WO2022239933A1 - 전지 모듈 및 이를 포함하는 전지 팩 - Google Patents
전지 모듈 및 이를 포함하는 전지 팩 Download PDFInfo
- Publication number
- WO2022239933A1 WO2022239933A1 PCT/KR2022/001967 KR2022001967W WO2022239933A1 WO 2022239933 A1 WO2022239933 A1 WO 2022239933A1 KR 2022001967 W KR2022001967 W KR 2022001967W WO 2022239933 A1 WO2022239933 A1 WO 2022239933A1
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- WO
- WIPO (PCT)
- Prior art keywords
- module
- battery
- end plate
- bus bar
- housing
- Prior art date
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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
- H01M50/30—Arrangements for facilitating escape of gases
- H01M50/383—Flame arresting or ignition-preventing means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
-
- 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
- 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
-
- 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
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
-
- 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
- H01M50/591—Covers
-
- 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 a battery pack including the same, and more particularly, to a battery module with enhanced safety and a battery pack including the same.
- Secondary batteries are attracting much attention as energy sources for power devices such as electric bicycles, electric vehicles, and hybrid electric vehicles as well as mobile devices such as mobile phones, digital cameras, and laptop computers.
- 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 at least one battery module to form a battery pack.
- configuration is common. Since the battery cells constituting such a medium- or large-sized battery module are composed of secondary batteries capable of charging and discharging, such high-output and large-capacity secondary batteries generate a large amount of heat during charging and discharging processes.
- FIG. 1 is a view showing a state of a battery module installed in a conventional battery pack when ignited.
- FIG. 2 is part A-A of FIG. 1 , and is a view showing flames affecting adjacent battery modules when a battery module installed in a conventional battery pack is ignited.
- the conventional battery module 10 includes a battery cell stack 12 in which a plurality of battery cells 11 are stacked, a frame 20 for accommodating the battery cell stack 12, It includes end plates 40 formed on the front and rear surfaces of the battery cell stack 12, terminal bus bars 50 protruding out of the end plates, and the like.
- the battery cell stack 12 may be located in a closed structure by the combination of the frame 20 and the end plate 40 . Due to this, when the internal pressure of the battery cell 11 increases for reasons such as overcharging, high-temperature heat, gas, or flame may be released to the outside of the battery cell 11. At this time, one battery cell 11 The heat, gas, or flame emitted from the heat, gas, or flame may be transferred to other adjacent battery cells 11 at a narrow interval, and a continuous ignition phenomenon may be induced. In addition, heat, gas, or flame emitted from each battery cell 11 may be discharged toward an opening formed in the end plate 40, and in this process, located between the end plate 40 and the battery cell 11 A problem in which the bus bar 50 or the like may be damaged may occur.
- the plurality of battery modules 10 in the battery pack are disposed such that at least two end plates 40 face each other, heat, gas, or flame generated in the battery module 10 is dissipated from the outside of the battery module 10. If discharged to, it may affect the performance and stability of a plurality of battery cells 11 in another adjacent battery module 10.
- An object to be solved by the present invention is to provide a battery module having improved durability and safety by preventing continuous thermal runaway, and a battery pack including the same.
- a battery module includes a battery cell stack in which a plurality of battery cells are stacked in one direction, a module frame accommodating the battery cell stack, and a bus bar frame covering the front or rear surface of the battery cell stack. and an end plate coupled to the module frame and covering the bus bar frame, wherein at least one opening is formed in the end plate, a module connector is disposed in the opening of the end plate, and the module connector comprises the module It is mounted on one side of the bus bar frame by a housing that protects the connector.
- the bus bar frame may include a holding portion for holding the module connector, and the holding portion may include a distal end having a convex axial cross section.
- the end portion of the holding portion may include a first end portion and a second end portion axially separated.
- a slot into which the holder is inserted may be formed in the housing.
- the module connector may include a mounting hole into which the mounting unit is inserted, and an opening of the mounting hole may correspond to an opening of the slot.
- the holding part and the housing may be slidably coupled along one direction.
- a diameter of at least a portion of the slot may be larger than an opening diameter of the installation hole.
- a first coupling hole may be formed in the end plate, and the housing and the end plate may be coupled by inserting a coupling member into the first coupling hole.
- a second fastening hole corresponding to the first fastening hole is formed in the housing, the second fastening hole is located on a coupling surface of the housing, and the coupling surface is a surface perpendicular to the longitudinal direction of the battery cell stack.
- the number of first fastening holes may be two or more.
- a sealing member may be positioned between the housing and the end plate.
- the sealing member may have a closed curve shape in which both ends are connected.
- a battery pack according to another embodiment of the present invention includes at least one battery module described above.
- a thermal runaway phenomenon generated in one battery module may be prevented from propagating to an adjacent battery module.
- FIG. 1 is a view showing a state of a battery module installed in a conventional battery pack when ignited.
- FIG. 2 is a view taken along line A-A of FIG. 1 , and is a view showing the appearance of a flame affecting an adjacent battery module when a battery module mounted in a conventional battery pack is ignited.
- FIG 3 is a perspective view showing a battery module according to an embodiment of the present invention.
- FIG. 4 is an exploded perspective view of the battery module of FIG. 3;
- FIG. 5 is a perspective view of a battery cell included in the battery module of FIG. 3 .
- FIG. 6 is a perspective view of a bus bar frame included in the battery module of FIG. 3 .
- FIG. 7 is a perspective view of an end plate included in the battery module of FIG. 3 .
- FIG. 8 is a view for explaining a coupling structure of a module connector included in a conventional battery module.
- FIG. 9 is a perspective view of a connector assembly included in a battery module according to an embodiment of the present invention.
- FIG. 10 is a view of a sealing member included in the connector assembly of FIG. 9 .
- FIG. 11 is a view for explaining a coupling between a connector assembly included in a battery module and a sensing unit according to an embodiment of the present invention.
- FIG. 12 is a cross-sectional view taken along line C-C in FIG. 11;
- FIG. 13 to 15 are views for explaining coupling between a connector assembly included in a battery module and a bus bar frame according to an embodiment of the present invention.
- 16 and 17 are views for explaining coupling between a connector assembly included in a battery module and an end plate according to an embodiment of the present invention.
- FIG. 18 is a perspective view showing a battery module according to another embodiment of the present invention.
- FIG. 19 is a diagram of a gasket included in the battery module of FIG. 18 .
