110 and the second accommodating space 120 .
- the second partition wall 400b may be coupled to the pack cover 300 and/or the pack housing 100 . The coupling may be performed by welding or bolting.
- the second barrier rib 400b may have an approximate beam shape with an empty inside. An empty space formed in the second barrier rib 400b may be used as a passage through which wires connecting battery modules pass. The wiring may be protected from physical impact by the second barrier rib 400b.
- the accommodation spaces of the first battery modules 210 adjacent to each other and the accommodation spaces of the second battery modules 220 adjacent to each other may be structurally isolated from each other by the barrier rib. Accordingly, the venting gas generated in each battery module moves only through the first independent venting passage 310 and the second independent venting passage 320 without moving toward the adjacent battery module. During this movement, the temperature of the venting gas may decrease and the intensity of the flame may be weakened.
- the battery pack 10 When the first partition wall 400a and/or the second partition wall 400b have an approximate beam shape with an empty inner space, the battery pack 10 according to the application of the first partition wall 400a and/or the second partition wall 400b ), and an effect of blocking the movement of venting gas between adjacent accommodation spaces, an effect of reducing the weight of the battery pack 10 may be obtained.
- FIG. 13 is a cross-sectional view schematically showing an exemplary shape of a cross section taken along line AA′ of FIG. 2 .
- the battery pack 10 may include a sealing member 500 .
- the sealing member 500 may be provided in at least one of between the first partition wall 400a and the pack cover 300 and between the first partition wall 400a and the pack housing 100 .
- the sealing member 500 may be provided in at least one of between the second partition wall 400b and the pack cover 300 and between the second partition wall 400b and the pack housing 100 .
- the sealing member 500 may be configured to cover at least a portion of a coupling portion between the pack cover 300 and/or the pack housing 100 and the partition walls 400a and 400b.
- the effect of preventing the venting gas from moving into the gap between the pack cover 300 and/or the pack housing 100 and the partition walls 400a and 400b can be further improved.
- FIG. 14 is a view showing a collecting space and a venting device included in a battery pack according to the present invention.
- the battery pack 10 may include a gas collecting space 600 and/or a venting device 700 .
- the gas collection space 600 may be provided on at least one of one side and the other side of the pack housing 100 . Venting gas generated from each battery module moves through the first independent venting passage 310 and the second independent venting passage 320 and is gathered in the gas collecting space 600 .
- the gas collection space 600 may be provided at an end of the pack housing 100 in the longitudinal direction (Y-axis positive direction).
- the present invention is not limited to the shape, location, and number of gas collecting spaces 600 shown in FIG. 14 .
- the venting device 700 may be configured to discharge the venting gas in the gas collecting space 600 to the outside of the pack housing 100 .
- the venting device 700 may have a simple hole shape penetrating the pack housing 100 .
- it may be a specific device that is not completely open, but is closed in a normal state and can be opened according to a change in pressure or temperature, as well as a completely open form.
- the venting device 700 may be, for example, a one-way valve.
- the internal pressure of the battery pack 10 when the internal pressure of the battery pack 10 increases due to the generation of a large amount of gas at once, the internal pressure of the battery pack 10 can be quickly reduced through the gas collecting space 600 . Gas can be discharged in an intended direction through the venting device 700, and even if a large amount of venting gas is instantaneously generated by increasing the capacity or number of venting devices 700 that can be processed, more rapid and smooth gas discharge may be possible.
- 15 is a view showing a vehicle according to the present invention.
- the battery pack 10 may be applied to a vehicle 1 such as an electric vehicle 1 or a hybrid vehicle 1. That is, the vehicle 1 according to the present invention may include the battery pack 10 according to the present invention. In addition, the vehicle 1 according to the present invention may further include various other components included in the vehicle 1 in addition to the battery pack 10 .
- the automobile 1 according to the present invention may further include a control device such as a vehicle body, a motor, and an electronic control unit (ECU), in addition to the battery pack 10 according to the present invention.
- ECU electronice control unit
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (15)
- 제1 수용 공간, 상기 제1 수용 공간과 이격되어 위치하는 제2 수용 공간을 구비하는 팩 하우징;상기 제1 수용 공간 내에 배치되는 복수의 제1 배터리 모듈;상기 제2 수용 공간 내에 배치되는 복수의 제2 배터리 모듈; 및상기 복수의 제1 배터리 모듈 각각에서 발생되는 벤팅 가스를 상기 팩 하우징 외부로 가이드하도록 구성되는 복수의 제1 독립 벤팅 유로 및 상기 복수의 제2 배터리 모듈 각각에서 발생되는 벤팅 가스를 상기 팩 하우징 외부로 가이드하도록 구성되는 복수의 제2 독립 벤팅 유로를 구비하도록 구성되는 팩 커버; 를 포함하는 배터리 팩.
