WO2023158139A1 - 내부 공간 구획을 위한 가림막을 적용한 배터리 모듈 및 이를 포함하는 배터리 팩 - Google Patents
내부 공간 구획을 위한 가림막을 적용한 배터리 모듈 및 이를 포함하는 배터리 팩 Download PDFInfo
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- WO2023158139A1 WO2023158139A1 PCT/KR2023/001614 KR2023001614W WO2023158139A1 WO 2023158139 A1 WO2023158139 A1 WO 2023158139A1 KR 2023001614 W KR2023001614 W KR 2023001614W WO 2023158139 A1 WO2023158139 A1 WO 2023158139A1
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- WIPO (PCT)
- Prior art keywords
- battery module
- battery
- cell assembly
- fitting plate
- assembly
- Prior art date
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- 238000005192 partition Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 description 17
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 6
- 229910052744 lithium Inorganic materials 0.000 description 6
- 238000013022 venting Methods 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000003111 delayed effect Effects 0.000 description 4
- 230000003685 thermal hair damage Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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- 239000010949 copper Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 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
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- 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
- 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or 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
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
-
- 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 module, and more specifically, to a chain of battery cells by preventing combustion discharge, flame, heat, etc. generated from ignited battery cells from being easily transferred to other battery cells when the battery module internally ignites. It relates to a battery module for maximally delaying ignition.
- Secondary batteries are attracting attention as a new energy source for improving eco-friendliness and energy efficiency in that they do not generate any by-products due to the use of energy as well as the primary advantage of dramatically reducing the use of fossil fuels.
- secondary batteries Accordingly, the application of secondary batteries to various devices is increasing. For example, it is widely used as an energy source for wireless mobile devices or wearable devices, which are multifunctional small products, as well as electric vehicles and hybrid vehicles that are presented as alternatives to conventional gasoline and diesel vehicles. It is also used as an energy source for electric vehicles or as an energy storage system (ESS).
- ESS energy storage system
- Lithium secondary batteries which have been widely used recently, have an operating voltage of about 2.5V to 4.5V per battery. Therefore, in the case of an electric vehicle or power storage device requiring large capacity and high output, a battery module in which a plurality of lithium secondary batteries are connected in series and / or parallel, and a battery pack in which the battery modules are connected in series and / or parallel are configured, and this use as an energy source
- the number of lithium secondary batteries included in one battery module or the number of battery modules included in one battery pack may increase.
- venting gas when an event such as a short circuit between lithium secondary batteries or an abnormal temperature rise occurs in some battery modules, a large amount of venting gas may be generated from the lithium secondary batteries, and when the deterioration intensifies, the venting gas and the electrode active material and aluminum High-temperature sparks containing particles and the like may be ejected. At this time, the venting gas and the high-temperature spark cause thermal damage to other secondary batteries adjacent to it, and because of this, if an additional event occurs to other secondary batteries, the battery module is explosively engulfed in flames, which reduces the time for users to evacuate. not being able to secure enough.
- the present invention was devised in consideration of the above problems, and when a specific battery cell of a battery module ignites, combustion discharge, flame, heat, etc. generated from the specific battery cells are not easily transferred to other battery cells.
- An object of the present invention is to provide a battery module capable of maximally delaying chain ignition of battery cells.
- a battery module includes a cell assembly having a cell stack composed of a plurality of battery cells stacked in one direction; a module case accommodating the cell assembly therein; and a shielding unit provided to partition an inner space formed between one side surface of the cell assembly where the electrode leads of the battery cells are located and one side surface of the module case facing therefrom into left and right sides.
- the shield unit may include: a screen plate having a width corresponding to the distance between the one side surface of the cell assembly and the one side surface of the module case and a height corresponding to the height of the one side surface of the cell assembly; and an upper fitting plate part extending by a predetermined length from an upper end of the cover plate part in a direction crossing the cover plate part, and a lower fitting plate part extending by a predetermined length from the lower end of the cover plate part.
- the covering plate part may be disposed in the inner space, and the upper fitting plate part and the lower fitting plate part may be disposed to contact upper and lower ends of the cell stack.