- 20 and 21 are diagrams for explaining a coupling between a gasket included in the battery module of FIG. 18 and a bus bar.
- 22 and 23 are views for explaining coupling between a gasket included in the battery module of FIG. 18 and an end plate.
- 24 to 26 are views for explaining another example of a gasket included in a battery module according to another embodiment of the present invention.
- planar it means when the corresponding part is viewed from above, and when it is referred to as “cross-section”, it means when the cross section of the corresponding part cut vertically is viewed from the side.
- FIG. 3 is a perspective view showing a battery module according to an embodiment of the present invention.
- 4 is an exploded perspective view of the battery module of FIG. 3;
- 5 is a perspective view of a battery cell included in the battery module of FIG. 4 .
- 6 is a perspective view of a bus bar frame included in the battery module of FIG. 3 .
- 7 is a perspective view of an end plate included in the battery module of FIG. 3 .
- the battery module 100 includes a battery cell stack 120 in which a plurality of battery cells 110 are stacked along one direction, and a battery cell stack 120 ( covering) may include the end plate 400, the bus bars 510 and 520 mounted on the bus bar frame 300, the connector assembly 600, and the sensing unit 700.
- the battery cell 110 may be provided in a pouch type capable of maximizing the number of stacks per unit area.
- the battery cell 110 provided in a pouch type may be manufactured by housing an electrode assembly including a positive electrode, a negative electrode, and a separator in a cell case 114 of a laminate sheet and then heat-sealing a sealing portion of the cell case 114.
- the battery cell 110 does not necessarily have to be provided in a pouch type, and may be provided in a prismatic, cylindrical or other various shapes under the level at which the storage capacity required by a device to be mounted in the future is achieved.
- the battery cell 110 may include two electrode leads 111 and 112 .
- the electrode leads 111 and 112 may each protrude from one end of the cell body 113 .
- one end of each electrode lead 111 and 112 is electrically connected to the positive electrode or negative electrode of the electrode assembly by being located inside the battery cell 110, and the other end of each electrode lead 111 and 112 is outside the battery cell 110 By being drawn out, it can be electrically connected to a separate member, for example, the bus bars 510 and 520.
- the electrode assemblies in the cell case 114 may be sealed by sealing parts 114sa, 114sb, and 114sc.
- the sealing parts 114sa, 114sb, and 114sc of the cell case 114 may be positioned on both ends 114a and 114b and one side part 114c connecting them.
- the cell case 114 generally has a laminate structure of a resin layer/metal thin film layer/resin layer.
- the cell case surface is made of an O (oriented)-nylon layer
- an adhesive member such as adhesive adhesive such as double-sided tape or chemical adhesive bonded by a chemical reaction during adhesion is applied to the surface of the cell case 114. It can be attached to form the battery cell stack 120.
- connection part 115 may refer to an area extending along the length direction from one end of the cell case 114 where the above-described sealing parts 114sa, 114sb, and 114sc are not located.
- a protrusion 110p of the battery cell 110 called a bat-ear may be formed at an end of the connecting portion 115 .
- the terrace portion 116 includes the electrode leads 111 and 112 whose parts protrude outside the cell case 114 based on the edge of the cell case 114 and the inside of the cell case 114. It may refer to an area between the cell bodies 113 located at .
- the battery cell 110 provided in the form of a pouch may have a length, width and thickness, and the longitudinal direction, width direction and thickness direction of the battery cell 110 may be mutually perpendicular to each other.
- the length direction of the battery cell 110 may be defined according to the direction in which the electrode leads 111 and 112 protrude from the cell case 114 .
- the longitudinal direction of the battery cell 110 may be defined as an x-axis direction or a -x-axis direction.
- the width direction of the battery cell 110 is the z-axis directed from one side portion 114c of the battery cell 110 to the connection portion 115 or from the connection portion 115 to one side portion 114c, as shown in FIG. direction or -z axis direction.
- the thickness direction of the battery cell 110 may be defined as a y-axis direction or a -y-axis direction perpendicular to the width direction and the length direction.
- the battery cell stack 120 may include a plurality of electrically connected battery cells 110 stacked along one direction.
- the direction in which the plurality of battery cells 110 are stacked (hereinafter referred to as 'stacking direction') may be the y-axis direction (or -y-axis direction) as shown in FIGS. 3 and 4, and hereinafter, the 'axis direction'.
- the expression 'direction' may be interpreted as including both +/- directions).
- the direction from the front to the rear of the battery cell stack 120, or the opposite direction may be defined as the longitudinal direction of the battery cell stack 120, and may be the x-axis direction.
- a direction from the upper surface to the lower surface of the battery cell stack 120, or the opposite direction may be defined as the width direction of the battery cell stack 120, and may be a z-axis direction.
- the longitudinal direction of the battery cell stack 120 may be substantially the same as the longitudinal direction of the battery cell 110 .
- the electrode leads 111 and 112 of the battery cell 110 may be positioned on the front and rear surfaces of the battery cell stack 120 .
- the bus bars 510 and 520 of the battery module 100 may be disposed close to the front and rear surfaces of the battery cell stack 120 to easily form an electrical connection with the electrode leads 111 and 112 .
- the module frame 200 may be for protecting the battery cell stack 120 and electrical components connected thereto from external physical impact.
- the module frame 200 may be accommodated in the internal space of the battery cell stack 120 and the electrical component module frame 200 connected thereto.
- the module frame 200 includes an inner surface and an outer surface, and the inner space of the module frame 200 may be defined by the inner surface.
- the structure of the module frame 200 may vary.
- the structure of the module frame 200 may be a structure of a mono frame.
- the mono frame may be in the form of a metal plate material in which the upper surface, the lower surface, and both sides are integrated.
- the mono frame can be made by extrusion molding.
- the structure of the module frame 200 may be a structure in which a U-shaped frame and an upper plate (upper surface) are combined.
- the structure of the module frame 200 may be formed by combining the upper plate with the upper side of the U-shaped frame, which is a metal plate material in which the lower surface and both sides are combined or integrated, Each frame or plate can be made by press molding.
- the structure of the module frame 200 may be provided in an L-shaped frame structure in addition to a mono frame or a U-shaped frame, and may be provided in various structures not described in the above examples.
- the structure of the module frame 200 may be provided in an open form along the longitudinal direction of the battery cell stack 120 . Front and rear surfaces of the battery cell stack 120 may not be covered by the module frame 200 .
