WO2020004741A1 - 홀더를 구비한 이차전지 팩 - Google Patents
홀더를 구비한 이차전지 팩 Download PDFInfo
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- WO2020004741A1 WO2020004741A1 PCT/KR2018/015798 KR2018015798W WO2020004741A1 WO 2020004741 A1 WO2020004741 A1 WO 2020004741A1 KR 2018015798 W KR2018015798 W KR 2018015798W WO 2020004741 A1 WO2020004741 A1 WO 2020004741A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery pack
- secondary battery
- circuit board
- printed circuit
- battery cell
- Prior art date
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- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
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- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
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- H—ELECTRICITY
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
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- H01M50/119—Metals
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/124—Primary casings; Jackets or wrappings characterised by the material having a layered structure
- H01M50/126—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers
- H01M50/129—Primary casings; Jackets or wrappings characterised by the material having a layered structure comprising three or more layers with two or more layers of only organic material
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- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/183—Sealing members
- H01M50/184—Sealing members characterised by their shape or structure
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- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
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- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
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- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- 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
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- H—ELECTRICITY
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- 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
- H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
-
- 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 secondary battery pack having a holder, and more particularly, to a secondary battery pack that effectively improves manufacturing efficiency and product durability.
- водородн ⁇ е ⁇ е ⁇ ество Commercially available secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, and thus are free of charge and discharge. The self-discharge rate is very low and the energy density is high.
- Such lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively.
- the lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with the positive electrode active material and the negative electrode active material are disposed with a separator interposed therebetween, and a packaging material for sealingly storing the electrode assembly together with the electrolyte solution.
- a lithium secondary battery may 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.
- the can-type secondary battery may be further classified into a cylindrical battery and a square battery according to the shape of the metal can.
- the pouch of the pouch-type secondary battery is largely divided into a lower sheet and an upper sheet covering the same, and the pouch houses an electrode assembly formed by stacking a positive electrode, a negative electrode, and a separator. Then, the electrode assembly is accommodated and the edges of the upper sheet and the lower sheet are sealed by heat fusion or the like.
- an electrode tab drawn from each electrode may be coupled to an electrode lead, and an insulation film may be added to the electrode lead in contact with a sealing part.
- the pouch type secondary battery may have flexibility that can be configured in various forms, and has the advantage of realizing a secondary battery having the same capacity with a smaller volume and mass.
- the pouch type secondary battery uses a soft pouch as a container, so the mechanical strength is weak, there is a possibility of water penetration, and the internal short, the overcharge state exceeding the allowable current and voltage, exposure to high temperatures, dropping There is a safety problem that causes the battery to explode by the high temperature and high pressure inside the battery, which may be caused by an abnormal operating state of the battery, such as an impact caused by.
- the pouch-type secondary battery has various combustible materials embedded therein, there is a risk of overheating, explosion, etc. due to overcharging, overcurrent, and other physical external shocks. Therefore, the secondary battery pack is equipped with a protection circuit module (PCM) capable of effectively controlling abnormal conditions such as overcharge and the like electrically connected to the battery cells.
- PCM protection circuit module
- the protection circuit module was provided with a PCM case configured to surround the PCB substrate to protect the provided PCB substrate.
- the secondary battery pack of the prior art often flows the PCB substrate or the secondary battery embedded in the PCM case due to the external shock during use, a large cause that shorten the life of the secondary battery pack due to damage of internal components. It became.
- an object of the present invention is to provide a secondary battery pack that effectively improves manufacturing efficiency and product durability.
- a battery cell including an electrode assembly, an accommodating part accommodating the electrode assembly and an electrolyte solution, a pouch case having a sealing part formed by sealing an outer periphery of the accommodating part, and an electrode lead protruding from the sealing part;
- a protective circuit module having a printed circuit board having a protective circuit formed thereon, wherein the printed circuit board is seated on a terrace structure in which the electrode lead is formed among the sealing parts;
- a holder having a main body portion having a plate shape to mount the battery cell on one surface thereof, and a partition wall protruding upward from the main body portion so as to surround at least a portion of a horizontal side of the battery cell;
- Insulation molding made of an electrically insulating material, and provided with a protective portion bonded to cover at least a portion of the printed circuit board, and a fixing portion protruding from the protective portion in the direction in which the partition wall is located and fixed to a portion of the partition wall It may include a member.
