WO2023027522A1 - 연결 와이어 및 이를 포함하는 전지팩 - Google Patents
연결 와이어 및 이를 포함하는 전지팩 Download PDFInfo
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- WO2023027522A1 WO2023027522A1 PCT/KR2022/012719 KR2022012719W WO2023027522A1 WO 2023027522 A1 WO2023027522 A1 WO 2023027522A1 KR 2022012719 W KR2022012719 W KR 2022012719W WO 2023027522 A1 WO2023027522 A1 WO 2023027522A1
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- Prior art keywords
- insulating member
- paragraph
- wound
- conductive
- insulating
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Links
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Images
Classifications
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- 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
- H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
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- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
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- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to a connection wire and a battery pack including the same, and more particularly, to a connection wire for high voltage (HV) connection and a battery pack including the same.
- HV high voltage
- secondary batteries capable of charging and discharging are a solution to air pollution, such as existing gasoline vehicles using fossil fuels, electric vehicles (EVs), hybrid electric vehicles (HEVs), plug-in hybrid electric vehicles ( P-HEV), etc., the need for development of secondary batteries is increasing.
- a lithium secondary battery mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively.
- a lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with such a positive electrode active material and a negative electrode active material are disposed with a separator therebetween, and a battery case in which the electrode assembly is sealed and housed together with an electrolyte solution.
- lithium secondary batteries can be classified into a can-type secondary battery in which an electrode assembly is embedded in a metal can and a pouch-type secondary battery in which an electrode assembly is embedded in a pouch of an aluminum laminate sheet, depending on the shape of an exterior material.
- a battery module electrically connecting multiple battery cells this is used In this battery module, capacity and output are improved by forming a battery cell stack in which a plurality of battery cells are connected in series or parallel to each other.
- one or more battery modules may be mounted together with various control and protection systems such as a battery disconnect unit (BDU), a battery management system (BMS), and a cooling system to form a battery pack.
- BDU battery disconnect unit
- BMS battery management system
- a cooling system to form a battery pack.
- the HV connection is a connection serving as a power source for supplying power, and means a connection between battery cells or between battery modules.
- An object to be solved by the present invention is to provide a connection wire having increased flexibility and a battery pack including the same so that it can be applied to a limited space inside the battery pack.
- a connection wire includes a plurality of conductive members; and an insulating member surrounding the conductive members, wherein the insulating member has a rolled shape and is positioned on an inner surface of the insulating member around which the conductive members are wound.
- the conductive member may include an exposed terminal portion extending longer than the insulating member in one direction.
- the connecting wire may have a form in which the insulating member is wound in a state in which the conductive members are sequentially disposed in a direction from one end at a center side of the insulating member to one end at an outer side of the insulating member.
- the distance between the conductive member closest to the outer end of the insulating member and the outer end of the insulating member is between the conductive member closest to the center end of the insulating member and the center end of the insulating member. may be wider than the spacing of
- the insulating member may be wound one or more times to form an outer insulating portion.
- the conductive member may be a flexible flat cable.
- the conductive member may include a conductor and an insulating film surrounding the conductor.
- the conductive member may be an electric conductor.
- the connection wire may further include a shielding circuit unit.
- the shielding circuit part may be positioned on an inner surface of the insulating member, and the shielding circuit part may be positioned farther from the center of the winding than the conductive members based on the rolled shape of the insulating member.
- connection wire may have a shape in which the insulating member is wound in a state in which the circuit part for shielding is spaced apart from the conductive member in a direction from a central end of the insulating member to an outer end of the insulating member.
- the shielding circuit part may include a metal layer.
- connection wire may further include a short circuit prevention sheet.
- the short circuit prevention sheet may be positioned on an inner surface of the rolled insulation member, and based on the rolled shape of the insulation member, the short circuit prevention sheet may be positioned farther from the winding center than the conductive members.
- the short circuit prevention sheet may include a ceramic sheet.
- the short circuit prevention sheet may include a mica (MICA) sheet.
- MICA mica
- a battery pack according to an embodiment of the present invention includes the connection wire; battery modules; and a BDU module, wherein the connection wire electrically connects between the battery modules or between the battery module and the BDU module.
- connection wire may be increased by providing a connection wire in a form in which a plurality of conductive members are wound around an insulating member.