- the cell assembly has lead slots through which electrode leads of the battery cells pass, is provided in a plate shape covering the front or rear of the cell stack, and is a bus bar frame forming one side surface of the cell assembly. ; and a plurality of bus bars disposed on the bus bar frame in the same direction as the stacking direction of the battery cells and electrically connected to the electrode leads.
- the bus bar frame may include a frame groove portion provided to insert a corner portion of one side of the screen portion in the width direction between a predetermined bus bar among the plurality of bus bars and an adjacent bus bar.
- the module case includes a case body having an open end and having a hollow shape so that the cell assembly can be inserted therein along a longitudinal direction; and a case cover facing one side surface of the cell assembly and coupled to the open end of the case body.
- the case body may be configured such that the cell assembly is press-fitted in a longitudinal direction.
- the case body is provided on an inner surface of the upper plate, and extends from the open end in a longitudinal direction and includes a first assembly guide groove formed to correspond to the width and thickness of the upper fitting plate; and a second assembly guide groove provided on an inner surface of the lower plate, extending in a longitudinal direction from the open end portion, and formed to correspond to the width and thickness of the lower fitting plate portion.
- the cover unit may be configured such that the upper fitting plate part and the lower fitting plate part are slidably coupled to the first assembly guide groove part and the second assembly guide groove part, respectively.
- the case cover includes a cover body contacting the other edge portion in the width direction of the covering plate part; an upper end of the cover formed with a third assembly guide groove that is slidably coupled to an end of the upper fitting plate; and a lower end of the cover formed with a fourth assembly guide groove that is slidably coupled to an end of the lower fitting plate.
- the upper fitting plate part may have a width extending in a first direction based on the covering plate part, and the lower fitting plate part may have a width extending in a direction opposite to the first direction.
- a plurality of the shield units may be spaced apart from each other along the stacking direction of the battery cells in the cell assembly.
- the covering unit may be detachably provided from the cell assembly.
- a battery pack including one or more of the battery modules described above may be provided.
- a vehicle including the battery pack may be provided.
- a battery module capable of maximizing delay may be provided.
- the remaining space inside the battery module (the space between the cell assembly and the case cover) through which heat, venting gas, high-temperature particle particles, flame, etc. generated when a specific battery cell is ignited can move. It is partitioned into units. Heat, high-temperature particle particles, flames, etc., generated from a battery cell that is blocked by such a shielding unit are not easily transferred to other battery cells nearby, so that chain ignition or explosion of battery cells can be prevented or delayed as much as possible.
- FIG. 1 is a schematic perspective view of a battery module according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view of main components of the battery module of FIG. 1 .
- FIG. 3 is a schematic perspective view of the shielding unit of FIG. 2 .
- FIG. 4 is a view schematically showing an assembly example of a case body and a shielding unit according to an embodiment of the present invention.
- FIG. 5 is a schematic longitudinal cross-sectional view of a portion of a battery module according to an embodiment of the present invention.
- FIG. 6 is a schematic cross-sectional view of a portion of a battery module according to an embodiment of the present invention.
- FIG. 7 is a front view of a cell assembly equipped with a shield unit according to an embodiment of the present invention.
- FIG. 8 is a perspective view showing a portion of a cell assembly to which a shielding unit according to another embodiment of the present invention is mounted.
- FIG. 9 is a view corresponding to FIG. 8 as a configuration of a battery module according to another embodiment of the present invention.
- FIG. 10 is a perspective view showing the main configuration of a battery module according to another embodiment of the present invention.
- FIG. 1 is a schematic perspective view of a battery module according to an embodiment of the present invention
- FIG. 2 is an exploded perspective view of main components of the battery module of FIG. 1
- FIG. 3 is a schematic perspective view of a shielding unit of FIG. 2 .
- the battery module 10 includes a cell assembly 100, a module case 200, and a shield unit 300.
- the shield unit 300 partitions and separates the remaining internal space (see S1 and S2 in FIG. 6) inside the battery module 10, so that the battery module ( 10)
- the shield unit 300 partitions and separates the remaining internal space (see S1 and S2 in FIG. 6) inside the battery module 10, so that the battery module ( 10)
- the sequential ignition of the battery cells 111 may be delayed as much as possible during internal ignition.
