WO2023075211A1 - 난연성이 향상된 커넥터를 적용한 배터리 모듈 - Google Patents
난연성이 향상된 커넥터를 적용한 배터리 모듈 Download PDFInfo
- Publication number
- WO2023075211A1 WO2023075211A1 PCT/KR2022/015316 KR2022015316W WO2023075211A1 WO 2023075211 A1 WO2023075211 A1 WO 2023075211A1 KR 2022015316 W KR2022015316 W KR 2022015316W WO 2023075211 A1 WO2023075211 A1 WO 2023075211A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- connector
- housing
- battery module
- battery
- flame retardant
- Prior art date
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 239000003063 flame retardant Substances 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000011247 coating layer Substances 0.000 claims abstract description 11
- 239000007769 metal material Substances 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 18
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000013022 venting Methods 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 8
- 239000010410 layer Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000012777 electrically insulating material Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 29
- 238000003466 welding Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
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- 150000002739 metals Chemical class 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
- 229910000652 nickel hydride 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
- 229920000647 polyepoxide Polymers 0.000 description 1
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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
- H01M50/20—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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2107/00—Four or more poles
-
- 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, to a battery module to which a connector having improved flame retardancy is applied.
- lithium secondary batteries are in the limelight because of their advantages of free charge and discharge, very low self-discharge rate, and high energy density because they hardly have a memory effect compared to nickel-based secondary batteries.
- a secondary battery may be used singly, but in general, a plurality of secondary batteries are electrically connected in series and/or parallel to each other in many cases.
- a plurality of secondary batteries may be accommodated in one module case while being electrically connected to each other to form one battery module.
- the battery modules may be used singly or two or more of them may be electrically connected in series and/or parallel to form a higher level device such as a battery pack.
- a plurality of battery modules may be vulnerable to fire.
- the spark means an active material detached from an electrode inside a battery cell or molten aluminum particles.
- a flame or the like may occur in the battery cell depending on the case. If these gases or flames are indiscriminately discharged out of the battery module, thermal damage may be given to surrounding battery modules, and thus fire may rapidly spread.
- the connector 2 is exposed to the outside of the module case, but since the connector is usually made of plastic by injection molding, it is very vulnerable to heat or flame. For this reason, when high-temperature gas or flame is generated inside the battery module, the connector is melted, and the gas and flame are easily discharged to the outside through the missing connector part. Gases and flames thus released may cause ignition of other battery modules nearby.
- the present invention has been devised to solve the above problems, and an object of the present invention is to suppress or delay the disappearance of the connector due to high-temperature gas when the battery module internally ignites by strengthening the flame retardancy of the connector.
- an object of the connector is to prevent gas leakage through the connector by reinforcing the flame retardancy of the connector and to minimize propagation to other battery modules in the vicinity by discharging high-temperature gas through a previously intended safety path.
- a battery module according to the present invention for solving the above object is a cell assembly having battery cells; and a module case accommodating the cell assembly and having a connector mounting hole on one side; and a connector assembly connected to a circuit board provided inside the module case and having at least a portion exposed to the outside of the module case through the connector mounting hole, wherein the connector assembly includes connector pins on the inside and a connector housing at least partially exposed outside the connector mounting hole; and a flame retardant block formed of a metal material and surrounding a circumference of the connector housing inside the module case, wherein the flame retardant block may have a coating layer of a non-combustible material on a surface facing the inside of the module case.
- the flame retardant block may be made of aluminum, and the coating layer may include ceramic particles.
- the thickness of the aluminum layer may be within a range of 3 mm to 10 mm, and the coating layer may be provided within a range of 0.1 mm to 1 mm.
- the connector housing may include a first housing at least partially exposed to the outside of the connector mounting hole; and a second housing having at least a portion interposed inside the first housing.
- a sealing gasket disposed on an upper surface of the flame retardant block opposite to a lower surface of the flame retardant block and wrapped around an outer circumference of the first housing; and a fixing plate passed through the first housing and disposed above the sealing gasket, and the fixing plate, the sealing gasket, and the flame retardant block may be integrally fixedly coupled by a fastening member.