- the fixing part of the insulating molding member may have a hook structure in which an end portion protruding from the protective part in a direction in which the partition wall is positioned is bent downward through the partition wall.
- an insertion hole penetrated in the horizontal direction is formed in the partition wall of the holder, and a portion of the fixing portion of the insulating molding member may be inserted into and fixed to the insertion hole.
- the partition wall may extend along an outer circumference of the main body and have a curved portion bent in an arc shape on a plane.
- the holder may be formed with a molding blocking wall spaced apart from the partition wall in a predetermined distance and protruded upward.
- the insulating molding member may cover the printed circuit board as a whole so that the printed circuit board is not exposed to the outside.
- the lower surface of the insulating molding member may be configured to be coplanar with the lower surface of the accommodating part of the battery cell.
- an indentation recess embedded in the horizontal inner direction may be formed on an outer surface of the protective part of the insulating molding member.
- the recessed groove may be configured to accommodate a portion of the electrode lead.
- the main body portion of the holder may be formed with a heat radiating portion opened in the vertical direction to discharge the heat generated by the battery cell.
- the power supply apparatus for achieving the above object includes the secondary battery pack.
- the electronic device which concerns on this invention for achieving the said objective contains the said power supply apparatus.
- the secondary battery pack includes an insulating molding member, thereby stably protecting elements and components mounted on a printed circuit board of the protection circuit module. Accordingly, the present invention can effectively prevent the elements and components of the printed circuit board from being damaged or released due to external impact.
- the insulating molding member includes a protective part configured to cover at least a portion of the printed circuit board, thereby effectively preventing the printed circuit board from being short-circuited with the metal thin film provided in the pouch case.
- the insulating molding member includes a fixing portion protrudingly extending from the protection portion in the direction in which the partition wall is located and fixed on a portion of the partition wall, thereby allowing horizontal flow of the battery cells mounted in the holder. It can effectively prevent, and effectively prevent the collision between the partition wall and the battery cell or the protection circuit module due to the frequent flow, it can minimize the damage caused during the use of the product.
- the fixing part of the hook structure of the insulating molding member can prevent the battery cell from moving in the front-back direction, the structure of the battery cell or the connection structure between the printed circuit board connected to the electrode lead is prevented. Damage can be prevented.
- the present invention by forming a portion of the fixing portion of the insulating molding member to be fixed to the insertion hole formed in the partition wall, compared to the fixing portion of the hook structure of the insulating molding member, The bonding force with a partition can be exhibited, and the durability of a secondary battery pack can be improved more.
- the present invention can further prevent the hot melt resin injected to form the insulating molding member from flowing out of the holder by further forming a molding barrier wall in the holder. .
- the molding barrier can serve as a guide so that the fixing part of the insulating molding member can be stably extended downwardly along the partition wall, thereby significantly reducing the defective rate of the product.
- FIG. 1 is a perspective view schematically showing the components of a secondary battery pack according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view schematically illustrating the components of the rechargeable battery pack of FIG. 1.
- FIG. 3 is a partial perspective view schematically illustrating some components of a rechargeable battery pack according to an exemplary embodiment of the present invention.
- FIG. 4 is an exploded bottom view schematically illustrating some components of a rechargeable battery pack according to an exemplary embodiment of the present invention.
- FIG. 5 is a perspective view schematically showing a holder of a rechargeable battery pack according to an embodiment of the present invention.
- FIG. 6 is a schematic partial cross-sectional view of a rechargeable battery pack cut along line C-C of FIG. 3.
- FIG. 7 is a partial perspective view schematically illustrating a part of a rechargeable battery pack according to another exemplary embodiment of the present invention.
- FIG. 8 is a schematic partial cross-sectional view of the pouch type secondary battery pack cut along the line D-D of FIG. 7.
- FIG. 9 is a partial cross-sectional view schematically showing a portion of a pouch type secondary battery pack according to another embodiment of the present invention.
- FIG. 1 is a perspective view schematically showing the components of a secondary battery pack according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view schematically illustrating the components of the rechargeable battery pack of FIG. 1.
- 3 is a partial perspective view schematically illustrating some components of a rechargeable battery pack according to an exemplary embodiment of the present invention.
- 4 is an exploded bottom view schematically illustrating some components of a rechargeable battery pack according to an exemplary embodiment of the present invention.
- FIG. 4 schematically shows a state where the battery cell 110 and the protection circuit module 120 are viewed from the bottom in a state in which they are separated from each other.