- the cell assembly 100 which is one of the main components of the battery module 10, the cell assembly 100 includes a cell stack 110, a bus bar frame 120, and a plurality of bus bars 130. ).
- the cell stack 110 is an assembly of battery cells 111 formed by stacking a plurality of battery cells 111 . That is, as shown in FIG. 2 , the cell stack 110 may be composed of a plurality of pouch-type battery cells 111 stacked in one direction (X direction) with their wide sides erected.
- the pouch type battery cell 111 includes an electrode assembly, a pouch case accommodating the electrode assembly, and a pair of electrode leads 112 connected to the electrode assembly and pulled out to the outside of the pouch case to function as electrode terminals. .
- the pair of electrode leads 112 are pulled out in opposite directions in the longitudinal direction ( ⁇ Y direction) of the battery cell 111 .
- the pouch type battery cell 111 may have a form in which the electrode lead 112 is located only at one end in the Y-axis direction, for example, at an end in the +Y-axis direction.
- the present invention is not limited by the specific type or form of the battery cell 111, and various battery cells 111 known at the time of filing the present invention are employed to construct the cell stack 110 of the present invention. It can be.
- the bus bar frame 120 can be injection molded from an electrically insulating material and is provided in the form of a plate body of a size capable of covering the front (+Y direction) or the rear (-Y direction) of the cell stack 110. . Accordingly, in this embodiment, one side surface of the cell assembly 100 may be configured in a form in which the bus bar frame 120 is mounted on the front or rear of the cell stack 110 .
- the bus bar frame 120 includes a plurality of lead slots 122 through which the electrode leads 112 of the pouch type battery cells 111 pass in the +Y axis or -Y axis direction.
- the plurality of lead slots 122 may be provided along the stacking direction (X direction) of the battery cells 111 .
- the bus bar frame 120 of this embodiment is configured to fix a plurality of bus bars 130, and although not shown, additional components such as connectors or other printed circuit boards (PCBs) in the space above the bus bars 130 and may be configured to have a support plate 121 for supporting and fixing the additional parts.
- PCBs printed circuit boards
- the bus bar frame 120 will be described later between a predetermined bus bar 130 among a plurality of bus bars 130 and a bus bar 130 adjacent thereto.
- a frame groove 123 into which the covering plate 310 of the covering unit 300 may be partially inserted may be provided. That is, the frame groove portion 123 may be configured such that the corner portion 310a on one side of the cover plate portion 310 in the width direction (-Y direction) can be inserted by a predetermined depth.
- the support plate 121 has a cutout 121a so that the protruding support plate 121 does not interfere. ) is provided.
- the plurality of bus bars 130 are made of an electrically conductive material such as copper, aluminum, nickel, etc., and electrode leads 112 of a predetermined number of battery cells 111 are welded to the surface of the predetermined bus bar 130. Fixed and electrically connected.
- the bus bars 130 of this embodiment are provided in a rectangular bar shape with a hole in the middle so that the electrode lead 112 can pass through, and the open part communicates with the lead slot 122 of the bus bar frame 120. It is placed on the bar frame 120.
- the bus bars 130 are disposed on the bus bar frame 120 along the same direction as the stacking direction of the battery cells 111 .
- Certain battery cells 111 are pulled out in front of the bus bar 130 by passing the bus bar frame 120 back and forth through the lead slot 122 at the corresponding position with the electrode leads 112 overlapping, and the drawn out part is It may be bent and welded to be fixed to the surface of the bus bar 130 .
- the module case 200 is a component for protecting the cell assembly 100 from external impact, and may be preferably made of a material having excellent mechanical strength. As shown in FIGS. 1 and 2 , the module case 200 according to this embodiment includes a case body 210 and a case cover 220 .
- the case body 210 has an open end portion O with both ends open in the longitudinal direction and has a rectangular tube shape made of a hollow structure with an empty inside so that the cell assembly 100 can be inserted into the inside along the longitudinal direction. can be provided. That is, the case body 210 may be configured to allow the cell assembly 100 to be inserted therein in a sliding or force-fitting manner.