- the electrode leads 111 and 112 of the battery cell 110 may not be covered by the module frame 200 .
- the front and rear surfaces of the battery cell stack 120 may be covered by a bus bar frame 300, an end plate 400, or bus bars 510 and 520, which will be described later, through which the front surface of the battery cell stack 120 And the rear surface may be protected from external physical impact.
- a heat conducting member 180 may be provided between the battery cell stack 120 and the inner surface of the module frame 200 .
- the heat conducting member 180 may be for dissipating/transmitting heat generated from the battery cell 110 to the outside via the module frame 200 .
- the heat conducting member 180 may be formed of a material having excellent thermal conductivity.
- the heat conducting member 180 may include an adhesive material.
- the heat conducting member 180 may include at least one of a silicone-based material, a urethane-based material, and an acrylic-based material.
- the thermally conductive member 180 may be formed by injecting a thermally conductive resin between the battery cell stack 120 and one of the inner surfaces of the module frame 200 .
- the heat conducting member 180 may be a plate-shaped member.
- the heat conducting member 180 may be positioned on the z-axis of the battery cell stack 120, and the heat conducting member 180 extends to the bottom surface (or bottom portion) of the battery cell stack 120 and the module frame 200. may be referred to) may be located between.
- a compression pad 190 may be positioned between the battery cell stack 120 and one of the inner surfaces of the module frame 200 . At this time, the compression pad 190 may be located on the y-axis of the battery cell stack 120, and at least one of the two battery cells 110 at both ends of the battery cell stack 120 and the surface can face
- the bus bar frame 300 is located on one side of the battery cell stack 120, covers one side of the battery cell stack 120, and guides the connection between the battery cell stack 120 and an external device. It may be for
- the bus bar frame 300 may be located on the front or rear surface of the battery cell stack 120 .
- At least one of the bus bars 510 and 520 and the connector assembly 600 may be mounted on the bus bar frame 300 .
- one surface of the bus bar frame 300 is connected to the front or rear surface of the battery cell stack 120, and the other surface of the bus bar frame 300 is a bus bar ( 510 and 520) and/or the connector assembly 600.
- a mounting portion 302 for connection with the connector assembly 600 may be formed in the bus bar frame 300 .
- the bus bar frame 300 may include an electrically insulating material.
- the bus bar frame 300 may limit the contact of the bus bars 510 and 520 with other parts of the battery cells 110 other than the parts bonded to the electrode leads 111 and 112, and prevent an electrical short circuit from occurring. have.
- the bus bar frame 300 may be two, and the first bus bar frame (which may be referred to as reference number 300) located on the front surface of the battery cell stack 120 and the battery cell stack 120 It may include a second bus bar frame (not shown) located on the rear surface.
- the bus bar frame 300 may be coupled to the upper cover 330 to form a bus bar assembly.
- the upper cover 330 has a size corresponding to the upper surface of the battery cell stack 120 and may cover the corresponding portion. In the process of accommodating the battery cell stack 120 into the module frame 200, the upper cover 330 may protect the sensing unit 700 and the like.
- Both ends of the upper cover 330 in the longitudinal direction may be coupled to the bus bar frame 300 .
- a slit 306 may be formed in an upper portion of the bus bar frame 300, and hooking parts 336 may be formed at both ends of the upper cover 330 in the longitudinal direction. As one end of the hooking part 336 is inserted, the hooking part 336 and the slit 306 may be fastened.
- the hanging portion 336 may have a U-shape or a V-shape, and an upper end of the bus bar frame 300 may be positioned inside the U-shaped bend.
- Locking jaws protruding toward each other are formed at both ends of the U-shape of the locking portion 336, and the locking jaws prevent the locking portion 336 from being disengaged from the slit 306 after being fastened to the slit 306.
- the above-described coupling between the slit 306 and the hanging portion 336 may be a flexible coupling, and the bus bar frame 300 rotates with respect to the upper cover 330 through the slit 306 and the hanging portion 336. can possibly be combined.
- the end plate 400 may be to protect the battery cell stack 120 and electrical components connected thereto from external physical impact by sealing the open surface of the module frame 200 .
- the end plate 400 may be made of a material having a predetermined strength.
- the end plate 400 may include a metal such as aluminum.
- the end plate 400 may be combined (bonded, sealed, or sealed) with the module frame 200 while covering the bus bar frame 300 or the bus bars 510 and 520 located on one surface of the battery cell stack 120. have. Each corner of the end plate 400 may be coupled to a corresponding corner of the module frame 200 by welding or the like.
- an insulating cover 800 for electrical insulation may be positioned between the end plate 400 and the bus bar frame 300 .
- the insulating cover 800 may be located on the inner surface of the end plate 400 and may be attached to the inner surface of the end plate 400, but this is not necessarily the case.
- the end plate 400 may be two, and may include a first end plate positioned on the front surface of the battery cell stack 120 and a second end plate positioned on the rear surface of the battery cell stack 120.
- the first end plate may be coupled to the module frame 200 while covering the first bus bar frame on the front surface of the battery cell stack 120, and the second end plate covers the second bus bar frame while covering the module frame ( 200) can be combined.
- the bus bars 510 and 520 may be mounted on one surface of the bus bar frame 300 and electrically connect the battery cell stack 120 or the battery cells 110 and an external device circuit.
- the bus bars 510 and 520 are positioned between the battery cell laminate 120 or the bus bar frame 300 and the end plate 400 to be protected from external impact, etc., and durability degradation due to external moisture can be minimized.
- the bus bars 510 and 520 may be electrically connected to the battery cell stack 120 through the electrode leads 111 and 112 of the battery cell 110 .
- the electrode leads 111 and 112 of the battery cell 110 may pass through slits formed in the bus bar frame 300 and then be bent and connected (joined or combined) with the bus bars 510 and 520.
- welding can be applied as an example.
- the battery cells 110 constituting the battery cell stack 120 may be connected in series or parallel by the bus bars 510 and 520 .
- the bus bars 510 and 520 may include a terminal bus bar 520 for electrically connecting one battery module 100 to another battery module 100 . At least a part of the terminal bus bar 520 may be exposed to the outside of the end plate 400 in order to be connected to another external battery module 100, and the end plate 400 has a terminal bus bar opening 400H for this purpose. may be provided.
- the insulating cover 800 coupled to the end plate 400 may also have a corresponding second terminal bus bar opening 800H.