- the secondary battery pack 100 includes a battery cell 110 and a protection circuit module 120.
- the battery cell 110 may be a pouch-type battery cell 110.
- the pouch-type battery cell 110 may include an electrode assembly (not shown), an electrolyte (not shown), and a pouch packaging material 115.
- the electrode assembly may be sealed together with the electrolyte inside the pouch sheath 115, and an electrode lead 111 may be formed at one side thereof.
- the electrode assembly may be configured such that at least one positive electrode plate and at least one negative electrode plate are disposed with the separator interposed therebetween. More specifically, the electrode assembly may be a winding type in which one positive electrode plate and one negative electrode plate are wound together with a separator, or a stack type in which a plurality of positive electrode plates and a plurality of negative electrode plates are alternately stacked with a separator interposed therebetween.
- the pouch packaging material 115 may be configured to include an outer insulating layer, a metal layer, and an inner adhesive layer.
- the pouch sheath 115 is formed in a form containing a metal thin film, such as an aluminum thin film, to protect internal components such as the electrode assembly and the electrolyte, and to improve the electrochemical properties and the heat dissipation of the electrode assembly and the electrolyte. Can be configured.
- an aluminum thin film may be interposed between insulating layers formed of an insulating material in order to secure electrical insulation between components inside the battery cell 110 such as an electrode assembly and an electrolyte or other components outside the battery cell 110. May be interposed.
- the pouch packaging material 115 may be composed of two pouches, and at least one of the pouch exterior member 115 may have a concave inner space.
- the pouch packaging material 115 may include an accommodating part 116 containing the electrode assembly and the electrolyte.
- the pouch exterior member 115 is fused to each other so that the outer periphery of the two pouches are sealed to each other so that the inner space of the accommodating part 116 containing the electrode assembly is sealed, thereby sealing the outer periphery of the accommodating part 116. 117 can be formed.
- the pouch exterior member 115 may have a sealing part 117 folded downward in left and right sides of the accommodation part 116.
- a terrace structure 117S may be formed in the battery cell 110 in which an electrode lead 111 is positioned and an outer circumference of the pouch exterior material 115 is sealed.
- the terrace structure 117S unlike the folded sealing portion 117 formed on the left and right sides, is not folded in the vertical direction and may have a form extending in the horizontal direction.
- the pouch-type battery cell 110 may include an electrode lead 111 formed to protrude forward from the sealing portion 117 when viewed from the F direction.
- the electrode lead 111 may include an anode lead 111A and a cathode lead 111B.
- each of the two electrode leads 111A and 111B is configured in the form of a plate, and two wide surfaces are located at the upper and lower portions, respectively.
- the positive electrode lead 111A may be formed to protrude to one side of one side of the terrace structure 117S of the battery cell 110.
- the negative electrode lead 111B may be configured to be spaced apart from the positive electrode lead 111A in a horizontal direction to protrude to the other side of one side of the terrace structure 117S.
- the protection circuit module 120 may include a printed circuit board 121 having a protection circuit.
- the printed circuit board 121 may have an upper and lower surface relatively wider than a side surface.
- the printed circuit board 121 may be seated on the terrace structure 117S on which the electrode lead 111 is formed among the portions where the sealing part 117 is formed.
- the printed circuit board 121 may be positioned such that the upper and lower surfaces relatively wider than the side faces the upper surface of the terrace structure 117S.
- the protection circuit module 120 includes a lead formed on one surface 121a of the printed circuit board 121 such that the printed circuit board 121 is electrically connected to the electrode lead 111 of the battery cell 110.
- the connecting plate 123 may be provided.
- the lead connecting plate 123 may have a single flat plate shape.
- the lead connecting plate 123 may be mounted to have a plane parallel to one surface 121a of the printed circuit board 121.
- one surface of the lead connecting plate 123 may be bonded to a connection terminal (not shown) formed on the printed circuit board 121, and the other surface may be bonded to the electrode lead 111 of the battery cell 110. have.
- the protection circuit module 120 may include two lead connecting plates 123 coupled to two electrode leads 111A and 111B, and the lead connecting plate. 123 may be mounted to have a plane parallel to one surface 121a of the printed circuit board 121.
- a plurality of elements or components may be mounted on the printed circuit board 121.
- the devices and components used in the secondary battery pack 100 may be applied to the elements and components generally provided in the secondary battery pack.