- the case body 210 is provided on the inner surface of the top plate 211 and extends along the longitudinal direction (Y direction) from the open end portion O, and is fitted at the top of the shield unit 300 to be described later
- the first assembly guide groove 211a formed to correspond to the width and thickness of the plate portion 320 and the shielding unit provided on the inner surface of the lower plate 212 and extending in the longitudinal direction from the open end portion O and described later ( 300) includes a second assembly guide groove portion 212a formed to correspond to the width and thickness of the lower fitting plate portion 330.
- the gap between the upper end of the cell stack 110 and the upper plate 211 of the case body 210, and between the lower end of the cell stack 110 and the case body 210 It may be configured so that a gap hardly occurs between the lower plates 212 of the. A more detailed description of this will be described later.
- the case cover 220 is a side portion of the cell assembly 100 where the electrode leads 112 of the battery cells 111 are located, that is, the electrode leads 112 are fixed to the bus bars 130 on the bus bar frame 120. In order to prevent the highly connected part from being exposed to the outside, it may be provided so as to face one side surface of the cell assembly 100 and be coupled to the open end O of the case body 210 .
- the case cover 220 may be configured such that, for example, an inner portion is made of an insulating material and an outer portion is made of a metal material, and is fixedly coupled to the case body 210 by welding.
- case cover 220 is a third assembly that is slidably coupled with the cover body 221 in contact with the other corner portion 310b in the width direction of the cover plate portion 310 and the end of the upper fitting plate portion 320 It includes an upper end 222 of the cover having a guide groove 222a and a lower end 223 of the cover having a fourth assembly guide groove 223a slidably coupled to the end of the lower fitting plate 330 .
- the third assembly guide groove part 222a and the fourth assembly guide groove part 223a are coaxial with the first assembly guide groove part 211a and the second assembly guide groove part 212a (see FIG. 2), respectively.
- the other side edge 310b in the width direction of the cover plate portion 310 of the cover unit 300, which is formed and will be described later, may contact one surface of the cover body 221 and prevent it from flowing in that state.
- case cover 220 may be partially provided with holes or slits to expose parts that need to be exposed to the outside, such as the positive and negative terminals or connectors of the battery module 10. .
- the shielding unit 300 is a component for left and right partitioning of an internal space formed between one side surface of the cell assembly 100 and one side surface of the module case 200 facing the cell assembly 100, and the inside of the battery module 10 During ignition, it serves to partition the internal space so that heat generated from the ignited battery cell 111, high-temperature particle particles, flame, etc. are not propagated to other battery cells 111 through the internal space.
- the covering unit 300 is a material having low thermal conductivity and excellent heat resistance (ex: silicone, mica), and as shown in FIGS. It includes the fitting plate part 320 and the bottom fitting plate part 330 and is provided in an approximately ⁇ shape to be detachably attached to the cell assembly 100 .
- the cover plate part 310 is disposed in the inner space and has a width (D in FIG. 3) corresponding to a distance at which one side surface of the cell assembly 100 and one side surface of the module case 200 face each other and the cell assembly ( 100) may be provided to have a height corresponding to the height of one side portion.
- one side of the cell assembly 100 is the bus bar frame 120 and one side of the module case 200 is the case cover 220 .
- the upper fitting plate part 320 is provided in the form of a plate extending by a predetermined length from the upper end of the covering plate part 310 in a direction crossing the covering plate part 310, and the lower fitting plate part 330 is the covering plate part It is provided in the form of a plate extending by a predetermined length in the same direction as the upper fitting plate portion 320 at the lower end of 310.
- the shield unit 300 pushes the upper fitting plate part 320 and the lower fitting plate part 330 into the cell assembly 100 so as to contact the upper and lower ends of the cell stack 110, It may be mounted on the cell assembly 100.
- one corner portion 310a of the cover plate portion 310 is fitted into the frame groove portion 123 of the bus bar frame 120 described above, and the upper fitting plate portion 320 and the lower fitting plate portion 330 are the cell It is configured to slightly press the upper and lower ends of the laminate 110, so that the shield unit 300 can be well fixed to the cell assembly 100.