- FIG. 1 is a plan view illustrating a battery pack according to an embodiment of the present invention.
- FIG. 2 is a perspective view illustrating a battery module included in the battery pack of FIG. 1 .
- FIG. 3 is a partial perspective view showing a state in which the module frame and the end plate are removed for the battery module of FIG. 2 .
- Figure 4 is a schematic diagram for explaining a process of manufacturing a connection wire according to an embodiment of the present invention.
- connection wire 5 is a perspective view showing a connection wire according to an embodiment of the present invention.
- FIG. 6 is a plan view of the connecting wire of FIG. 5 viewed along direction A;
- FIG. 7 is a partial perspective view illustrating a conductive member according to an exemplary embodiment of the present invention.
- FIG. 8 is a partial perspective view illustrating a conductive member according to another exemplary embodiment of the present invention.
- FIG. 9 is a partial perspective view showing a flexible bus bar according to a comparative example of the present invention.
- FIG. 10 is a schematic diagram for explaining a process of forming a bent portion in a connecting wire according to an embodiment of the present invention.
- Figure 11 is a schematic diagram for explaining a process of manufacturing a connection wire according to another embodiment of the present invention.
- FIG. 12 is a perspective view showing a connecting wire according to another embodiment of the present invention.
- FIG. 13 is a plan view of the connection wire of FIG. 12 viewed along direction B;
- Figure 14 is a schematic diagram for explaining a process of manufacturing a connection wire according to another embodiment of the present invention.
- connection wire 15 is a perspective view showing a connection wire according to another embodiment of the present invention.
- FIG. 16 is a plan view of the connecting wire of FIG. 15 viewed along a direction C;
- a part such as a layer, film, region, plate, etc.
- a part when a part is said to be “directly on” another part, it means that there is no other part in between.
- a reference part means to be located above or below the reference part, and to necessarily be located “on” or “on” in the opposite direction of gravity does not mean no.
- planar image it means when the target part is viewed from above, and when it is referred to as “cross-sectional image”, it means when a cross section of the target part cut vertically is viewed from the side.
- FIG. 1 is a plan view illustrating a battery pack according to an embodiment of the present invention.
- a battery pack 1000 includes a connection wire 100 , battery modules 1200 , and a battery disconnect unit (BDU) module 1300 .
- the connection wire 100 according to this embodiment electrically connects between the battery modules 1200 or between the battery modules 1200 and the BDU module 1300 .
- a plurality of battery modules 1200 may be accommodated in the pack frame 1100, and the electrical connection between the battery modules 1200 or the electrical connection between the battery module 1200 and the BDU module 1300 is a connection wire (100).
- the connection wire 100 according to the present embodiment may be responsible for high voltage (HV) connection.
- the HV connection is a connection serving as a power source for supplying power, and means a connection between battery cells or between battery modules.
- the BDU module 1300 is a member for controlling the electrical connection of the battery module 1200, and may cut off power between the power converter and the battery module 1200.
- the BDU module 1300 may secure the safety of the battery pack 1000 by cutting off the power of the battery pack 1000 when a condition in which the current exceeds a set range occurs.
- the battery pack 1000 connects the BMS (Battery Management System) module 1400 for monitoring and controlling the operation of the battery module 1200 and the battery module 1200 and the BMS module 1400.
- the connecting member 100 ′ may be responsible for low voltage (LV) connection.
- the LV connection means a sensing connection for sensing and controlling the voltage and temperature of the battery module 1200 .
- a sensor or the like inside the battery module 1200 is disposed, and real-time temperature information or voltage information of the battery module 1200 is transferred to the BMS module 1400 through the connecting member 100'.
- a real-time operating state of the battery module 1200 may be monitored and controlled through the BMS module 1400 .
- the battery module 1200 according to the present embodiment will be described with reference to FIGS. 2 and 3 .
- the battery module 1200 described below is an exemplary structure of a battery module including a plurality of battery cells 11, and various types of battery modules including a plurality of battery cells may be applied.
- FIG. 2 is a perspective view illustrating a battery module included in the battery pack of FIG. 1 .
- 3 is a partial perspective view showing a state in which the module frame and the end plate are removed for the battery module of FIG. 2 .
- the battery module 1200 may include a battery cell stack 11A in which a plurality of battery cells 11 are stacked.