- safety devices and chips may be mounted on the printed circuit board 121.
- the protection circuit module 120 may include another printed circuit board 126 connected to the printed circuit board 121.
- An external input / output terminal (not shown) may be formed on the printed circuit board 121.
- One end of the other printed circuit board 126 may be connected to an external input / output terminal of the printed circuit board 121.
- a connector 126c may be formed at one end of the other printed circuit board 126 so as to connect with another external device.
- the other printed circuit board 126 may be, for example, a flexible printed circuit board (FPCB) having a flexible substrate.
- FIG. 5 is a perspective view schematically showing a holder of a rechargeable battery pack according to an embodiment of the present invention.
- the secondary battery pack 100 of the present invention may include a holder 140 configured to mount the battery cell 110.
- the holder 140 may include a main body 142 and a partition 144.
- the main body 142 may have a plate shape to mount the battery cell 110 on one surface (upper surface).
- the plate shape means that the upper and lower surfaces in the vertical direction is formed relatively wider than the side in the horizontal direction.
- the main body 142 of the holder 140 is, for example, the first side 142a and the second side 142b respectively positioned at the front end, the rear end, the left end, and the right end when viewed in the F direction.
- the second side 142c may have a rectangular plate shape having a fourth side 142d.
- terms indicating directions such as before, after, left, right, up, and down may vary depending on the position of the observer or the shape of the object. However, in the present specification, for convenience of description, the front, rear, left, right, up, down, and the like directions are shown separately based on a time when viewed in the F direction.
- the main body 142 of the holder 140 may be formed with a heat radiating portion (O1) opened in the vertical direction to discharge the heat generated by the battery cell 110.
- the heat dissipation unit O1 may be formed at a position corresponding to the accommodating unit 116 in which heat generation of the battery cell 110 is concentrated.
- a portion of the accommodating part 116 may be exposed to the outside of the holder 140 through the heat dissipating part O1.
- the main body 142 of the holder 140 in which the accommodating part 116 of the mounted battery cell 110 is located is opened in the vertical direction.
- the heat radiating unit O1 may be formed.
- the heat radiating portion (O1) in the holder 140, it is possible to effectively discharge the heat of the battery cell 110 generated during the use of the secondary battery pack 100, The lifespan of the secondary battery pack 100 may be greatly improved.
- the partition wall 144 may protrude upward from the main body part 142 so as to surround at least a portion of the side portion of the battery cell 110 in the horizontal direction.
- the partition wall 144 may extend along a horizontal side of the battery cell 110.
- the partition wall 144 may be in contact with or adjacent to the first side edge 142a, the second side edge 142b, the third side edge 142c, and the fourth side edge 142d of the main body 142. Can be formed.
- the protruding heights of the partition walls 144 formed on the first side edges 142a, the second side edges 142b, the third side edges 142c, and the fourth side edges 142d may be different from each other.
- the horizontal thicknesses of the partition walls 144 formed on the first side edges 142a, the second side edges 142b, the third side edges 142c, and the fourth side edges 142d may also be different from each other.
- the partition wall 144c formed on the third side edge 142c is disposed on the remaining first side edge 142a, the second side edge 142b, and the fourth side edge 142d.
- the heights protruding upwards from the formed partitions 144a, 144b, and 144d are the highest, and the thickness in the horizontal direction is the thickest.
- the third side surface 142c of the holder 140 may be positioned adjacent to an outer wall of an exterior case of the electronic device using the secondary battery pack 100 as a power source.
- the protruding height or thickness of any one of the partitions 144a, 144b, 144c, and 144d formed on the side surfaces of the holder 140 of the present invention is remaining.
- the holder 140 may be formed at a portion open to the outside so that the other printed circuit board 126 may protrude outward in the horizontal direction, that is, at the first side 142a of the main body 142.
- the partition wall 144a may include a portion where the barrier rib 144a is not formed. Accordingly, the other printed circuit board 126 may be connected to the printed circuit board 121 without additionally bending or deforming, thereby improving manufacturing efficiency and space utilization.
- the secondary battery pack 100 of the present invention may further include an insulating molding member 130 made of an electrically insulating material.
- the electrically insulating material may be a polymer compound having low electrical conductivity.
- the insulating molding member 130 may be a polymer resin, silicone, rubber, or the like.
- the insulating molding member 130 may be configured in a form in which the hot melt polymer resin is cured.
- the hot melt resin may be a hot-melt resin.