- the module case may include a main housing provided in a rectangular tubular shape capable of accommodating the cell assembly therein, and a front cover and a rear cover provided to cover the main housing and front and rear surfaces.
- the connector mounting hole is provided on the front cover, and the main housing includes a top plate covering the top of the cell assembly, a bottom plate covering the bottom of the cell assembly, a left side plate covering both side parts of the cell assembly, and A right side plate may be included, and the top plate may have a venting hole for discharging gas when the battery cell ignites.
- An insulating cover plate made of an electrically insulating material and provided between an upper portion of the cell assembly and the top plate, wherein the insulating cover plate has one or more cutting lines cut or cut in a predetermined shape, The cutting line may be provided at a position corresponding to the venting hole.
- the cutting line may be formed in an arc or C shape.
- a battery pack including the above-described battery module may be provided.
- the leakage of gas through the connector is prevented by strengthening the flame retardancy of the connector, and high-temperature gas is discharged through a previously intended safety path, thereby minimizing propagation to other battery modules nearby.
- FIG. 1 is a schematic diagram showing an example in which gas and flame generated inside a battery module according to the prior art are discharged through a connector.
- FIG. 2 is a schematic perspective view of a battery module according to an embodiment of the present invention.
- FIG. 3 is a partially exploded perspective view of the battery module of FIG. 1;
- FIG. 4 is an exploded perspective view of a cell assembly, a bus bar frame, and an insulating cover plate according to an embodiment of the present invention.
- FIG. 5 is an enlarged view of a main part of FIG. 2 .
- FIG. 6 is a perspective view showing the configuration of a connector assembly according to an embodiment of the present invention.
- FIG. 7 is a combined perspective view of the connector assembly of FIG. 6;
- FIG. 8 is a cross-sectional view of the flame retardant block taken along AA' of FIG. 6;
- FIG. 9 is a reference diagram illustrating an example in which gas venting is induced to an upper part of a module case when internal ignition of a battery module according to an embodiment of the present invention.
- FIG. 2 is a schematic perspective view of a battery module according to an embodiment of the present invention
- FIG. 3 is a partially exploded perspective view of the battery module of FIG. 1
- FIG. 4 is a cell assembly and a bus bar frame according to an embodiment of the present invention.
- An exploded perspective view of the insulating cover plate, and FIG. 5 is an enlarged view of the main parts of FIG. 2 .
- the battery module 10 includes a cell assembly 100, a module case 200 and a connector assembly 300.
- the cell assembly 100 may be referred to as an assembly of battery cells 110 formed by stacking a plurality of battery cells 110 .
- the cell assembly 100 may be provided in a form in which the battery cells 110 are stacked in a left-right direction by standing each in a vertical direction.
- the battery cell 110 is a pouch-type secondary battery, and is a bidirectional pouch-type secondary battery in which positive and negative leads extend in opposite directions along the length of the battery cell 110 .
- the cell assembly 100 may further include buffer pads 120 disposed on both outermost portions along the stacking direction.
- the buffer pad 120 may be made of a foam material capable of absorbing pressure during swelling of the battery cells 110 and maintaining electrical insulation with the module case 200 .
- the pouch-type secondary battery may be composed of an electrode assembly, an electrolyte solution, and a pouch exterior material.
- the pouch exterior may be composed of two pouches, at least one of which may have a concave inner space formed therein.
- the electrode assembly and the electrolyte may be accommodated in the inner space of the pouch exterior material.
- Sealing parts are provided on the outer circumferential surfaces of the two pouches, and the sealing parts are fused to each other, so that the inner space in which the electrode assembly is accommodated can be sealed.
- a part of the electrode lead is interposed between the sealing parts of the pouch exterior material, one end is attached to the electrode assembly, and the other end is exposed to the outside of the pouch exterior material, thereby functioning as an electrode terminal of a secondary battery.
- the module case 200 may include a main housing 210 , a front cover 220 and a rear cover 230 .