- the battery cell stack 11A is shown in FIG. 3 .
- the battery cell stack 11A may be accommodated in the module frame 30 and the end plate 40 .
- the battery cell 11 may be a pouch type battery cell.
- a pouch-type battery cell may be formed by accommodating an electrode assembly in a pouch case of a laminate sheet including a resin layer and a metal layer, and then fusing the outer periphery of the pouch case.
- These battery cells 11 may be formed in a rectangular sheet structure.
- the electrode leads 11L connected to the electrode assembly protrude out of the pouch case, and the electrode leads 11L of each battery cell 11 may be electrically connected to each other via a bus bar 21. Meanwhile, at least one electrode lead 11L may be connected to the terminal bus bar 22 .
- a partial area of the terminal bus bar 22 may be exposed to the outside of the battery module 1200 as shown in FIG. 2 .
- connection wire 100 is electrically connected to the terminal bus bar 22, so that the above-described HV connection can be made. That is, the battery module 1200 may be electrically connected to another battery module 1200 or the BDU module 1300 via the connection wire 100 connected to the terminal bus bar 22 .
- connection wire according to an embodiment of the present invention will be described in detail with reference to FIGS. 4 to 6 .
- Figure 4 is a schematic diagram for explaining a process of manufacturing a connection wire according to an embodiment of the present invention.
- 5 is a perspective view showing a connection wire according to an embodiment of the present invention.
- 6 is a plan view of the connecting wire of FIG. 5 viewed along direction A;
- the connection wire 100a includes a plurality of conductive members 200 and an insulating member 300 surrounding the conductive members 200 .
- the insulating member 300 has a rolled shape, and is positioned on the inner surface 300N of the insulating member 300 on which the conductive members 200 are wound.
- the insulating member 300 may be wound (W) round.
- W the inner surface 300N of the insulating member 300 referred to herein is the one surface of the insulating member 300 on which the conductive members 200 are placed, that is, the direction in which the insulating member 300 is wound (W). may correspond to one side of
- the connecting wire 100a is a conductive member ( In a state in which the 200 are sequentially arranged, the insulating member 300 may be wound around the conductive members 200 .
- the center side end 300Ea of the insulating member 300 is a first wound portion of the insulating member 300, and is located at the winding center (WC, see FIG. 6) of the wound insulating member 300.
- the outer end 300Eb of the insulating member 300 is a portion that is wound most recently in the insulating member 300 and is positioned at the outermost part of the wound insulating member 300 .
- the conductive member 200 may include an exposed terminal portion 200T extending longer than the insulating member 300 in one direction. That is, in the direction in which the connecting wire 100a extends, the conductive member 200 is formed longer than the insulating member 300, and both ends of the conductive member 200 are exposed to the outside of the insulating member 300, A terminal unit 200T may be provided. There is no particular limitation on the method of forming the terminal portion 200T. For example, the terminal portion 200T may be naturally formed by forming the conductive member 200 longer than the insulating member 300 . Alternatively, after the conductive members 200 are wrapped with the insulating member 300, portions of both ends of the insulating member 300 may be removed to expose the terminal portion 200T.
- terminal portions 200T of the conductive members may be joined to each other by welding or riveting.
- terminal units 200T are connected to the terminal bus bar 22 of the battery module 1200 described above, and HV connection can be made. This will be described again with reference to each embodiment of FIGS. 7 and 8 .
- FIGS. 4 and 5 only both ends of the connecting wire 100a are enlarged and illustrated for convenience of description, but the connecting wire 100a has a wire shape that is long.
- the insulating member 300 may include an electrically insulating material.
- the insulating member 300 may include one or more materials selected from the group consisting of polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC).
- the insulating member 300 may include a predetermined insulating adhesive layer.
- the insulating adhesive layer may include one or more resins selected from the group consisting of epoxy resins, acrylic resins, melamine resins, polyamide resins, and polyimide resins.
- the outer end 300Eb of the insulating member 300 may be attached and fixed by a method such as an adhesive or taping so that the rolled insulating member 300 does not unwind. Alternatively, it may be fixed by applying a band tie to the outside of the insulating member 300 . Alternatively, an additional insulating coating may be formed to prevent the insulating member 300 from loosening.