- cover unit 300 is configured so that the upper fitting plate portion 320 and the lower fitting plate portion 330 are slidably coupled to the first assembly guide groove portion 211a and the second assembly guide groove portion 212a, respectively It can be.
- the thickness and width of the upper fitting plate part 320 coincide with the first assembly guide groove part 211a
- the thickness and width of the lower fitting plate part 330 correspond to the second assembly guide groove part ( 212a)
- the upper fitting plate part 320 and the lower fitting plate part 330 are slidably coupled to the first assembly guide groove part 211a and the second assembly guide groove part 212a, respectively.
- the case body 210 and the cell assembly 100 can be easily inserted, and after insertion, the top of the cell stack 110 and the case body There is no gap between the upper plate 211 of the 210 and between the lower end of the cell stack 110 and the lower plate 212 of the case body 210 .
- the cover unit 300 may not be rotated or twisted.
- the upper fitting plate part 320 and the lower fitting plate part 330 are slide-coupled to the first assembly guide groove part 211a and the second assembly guide groove part 212a of the case body 210, and the remaining part is the case cover. It may be configured to be slidably coupled to the third assembly guide groove portion 222a and the fourth assembly guide groove portion 223a formed in the 220 .
- the cover plate part 310 may be configured to vertically contact the inner surface of the case cover (220). According to the configuration described above, the shielding unit 300 of the present embodiment may have enhanced fixation while contacting the case cover 220 .
- FIG. 5 is a schematic longitudinal cross-sectional view of a portion of the battery module 10 according to an embodiment of the present invention
- FIG. 6 is a schematic cross-sectional view of a portion of the battery module 10 according to an embodiment of the present invention.
- a cross-sectional view, and FIG. 7 is a front view of the cell assembly 100 to which the shielding unit 300 according to an embodiment of the present invention is mounted.
- the user of the battery module 10 can recognize this before the fire spreads when the battery module 10 internally ignites, and can evacuate in a safer situation or take measures to extinguish the fire.
- FIG. 8 is a perspective view showing a portion of the cell assembly 100 to which the shield unit 300 according to another embodiment of the present invention is mounted
- FIG. 9 is a configuration of a battery module according to another embodiment of the present invention, It is a view corresponding to FIG. 8, and
- FIG. 10 is a perspective view showing the main configuration of a battery module according to another embodiment of the present invention.
- the upper fitting plate portion 320 of the covering unit 300 based on the covering plate portion 310 has a width in the first direction (-X direction)
- the lower fitting plate portion 330 has a difference in that the width is formed in the direction opposite to the first direction (+X direction). That is, as shown in FIG. 8 , the upper fitting plate part 320 and the lower fitting plate part 330 of the covering unit 300 have opposite widths, so that the covering unit 300 is implemented in a substantially 'Z' shape.
- the battery module is configured such that a plurality of shield units 300 are spaced apart from each other in the cell assembly 100 along the stacking direction (X direction) of the battery cells 111 .
- another battery module 10 of the present invention is a module case facing one side of the cell assembly 100 by three shield units 300A, 300B, and 300C.
- the inner space formed between (200) can be partitioned into four spaces.
- the upper fitting plate part 320 and the lower fitting plate part 330 have an extended width and length compared to the above-described embodiment. 300D).
- the length of the upper fitting plate part 320 and the lower fitting plate part 330 of the shield unit 300D corresponds to the length of the cell stack 110, and the width thereof corresponds to the cell stack 110
- the shielding plate portion 310 of the cell stack 110 of the left side or the right side can be configured to be formed to be expanded enough to cover all.
- the upper and lower ends of the cell stack 110 are covered by the upper fitting plate portion 320 and the lower fitting plate portion 330, when an event occurs in an arbitrary battery cell 111, the arbitrary battery cell 111 There is an effect that can more reliably block heat, high-temperature particle particles, flames, etc. generated from propagation to other battery cells 111 through the top or bottom side of the cell stack 110.
- a battery pack (not shown) according to the present invention may include one or more battery modules described above.