- the hot melt resin may be a non-solvent resin, which may be a thermoplastic resin that is solid at room temperature or melts at a melting point or more when heated, and solidifies by cooling to form an adhesive.
- the thermoplastic resin may be any one or more of polystyrene, polyvinyl chloride, acrylic resin, polyethylene, polypropylene, and polyester.
- the insulating molding member 130 may be formed by a hot-melt injection molding apparatus.
- the hot melt injection molding apparatus may include a resin supply part, a temperature control part, and a work part.
- the resin supply unit may be configured to inject the molten resin at a constant temperature.
- the temperature controller may include a heater or a cooler so that the temperature of the mold is kept constant.
- the working part may include a mold and a control pad.
- the insulating molding member 130 formed of a hot melt resin does not contain a solvent containing a harmful component, the safety of the manufacturer and the user when configuring the insulating molding member 130 Can increase.
- the insulating molding member 130 may be formed on the upper and lower surfaces of the printed circuit board 121. That is, the insulating molding member 130 may have a configuration in which elements or components are mounted on the printed circuit board 121 and then a high temperature resin melted on the upper surface is cured and the applied resin is cured while cooling. .
- the insulating molding member 130 it is possible to stably protect the elements and components mounted on the printed circuit board 121. Accordingly, the present invention can effectively prevent the elements and components of the printed circuit board 121 from being damaged or separated due to external impact.
- the insulating molding member 130 may be formed of a transparent material from at least one surface to the other surface.
- the insulating molding member 130 may include a transparent material so that the mounted elements and parts of the printed circuit board 121 may be visually checked.
- the insulating molding member 130 may be formed of a transparent material as a whole so that the outer surface of the printed circuit board 121 may be transmitted therethrough.
- FIG. 6 is a schematic partial cross-sectional view of a rechargeable battery pack cut along line C-C of FIG. 3.
- the insulating molding member 130 may include a protection part 132 and a fixing part 134.
- the protection part 132 may be a portion joined to cover at least a portion of the printed circuit board 121.
- the insulating molding member 130 may have a shape in which the printed circuit board 121 is entirely covered so that the printed circuit board 121 is not exposed to the outside.
- the protection part 132 may be formed to cover the entire outer surface of the printed circuit board 121.
- the insulating molding member 130 is provided with a protective portion 132 configured to cover at least part of the printed circuit board 121, so that the printed circuit board 121 is a pouch. Short-circuit with the metal thin film provided in the exterior member 115 can be effectively prevented.
- the insulating molding member 130 may be bonded to the terrace structure 117S of the battery cell 110.
- the insulating molding member 130 may be manufactured by injecting hot melt resin in a state where the protection circuit module 120 is positioned on the terrace structure 117S of the battery cell 110 and then solidifying the insulating molding member 130. Can be.
- the insulating molding member 130 may have a terrace structure 117S of the battery cell 110 so that the protection circuit module 120 may be fixed on the terrace structure 117S of the battery cell 110. It may have a form bonded to the phase.
- the insulating molding member 130 has a form bonded to the terrace structure 117S of the battery cell 110, so that the protective circuit module 120 is the battery It can be stably fixed on the terrace structure 117S of the cell 110, and the adhesive member that has been used in the prior art can be omitted, thereby reducing the manufacturing cost.
- the fixing part 134 may protrude and extend from the protection part 132 in the direction in which the partition wall 144 is positioned.
- an end portion of the fixing portion 134 in the protruding direction may be fixed on a portion of the partition wall 144.
- three fixing parts 134 may be formed in the insulating molding member 130.
- the three fixing parts 134 protrude from the front part of the protection part 132 to the front where the partition wall 144 is formed when viewed directly in the F direction, and protrude from the fixing part 134.
- the end portion may be fixedly coupled to an upper surface and a front surface of the partition wall 144 formed in the holder 140.
- the insulating molding member 130 is protruding from the protection portion 132 in the direction in which the partition wall 144 is located and fixed to a portion of the partition wall 144 is fixed.
- the horizontal flow of the battery cell 110 mounted in the holder 140 can be effectively prevented, and the partition wall 144 and the battery cell 110 or the protection circuit module according to frequent flows are prevented.
- By effectively preventing the collision between the 120 it is possible to minimize the damage occurring during the use of the product.
- the fixing part 134 of the insulating molding member 130 of FIG. 6 protrudes and extends from the protection part 132 in the direction in which the partition wall 144 is positioned.