- a method such as an adhesive or taping so that the rolled insulating member 300 does not unwind.
- it may be fixed by applying a band tie to the outside of the insulating member 300 .
- an additional insulating coating may be formed to prevent the insulating member 300 from loosening.
- these are exemplary methods and there is no particular limitation on the method as long as the outer end 300Eb of the insulating member 300 can be fixed.
- the distance Gb between the conductive member 200b closest to the outer end 300Eb of the insulating member 300 and the outer end 300Eb of the insulating member 300 is It may be wider than the distance Ga between the conductive member 200a closest to the center side end 300Ea of 300 and the center side end 300Ea of the insulating member 300 . That is, in the connection wire 100a according to the present embodiment, the distance Gb between the conductive member 200b and the outer end 300Eb of the insulating member 300 may be intentionally increased.
- the outermost region of the connection wire 100a may be configured such that only the insulating member 300 is additionally wound without the conductive member 200 being interposed therebetween.
- the insulating member 300 may be wound one or more times to form the outer insulating portion 300U.
- the insulating member 300 may be wound one or more times to form the outer insulating portion 300U.
- FIG. 7 is a partial perspective view illustrating a conductive member according to an exemplary embodiment of the present invention.
- the conductive member 200 may be a flexible flat cable (FFC). That is, the conductive member 200 according to the present embodiment may be a cable obtained by wrapping one or a plurality of conductor circuit lines with an insulator on the same plane and sealing them.
- the conductive member 200 may include a conductor portion 210 and an insulating film 220 surrounding the conductor portion 210 .
- Conductor 210 may include an electrically conductive material.
- the conductor unit 210 may include one or more metal materials selected from the group consisting of gold, silver, copper, lead, and aluminum.
- the conductor unit 210 may be provided in plurality.
- the plurality of conductor parts 210 may be arranged spaced apart by a predetermined distance in the width direction d2 of the conductive member 200 .
- the width direction d2 of the conductive member 200 may be a direction orthogonal to a direction in which the conductive member 200 is connected.
- the insulating film 220 is an electrical insulating material, for example, one or more materials selected from the group consisting of polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC).
- PP polypropylene
- PE polyethylene
- PVC polyvinyl chloride
- the conductive member 200 is a flexible flat cable, and in a state where the conductor parts 210 are arranged in parallel at predetermined intervals, insulating films are placed above and below the conductor parts 210, respectively. After placing the 220, it may be manufactured by laminating the insulating film 220.
- connection wire 100a may be formed by disposing the conductive members 200, which are flexible flat cables, on one surface of the insulating member 300 and then winding the insulating member 300.
- a portion of the insulating film 220 may be removed from a region corresponding to the terminal portion 200T of the conductive member 200 to expose a portion of the conductor portion 210 .
- An exposed portion of the conductor unit 210 may be connected to the terminal bus bar described above.
- FIG. 8 is a partial perspective view illustrating a conductive member according to another exemplary embodiment of the present invention.
- the conductive member 200' may be an electrical conductor. That is, the conductive member 200 ′ according to the present embodiment may include a metal material having electrical conductivity.
- the conductive member 200 ′ may be an electrical conductor including one or more metal materials selected from the group consisting of gold, silver, copper, lead, and aluminum.
- the connection wire 100a according to another embodiment of the present invention may be formed by disposing a conductive member 200', which is an electrical conductor, on one surface of the insulating member 300 and then winding the insulating member 300. .
- connection wire 100a will be described through comparison with the flexible bus bar according to the comparative example of the present invention.
- FIG. 9 is a partial perspective view showing a flexible bus bar according to a comparative example of the present invention.
- a flexible bus bar 10 conventionally used for HV connection may include conductor parts 10C and an insulating tube part 10T surrounding the conductor parts 10C.
- the insulation tube part 10T is configured to surround them. Even if a material with flexibility is applied, there are bound to be restrictions on implementing a bent part.
- the conventional flexible bus bar 10 has limitations in adapting to the available space inside the battery pack.
- Figure 10 is a schematic diagram for explaining a process of forming a bent portion in the connection wire according to an embodiment of the present invention.
- connection wire 100a in the connection wire 100a according to the present embodiment, the insulating member 300 is wound with the conductive members 200 on the inner surface 300N. Because of the formed shape, a gap is created between the conductive members 200 or inside the insulating member 300.
