WO2023096193A1 - 전지 모듈 - Google Patents
전지 모듈 Download PDFInfo
- Publication number
- WO2023096193A1 WO2023096193A1 PCT/KR2022/016837 KR2022016837W WO2023096193A1 WO 2023096193 A1 WO2023096193 A1 WO 2023096193A1 KR 2022016837 W KR2022016837 W KR 2022016837W WO 2023096193 A1 WO2023096193 A1 WO 2023096193A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- blocking rib
- insulating cover
- bus bar
- opening
- paragraph
- 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.)
- Ceased
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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
- 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
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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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
- 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
- H01M50/30—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
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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
- 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
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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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
- 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
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
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- 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 particularly, by arranging a pair of blocking ribs protruding toward a bus bar plate on an insulating cover to minimize the movement of high-temperature particles and gases toward the terminal of the bus bar plate, and to insulate A battery module capable of minimizing the discharge of high-temperature particles and gas through the gap by disposing an elastic gasket capable of elastically filling a gap between an opening of a cover and a terminal of a bus bar plate.
- a battery pack When a battery pack is configured by connecting a plurality of battery cells in series/parallel, a battery module composed of at least one battery cell is configured, and other components are added using the at least one battery module to configure the battery pack. method is generally applied.
- the battery cell stack inevitably generates heat when power is supplied, and if heat generation is not effectively controlled, a thermal runaway phenomenon in which the efficiency of the battery cell stack is rapidly reduced may occur, and in some cases, fire and explosion There is a risk of this happening.
- the internal pressure of the battery module increases rapidly due to the high-temperature particles and gas generated during thermal runaway.
- Chinese Patent Publication No. 202110308925 discloses a battery having a structure that protects the bus bar plate from high-temperature particles and gases generated during thermal runaway through a plurality of insulation plates disposed between the bus bar plate and the battery cell stack.
- a module is disclosed.
- the battery module disclosed in the above literature is disposed side by side along the left and right directions in a form in which a plurality of insulating plates are divided, leakage of high-temperature gas is not effectively prevented.
- the battery module disclosed in the above document has a problem in that the leakage of particles of the battery module to the outside is not effectively blocked because high-temperature particles can move between the divided insulation plates.
- the present invention was made to solve the above-mentioned problems of the prior art, and by disposing a pair of blocking ribs protruding toward the bus bar plate on the insulating cover, high-temperature particles and gas move toward the terminal of the bus bar plate.
- a first object is to provide a battery module that can minimize the
- the present invention provides a battery module capable of minimizing the discharge of high-temperature particles and gases through the gap by disposing an elastic gasket that can elastically fill the gap between the opening of the insulating cover and the terminal of the bus bar plate.
- the second purpose is to provide.
- the present invention arranges a sheet member having heat resistance between the battery cell stack and the bus bar plate, so that the sheet member covers the upper side and the front surface of the battery cell stack as a whole in the width direction, thereby preventing high-temperature particles and gases.
- a third object is to provide a battery module capable of minimizing damage to a bus bar plate and suppressing external leakage of particles and gas.
- a battery module includes a battery cell laminate formed by stacking a plurality of battery cells; a plurality of electrode leads disposed at one end of the battery cell stack and electrically connecting the plurality of battery cells; a bus bar plate electrically connecting the plurality of electrode leads and having at least one terminal on one side thereof; and an insulating cover disposed to face one side of the bus bar plate and having an opening at least partially exposing the at least one terminal to the outside, wherein the insulating cover covers one side of the bus bar plate. It is characterized in that it includes at least one blocking rib formed protruding toward.
- the at least one blocking rib may extend across the insulating cover along a left-right direction from a left edge to a right edge of the insulating cover.
- the at least one blocking rib may be provided at a lower position than the opening in a vertical direction.
- the blocking rib may include a first blocking rib provided at a lower position than the opening in a vertical direction; and a second blocking rib provided at a lower position than the first blocking rib in a vertical direction.
- first blocking rib and the second blocking rib may be disposed parallel to each other.
- first blocking rib and the second blocking rib may be integrally provided with each of the insulating cover.