- the terminal bus bar 520 may further include a protruding portion protruding toward the outside of the battery module 100, and the protruding portion may extend toward the battery module 100 through the terminal bus bar opening 400H. ) can be exposed to the outside.
- the terminal bus bar 520 may be connected to another battery module 100 or a battery disconnect unit (BDU) through a protrusion exposed through the terminal bus bar opening 400H, and form a high voltage (HV) connection with them.
- the HV connection is a connection serving as a power source for supplying power, and means a connection between battery cells 110 or a connection between battery modules 100 .
- the connector assembly 600 and the sensing unit 700 may detect and control phenomena such as overvoltage, overcurrent, and overheating of the battery cell 110 .
- the connector assembly 600 and the sensing unit 700 are for low voltage (LV) connection, where the LV connection may mean a sensing connection for sensing and controlling the voltage of a battery cell.
- Voltage information and temperature information of the battery cell 110 may be transmitted to an external battery management system (BMS) through the connector assembly 600 and the sensing unit 700 .
- BMS battery management system
- Connector assembly 600 may include a modular connector 610 .
- the module connector 610 may transfer collected data to an external control device and receive signals from the external control device.
- the module connector 610 may transmit data obtained from the temperature sensor 730 and/or the sensing terminal 720 to a battery management system (BMS), and the BMS may transmit the voltage data of the battery cells 110 based on the collected voltage data. Charging and discharging can be controlled.
- BMS battery management system
- the connector assembly 600 may be mounted on the aforementioned bus bar frame 300.
- the connector assembly 600 may be connected to the mounting portion 302 of the bus bar frame 300. At least a portion of the connector assembly 600 may be exposed to the outside of the end plate 400, and a module connector opening 400L for this may be provided in the end plate 400.
- the insulating cover 800 coupled to the end plate 400 may also have a corresponding second module connector opening 800L.
- the sensing unit 700 includes a sensing terminal 720 for sensing the voltage value of the bus bars 510 and 520, a temperature sensor 730 for sensing the temperature inside the battery module 100, and a connecting member 710 connecting them.
- a sensing terminal 720 for sensing the voltage value of the bus bars 510 and 520
- a temperature sensor 730 for sensing the temperature inside the battery module 100
- connection member 710 may be disposed in a form extending along the longitudinal direction from the upper surface of the battery cell stack 120 .
- the connection member may be a flexible printed circuit board (FPCB) or a flexible flat cable (FFC).
- an ignition phenomenon may occur inside the battery module 100 in which the battery cells 110 are stacked at a high density.
- gas or the like is discharged through the openings 400H and 400L provided in the end plate, so that the terminal bus bar 520 or the like is damaged or the battery module 100 heats up.
- Gas or flame is transferred to the battery module 100 adjacent thereto, so that a continuous ignition phenomenon may occur.
- FIG. 8 is a view for explaining a coupling structure of a module connector included in a conventional battery module.
- a module connector 60 connected to a sensing unit 70 may be provided in a conventional battery module 10 .
- the module connector 60 may be disposed between the bus bar frame 30 and the end plate 40 in the completed battery module 10 .
- a connector gasket 62 may be provided around the module connector 60 to seal a gap between the opening formed in the end plate 40 and the module connector 60 .
- the connector gasket 62 provided in the conventional battery module 10 has a narrow width, it is difficult to secure a wide airtight surface B1 between the end plate 40 and the module connector 60.
- the connector gasket 62 may be compressed in the longitudinal direction of the battery cell 11 in the assembly process, but the range allowed by the connector gasket 62 is narrow. There was a problem.
- a connector assembly 600 capable of more stably mounting the module connector inside the battery module, forming a wide airtight surface with the end plate, and flexibly responding to dimensional differences of battery cells and the like will be described. do.
- the end plate 400 includes the insulating cover 800 or other members attached/coupled to the inner surface of the end plate 400.
- a gap between the module connector opening 400L and the module connector 610 may be interpreted as a gap between the second module connector opening 800L and the module connector 610 .
- a gap space between the housing 620 and the end plate 400 may be interpreted as a gap space between the housing 620 and the insulating cover 800 .
- FIG. 9 is a perspective view of a connector assembly included in a battery module according to an embodiment of the present invention
- FIG. 10 is a view of a sealing member included in the connector assembly of FIG. 9
- FIG. 11 is a view of an embodiment of the present invention
- 12 is a cross-sectional view taken along line C-C of FIG. 11 .
- a connector assembly 600 may include a module connector 610 and a housing 620 .
- the housing 620 will be mainly described.
- the housing 620 may protect the module connector 610 from external influences.
- the outer surface of the module connector 610 may be blocked from external moisture or external air by the housing 620 .
- the housing 620 may wrap around the module connector 610 .
- the housing 620 may be an injection-molded product manufactured by applying an overmolding process on the module connector 610 .
- the housing 620 may be integrated with the module connector 610 .
- Housing 620 may be integrated with module connector 610 to form connector assembly 600 .
- the housing 620 may seal a gap between the module connector 610 and the module connector opening 400L of the end plate 400 .
- the size of the module connector opening 400L may be larger than the size of the exposed portion of the module connector 610, and when the inside of the battery module 100 is ignited, through this gap Gases, sparks, flames, etc. may be emitted to the outside.
- the housing 620 surrounds the module connector 610 and may have an upper surface extending from the circumference of the exposed portion of the module connector 610 . Since the upper surface of the housing 620 is formed to correspond to the inner surface of the end plate 400, the gap between the module connector opening 400L and the module connector 610 can be filled, filled, or covered by the housing 620. You will be able to. At this time, the size of the upper surface of the connector assembly 600 may be larger than the size of the module connector opening 400L.
- the housing 620 may form a wide airtight surface between the module connector 610 and the end plate 400 . Since the housing 620 is formed to correspond to the inner surface of the end plate 400, the module connector 610 can be in contact with the end plate 400 or the like through the housing 620 on a wide surface or positioned close to it. Therefore, the housing 620 of this embodiment can form a wider airtight surface between the module connector 610 and the end plate 400 than in the case of using the conventional connector gasket 62 having a narrow width, Through 620, the connector assembly 600 can be stably coupled, fixed, and supported with the end plate 400.
- a surface of the housing 620 in contact with or close to the end plate 400 may be referred to as a corresponding surface.