- the main housing 210 has a square tubular shape having a length substantially corresponding to the length of the cell assembly 100, and the cell assembly 100 is inserted into the inner space together with an insulating cover plate 600 to be described later in an interference-fitting manner. can be configured to do so.
- a main housing 210 is advantageous in reducing the weight and volume of the battery module 10 .
- the main housing 210 is made of a metal material with excellent mechanical rigidity and a high melting point, and has a structure in which four sides are sealed. It may not be easily discharged to the outside through.
- the main housing 210 may have a high flame retardant function by coating the inner surface with an incombustible material.
- the main housing 210 includes a top plate 211, a bottom plate 212, a left side plate 213, and a right side plate 214 corresponding to four sides, of which the top plate 211 has It may be configured to have at least one venting hole 211a.
- the venting hole 211a may be an outlet through which the gas escapes to the outside of the battery module 10 when a large amount of gas is generated when the battery module 10 internally ignites.
- the gas escaping from the venting hole 211a of the battery module 10 is returned to the outside of the battery pack through a predetermined path.
- a duct structure communicating with the venting hole 211a may be disposed above the battery module in order to discharge the battery.
- venting hole 211a to the top plate 211 of the main housing 210, when the inside of the battery module 10 is ignited, gas is discharged through a specific path, so that the internal pressure of the battery module 10 It is possible to prevent external collapse of the battery module 10 due to elevation and to minimize thermal damage to other battery modules 10 around it due to gas being discharged in an unintended direction.
- the top plate 211, the bottom plate 212, the left side plate 213, and the right side plate 214 are all provided as an integrated type, but the rights of the present invention are thus provided.
- the scope does not have to be limited.
- the main housing 210 may be manufactured in a type in which a U-shaped frame and a plate-shaped plate are coupled by welding or the like.
- the U-shaped frame is made by integrally manufacturing the bottom plate 212, the left side plate 213, and the right side plate 214, and the plate-shaped plate corresponds to a top plate 211 manufactured separately.
- the front cover 220 and the rear cover 230 are structures provided to be coupled to the open portion of the main housing 210 and cover the front and rear sides of the cell assembly 100 .
- the front cover 220 and the rear cover 230 have inner surfaces made of an insulating and flame retardant material or coated with a non-combustible material to shield electrical connections of the cell assembly 100 and to prevent leakage of gas or flame. It is configured to suppress or delay as much as possible.
- the front cover 220 may have a connector mounting hole 221 formed by penetrating one side.
- the connector mounting hole 221 is configured to connect, for example, a predetermined cable connector (not shown) to the connector assembly 300 of the battery module 10 according to the present invention.
- the connector assembly 300 is connected to a circuit board provided inside the module case 200, and as shown in FIG. 5, a portion of the connector assembly 300 is exposed to the outside of the module case 200 through the connector mounting hole 221.
- the circuit board means a flexible printed circuit board forming the voltage sensing member 500 to be described later.
- the connector assembly 300 may include a connector housing 310 , a flame retardant block 320 , a sealing gasket 330 , and a fixing plate 340 .
- the connector housing 310 includes a first housing 311 and a second housing 312 .
- the first housing 311 may be made of a plastic material, have an inlet facing upward, and be exposed to the outside of the front cover 220 through the connector mounting hole 221 .
- the second housing 312 is a component for providing sealing properties to the inside of the first housing 311 , and at least a portion of the second housing 312 may be interposed in the first housing 311 .
- the second housing 312 is made of an epoxy or silicone resin material, and is cured in a form wrapped around a portion of each connector pin 313 to prevent vibration and movement of the connector pins 313. there is.
- the flame retardant block 320 is formed of a metal material having a high melting point and may be provided in a rectangular frame shape surrounding the circumference of the connector housing 310 inside the module case.
- the flame retardant block 320 may be formed of an aluminum (Al) layer having a thickness of about 5.4 mm and a coating layer 322 of a non-combustible material formed by applying ceramic particles to the lower surface of the aluminum layer 321 .
- the thickness of the coating layer 322 may be about 0.1 mm.
- the lower surface of the aluminum layer 321 means a surface facing the inside of the module case 200 .