- each of the first blocking rib and the second blocking rib may have a front end integrally connected to the insulating cover and a rear end contacting the bus bar plate.
- an elastic gasket that elastically fills a gap formed between the opening and the at least one terminal may be further included.
- the elastic gasket may be formed of a rubber material having electrical insulation and heat resistance.
- At least one sheet member fixed to the other side of the bus bar plate facing the battery cell stack and having heat resistance and electrical insulation may be further included.
- the sheet member may include a vertical portion attached to the other side surface of the bus bar plate and extending in the vertical direction; and a horizontal portion integrally connected to an upper end of the vertical portion and extending in a direction away from the other side surface of the bus plate, the horizontal portion at least partially covering an upper side surface of the battery cell stack, and the vertical portion It may be disposed to at least partially cover the entire surface of the battery cell stack.
- the width of the vertical portion in the left-right direction may be greater than or equal to the width of the front surface of the battery cell stack in the left-right direction.
- the left-right width of the horizontal portion may be greater than or equal to the horizontal width of the upper surface of the battery cell stack.
- the battery module according to the present invention has an effect of minimizing the movement of high-temperature particles and gas toward the terminal of the bus bar plate by arranging a pair of blocking ribs protruding toward the bus bar plate on the insulating cover.
- a sheet member having heat resistance is disposed between the battery cell stack and the bus bar plate, so that the sheet member covers the upper side and the front surface of the battery cell stack as a whole in the width direction so that high temperature It has the effect of minimizing damage to the bus bar plate by particles and gas and suppressing external leakage of particles and gas.
- FIG. 1 is an exploded perspective view of a battery module according to an embodiment of the present invention.
- Figure 2 is a perspective view of the first insulating cover shown in Figure 1;
- FIG. 3 is a front perspective view of the battery module shown in FIG. 1;
- Figure 4 is a cross-sectional view of Figure 3;
- FIG. 5 is a front perspective view of the first cassette shown in FIG. 4;
- Figure 6 is a partially enlarged and perspective view for explaining a sheet member provided in one embodiment of the present invention shown in Figure 1.
- battery module 100 battery cell laminate 100a: upper side 100b: front 110: battery cell 111: electrode lead 200: frame 210: lower frame 211: bottom frame 212: side frame 220: upper frame 300: insulating cover 310: First insulating cover 320: Second insulating cover 400: Sheet member 410: First sheet member 420: Second sheet member 500: Bus bar plate 500a: Bus bar 510: First bus bar plate 520: Second bus bar plate
- first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another component, and unless otherwise stated, the first component may be the second component, of course.
- the arrangement of an arbitrary element on the "upper (or lower)" or “upper (or lower)” of a component means that an arbitrary element is placed in contact with the upper (or lower) surface of the component.
- ком ⁇ онент when a component is described as “connected”, “coupled” or “connected” to another component, the components may be directly connected or connected to each other, but other components may be “interposed” between each component. ", or each component may be “connected”, “coupled” or “connected” through other components.
- FIG. 1 is an exploded perspective view of a battery module 1 according to an embodiment of the present invention.
- the battery module 1 according to an embodiment of the present invention, a plurality of battery cells 110 are accommodated inside a case or housing composed of a lower frame 210 and an upper frame 220 state can be configured.
- a plurality of battery cells may be closely arranged in a stacked state to form the battery cell laminate 100 .
- a lower frame 210 having a structure surrounding the lower surface and both side surfaces of the battery cell stack 100 to configure the case or housing of the battery module 1, and the upper side surface 110a of the battery cell stack 100 ) may include an upper frame 220 disposed on the side, and a pair of insulating covers 400 disposed to face the electrode leads 111 of the battery cell stack 100.
- the lower frame 210 may include a bottom frame 211 constituting a bottom surface and a pair of side frames 212 constituting two side walls.
- the bottom frame 211 and the pair of side frames 212 may be integrally formed by pressing a metal plate having a predetermined strength.
- the upper frame 220 serves to cover the upper surface 100a of the battery cell stack 100 and, like the lower frame 210, may be formed of a metal plate having a predetermined strength.