- the connector assembly 600 may have a stepped cross section, and one surfaces of the housing 620 forming the stepped shape, for example, the housing 620 from above (on the z-axis) )
- the top surface, which is confirmed when viewing, or the front surface, which is checked when viewing the housing 620 from the front (on the x-axis) may contact or be located close to the end plate 400 in the complete body of the battery module 100.
- the corresponding surface of the housing 620 may be interpreted as including at least a portion of one surface of the stepped housing 620 .
- these corresponding surfaces can be confirmed in more detail through FIG. 17 to be described later.
- the housing 620 may be for coupling (or mounting) the module connector 610 inside the battery module 100 .
- the housing 620 may be for connecting the module connector 610 to the bus bar frame 300 and the end plate 400 .
- the housing 620 may be for positioning the module connector 610 between the bus bar frame 300 and the end plate 400 .
- the housing 620 may be mounted on the bus bar frame 300 through the slot 622 and coupled to the end plate 400 through the coupling hole 624. A detailed description of the slot 622 and the coupling hole 624 will be described later with reference to FIGS. 13 to 17 .
- the housing 620 may be formed to cover at least a portion of the module connector openings 400L of the end plate 400 and may be provided in a shape corresponding to an inner surface of the end plate 400 .
- a gap space may be formed between the housing 620 and the end plate 400 after assembly.
- Such a gap space may cause flow between the housing 620 and the end plate 400 and may deteriorate the airtightness of the housing 620 and the end plate 400 .
- the connector assembly 600 of this embodiment may be provided with a sealing member 630 to improve sealing between the housing 620 and the end plate 400 .
- the connector assembly 600 may be described as including the sealing member 630 .
- 'gap space' and 'gap' may be understood as being distinct from each other, but may be collectively referred to as the general word 'gap' in a wide range.
- the sealing member 630 may form a seal between the housing 620 and the end plate 400 .
- the sealing member 630 may fill a gap between the housing 620 and the end plate 400 by contacting the housing 620 and the end plate 400 .
- the sealing member 630 may prevent the two members from moving relative to each other by generating a gap space between the housing 620 and the end plate 400 in the complete body of the battery module 100 .
- the housing 620 and the end plate 400 are fixed to each other by the sealing member 630 and can be supported by each other.
- the sealing member 630 may prevent gas from being discharged through the openings 400L and 400H formed in the end plate 400 when the gas or the like moves along the gap space.
- the sealing member 630 may be disposed on a corresponding surface of the housing 620 . At least a portion of the sealing member 630 may protrude from the corresponding surface of the housing 620 . This may be for the sealing member 630 located on one surface of the housing 620 to contact the end plate 400 . This may be to fix the housing 620 and the end plate 400 to each other as the sealing member 630 located on one surface of the housing 620 is pressed by the end plate 400 .
- the sealing member 630 may be disposed with a slight distance from the terminal of the module connector 610 . This may be in consideration of the corresponding surface of the housing 620 widely extending around the terminal of the module connector 610 .
- the housing 620 may be provided with a groove for disposing the sealing member 630 at a fixed position, and the position of the sealing member 630 may be fixed by the groove formed in the housing 620 .
- the sealing member 630 may have a linear shape or a band shape. Specifically, the sealing member 630 may have a shape of a closed curve connected at both ends. If the sealing member 630 has a shape of a closed curve, the overall shape of the sealing member 630 is not deformed, so assembling or designing may be facilitated. However, since the shape of the sealing member 630 is not limited by the above-described drawings, it is obvious that the sealing member 630 may be provided in various shapes such as a plane shape.
- the sealing member 630 is shown as having a slightly rectangular shape in the front view of FIG. 10(c) in which perspective on the x-axis is ignored, but as shown in the side view of FIG. 10(b), by crossing a predetermined section on the x-axis, the stairs may have a mold shape. This may correspond to the cross-sectional shape of the corresponding surface of the housing 620 described above.
- the sealing member 630 may be an elastic body.
- the sealing member 630 may cover a slightly variable gap space between the housing 620 and the end plate 400 by being partially compressed by an external force.
- the size may mean thickness or height (x-axis direction based on FIG. 10).
- the sealing member 630 may be made of a heat-resistant or flame-retardant material, which may be prevented from being damaged by charging/discharging or thermal runaway of the battery cell 110 .
- the sealing member 630 may be made of flame retardant foam, resin, silicone, rubber or other materials similar thereto.
- the aforementioned connector assembly 600 may be coupled to the sensing unit 700 .
- welding such as soldering may be applied.
- FIG. 13 to 15 are views for explaining coupling between a connector assembly included in a battery module and a bus bar frame according to an embodiment of the present invention.
- the housing 620 may include a slot 622 forming a coupling between the module connector 610 and the bus bar frame 300 .
- a ring-shaped mounting hole 612 may be formed in the module connector 610, and the mounting portion 302 of the bus bar frame 300 is inserted into the mounting hole 612, so that the module connector 610 and the bus bar frame 300 may be coupled.
- the mounting portion 302 may have a rod shape protruding from one side of the bus bar frame 300 .
- the slot 622 may be in the form of a hole penetrating the housing 620 , and an opening of the slot 622 may correspond to an opening of the mounting hole 612 .
- the mounting portion 302 may be inserted into the slot 622 corresponding to the mounting hole 612, through which the housing 620 and the bus bar frame 300 may be coupled.
- the connector assembly 600 can be slidably coupled to the bus bar frame 300.
- the relative distance between the connector assembly 600 and the bus bar frame 300 may be adjusted. Specifically, when a compressive force is applied in the longitudinal direction (x-axis direction) from the battery cell 110 due to a difference in size of the battery cell 110, the connector assembly 600 is appropriately matched to the compressive force from the bus bar frame 300 can be moved
- the connector assembly 600 may be movable in one direction with respect to the bus bar frame 300 by the slot 622 .
- the holder 302 is located inside the slot 622, and the connector assembly 600 is moved in the longitudinal direction (x-axis direction) of the battery cell stack 120 along the length of the holder 302. , Movement of the connector assembly 600 in the vertical (z-axis) or left-right (y-axis) direction with respect to the bus bar frame 300 may be prevented by the slot 622 .
- the distal end of the holding part 302 may be designed to have a larger diameter than other parts, and through this, the mounting hole 612 may be prevented from being separated from the holding part 302. .
- the end of the holding portion 302 may have a convex shape or a dome shape.