- a portion of the connecting wire 100a may be locally compressed using the air gap inside the connecting wire 100a.
- the bent portion BP may be formed in the connection wire 100a by bending the compressed portion of the connection wire 100a. That is, the shape of the cross section of the connecting wire 100a according to the present embodiment can be locally changed using the internal void, so that the radius of curvature of the bent portion BP can be reduced.
- the connection wire 100a can be strongly bent with a small radius of curvature, so it is more suitable for application to a narrow space inside a battery pack.
- the insulating member 300 may be wound so that the conductive members 200 do not overlap each other.
- each of the conductive members 200 comes into contact only with the wound insulating member 300 and may be positioned so as not to come into contact with other conductive members 200 . That is, a space can be secured between the conductive members 200, which can work as an advantage in terms of heat dissipation. Since the space between the conductive members 200 is advantageous for heat dissipation, it is possible to conduct electricity even when the cross-sectional area of the connecting wire 100a is formed somewhat small, which can be seen as an advantageous factor in weight reduction and cost reduction.
- connection wire according to another embodiment of the present invention will be described in detail with reference to FIGS. 11 to 13 .
- Figure 11 is a schematic diagram for explaining a process of manufacturing a connection wire according to another embodiment of the present invention.
- 12 is a perspective view showing a connecting wire according to another embodiment of the present invention.
- 13 is a plan view of the connection wire of FIG. 12 viewed along direction B;
- a connection wire 100b according to another embodiment of the present invention includes a plurality of conductive members 200 and an insulating member 300 surrounding the conductive members 200 .
- the insulating member 300 has a rolled shape, and is positioned on the inner surface 300N of the insulating member 300 on which the conductive members 200 are wound. This is the same as the connection wire 100a described above.
- connection wire 100b may further include a shielding circuit unit 400, and the shielding circuit unit 400 may be positioned on the inner surface 300N of the wound insulating member 300. .
- the insulating member 300 may be wound (W) round. .
- W connection wire 100b shown in FIGS. 12 and 13 .
- the conductive members 200 are disposed closer to the central one end 300Ea of the insulating member 300 than the shielding circuit units 400, and the shielding circuit units 400 are insulated from the conductive members 200. It can be disposed close to the outer end (300Eb) of the member (300). That is, in the direction d1 from the central one end 300Ea of the insulating member 300 to the outer end 300Eb of the insulating member 300, the conductive members 200 are first sequentially disposed, and then the shielding circuit unit 400 ) can be placed sequentially.
- the insulating member 300 is wound (W) in this state, as shown in FIGS.
- the shielding circuit unit 400 is formed by the conductive member 200. It may be located farther from the winding center (WC) than the That is, on the cross-section of the connection wire 100b, the shielding circuit units 400 may be positioned outside the conductive members 200.
- the shielding circuit unit 400 may include a metal layer.
- the shielding circuit unit 400 may be a layered member including one or more metal materials selected from the group consisting of gold, silver, copper, lead, and aluminum.
- the shielding circuit unit 400 is located outside the conductive member 200 and serves to prevent noise interference between the conductive member 200 functioning as a current circuit and the outside.
- the insulating member 300 may be wound with a predetermined gap between the shielding circuit units 400 and the outer end 300Eb of the insulating member 300 .
- the portion of the insulation member 300 at the interval may be configured as an outer insulation portion 300U at an outermost portion of the connection wire 100b.
- the shielding circuit unit 400 together with the conductive member 200 is disposed on one surface of the insulating member 300, and then wound together to form the connection wire 100b.
- a circuit unit 400 for shielding may be provided. That is, when the insulating member 300 is wound without a separate additional process, the shielding member can be easily prepared by simply adding the shielding circuit unit 400 .
- connection wire 100b is directed from the central end 300Ea of the insulating member 300 to the outer end 300Eb of the insulating member 300.
- the insulating member 300 in a state in which the shielding circuit unit 400 is spaced apart from the conductive member 200, the insulating member 300 may be wound. That is, when the insulating member 300 is wound, the shielding circuit unit 400 may be positioned to be spaced apart from the conductive member 200 by a predetermined interval.