- the upper frame 220 may be assembled to the lower frame 210 by being coupled to the upper ends 211 of the pair of side frames 212 .
- the bottom surface 301 of both ends of the upper frame 220 and the upper end of the side frame 212 may be coupled through laser welding (L).
- the plurality of battery cells 110 may be rectangular pouch-type battery cells, and bidirectional battery cells in which positive and negative leads constituting the electrode lead 111 protrude in opposite directions may be used.
- the plurality of battery cells 110 are connected in series or in parallel through the bus bar 500a according to the desired output and capacity of the battery module 1 by using the bus bar plate 500, the electrode leads 111 of electrical connection can be made.
- the bus bar plate 500 includes a first bus bar plate 510 disposed in front of the battery cell stack 100 and a second bus bar plate 510 disposed in the rear of the battery cell stack 100.
- a bus bar plate 520 may be included.
- At this time, at least one of the first bus bar plate 510 and the second bus bar plate 520 may include at least one terminal 511, 512, and 513 for supplying power to the outside.
- FIG. 1 and below an embodiment in which a plurality of terminals 511, 512, and 513 are provided on the first bus bar plate 510 disposed in front of the battery cell stack 100 is illustrated as an example.
- at least one of the terminals 511, 512, and 513 is at least partially exposed to the outside through the opening 3103d of the first insulating cover 310, and the first, second, and third terminals ( 511, 512, 513) may be included.
- the present invention is not limited thereto, the following will be described based on an embodiment in which the first, second, and third terminals 511, 512, and 513 are disposed on the first bus bar plate 510 by way of example.
- the battery cell stack 100 may further include a cartridge, a buffer member, or a cooling means for accommodating the battery cells 110 .
- a pair of sheet members 400 and a pair of insulating covers 300 disposed to face the electrode leads 111 may be disposed on the open front and rear surfaces of the frame 200 .
- the insulating cover 300 may be coupled in a state in which the battery cell stack 100 is mounted on the frame 200 and the upper frame 220 is coupled to the lower frame 210 .
- a first insulating cover 310 may be coupled to the open front surface of the frame 200, and a second insulating cover 320 may be coupled to the open rear surface of the frame 200.
- the first insulating cover 310 and the second insulating cover 320 may be made of a material having predetermined mechanical strength and electrical insulation and heat resistance.
- the material of the insulating cover may be a thermoplastic synthetic resin having heat resistance of 600 degrees Celsius or more.
- the insulating cover may be manufactured by injection molding to facilitate implementation of a detailed shape.
- the insulating cover may be preferably manufactured through a plastic injection method using a WHOLLY AROMATIC POLYIMIDE-based material.
- At least one blocking rib (3104 in FIG. 2) may be provided as a means for minimizing movement in the direction (U-direction).
- a detailed configuration of the first insulating cover 310 having a blocking rib will be described later with reference to FIG. 2 and below.
- a sheet member 400 may be disposed to prevent the first insulating cover 310 from being damaged by gas and gas.
- a sheet member 400 for preventing damage to the second insulating cover 320 may be disposed between the upper end of the second insulating cover 320 and the rear surface of the battery cell stack 100 .
- the one disposed on the side of the first insulating cover 310 is referred to as the first sheet member 410
- the one disposed on the side of the second insulating cover 320 is referred to as the second sheet member 420.
- the first sheet member 410 and the second sheet member 420 rotate the front and rear corners of the upper surface 100a of the battery cell stack 100 in the left and right directions (Le-Ri direction). It may be continuously formed to cover the whole according to, and as shown, may be attached to the first insulating cover 310 and the second insulating cover 320 in a shape bent in a letter L, respectively.
- the outer surface 3101b of the first insulating cover 310 and the outer surface of the second insulating cover 320 have the first insulating cover 310 and the second insulating cover 320, respectively.
- FIG 2 and 3 are perspective views of the first insulating cover 310 provided in the battery module 1 according to an embodiment of the present invention.
- the first insulating cover 310 of the battery module 1 may include a cover body 3101 having a flat plate shape.
- the cover body 3101 serves to close the front surface of the frame 200 by being coupled to the open front surface of the frame 200 .