- the distal end of the mounting portion 302 may have a tapering shape that narrows as it approaches the distal end.
- At least a part of the distal end of the holding portion 302 may be separated.
- the distal end of the holding portion 302 may include two parts axially cut, and the two parts may be positioned so that their axial end surfaces face each other. This may be to adjust the diameter of the distal end of the mounting portion 302 by spacing or contacting the two separated parts. If the diameter of the distal end of the holding portion 302 is adjusted, insertion of the holding portion 302 into the holding hole 612 may not be hindered by the end of the holding portion 302 having a relatively large diameter.
- the distal diameter of the mounting portion 302 may increase, and through this, the mounting hole 612 and the mounting portion ( Separation between the two members can be prevented by abutting the ends of 302).
- the distal end of the mounting portion 302 may be referred to as a 'end portion', and the two portions axially cut may be referred to as a first distal portion and a second distal portion.
- the end of the holding portion 302 may be adjusted according to the size of the inner diameter of the slot 622 .
- a diameter of at least a portion of the slot 622 may be greater than an opening diameter of the installation hole 612 .
- a diameter of at least a portion of the slot 622 may be larger than a diameter of an inner circumferential surface of the mounting hole 612 .
- a diameter of at least a portion of the slot 622 may be larger than a diameter of an outer circumferential surface of the mounting hole 612 .
- the two ends of the axially cut mounting portion 302 can be widened in the first section, and accordingly A rear surface of the distal end of the mounting portion 302 may easily abut the mounting hole 612 .
- the first section may be a section close to the mounting hole 612 in the slot 622 .
- the distal end of the mounting portion 302 since the distal end of the mounting portion 302 has a tapering shape that becomes narrower as it approaches the distal end, it leaves the first section inside the slot 622 and enters a second section with a relatively narrow diameter. It may not be difficult to do.
- the second section may be located outside the first section, that is, in a direction toward the outside of the battery module 100 or in a direction where the end plate 400 is located.
- 16 and 17 are views for explaining coupling between a connector assembly included in a battery module and an end plate according to an embodiment of the present invention.
- the housing 620 may include a coupling hole 624 for coupling between the module connector 610 and the end plate 400 .
- the coupling hole 624 may be formed on the coupling surface of the housing 620 .
- the coupling surface may refer to a surface extending in the vertical (z-axis) direction from the body portion accommodating the module connector 610 in the housing 620 .
- the bonding surface may be a surface perpendicular to the longitudinal direction (x-axis) direction of the battery cell stack 120 .
- the coupling surface may be a surface corresponding to the end plate 400 .
- the coupling surface may be a surface in contact with the end plate 400 .
- contact with the end plate 400 may mean contact with a member (eg, the insulating cover 800) attached to the end plate 400 .
- the coupling hole 624 may be one or more, preferably two or more or four or more. As shown in FIG. 9 , the coupling hole 624 may be located close to each vertex on the front surface of the housing 620 . Since the coupling holes 624 are formed on all sides of the housing 620, the housing 620 can be more stably fixed.
- end plate coupling holes 404 may be formed in the end plate 400 .
- the position of the end plate coupling hole 404 in the end plate 400 may correspond to the position of the coupling hole 624 in the housing 620 .
- the fastening member 440 may be inserted into the end plate coupling hole 404 from the outer surface of the end plate 400, and when the fastening member 440 is inserted into the coupling hole 624, the end plate 400 and the housing 620 may be fixed.
- the outer surface of the end plate 400 may be a surface facing the outside of the battery module 100 from the end plate 400 .
- the fastening member 440 may be a bolt, screw, or other members.
- the end plate coupling hole 404 may be referred to as a first coupling hole, and the coupling hole 624 may be referred to as a second coupling hole.
- the above-described end plate coupling hole 404 and/or coupling hole 624 may be formed in advance before assembling the battery module 100, or may be formed by inserting the fastening member 440 during the assembly process.
- female threads or grooves corresponding to the male threads of the fastening member 440 may be provided in the aforementioned end plate coupling holes 404 and/or coupling holes 624, but this is not necessarily the case.
- terminal bus bar openings 400H may also be formed in the above-described end plate 400 of the battery module 100 in addition to the module connector openings 400L. Therefore, even if the module connector opening 400L is sealed by the connector assembly 600, when the battery module 100 internally ignites, gas, spark, flame, etc. are released to the terminal bus bar opening 400H, resulting in continuous thermal runaway. There is a possibility that this may occur.
- a gasket 900 capable of sealing the opening of the terminal bus bar 400H and effectively responding to an increase in internal pressure will be described below.
- FIG. 18 is a perspective view showing a battery module according to another embodiment of the present invention
- FIG. 19 is a diagram of a gasket included in the battery module of FIG. 18,
- FIGS. 20 and 21 are a gasket and a bus included in the battery module of FIG. 18 22 and 23 are views for explaining the coupling of the gasket included in the battery module of FIG. 18 and the end plate.
- FIG. 18 shows a battery module in which an end plate is omitted.
- the battery module 100 of FIG. 18 may be described as including all of the contents of FIGS. 3 to 17 described above in addition to including the gasket 900 . Therefore, detailed descriptions of the contents overlapping with those described above will be omitted.
- the size of the terminal bus bar opening 400H is mainly determined by the circumference of the terminal bus bar 520, but for ease of assembly or due to manufacturing process reasons, the size of the terminal bus bar opening 400H is the terminal bus bar ( 520), and gases, sparks, flames, etc. may be emitted to the outside through these gaps.
- the bus bar frame 300 and the end plate 400 around the terminal bus bar 520 protruding to the outside of the battery module 100 do not completely come into close contact, this gap space during internal ignition of the battery module 100
- gasket 900 of the present embodiment may form a seal around the terminal bus bar 520, and through this, gas discharge through the terminal bus bar opening 400H may be minimized.
- the gasket 900 of this embodiment may form a seal between the terminal bus bar 520 and the terminal bus bar opening 400H.
- the gasket 900 may seal a gap between the protrusion of the terminal bus bar 520 and the terminal bus bar opening 400H.
- the gasket 900 may form a seal between the bus bar frame 300 and the end plate 400 around the terminal bus bar opening 400H.
- the gasket 900 may seal a gap space around the terminal bus bar 520 .
- the gasket 900 may be inserted into the terminal bus bar 520 before assembling the end plate 400 . At one end of the terminal bus bar 520, the gasket 900 may protrude through the gasket hole 910.