- the portion of the insulating member 300 corresponding to the gap between the conductive member 200 and the shielding circuit unit 400 is an intermediate insulating unit 300M that electrically insulates the conductive members 200 and the shielding circuit unit 400.
- connection wire 100b adjusts the distance between the conductive member 200 on the insulating member 300 and the shielding circuit unit 400 before winding, and the conductive member 200 and the shielding circuit unit It has the advantage of being able to easily provide an insulating layer between (400).
- 11 to 13 show a form in which a plurality of circuit parts 400 for shielding are arranged at regular intervals, but a form in which a single plate-shaped circuit part for shielding 400 is wound together with an insulating member 300 is also possible.
- connection wire according to another embodiment of the present invention will be described in detail with reference to FIGS. 14 to 16 .
- Figure 14 is a schematic diagram for explaining a process of manufacturing a connection wire according to another embodiment of the present invention.
- 15 is a perspective view showing a connection wire according to another embodiment of the present invention.
- 16 is a plan view of the connecting wire of FIG. 15 viewed along a direction C;
- a connection wire 100c according to another embodiment of the present invention includes a plurality of conductive members 200 and an insulating member 300 surrounding the conductive members 200.
- the insulating member 300 has a rolled shape, and is positioned on the inner surface 300N of the insulating member 300 on which the conductive members 200 are wound. This is the same as the previously described connection wires (100a, 100b).
- connection wire 100c may further include a short circuit prevention sheet 500, and the short circuit prevention sheet 500 may be positioned on the inner surface 300N of the wound insulation member 300. there is.
- the insulating member 300 may be wound (W) round. Through this, it is possible to manufacture the connection wire 100c shown in FIGS. 15 and 16 .
- the conductive members 200 are disposed closer to the center side end 300Ea of the insulating member 300 than the short circuit prevention sheet 500, and the short circuit prevention sheet 500 is placed closer to the insulating member than the conductive members 200. It can be placed close to the outer end (300Eb) of (300). That is, in the direction d1 from the central end 300Ea of the insulating member 300 to the outer end 300Eb of the insulating member 300, the conductive members 200 are first sequentially disposed, and then the short circuit prevention sheet 500 ) can be placed.
- the insulating member 300 is wound (W) in this state, as shown in FIGS.
- the short circuit prevention sheet 500 is formed by the conductive member 200 It may be located farther from the winding center (WC) than the That is, on the cross-section of the connection wire 100c, the short circuit prevention sheet 500 may be positioned outside the conductive members 200.
- the short circuit prevention sheet 500 may include a ceramic sheet. More specifically, the short circuit prevention sheet 500 may include a mica (MICA) sheet. That is, the short circuit prevention sheet may include a silicate-containing inorganic sheet.
- MICA mica
- the battery pack according to the present embodiment When the battery pack according to the present embodiment is applied to a vehicle or the like, it is frequently exposed to direct sunlight and may be placed in high temperature conditions such as in summer or in a desert area.
- the thermal runaway phenomenon generated in one battery module easily propagates to neighboring battery modules, eventually causing ignition of the battery pack itself. could lead to an explosion.
- One example of a thermal runaway phenomenon is as follows. Physical, thermal, and electrical damage to the battery cell 11, including overcharging, may occur, and the internal pressure of the battery cell 11 may increase. When the fusion strength limit value of the pouch-type cell case of the battery cell 11 is exceeded, high-temperature heat generated from the battery cell 11 and venting gas may be ejected to the outside of the battery cell 11 .
- the short circuit prevention sheet 500 is placed on one surface of the insulating member 300 together with the conductive member 200, and then wound together to form the connection wire 100c.
- a layer for preventing short circuits may be provided. Even when the inside of the battery pack becomes a high-temperature environment due to a thermal runaway phenomenon or the like, the short-circuit prevention sheet 500 including the ceramic sheet may maintain its shape without melting. Accordingly, it is possible to prevent a short circuit from occurring when a conductor, such as the conductive member 200 therein, touches an external device. in other words. In a high-temperature environment, additional hazardous situations can be prevented from occurring.
- connection wire 100c according to the present embodiment has the advantage that a layer for preventing thermal diffusion can be easily prepared by simply adding the short circuit prevention sheet 500 when the insulating member 300 is wound without a separate additional process.