- a terminal coupling portion 3103 accommodating the first, second, and third terminals 511, 512, and 513 may be provided at an upper end of the outer surface 3101b of the cover body 3101.
- the terminal coupling portion 3103 is the first, second, and third terminal coupling portions 3103a, 3103b, and 3103c to separately accommodate and accommodate the first, second, and third terminals 511, 512, and 513, respectively. ), and they may protrude from the cover body 3101 toward the front.
- the first, second, and third terminal coupling portions 3103a, 3103b, and 3103c are spaced apart from each other as far as possible to prevent interference with each other.
- Openings 3103d may be provided in the first, second, and third terminal coupling portions 3103a, 3103b, and 3103c to at least partially expose the first, second, and third terminals 511, 512, and 513 to the outside, respectively. there is.
- a plurality of gaskets 3105a, 3105b, and 3105c may be provided to elastically fill gaps formed between the 511, 512, and 513.
- the gaskets 3105a, 3105b, and 3105c may be formed of a rubber material having predetermined elasticity and electrical insulation and heat resistance, and may be preferably formed of a fluororesin-based synthetic rubber material.
- the one provided in the first terminal coupling part 3103a is designated as the first gasket 3105a
- the one provided in the second terminal coupling part 3103b is designated as the second gasket 3105b.
- the third terminal coupling portion 3103c will be referred to as a third gasket 3105c.
- first, second, and third gaskets 3105a, 3105b, and 3105c high-temperature particles and gas generated during thermal runaway of the battery cell stack 100 are discharged through the opening 3103d and the respective terminals 511 and 512. , 513), leakage to the outside through the gap formed between them can be minimized.
- first, second, and third gaskets 3105a, 3105b, and 3105c will be described later with reference to FIG. 5 .
- the inner surface 3101a of the cover body 3101 minimizes the movement of high-temperature particles and gases generated during thermal runaway of the battery cell stack 100 in an upward direction (U-direction).
- At least one blocking rib 3104 may be provided as a means for doing so.
- the at least one blocking rib 3104 blocks the space formed between the bus bar plate and the inner surface 3101a of the first insulating cover 310 so that high-temperature particles and gas can pass through the first insulating cover 310. It is configured to function as a barrier preventing movement of the upper direction (U-direction) toward the opening 3103d of the .
- the blocking rib 3104 is provided in the up-down direction (U-D direction) to prevent high-temperature particles and gas from moving upward (U-direction) toward the opening 3103d of the first insulating cover 310. ), it may be disposed at a lower position than the opening 3103d.
- FIG. 2 illustratively shows an embodiment in which the blocking rib 3104 includes a first blocking rib 3104a and a second blocking rib 3104b disposed side by side and spaced apart from each other in the vertical direction (U-D direction).
- the present invention is not limited thereto, the following description will be made based on an embodiment in which the first blocking rib 3104a and the second blocking rib 3104b are illustratively provided.
- a first blocking rib 3104a is referred to as a first blocking rib 3104a provided at a lower position than the opening 3103d on the lower side of the opening 3103d in the vertical direction (U-D direction), and The one provided at a position lower than the first blocking rib 3104a will be referred to as the second blocking rib 3104b.
- the first blocking rib 3104a and the second blocking rib 3104b allow high-temperature particles and gas to move upward (U-direction) toward the opening 3103d of the first insulating cover 310. It acts as a barrier to block the propagation path (P) to To perform such a barrier role, the first blocking rib 3104a and the second blocking rib 3104b extend from the inner surface 3101a of the first insulating cover 310 toward the first bus bar plate 510. formed by extruding
- the rear end 3104a2 of the first blocking rib 3104a and the rear end 3104b2 of the second blocking rib 3104b move forward and backward to the position where they contact the bus bar plate ( F-R direction) can protrude.
- first blocking rib 3104a and the second blocking rib 3104b are formed to entirely block the space formed between the first bus bar plate 510 and the inner surface 3101a of the first insulating cover 310. may extend across the cover body 3101 along the left-right direction (Le-Ri direction). Illustratively, the first blocking rib 3104a and the second blocking rib 3104b may continuously extend from the right edge 3101c to the left edge 3101d of the cover body 3101 of the first insulating cover 310. there is.