- the battery pack according to the present invention may further include a master battery management system (BMS) for integrally controlling charging and discharging of one or more battery modules, a current sensor, a fuse, and a pack case for accommodating the aforementioned components.
- BMS master battery management system
- the battery pack according to the present invention can be applied to an energy storage device or to a vehicle such as an electric scooter, an electric vehicle or a hybrid vehicle.
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
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- Aviation & Aerospace Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (15)
- 일 방향으로 적층된 복수 개의 배터리 셀들로 이루어진 셀 적층체를 구비한 셀 어셈블리;상기 셀 어셈블리를 내부에 수용하는 모듈 케이스; 및상기 배터리 셀들의 전극 리드들이 위치한 상기 셀 어셈블리의 일측면부와 그와 마주하는 상기 모듈 케이스의 일측면부 사이에 형성되는 내부 공간을 좌우로 구획하도록 마련된 가림막 유닛을 포함하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 가림막 유닛은,상기 셀 어셈블리의 일측면부와 상기 모듈 케이스의 일측면부가 서로 마주하는 거리에 대응하는 너비와 상기 셀 어셈블리의 일측면부의 높이에 대응하는 높이를 갖는 가림판부; 및상기 가림판부와 교차하는 방향으로 상기 가림판부의 상단에서 소정 길이만큼 연장된 상단 끼움판부와, 상기 가림판부의 하단에서 소정 길이만큼 연장된 하단 끼움판부를 구비하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 가림판부는 상기 내부 공간에 배치되고,상기 상단 끼움판부와 상기 하단 끼움판부는 상기 셀 적층체의 상단과 하단에 접촉하도록 배치된 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 셀 어셈블리는,상기 배터리 셀들의 전극 리드들을 통과시킬 수 있는 리드 슬롯들을 구비하고 상기 셀 적층체의 전방 또는 후방을 커버하는 판상체 형태로 마련되며 상기 셀 어셈블리의 일측면부를 형성하는 버스바 프레임; 및상기 배터리 셀들의 적층 방향과 같은 방향을 따라 상기 버스바 프레임에 배치되고 상기 전극 리드들과 전기적으로 연결되는 복수 개의 버스바들을 더 포함하는 것을 특징으로 하는 배터리 모듈.
- 제4항에 있어서,상기 버스바 프레임은상기 복수 개의 버스바들 중 미리 정해진 버스바와 그와 이웃한 버스바 사이에 상기 가림판부의 너비 방향 일측 모서리 부분을 삽입할 수 있게 마련된 프레임 홈부를 구비하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 모듈 케이스는,개방단부를 구비하고 중공 형상으로 마련되어 상기 셀 어셈블리를 길이 방향을 따라 내부에 삽입시킬 수 있게 마련된 케이스 본체; 및상기 셀 어셈블리의 일측면부와 마주하며 상기 케이스 본체의 상기 개방단부에 결합되는 케이스 커버를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제6항에 있어서,상기 케이스 본체는 상기 셀 어셈블리가 길이 방향으로 억지 끼움되도록 구성된 것을 특징으로 하는 배터리 모듈.
- 제6항에 있어서,상기 케이스 본체는상판 내측면에 마련되며, 상기 개방단부로부터 길이 방향을 따라 연장되고 상기 상단 끼움판부의 너비와 두께에 대응하도록 형성된 제1 조립 가이드 홈부; 및하판 내측면에 마련되며, 상기 개방단부로부터 길이 방향을 따라 연장되고 상기 하단 끼움판부의 너비와 두께에 대응하도록 형성된 제2 조립 가이드 홈부를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제8항에 있어서,상기 가림막 유닛은상기 상단 끼움판부와 상기 하단 끼움판부가 각각 상기 제1 조립 가이드 홈부와 상기 제2 조립 가이드 홈부에 슬라이드 결합되도록 구성된 것을 특징으로 하는 배터리 모듈.