- an end portion of the fixing part 134 may have an end portion protruding from the front surface of the protective part 132 of the insulating molding member 130 in a downward direction on the front surface of the partition wall 144. have.
- three fixing parts 134 may be formed in the insulating molding member 130.
- an end portion of each of the three fixing parts 134 extending in the extending direction may have a form extending in a downward direction on the front portion of the partition 144, and the fixing part 134 may have an overall shape. It may be formed in the same shape as the hook structure (S) hanging on the front portion of the partition 144.
- the fixing portion 134 of the hook structure (S) when viewed in the F direction can prevent the battery cell 110 from moving in the front and rear direction, the The structure of the battery cell 110 or the connection structure between the electrode lead 111 and the printed circuit board 121 connected to each other may be prevented.
- FIG. 7 is a partial perspective view schematically illustrating a part of a rechargeable battery pack according to another exemplary embodiment of the present invention.
- 8 is a schematic partial cross-sectional view of a rechargeable battery pack cut along the line D-D of FIG. 7.
- the holder 140B of the rechargeable battery pack 100B may include at least an insertion hole H1 penetrating in a horizontal direction through the partition wall 144B of the holder 140B.
- One or more may be formed.
- the insertion hole H1 may be elongated along an extended horizontal direction of the partition 144B.
- a portion of the fixing part 134B of the insulating molding member 130B may be inserted into the insertion hole H1 to be fixed.
- a part of the fixing part 134B inserted into the insertion hole H1 may be formed to be connected to the other part bent in the lower direction by the partition wall 144B. That is, the fixing part 134B of the insulating molding member 130B may have a ring shape inserted into and fixed to the insertion hole H1 formed in the partition wall 144B.
- three fixing parts 134B of the insulating molding member 130B may be formed.
- the lengths extending in the left and right directions of the three fixing parts 134B may be different from each other.
- Each of the three fixing parts 134B protrudes from the front surface of the protection part 132B, extends from the top of the partition 144B to the lower direction, and the insertion hole H1 of the partition 144B.
- the through-inserted portions may meet each other and be in a solidified form.
- the holder 140 of the present invention includes a curved portion 146 curved in an arc shape on a portion of the partition wall 144 extending along the outer circumference of the main body portion 142. Can be formed.
- the bent portion 146 of the partition 144, the partition 144a formed on the first side 142a of the body portion 142 and the partition 144c formed on the third side 142c mutually. It can be formed at the location where it meets.
- the bent portion 146 of the partition 144 may have a partition 144c formed at the third side 142c of the main body 142 and a partition 144b formed at the second side 142b. Can be formed in position.
- the bent portion 146 of the partition 144 may have a partition 144a formed on the first side 142a of the main body 142 and a partition 144d formed on the fourth side 142d. Can be formed in position.
- the bent portion 146 formed at the position where the partition wall 144a formed on the first side edge 142a of the main body portion 142 and the partition wall 144d formed on the fourth side edge 142d meet with each other is the first side edge.
- the bent portion 146 of the partition wall 144a of the 142a may be formed to be bent to protrude in the horizontal direction than the remaining portion is not formed. That is, internal spaces as much as protruding may be formed inside the bent portion 146 of the partition 144.
- the holder 140 of the present invention by forming the bent portion 146 in the partition 144, the partition 144 is transferred by the flow of the battery cell 110.
- the bar can elastically absorb the pressing force in the horizontal direction, thereby increasing the durability of the holder 140, it is possible to reduce the damage due to the pressing force of the battery cell (110).
- FIG. 9 is a partial cross-sectional view schematically showing a part of a secondary battery pack according to another exemplary embodiment of the present invention.
- the holder 140C of the secondary battery pack 100C of FIG. 9 may further include a molding blocking wall 148 protruding upwardly as compared to the holder 140 of FIG. 6.
- the molding blocking wall 148 of the holder 140C may be formed at a position spaced apart from the partition wall 144 by a predetermined distance in an outward direction. That is, the fixing part 134C of the insulating molding member 130 may be filled and solidified in the space between the molding blocking wall 148 and the partition wall 144.
- the fixing part 134C of the insulating molding member 130 protrudes from the front surface of the protection part 132C, and the extended end of the fixing part 134C is It may have a shape bent in a downward direction along the inner surface of the molding barrier wall 148.