- first blocking rib 3104a and the second blocking rib 3104b may be integrally formed with the first insulating cover 310 . Therefore, the front end 3104a1 of the first blocking rib 3104a and the front end 3104b1 of the second blocking rib 3104b may be integrally formed on the inner surface 3101a of the cover body 3101, Left and right ends of the blocking rib 3104a and the second blocking rib 3104b may be integrally formed with the edge rib 3102 of the first insulating cover 310 .
- the structure can be simplified and the manufacturing cost can be reduced compared to the case where the first blocking rib 3104a and the second blocking rib 3104b are provided separately.
- the blocking rib is designed to mainly exhibit a barrier function against high-temperature particles among the high-temperature particle barrier function and the venting gas leakage prevention function. can Of course, the blocking rib may also function to prevent leakage of venting gas.
- first blocking rib 3104a and the second blocking rib 3104b upward (U-direction) movement of high-temperature particles and gas can be minimized by the first blocking rib 3104a and the second blocking rib 3104b, but at least some of them are There is a possibility of leakage to the outside through a gap formed between the insulating cover 310 and each of the terminals 511, 512, and 513.
- the first, second, and third gaskets 3105a, 3105b, and 3105c elastically fill the gap formed between the first insulating cover 310 and the respective terminals 511, 512, and 513 to form the first gasket. External leakage of high-temperature particles and gas passing through the blocking rib 3104a and the second blocking rib 3104b can be suppressed.
- the first, second and third gaskets 3105a, 3105b, and 3105c may have a difference in some configurations in terms of arrangement positions or sizes, but an alternative configuration may be applied almost identically.
- the description will be made based on the configuration of the first gasket 3105a shown in FIG. 5, and unless otherwise stated, the configuration of the first gasket 3105a includes the second gasket 3105b and the third gasket 3105c. The same can be applied to
- the first gasket 3105a may include a base portion 3105a1 in the shape of a quadrangular frame having an open inner side.
- the base part 3105a1 is a part that is fixed to the inside of the opening 3103d of the first insulating cover 310 in an interlocking manner, and when the internal pressure of the battery module 1 rises, the first gasket 3105a escapes to the outside. It serves as a support so that it does not fall.
- the base portion 3105a1 may be formed to have a larger outer shape than the opening portion 3103d.
- an opening coupling portion 3105a2 having a shape corresponding to a gap formed between the first insulating cover 310 and each of the terminals 511, 512, and 513 may be provided. there is.
- the opening coupling portion 3105a2 serves to substantially fill a gap formed between the first insulating cover 310 and each of the terminals 511, 512, and 513.
- An outer circumferential surface of the opening coupling portion 3105a2 may have a shape corresponding to an inner circumferential surface of the opening 3103d.
- An inner circumferential surface of the opening coupling portion 3105a2 may have a shape corresponding to an outer circumferential surface of a portion of the terminal 511 exposed to the outside through the opening 3103d.
- the opening coupling part 3105a2 may be formed to have a larger width than the corresponding gap so that it can be elastically compressed and coupled while being interposed in the corresponding gap.
- the opening coupling portion 3105a2 has an “L” shape in which a vertical extension portion 3105a21 and a horizontal extension portion 3105a22 are connected. This corresponds to the fact that the opening 3103d is formed in an "L" shape.
- a through hole 3105a3 having a size corresponding to the external size of the first terminal 511 is formed inside the horizontally extending portion of the opening coupling part 3105a2 so that the first terminal 511 can be at least partially exposed to the outside. It can be.
- An inner circumferential surface of the through hole 3105a3 may have a shape corresponding to an outer circumferential surface of a portion of the terminal 511 exposed to the outside through the opening 3103d.
- a fixing part 3105a4 may be provided at one end of the base part 3105a1.
- the fixing part 3105a4 is a part extending in a direction different from that of the base part 3105a1, preferably in a vertical direction, and serves to fix the first gasket 3105a to the first terminal coupling part 3103a as a whole.