- 제6항에 있어서,상기 케이스 커버는상기 가림판부의 너비 방향 타측 모서리 부분과 접촉하는 커버 본체;상기 상단 끼움판부의 단부와 슬라이드 결합되는 제3 조립 가이드 홈부가 형성된 커버 상단; 및상기 하단 끼움판부의 단부와 슬라이드 결합되는 제4 조립 가이드 홈부가 형성된 커버 하단을 포함하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 가림막 유닛은,상기 가림판부를 기준으로 상기 상단 끼움판부는 너비가 제1 방향으로 확장 형성되고, 상기 하단 끼움판부는 너비가 상기 제1 방향의 반대 방향으로 확장 형성된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 가림막 유닛은 상기 셀 어셈블리에 상기 배터리 셀들의 적층 방향을 따라 복수 개가 이격 배치되는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 가림막 유닛은 상기 셀 어셈블리에 탈부착 가능하게 마련된 것을 특징으로 하는 배터리 모듈.
- 제1항 내지 제13항 중 어느 한 항에 따른 배터리 모듈을 포함하는 것을 특징으로 하는 배터리 팩.
- 제14항에 따른 배터리 팩을 포함하는 것을 특징으로 하는 자동차.
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EP23756552.8A EP4354622A1 (en) | 2022-02-18 | 2023-02-03 | Battery module with screen for inner space division and battery pack including same |
CN202380011202.3A CN117203839A (zh) | 2022-02-18 | 2023-02-03 | 具有用于内部空间划分的屏障的电池模块和包括该电池模块的电池组 |
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Citations (6)
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CN110739413A (zh) * | 2019-09-30 | 2020-01-31 | 深圳君耀投资合伙企业(有限合伙) | 一种阻燃隔热电池及电池模组 |
CN111463510A (zh) * | 2020-04-14 | 2020-07-28 | 上海豫源电力科技有限公司 | 软包电池模组及其制造方法 |
KR20200107213A (ko) * | 2019-03-06 | 2020-09-16 | 주식회사 엘지화학 | 화염의 외부 노출을 방지할 수 있는 구조를 갖는 ess 모듈 및 이를 포함하는 배터리 팩 |
CN213878330U (zh) * | 2020-12-03 | 2021-08-03 | 天津市捷威动力工业有限公司 | 一种模组热失控定向排气机构 |
KR20220017741A (ko) * | 2020-08-05 | 2022-02-14 | 주식회사 엘지에너지솔루션 | 셀 스웰링을 흡수할 수 있는 구조를 갖는 배터리 모듈, 그리고 이를 포함하는 배터리 팩 및 자동차 |
KR20220021342A (ko) | 2020-08-13 | 2022-02-22 | 양동진 | 엄지가 불편한 사람들을 위한 젓가락 |
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- 2023-02-03 WO PCT/KR2023/001614 patent/WO2023158139A1/ko active Application Filing
- 2023-02-03 EP EP23756552.8A patent/EP4354622A1/en active Pending
- 2023-02-03 CN CN202380011202.3A patent/CN117203839A/zh active Pending
Patent Citations (6)
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KR20200107213A (ko) * | 2019-03-06 | 2020-09-16 | 주식회사 엘지화학 | 화염의 외부 노출을 방지할 수 있는 구조를 갖는 ess 모듈 및 이를 포함하는 배터리 팩 |
CN110739413A (zh) * | 2019-09-30 | 2020-01-31 | 深圳君耀投资合伙企业(有限合伙) | 一种阻燃隔热电池及电池模组 |
CN111463510A (zh) * | 2020-04-14 | 2020-07-28 | 上海豫源电力科技有限公司 | 软包电池模组及其制造方法 |
KR20220017741A (ko) * | 2020-08-05 | 2022-02-14 | 주식회사 엘지에너지솔루션 | 셀 스웰링을 흡수할 수 있는 구조를 갖는 배터리 모듈, 그리고 이를 포함하는 배터리 팩 및 자동차 |
KR20220021342A (ko) | 2020-08-13 | 2022-02-22 | 양동진 | 엄지가 불편한 사람들을 위한 젓가락 |
CN213878330U (zh) * | 2020-12-03 | 2021-08-03 | 天津市捷威动力工业有限公司 | 一种模组热失控定向排气机构 |
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CN117203839A (zh) | 2023-12-08 |
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