- the thickness of the aluminum layer 321 and the coating layer 322 may be designed differently from the present embodiment.
- the thickness of the layer made of aluminum may be within a range of 3 mm to 10 mm
- the coating layer may be designed within a range of 0.05 mm to 1 mm.
- the flame retardant block 320 acts like a firewall to block high-temperature gas or flame from moving from the inside of the module case 200 to the periphery of the connector housing 310, thereby preventing the connector housing 310 from rapidly melting. serves to prevent In addition, the flame retardant block 320 covers the connector mounting hole 221 inside the module case 200, so it can effectively prevent gas or flame from moving toward the connector mounting hole 221.
- the present applicant tried to apply a flame retardant block in which aluminum (Al) and stainless steel (SUS) are double bonded to the connector assembly in the research stage. Since stainless steel has a higher melting point than aluminum, a flame retardant block made of stainless steel is superior in flame retardancy to a flame retardant block made of simply aluminum. However, there was a problem in that it was difficult to design a flame retardant block with a desired thickness due to the increase in cost due to the double bonding of aluminum and stainless steel and the increase in the thickness of the flame retardant block, especially when the two metals were double bonded. However, as described above, according to the configuration of the flame retardant block 320 in which the coating of the non-combustible material is applied to the aluminum layer 321, the thickness of the flame retardant block 320 can be designed more freely while increasing flame retardancy.
- the sealing gasket 330 may be referred to as a configuration for eliminating a gap due to a tolerance between the circumference of the connector housing 310 and the inner diameter of the flame retardant block 320 in the form of a frame.
- the sealing gasket 330 may be made of a rubber or silicon material having elasticity and may be provided to surround an outer circumference of the connector housing 310 .
- the sealing gasket 330 may be configured to surround the outer circumference of the first housing 311 and be disposed on the upper surface of the flame retardant block 320 .
- the fixing plate 340 is a configuration used as a means for fixing the sealing gasket 330 to the flame retardant block 320.
- the fixing plate 340 passes through the body of the first housing 311 at the entrance of the first housing 311 and is disposed above the sealing gasket 330, and the sealing gasket Together with 330, it may be integrally and fixedly coupled to the flame retardant block 320.
- the fixing plate 340, the sealing gasket 330, and the flame retardant block 320 are provided with matching bolt fastening holes when stacked vertically, and are integrally fixed and coupled to each other by fastening the bolts (B). can be configured.
- the battery module 10 further includes a bus bar frame 400, a voltage sensing member 500, and an insulating cover plate 600. can do.
- the bus bar frame 400 is a means for installing and supporting a plurality of bus bars 410 and other electrical components.
- the bus bar 410 refers to a conductive rod-shaped component made of copper, aluminum, or the like used to connect the battery cells 110 in series and/or parallel.
- a predetermined number of battery cells 110 may be configured to be connected in series and/or in parallel by welding positive and negative leads to one bus bar 410 .
- the bus bar frame 400 includes a front frame vertically disposed on the front portion of the cell assembly 100 and a rear frame vertically disposed on the rear portion of the cell assembly 100 .
- the front frame and the rear frame have sizes corresponding to the front and rear parts of the cell assembly 100 and are provided in the form of a plate body capable of covering the corresponding parts, and a plurality of bus bars 410 are mounted on one surface can be configured to do so.
- the front frame and the rear frame may include slits through which the electrode leads of the battery cells 110 pass in the forward and backward directions ( ⁇ X-axis direction).
- electrode leads may pass through the slits and be drawn out to the front of the bus bar frame 400, and the drawn out portion may be configured to be attached to the corresponding bus bar 410 by welding or the like. there is.
- the electrode leads and bus bars 410 of the battery cells 110 may be shielded by the front cover 220 and the rear cover 230 .
- the voltage sensing member 500 is a means for sensing voltages of the battery cells 110 and may be implemented as a flexible printed circuit board.
- the voltage sensing member 500 may be disposed along the longitudinal direction on the top of the cell assembly 100 and may have as many welding plates as the number of bus bars 410 at both ends. The welding plates may be attached to each bus bar 410 by welding or the like.