- a short circuit prevention sheet 500 such as a mica sheet
- connection wire 100c according to the present embodiment can easily add a short circuit prevention sheet 500, Excellent stability can be secured by preventing a short in the event of thermal runaway.
- the battery pack according to the present embodiment described above can be applied to various devices. Specifically, it can be applied to means of transportation such as electric bicycles, electric vehicles, hybrids, or energy storage systems (ESS), but is not limited thereto and can be applied to various devices that can use secondary batteries.
- means of transportation such as electric bicycles, electric vehicles, hybrids, or energy storage systems (ESS), but is not limited thereto and can be applied to various devices that can use secondary batteries.
- ESS energy storage systems
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
- Details Of Indoor Wiring (AREA)
Abstract
Description
Claims (15)
- 복수의 도전 부재들; 및상기 도전 부재들을 감싸는 절연 부재를 포함하고,상기 절연 부재는 권취된 형태이며, 상기 도전 부재들이 권취된 상기 절연 부재의 내측면에 위치하는 연결 와이어.
- 제1항에서,상기 도전 부재는, 상기 절연 부재보다 일 방향으로 길게 연장되어 노출된 단자부를 포함하는 연결 와이어.
- 제1항에서,상기 절연 부재의 중심측 일단에서 상기 절연 부재의 외측 일단으로의 방향으로 상기 도전 부재들이 차례로 배치된 상태에서, 상기 절연 부재가 권취된 형태인 연결 와이어.
- 제3항에서,상기 절연 부재의 상기 외측 일단에 가장 가까운 상기 도전 부재와 상기 절연 부재의 상기 외측 일단 사이의 간격이,상기 절연 부재의 상기 중심측 일단에 가장 가까운 상기 도전 부재와 상기 절연 부재의 상기 중심측 일단 사이의 간격보다 넓은 연결 와이어.
- 제1항에서,가장 바깥쪽 영역에서, 상기 절연 부재가 1회 이상 권취되어 외곽 절연부를 형성하는 연결 와이어.
- 제1항에서,상기 도전 부재는, 플렉시블 플랫 케이블인 연결 와이어.
- 제6항에서,상기 도전 부재는, 도체부 및 상기 도체부를 감싸는 절연 필름을 포함하는 연결 와이어.
- 제1항에서,상기 도전 부재는, 전기 전도체인 연결 와이어.
- 제1항에서,차폐용 회로부를 더 포함하고,상기 차폐용 회로부는 권취된 상기 절연 부재의 내측면에 위치하며,상기 절연 부재의 권취된 형태를 기준으로, 상기 차폐용 회로부가 상기 도전 부재들보다 권취 중심으로부터 멀리 위치하는 연결 와이어.
- 제9항에서,상기 절연 부재의 중심측 일단에서 상기 절연 부재의 외측 일단으로의 방향으로 상기 차폐용 회로부가 상기 도전 부재로부터 이격된 상태에서, 상기 절연 부재가 권취된 형태인 연결 와이어.
- 제9항에서,상기 차폐용 회로부는 금속층을 포함하는 연결 와이어.
- 제1항에서,단락 방지 시트를 더 포함하고,상기 단락 방지 시트는, 권취된 상기 절연 부재의 내측면에 위치하며,상기 절연 부재의 권취된 형태를 기준으로, 상기 단락 방지 시트는 상기 도전 부재들보다 권취 중심으로부터 멀리 위치하는 연결 와이어.
- 제12항에서,상기 단락 방지 시트는, 세라믹 시트를 포함하는 연결 와이어.
- 제12항에서,상기 단락 방지 시트는, 마이카(MICA) 시트를 포함하는 연결 와이어.