- the fixing part 3105a4 has a shape connected to the vertical extension part 3105a21 of the opening coupling part 3105a2 and has a larger area than the vertical extension part 3105a21.
- the fixing part 3105a4 may be pressurized and interposed between the first insulating cover 310 and the first bus bar plate 510 in the forward and backward directions.
- the opening coupling portion does not necessarily have to be a two-dimensional plane shape, and if the opening of the insulating cover is a three-dimensional shape, it may have a three-dimensional shape having a vertical extension portion 3105a21 and a horizontal extension portion 3105a22 like the first gasket 3105a.
- the gasket may include an expansion interposition portion having a step difference with the opening coupling portion and having a larger area than the opening coupling portion.
- the base part 3105a1 and the fixing part 3105a4 may correspond thereto. Therefore, the expansion intervening portion also does not necessarily have to be a two-dimensional planar shape, and may have a three-dimensional shape corresponding to the shape of the opening coupling portion.
- An outer circumferential surface of the opening coupling portion may contact an inner circumferential surface defining an opening of the insulating cover, and a surface of the expansion intervening portion may contact an inner surface of the insulating cover.
- the gaskets 3105a, 3105b, and 3105c are heat-resistant rubber and may function as a sealing material to prevent leakage of venting gas.
- the gasket may have heat resistance of 200 to 300 degrees Celsius.
- the gasket may be designed to mainly perform a venting gas leakage prevention function among high-temperature particle barrier functions and venting gas leakage prevention functions.
- the gasket may also serve as a barrier against high-temperature particles.
- the sheet member 400 includes the first sheet member 410 disposed between the upper end of the first bus bar plate 510 and the battery cell stack 100, and the second bus bar plate 520. It may include a second sheet member 420 disposed between the upper end of the battery cell stack 100.
- the first sheet member 410 and the second sheet member 420 may have differences in some configurations in terms of positions or sizes in which they are disposed, but other configurations may be applied almost identically.
- the description will be made based on the configuration of the first sheet member 410 shown in FIG. 6, and unless otherwise stated, the configuration of the first sheet member 410 will be equally applied to the second sheet member 420.
- the first sheet member 410 includes a vertical portion 411 attached to the first bus bar plate 510 and extending in the vertical direction (U-D direction), and the first bus bar plate 510. ) It may be configured to include a horizontal portion 412 extending in a direction away from.
- the vertical portion 411 serves to cover the upper side 100a of the battery cell stack 100, and the vertical portion 411 serves to cover the front surface 100b of the battery cell stack 100. .
- the vertical portion 411 and the horizontal portion 412 may be integrally formed, and the vertical portion 411 and the horizontal portion 412 may be formed by bending a plate-shaped base material in an L-shape. .
- the first sheet member 410 serves to prevent the first insulating cover 310 from being damaged by high-temperature particles and gas generated from the battery cell stack 100 .
- the first sheet member 410 needs to entirely cover the corner formed by the meeting of the front surface 100b and the upper side surface 100a of the battery cell stack 100 along the left and right directions (Le-Ri direction). there is.
- the width W2 of the horizontal portion 412 and the vertical portion 411 of the first sheet member 410 in the left-right direction (Le-Ri direction) is the left-right direction (Le-Ri direction) of the battery cell stack 100. It may be formed to be greater than or equal to the width W1.
- At least the horizontal portion 412 of the first sheet member 410 is formed continuously over the left-right direction (Le-Ri direction) so that high-temperature particles and gas do not move through the first sheet member 410. It is necessary, and for this purpose, between the left end and the right end may be maintained in a completely blocked state.
- a conventional slit or open hole may not be provided at all.
- the first sheet member 410 may be configured to be fixed to the inner surface of the first bus bar plate 510 .
- the vertical portion 411 of the first sheet member 410 may be interposed between the front surface 100b of the battery cell stack 100 and the first bus bar plate 510 in the front and rear directions.
- the vertical portion 411 of the first sheet member 410 may be firmly attached to the inner surface of the first bus bar plate 510 using an adhesive or attachment means.