- 제1 항에 있어서,상기 복수의 제1 독립 벤팅 유로는,상기 복수의 제1 배터리 모듈 각각에서 발생되는 벤팅 가스를 상기 제2 수용 공간을 향하는 제1 방향으로 가이드하는 제1 사이드 벤팅 유로; 및상기 제1 사이드 벤팅 유로와 연통되며 상기 복수의 제1 배터리 모듈 각각에서 발생되는 벤팅 가스를 상기 제1 방향과 수직한 제2 방향으로 가이드하는 제1 센터 벤팅 유로;를 포함하는 것을 특징으로 하는 배터리 팩.
- 제2 항에 있어서,상기 복수의 제2 독립 벤팅 유로는,상기 복수의 제2 배터리 모듈 각각에서 발생되는 벤팅 가스를 상기 제1 수용 공간을 향하는 제3 방향으로 가이드하는 제2 사이드 벤팅 유로; 및상기 제2 사이드 벤팅 유로와 연통되며 상기 복수의 제2 배터리 모듈 각각에서 발생되는 벤팅 가스를 상기 제3 방향과 수직한 제4 방향으로 가이드하는 제2 센터 벤팅 유로;를 포함하는 것을 특징으로 하는 배터리 팩.
- 제1 항에 있어서,상기 팩 커버는,서로 인접하는 상기 복수의 제1 독립 벤팅 유로 사이에 대응되는 위치 및 서로 인접한 상기 복수의 제2 독립 벤팅 유로 사이에 대응되는 위치 각각에 구비되는 가이드부를 구비하는 것을 특징으로 하는 배터리 팩.
- 제4 항에 있어서,상기 가이드부는,서로 인접하는 상기 복수의 제1 독립 벤팅 유로 사이의 연통 및 서로 인접하는 상기 복수의 제2 독립 벤팅 유로 사이의 연통을 차단하도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제3 항에 있어서,상기 팩 커버는,서로 인접하는 상기 복수의 제1 독립 벤팅 유로 사이에 대응되는 위치 및 서로 인접한 상기 복수의 제2 독립 벤팅 유로 사이에 대응되는 위치 각각에 구비되는 가이드부;상기 팩 하우징의 수용 공간을 커버하도록 구성된 커버 플레이트; 및상기 제1 수용 공간과 제1 센터 벤팅 유로 사이 및 상기 제2 수용 공간과 제2 센터 벤팅 유로 사이에 대응되는 위치 각각에 구비되며 상기 가이드부가 안착되도록 구성되는 유로 커버;를 포함하는 것을 특징으로 하는 배터리 팩.
- 제6 항에 있어서,상기 제1 독립 벤팅 유로 및 상기 제2 독립 벤팅 유로는 각각 상기 커버 플레이트의 내측 면 상에 형성된 홈 형태를 갖는 것을 특징으로 하는 배터리 팩.
- 제1 항에 있어서,상기 배터리 팩은,서로 인접한 상기 제1 배터리 모듈 사이에 대응되는 위치 및 서로 인접한 상기 제2 배터리 모듈 사이에 대응되는 위치 각각에 배치되는 제1 격벽을 구비하는 것을 특징으로 하는 배터리 팩.
- 제1 항에 있어서,상기 배터리 팩은,상기 제1 수용 공간과 상기 제2 수용 공간 사이에 대응되는 위치에 배치되는 제2 격벽을 구비하는 것을 특징으로 하는 배터리 팩.
- 제8 항에 있어서,상기 제1 격벽은,서로 인접한 상기 제1 배터리 모듈 각각의 수용 공간 사이에서의 벤팅 가스의 이동 및 서로 인접한 상기 제2 배터리 모듈 각각의 수용 공간 사이에서의 벤팅 가스의 이동을 차단하도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제9 항에 있어서,상기 제2 격벽은,상기 제1 수용 공간과 상기 제2 수용 공간 사이에서의 벤팅 가스의 이동을 차단하도록 구성되는 것을 특징으로 하는 배터리 팩.
- 제8항에 있어서,상기 배터리 팩은,상기 제1 격벽과 상기 팩 커버 사이 및 상기 제1 격벽과 상기 팩 하우징 사이 중 적어도 어느 한 곳에 실링 부재를 구비하는 것을 특징으로 하는 배터리 팩.
- 제1 항에 있어서,상기 팩 하우징은,일 측 및 타 측 중 적어도 어느 한 곳에 형성되는 가스 포집 공간을 구비하는 것을 특징으로 하는 배터리 팩.
- 제13 항에 있어서,상기 배터리 팩은,상기 가스 포집 공간의 벤팅가스를 상기 팩 하우징 외부로 배출시킬 수 있도록 구성되는 벤팅 디바이스를 구비하는 것을 특징으로 하는 배터리 팩.
- 제1 항 내지 제14 항 중 어느 한 항에 따른 배터리 팩을 포함하는 자동차.
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