- the gasket 900 includes a gasket hole 910 into which the terminal bus bar 520 can be inserted, a lip portion 920 formed around the gasket hole 910, and a contact portion 930 extending from the gasket hole 910. ) may be included.
- the lip portion 920 of the gasket 900 may come into close contact with the protruding portion of the terminal bus bar 520 .
- the lip portion 920 may be a portion extending from the circumference of the gasket hole 910 in the protruding direction (x-axis direction) of the terminal bus bar 520 .
- the lip portion 920 may be a stepped portion of the gasket 900 .
- the terminal bus bar 520 may be located inside the lip part 920, and the terminal bus bar opening 400H or the inside of the hole may be located outside the lip part 920.
- the inner surface of the lip part 920 may be in close contact with the circumference of the terminal bus bar 520, and the outer surface of the lip part 920 may be in close contact with the terminal bus bar opening 400H or the inside of the opening.
- the gap between the terminal bus bar 520 and the terminal bus bar opening 400H may be filled by the gasket 900.
- the gasket 900 may prevent gas from being discharged through the terminal bus bar opening 400H. Relative movement of the protrusion of the terminal bus bar 520 and the opening of the terminal bus bar 400H may be prevented by the gasket 900, and the two parts may not collide with each other due to an external force.
- the contact portion 930 of the gasket 900 may be a portion radially expanding or extending from the circumference of the gasket hole 910 .
- the contact portion 930 includes a first contact surface 932 in contact with the outer surface of the bus bar frame 300 around the terminal bus bar 520 and a second contact surface 934 in contact with the inner surface of the end plate 400.
- the inner surface or the outer surface may be described as a surface facing the inside or an outside of the battery module 100 in each member.
- contact with the end plate 400 may mean contact with a member (eg, the insulating cover 800) attached to the end plate 400 .
- the contact portion 930 may be positioned between the bus bar frame 300 and the end plate 400 and may fill a gap between the two members.
- the gasket 900 may prevent gas from being discharged through the terminal bus bar opening 400H as gas or the like moves along the gap space.
- the bus bar frame 300 and the end plate 400 are fixed to each other by the gasket 900 and can be supported by each other.
- the contact portion 930 can fill the space even when there is a slight separation between the lip portion 920 and the terminal bus bar opening 400H depending on the thickness of the lip portion 920 . Accordingly, a seal may be more completely formed between the terminal bus bar 520 and the terminal bus bar opening 400H by the contact portion 930 .
- the gasket 900 may be an elastic body.
- the gasket 900 may cover the somewhat variable gap or gap space by being partially compressed by an external force.
- the gasket 900 which is an elastic body, is designed to be somewhat larger than the normal size to be covered by the gasket 900, the size can be adjusted because it is compressible.
- the gasket 900 may be made of a heat-resistant or flame-retardant material, which may be prevented from being damaged by charging/discharging or thermal runaway of the battery cell 110 .
- gasket 900 may be provided with flame retardant foam, resin, silicone, rubber, or other similar material.
- the gasket 900 has a compressive force in the longitudinal direction (x-axis) of the battery cell stack 120 can work
- the gasket 900 of this embodiment may include a protrusion 940 .
- the protrusion 940 may be referred to as an embossing, a raised portion, or a protruding portion.
- the protrusion 940 can effectively respond to the compressive force acting in the longitudinal direction (x-axis) of the battery cell stack 120 .
- the gasket 900 may be provided as an elastic body, it may respond somewhat to the compressive force.
- the gasket 900 is provided with the protrusion 940 .
- the gasket 900 can improve compressibility, and can effectively seal around the protrusion of the terminal bus bar 520 even in the event of internal ignition.
- the protrusion 940 may protrude from the first contact surface 932 or the second contact surface 934 of the contact part 930 .
- the protrusion 940 may be a portion protruding toward the inside or outside of the battery module 100 from the contact portion 930 . Since the protrusion 940 is partially compressible in response to the aforementioned compressive force, it may partially absorb external force transmitted to the end plate 400 due to an increase in internal pressure.
- the gap space between the bus bar frame 300 and the end plate 400 may be greater than the thickness of the contact portion 930, and the protrusion 940 protrudes from one surface of the contact portion 930 Since it can be in contact with the bus bar frame 300 or the end plate 400, it is possible to compensate for this dimensional difference.
- the protrusion 940 may be formed on both the first contact surface 932 and the second contact surface 934 of the contact part 930, but may also be formed only on one of the two surfaces of the contact part 930.
- the heights of the protrusions 940 formed on each surface of the contact portion 930 may be different from each other.
- contact with the end plate 400 may mean contact with a member (eg, the insulating cover 800) attached to the end plate 400 .
- the protrusion 940 may be provided in a shape including a plurality of figures radially spaced apart from each other around the gasket hole 910 . That is, the protrusions 940 may be provided in a concentric pattern. Each of the protrusions 940 may be positioned at regular intervals, which may be to equally cover the first contact surface 932 and the second contact surface 934 of the contact part 930 . Since the shape of the protrusion 940 is not limited by the above-described drawings, the shape of the protrusion 940 may be formed differently from that shown.
- the heights of the protrusions included in the protrusion 940 may be constant or may be different.
- the height of the protrusions may be constant, and the value may be within 1 mm.
- the distance between the gasket 900 and the bus bar frame 300 or the end plate 400 it may be desirable to be within 0.1 to 0.5 mm.
- the heights of the protrusions may gradually increase or decrease as the distance from the gasket hole 910 increases. That is, the protrusion 940 may be provided to have a stepped cross section. At this time, when the gasket hole 910 is formed to gradually decrease in height, it is possible to more effectively compensate for a dimensional difference occurring around the terminal bus bar opening 400H.
- the description of the protrusion 940 does not exclude an example in which the gasket 900 without the protrusion 940 is provided in the battery module 100 of the present embodiment.
- 24 to 26 are views for explaining another example of a gasket included in a battery module according to another embodiment of the present invention.
- a gasket 900 having no protrusions 940 may be provided in the battery module 100 of this embodiment. Since the gasket 900 of this example can be understood through the above description of FIGS. 18 to 23 , a detailed description thereof will be omitted.
- the battery pack may include one or more battery modules according to the present embodiment, and may have a structure in which a battery management system (BMS) for managing temperature or voltage of the battery, a cooling device, and the like are added and packed. .