- the horizontal portion 412 of the first sheet member 410 may be interposed between the upper side surface 100a of the battery cell stack 100 and the upper frame 220 in the vertical direction.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
Description
Claims (14)
- 복수의 전지셀이 적층되어 형성되는 전지셀 적층체;상기 전지셀 적층체의 일단부에 배치되며, 상기 복수의 전지셀을 전기적으로 연결하는 복수의 전극 리드;상기 복수의 전극 리드를 전기적으로 연결하며, 일측면에 적어도 하나의 터미널이 구비되는 버스바 플레이트; 및상기 버스바 플레이트의 일측면에 대향해서 배치되며, 상기 적어도 하나의 터미널을 적어도 부분적으로 외부로 노출시키는 개구부를 구비하는 절연커버;를 포함하고,상기 절연커버는, 상기 버스바 플레이트의 일측면을 향해 돌출되어 형성되는 적어도 하나의 차단리브를 포함하는 전지 모듈.
- 제1 항에서,상기 적어도 하나의 차단리브는, 상기 절연커버의 좌측 에지로부터 우측 에지까지 좌우방향을 따라 상기 절연커버를 가로질러 연장되는 전지 모듈.
- 제2 항에서,상기 적어도 하나의 차단리브는, 상하방향을 기준으로 상기 개구부보다 더 낮은 위치에 구비되는 전지 모듈.
- 제3 항에서,상기 차단리브는,상하방향을 기준으로 상기 개구부보다 더 낮은 위치에 구비되는 제1 차단리브; 및상하방향을 기준으로 상기 제1 차단리브보다 더 낮은 위치에 구비되는 제2 차단리브;를 포함하는 전지 모듈.
- 제4 항에서,상기 제1 차단리브와 상기 제2 차단리브는 서로 나란하게 배치되는 전지 모듈.
- 제4 항에서,상기 제1 차단리브와 상기 제2 차단리브는, 각각 상기 절연커버에 일체로 구비되는 전지 모듈.
- 제6 항에서,상기 제1 차단리브와 상기 제2 차단리브는, 각각 전방단부가 상기 절연커버에 일체로 연결되고 후방단부가 상기 버스바 플레이트에 접촉하게 되는 전지 모듈.
- 제1 항에서,상기 개구부와 상기 적어도 하나의 터미널을 사이에 형성되는 간극을 탄력적으로 메우는 탄성체 가스켓을 더 포함하는 전지 모듈.
- 제8 항에서,상기 탄성체 가스켓은, 전기 절연성 및 내열성을 갖는 고무 재질로 형성되는 전지 모듈.
- 제8 항에서,상기 탄성체 가스켓은, 상기 절연커버의 상기 개구부를 통해 노출되는 상기 버스바 플레이트의 터미널과 상기 개구부 내주면 사이의 간극을 폐색하는 개구 결합부와, 상기 개구 결합부와 단차를 가지고 상기 개구 결합부보다 큰 면적을 가지는 확장 개재부를 구비하고,상기 확장 개재부의 표면은 상기 절연커버의 내면과 접하며,상기 개구 결합부에는, 상기 절연커버의 상기 개구부를 통해 노출되는 상기 버스바 플레이트의 터미널 형상과 대응하는 형상의 관통홀이 마련된, 전지 모듈.
- 제 1항 또는 제8 항에서,상기 전지셀 적층체를 향하는 상기 버스바 플레이트의 타측면에 고정되며, 내열성 및 전기절연성을 갖는 적어도 하나의 시트부재를 더 포함하는 전지 모듈.
- 제11 항에서,상기 시트부재는,상기 버스바 플레이트의 타측면에 부착되며, 상하방향으로 연장되는 수직부; 및상기 수직부의 상단부에 일체로 연결되며, 상기 버스 플레이트의 타측면으로부터 멀어지는 방향으로 연장되는 수평부;를 포함하고,상기 수평부는, 상기 전지셀 적층체의 상측면을 적어도 부분적으로 커버하고, 상기 수직부는 상기 전지셀 적층체의 전면을 적어도 부분적으로 커버하도록 배치되는 전지 모듈.