- 제1항에 따른 연결 와이어;전지 모듈들; 및BDU 모듈을 포함하고,상기 연결 와이어는, 상기 전지 모듈들 사이 또는 상기 전지 모듈과 상기 BDU 모듈 사이를 전기적으로 연결하는 전지팩.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US18/575,999 US20240313331A1 (en) | 2021-08-25 | 2022-08-25 | Connection Wire and Battery Pack Including the Same |
JP2023574486A JP2024529224A (ja) | 2021-08-25 | 2022-08-25 | 連結ワイヤおよびこれを含む電池パック |
EP22861730.4A EP4336521A4 (en) | 2021-08-25 | 2022-08-25 | CONNECTING WIRE AND BATTERY PACK COMPRISING IT |
CN202280045384.1A CN117597746A (zh) | 2021-08-25 | 2022-08-25 | 连接线和包括所述连接线的电池组 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2021-0112603 | 2021-08-25 | ||
KR1020210112603A KR20230030414A (ko) | 2021-08-25 | 2021-08-25 | 연결 와이어 및 이를 포함하는 전지팩 |
Publications (1)
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WO2023027522A1 true WO2023027522A1 (ko) | 2023-03-02 |
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PCT/KR2022/012719 WO2023027522A1 (ko) | 2021-08-25 | 2022-08-25 | 연결 와이어 및 이를 포함하는 전지팩 |
Country Status (6)
Country | Link |
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US (1) | US20240313331A1 (ko) |
EP (1) | EP4336521A4 (ko) |
JP (1) | JP2024529224A (ko) |
KR (1) | KR20230030414A (ko) |
CN (1) | CN117597746A (ko) |
WO (1) | WO2023027522A1 (ko) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH05274924A (ja) * | 1992-03-25 | 1993-10-22 | Hitachi Cable Ltd | 地中送電用ケーブル |
JPH08203336A (ja) * | 1995-01-30 | 1996-08-09 | Yazaki Corp | シート電線の放熱構造および集束方法 |
JPH0997520A (ja) * | 1995-09-29 | 1997-04-08 | Fujitsu Takamizawa Component Kk | 多芯ケーブル及びその製造方法 |
JP2002280790A (ja) * | 2001-03-16 | 2002-09-27 | Yazaki Corp | 導体薄膜シート及びシールドハーネス |
KR20210017172A (ko) * | 2019-08-07 | 2021-02-17 | 주식회사 엘지화학 | 자동차용 언더 바디 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB824615A (en) * | 1957-03-26 | 1959-12-02 | Standard Telephones Cables Ltd | Electrical cables and the manufacture thereof |
EP1551037A1 (de) * | 2004-01-05 | 2005-07-06 | Alcan Technology & Management Ltd. | Flexibler Träger mit elektrisch leitfähiger Struktur |
JP4883051B2 (ja) * | 2008-06-19 | 2012-02-22 | トヨタ自動車株式会社 | ワイヤーハーネス |
EP2518736A1 (en) * | 2011-04-29 | 2012-10-31 | Tyco Electronics Nederland B.V. | Cable assembly comprising a flexible support made from a textile material |
-
2021
- 2021-08-25 KR KR1020210112603A patent/KR20230030414A/ko active Search and Examination
-
2022
- 2022-08-25 JP JP2023574486A patent/JP2024529224A/ja active Pending
- 2022-08-25 US US18/575,999 patent/US20240313331A1/en active Pending
- 2022-08-25 EP EP22861730.4A patent/EP4336521A4/en active Pending
- 2022-08-25 CN CN202280045384.1A patent/CN117597746A/zh active Pending
- 2022-08-25 WO PCT/KR2022/012719 patent/WO2023027522A1/ko active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05274924A (ja) * | 1992-03-25 | 1993-10-22 | Hitachi Cable Ltd | 地中送電用ケーブル |
JPH08203336A (ja) * | 1995-01-30 | 1996-08-09 | Yazaki Corp | シート電線の放熱構造および集束方法 |
JPH0997520A (ja) * | 1995-09-29 | 1997-04-08 | Fujitsu Takamizawa Component Kk | 多芯ケーブル及びその製造方法 |
JP2002280790A (ja) * | 2001-03-16 | 2002-09-27 | Yazaki Corp | 導体薄膜シート及びシールドハーネス |
KR20210017172A (ko) * | 2019-08-07 | 2021-02-17 | 주식회사 엘지화학 | 자동차용 언더 바디 |
Non-Patent Citations (1)
Title |
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See also references of EP4336521A4 * |
Also Published As
Publication number | Publication date |
---|---|
JP2024529224A (ja) | 2024-08-06 |
KR20230030414A (ko) | 2023-03-06 |
EP4336521A4 (en) | 2024-10-09 |
EP4336521A1 (en) | 2024-03-13 |
CN117597746A (zh) | 2024-02-23 |
US20240313331A1 (en) | 2024-09-19 |
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