- BMS battery management system
- a battery module and a battery pack including the battery module may be applied to various devices.
- Such a device may be applied to means of transportation such as an electric bicycle, an electric vehicle, or a hybrid vehicle, but the present invention is not limited thereto and is applicable to various devices capable of using a battery module and a battery pack including the battery module, which is also applicable to the present invention. It belongs to the scope of the right of invention.
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- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Description
Claims (13)
- 복수의 전지셀들이 일방향으로 적층된 전지셀 적층체,상기 전지셀 적층체를 수용하는 모듈 프레임,상기 전지셀 적층체의 전면 또는 후면을 덮는 버스바 프레임 및상기 모듈 프레임과 결합하고, 상기 버스바 프레임을 덮는 엔드 플레이트를 포함하고,상기 엔드 플레이트에는 적어도 하나의 개구부가 형성되고,상기 엔드 플레이트의 개구부에는 모듈 커넥터가 배치되며,상기 모듈 커넥터는 상기 모듈 커넥터를 보호하는 하우징에 의해 상기 버스바 프레임의 일면에 장착되는 전지 모듈.
- 제1항에 있어서,상기 버스바 프레임은 상기 모듈 커넥터를 거치하기 위한 거치부를 포함하고, 상기 거치부는 축상 단면이 볼록한 말단부를 포함하는 전지 모듈.
- 제2항에 있어서,상기 거치부의 말단부는 축상 분리된 제1 말단부 및 제2 말단부를 포함하는 전지 모듈.
- 제2항에 있어서,상기 하우징에는 상기 거치부가 삽입되는 슬롯이 형성되는 전지 모듈.
- 제4항에 있어서,상기 모듈 커넥터는 상기 거치부가 삽입되는 거치홀을 포함하고,상기 거치홀의 개구는 상기 슬롯의 개구와 대응되는 전지 모듈.
- 제4항에 있어서,상기 거치부가 상기 슬롯의 내부에서 슬라이딩됨으로써상기 거치부와 상기 하우징은 일 방향을 따라 슬라이딩 가능하게 결합되는 전지 모듈.
- 제4항에 있어서,상기 슬롯의 적어도 일부 구간의 직경은 상기 거치홀의 개구 직경보다 큰 전지 모듈.
- 제1항에 있어서,상기 엔드 플레이트에는 제1 체결홀이 형성되고,상기 제1 체결홀에 체결 부재가 삽입됨으로써 상기 하우징 및 상기 엔드 플레이트가 결합되는 전지 모듈.
- 제8항에 있어서,상기 하우징에는 상기 제1 체결홀과 대응되는 제2 체결홀이 형성되고,상기 제2 체결홀은 상기 하우징의 결합면에 위치하며,상기 결합면은 상기 전지셀 적층체의 길이 방향과 수직하는 면인 전지 모듈.
- 제8항에 있어서,상기 제1 체결홀은 2개 이상인 전지 모듈.
- 제1항에 있어서,상기 하우징과 상기 엔드 플레이트 사이에는 실링 부재가 위치하는 전지 모듈.
- 제11항에 있어서,상기 실링 부재는 양 말단이 이어진 폐곡선 형태인 전지 모듈.
- 제1항에 따른 적어도 하나의 전지 모듈을 포함하는 전지 팩.
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JP2023507305A JP2023536183A (ja) | 2021-05-11 | 2022-02-09 | 電池モジュールおよびこれを含む電池パック |
EP22807583.4A EP4170797A1 (en) | 2021-05-11 | 2022-02-09 | Battery module and battery pack including same |
US18/020,008 US20240039113A1 (en) | 2021-05-11 | 2022-02-09 | Battery module and battery pack including the same |
CN202280005655.0A CN115885421A (zh) | 2021-05-11 | 2022-02-09 | 电池模块及包括该电池模块的电池组 |
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Citations (5)
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KR20170073468A (ko) * | 2015-12-18 | 2017-06-28 | 주식회사 엘지화학 | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
KR20200068593A (ko) * | 2018-12-05 | 2020-06-15 | 주식회사 엘지화학 | 양방향 체결 구조를 갖는 커넥터를 포함하는 전지 모듈 |
KR20200102273A (ko) * | 2019-02-21 | 2020-08-31 | 주식회사 엘지화학 | 연성 인쇄 회로 기판을 덮는 보호 커버를 포함하는 전지 모듈 |
KR20200104142A (ko) * | 2019-02-26 | 2020-09-03 | 주식회사 엘지화학 | 충격 흡수 구조를 갖는 커넥터를 포함하는 전지 모듈 |
KR20200104143A (ko) * | 2019-02-26 | 2020-09-03 | 주식회사 엘지화학 | 전지 모듈 |
-
2021
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2022
- 2022-02-09 WO PCT/KR2022/001967 patent/WO2022239933A1/ko active Application Filing
- 2022-02-09 EP EP22807583.4A patent/EP4170797A1/en active Pending
- 2022-02-09 JP JP2023507305A patent/JP2023536183A/ja active Pending
- 2022-02-09 US US18/020,008 patent/US20240039113A1/en active Pending
- 2022-02-09 CN CN202280005655.0A patent/CN115885421A/zh active Pending
Patent Citations (5)
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KR20170073468A (ko) * | 2015-12-18 | 2017-06-28 | 주식회사 엘지화학 | 배터리 모듈, 이러한 배터리 모듈을 포함하는 배터리 팩 및 이러한 배터리 팩을 포함하는 자동차 |
KR20200068593A (ko) * | 2018-12-05 | 2020-06-15 | 주식회사 엘지화학 | 양방향 체결 구조를 갖는 커넥터를 포함하는 전지 모듈 |
KR20200102273A (ko) * | 2019-02-21 | 2020-08-31 | 주식회사 엘지화학 | 연성 인쇄 회로 기판을 덮는 보호 커버를 포함하는 전지 모듈 |
KR20200104142A (ko) * | 2019-02-26 | 2020-09-03 | 주식회사 엘지화학 | 충격 흡수 구조를 갖는 커넥터를 포함하는 전지 모듈 |
KR20200104143A (ko) * | 2019-02-26 | 2020-09-03 | 주식회사 엘지화학 | 전지 모듈 |
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CN115885421A (zh) | 2023-03-31 |
EP4170797A1 (en) | 2023-04-26 |
JP2023536183A (ja) | 2023-08-23 |
KR20220153355A (ko) | 2022-11-18 |
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