- 제12 항에서,상기 수직부의 좌우방향 폭은 상기 전지셀 적층체의 전면의 좌우방향 폭보다 더 크거나 같게 되는 전지 모듈.
- 제12 항에서,상기 수평부의 좌우방향 폭은 상기 전지셀 적층체의 상측면의 수평방향 폭보다 더 크거나 같게 되는 전지 모듈.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2024531370A JP7789920B2 (ja) | 2021-11-26 | 2022-10-31 | 電池モジュール |
| EP22898875.4A EP4432441B1 (en) | 2021-11-26 | 2022-10-31 | Battery module |
| CN202280078212.4A CN118302903A (zh) | 2021-11-26 | 2022-10-31 | 电池模块 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020210165065A KR20230077873A (ko) | 2021-11-26 | 2021-11-26 | 전지 모듈 |
| KR10-2021-0165065 | 2021-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023096193A1 true WO2023096193A1 (ko) | 2023-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2022/016837 Ceased WO2023096193A1 (ko) | 2021-11-26 | 2022-10-31 | 전지 모듈 |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4432441B1 (ko) |
| JP (1) | JP7789920B2 (ko) |
| KR (1) | KR20230077873A (ko) |
| CN (1) | CN118302903A (ko) |
| WO (1) | WO2023096193A1 (ko) |
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| KR20250052867A (ko) * | 2023-10-12 | 2025-04-21 | 주식회사 엘지에너지솔루션 | 이차전지모듈 |
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| CN209896150U (zh) * | 2019-07-25 | 2020-01-03 | 中车时代电动汽车股份有限公司 | 一种组合电池包的高压防护结构 |
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| KR20210065268A (ko) * | 2019-11-26 | 2021-06-04 | 주식회사 엘지에너지솔루션 | 버스바 프레임 조립체 및 이를 포함하는 배터리 모듈 |
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| JP5475633B2 (ja) * | 2010-12-24 | 2014-04-16 | 株式会社東芝 | 組電池装置 |
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| KR101807115B1 (ko) * | 2014-04-03 | 2017-12-08 | 주식회사 엘지화학 | 언더 베이스 바를 포함하는 배터리 모듈 어레이 |
| JP6274052B2 (ja) * | 2014-09-04 | 2018-02-07 | 株式会社Gsユアサ | 蓄電装置 |
| KR102416919B1 (ko) * | 2019-02-26 | 2022-07-04 | 주식회사 엘지에너지솔루션 | 전지 모듈 |
| KR102433361B1 (ko) * | 2019-12-17 | 2022-08-16 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지팩 |
| CN212485456U (zh) * | 2020-07-08 | 2021-02-05 | 天津市捷威动力工业有限公司 | 一种动力电池模组 |
-
2021
- 2021-11-26 KR KR1020210165065A patent/KR20230077873A/ko active Pending
-
2022
- 2022-10-31 CN CN202280078212.4A patent/CN118302903A/zh active Pending
- 2022-10-31 JP JP2024531370A patent/JP7789920B2/ja active Active
- 2022-10-31 EP EP22898875.4A patent/EP4432441B1/en active Active
- 2022-10-31 WO PCT/KR2022/016837 patent/WO2023096193A1/ko not_active Ceased
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| KR20210063942A (ko) * | 2019-11-25 | 2021-06-02 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지팩 |
| KR20210065268A (ko) * | 2019-11-26 | 2021-06-04 | 주식회사 엘지에너지솔루션 | 버스바 프레임 조립체 및 이를 포함하는 배터리 모듈 |
| KR20210092039A (ko) * | 2020-01-15 | 2021-07-23 | 주식회사 엘지에너지솔루션 | 방염 시트를 구비한 배터리 모듈, 이를 포함하는 배터리 랙, 및 전력 저장 시스템 |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP4432441B1 (en) | 2026-01-14 |
| KR20230077873A (ko) | 2023-06-02 |
| EP4432441A1 (en) | 2024-09-18 |
| JP7789920B2 (ja) | 2025-12-22 |
| JP2024543920A (ja) | 2024-11-26 |
| EP4432441A4 (en) | 2025-03-12 |
| CN118302903A (zh) | 2024-07-05 |
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