- the aforementioned connector assembly 300 may be fixedly mounted on the flexible printed circuit board and exposed to the outside through the connector mounting hole 221 of the front cover 220 .
- a cable connector may be connected to the connector assembly 300 to transmit voltage information of the battery cells 110 to an external device such as a BMS.
- the insulating cover plate 600 is made of a material having electrical insulation, such as a plastic material, and is disposed on the top of the cell assembly 100 to insulate between the cell assembly 100 and the top plate 211 of the main housing 210. used as a means for
- the insulating cover plate 600 corresponds to the upper area of the cell assembly 100 and has a thin plate shape, and both ends are hinged to the upper end of the bus bar frame 400.
- the upper portion of the cell assembly 100 and the top plate 211 of the main housing 210 are insulated by the insulating cover plate 600.
- Insulation can be secured between the outermost outer periphery of the cell assembly 100 and both side plates 213 and 214 of the main housing 210 by the buffer pad 120, and the lower part of the cell assembly 100 and the main housing 210 can be insulated.
- Insulation may be secured by filling a space between the bottom plate 212 of the housing 210 with a thermally conductive resin (not shown).
- the two bus bar frames 400 It is easy to place in a vertical state on the front and rear of the cell assembly 100, and furthermore, when the electrode leads of the battery cells 110 are inserted into the bus bar frame 400, the two bus bar frames 400 Each can be rotated at a predetermined angle, which is convenient for electrode lead insertion work.
- the insulating cover plate 600 is provided at a position vertically corresponding to the venting hole 211a of the main housing 210, and the body is cut into a predetermined shape. It includes a cutting line 610 formed by cutting or cutting.
- the cutting line 610 may be substantially arc or C-shaped.
- the cutting line 610 may be replaced with a U-shape or a Y-shape.
- the cutting line 610 is employed for the purpose of smoothly discharging gas through the insulating cover plate 600 when a large amount of gas is generated when the battery module 10 internally ignites. If the inside of the battery module 10 is ignited, a large amount of gas fills the inside of the battery module 10 and the internal pressure rises, for example, as shown in FIG. is partially opened so that gas can pass through the insulating cover plate 600 and the top plate 211 and escape out of the module case 200 .
- a battery pack (not shown) according to an embodiment of the present invention includes one or more battery modules described above.
- the battery pack includes a pack case (not shown) for accommodating the battery module, various devices (not shown) for controlling charging and discharging of the battery module, such as a BMS (Battery Management System), a current sensor, a fuse, and the like. This may include more.
- BMS Battery Management System
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (10)
- 배터리 셀들을 구비한 셀 어셈블리;와 상기 셀 어셈블리를 수용하고 일측에 커넥터 장착구를 구비하는 모듈 케이스; 및상기 모듈 케이스의 내부에 구비되는 회로기판에 연결되고 상기 커넥터 장착구를 통해 적어도 일부분이 상기 모듈 케이스의 외측으로 노출되는 커넥터 조립체를 포함하고,상기 커넥터 조립체는,내측에 커넥터 핀들을 구비하고 상기 커넥터 장착구 밖으로 적어도 일부분이 노출되는 커넥터 하우징; 및 금속 재질로 형성되고 상기 모듈 케이스의 내부에서 상기 커넥터 하우징의 둘레를 에워싸는 난연블록;을 포함하며,상기 난연블록은 상기 모듈 케이스의 내부를 향하는 면에 불연 소재의 코팅층을 구비하는 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 난연블록은 알루미늄으로 이루어지고, 상기 코팅층은 세라믹 미립자를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제2항에 있어서,상기 난연블록은 상기 알루미늄으로 이루어진 층의 두께가 3mm~10mm 범위 이내이고, 상기 코팅층은 0.1mm~1mm 범위 이내로 마련된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 커넥터 하우징은,상기 커넥터 장착구의 외측으로 적어도 일부가 노출되는 제1 하우징; 및 상기 제1 하우징의 내부에 적어도 일부가 개재되는 제2 하우징을 포함하는 것을 특징으로 하는 배터리 모듈.
- 제4항에 있어서,상기 난연블록의 하면과 반대되는 난연블록의 상면에 배치되고 상기 제1 하우징의 외측 둘레를 감싸도록 마련된 실링 가스켓; 및상기 제1 하우징을 통과하여 상기 실링 가스켓의 상부에 배치되는 고정판를 포함하고,상기 고정판, 상기 실링 가스켓 및 상기 난연블록은 체결부재에 의해 일체로 고정 결합된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 모듈 케이스는,상기 셀 어셈블리를 내부에 수용할 수 있는 사각 관형으로 마련된 메인 하우징;과 상기 메인 하우징과 전방과 후방을 커버하도록 마련된 전방 커버 및 후방 커버를 포함하는 것을 특징으로 하는 배터리 모듈.
- 제6항에 있어서,상기 커넥터 장착구는 상기 전방 커버에 구비되고,상기 메인 하우징은 상기 셀 어셈블리의 상부를 커버하는 탑 플레이트, 상기 셀 어셈블리의 하부를 커버하는 바틈 플레이트, 상기 셀 어셈블리의 양쪽 측면부를 커버하는 좌측 사이드 플레이트 및 우측 사이드 플레이트를 포함하고,상기 탑 플레이트는 상기 배터리 셀의 발화시 가스 배출을 위한 벤팅홀을 구비하는 것을 특징으로 하는 배터리 모듈.
- 제7항에 있어서,전기 절연성 재질로 마련되고, 상기 셀 어셈블리의 상부와 상기 탑 플레이트 사이에 구비되는 절연 커버 플레이트;를 포함하고,상기 절연 커버 플레이트는 소정의 형태로 자르거나 베어서 끊은 하나 이상의 절단선을 구비하고,상기 절단선은 상기 벤팅홀과 대응하는 위치에 마련된 것을 특징으로 하는 배터리 모듈.
- 제1항에 있어서,상기 절단선은 아크(arc) 내지 C 자형으로 이루어진 것을 특징으로 하는 배터리 모듈.
- 제1항 내지 제9항 중 어느 한 항에 따른 배터리 모듈을 포함하는 배터리 팩.
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180043232A (ko) * | 2018-04-19 | 2018-04-27 | 주식회사 엘지화학 | 내열성이 향상된 이차전지용 전극리드 또는 알루미늄 파우치 및 이를 포함하는 이차전지 |
US20210036281A1 (en) * | 2019-07-31 | 2021-02-04 | Ferrari S.P.A. | Power storage system for an electric drive vehicle |
CN213660567U (zh) * | 2020-10-29 | 2021-07-09 | 比亚迪股份有限公司 | 电池包及车辆 |
KR20210122510A (ko) * | 2020-04-01 | 2021-10-12 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지 팩 |
CN113572184A (zh) * | 2021-08-19 | 2021-10-29 | 厦门海辰新能源科技有限公司 | 储能系统的储电模块和储能系统 |
KR20210148272A (ko) | 2019-04-17 | 2021-12-07 | 와커 헤미 아게 | 리튬 이온 배터리 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180043232A (ko) * | 2018-04-19 | 2018-04-27 | 주식회사 엘지화학 | 내열성이 향상된 이차전지용 전극리드 또는 알루미늄 파우치 및 이를 포함하는 이차전지 |
KR20210148272A (ko) | 2019-04-17 | 2021-12-07 | 와커 헤미 아게 | 리튬 이온 배터리 |
US20210036281A1 (en) * | 2019-07-31 | 2021-02-04 | Ferrari S.P.A. | Power storage system for an electric drive vehicle |
KR20210122510A (ko) * | 2020-04-01 | 2021-10-12 | 주식회사 엘지에너지솔루션 | 전지 모듈 및 이를 포함하는 전지 팩 |
CN213660567U (zh) * | 2020-10-29 | 2021-07-09 | 比亚迪股份有限公司 | 电池包及车辆 |
CN113572184A (zh) * | 2021-08-19 | 2021-10-29 | 厦门海辰新能源科技有限公司 | 储能系统的储电模块和储能系统 |
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