- the hot melt resin injected to form the insulating molding member 130 is external to the holder 140C. Can be prevented from leaking. Accordingly, the manufacturing efficiency can be improved and the defect rate can be effectively lowered.
- the molding block 148 may serve as a guide so that the fixing part 134C can be stably extended downwardly along the partition wall 144, so that the defective rate of the product. Can significantly reduce the
- the lower surface 130c of the insulating molding member 130 is configured to be coplanar with the lower surface 116c of the accommodating part 116 of the battery cell 110.
- the lower surface 130c of the insulating molding member 130 facing the upper surface of the main body portion 142 of the holder 140C is the lower surface of the accommodating portion 116 of the battery cell 110.
- And may be formed to be parallel to 116c.
- the present invention it is possible to prevent the height difference in the vertical direction of the height of the housing portion 116 of the battery cell 110 and the vertical direction of the portion where the insulating molding member 130 is located.
- the label paper attached to the upper portion of the battery cell 110 is not formed a structure that worsens the appearance, such as a step is generated or wrinkles in the vertical direction, it is possible to form a smooth outer surface of the label paper smoothly. Accordingly, in the present invention, the worker can easily handle the secondary battery pack and can manufacture the secondary battery pack 100 having excellent appearance.
- the protection part 132 of the insulating molding member 130 may have an indentation groove H2 embedded in a horizontal inner direction on an outer surface thereof. .
- a portion of the electrode lead 111 may be accommodated on the inner surface of the indentation groove H2.
- the electrode lead 111 may be bent to extend downward from the end of the sealing portion 117, and may be bent in the direction in which the accommodating portion 116 of the battery cell 110 is positioned.
- an end of the bent electrode lead 111 may be bonded to a lead connecting plate 123 formed on one surface of the printed circuit board 121 of the protective circuit module 120.
- the middle portion of the electrode lead 111 in the extended direction may be positioned to be in close contact with the inner surface of the indentation groove H2 formed in the protection part 132 of the insulating molding member 130.
- each of the anode lead 111A and the cathode lead 111B is formed in the indentation groove H2 formed in the protection part 132 of the insulating molding member 130. It may have a bent shape to be in close contact with the inner surface of the).
- the length of the electrode lead 111 connected to the printed circuit board 121 by the indentation groove H2 formed in the insulating molding member 130 can be minimized, thereby reducing the material cost.
- the power supply device (not shown) according to the present invention may include the secondary battery pack 100.
- the power supply device may be a device that temporarily stores the generated power and stores electrical energy to supply the power where it is needed.
- the electronic device according to the present invention may include the power supply device.
- the power supply device may be accommodated inside an exterior case of the electronic device.
- battery cell 121 printed circuit board
- sealing unit 117S terrace structure
- fixing part H2 indentation groove
- the present invention relates to a secondary battery pack having a holder.
- the present invention can be used in industries related to power supply devices and electronic devices provided with the secondary battery pack.
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- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Inorganic Chemistry (AREA)
- Battery Mounting, Suspending (AREA)
- Secondary Cells (AREA)
Abstract
Description
Claims (11)
- 전극조립체, 상기 전극조립체와 전해액이 수용된 수납부 및 상기 수납부의 외주변을 밀봉하여 형성된 실링부를 가진 파우치 외장재, 및 상기 실링부로부터 돌출 연장되도록 형성된 전극 리드를 구비하는 전지셀;보호회로가 형성된 인쇄회로기판을 구비하고, 상기 인쇄회로기판이 상기 실링부 중 상기 전극 리드가 형성된 테라스 구조 상에 안착된 보호회로모듈;일면에 상기 전지셀을 탑재하도록 플레이트 형상을 가진 본체부, 및 상기 본체부로부터 상기 전지셀의 수평 방향의 측부의 적어도 일부를 둘러싸도록 상부 방향으로 돌출 형성된 격벽이 구비된 홀더; 및전기 절연성 재질로 구성되고, 상기 인쇄회로기판의 적어도 일부위를 피복하여 접합된 보호부, 및 상기 보호부로부터 상기 격벽이 위치한 방향으로 돌출 연장되고 상기 격벽의 일부위에 고정된 고정부가 구비된 절연성 몰딩 부재를 포함하는 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 절연성 몰딩 부재의 고정부는, 상기 보호부로부터 상기 격벽이 위치한 방향으로 돌출 연장된 단부가 상기 격벽을 타고 하부 방향으로 절곡된 후크 구조를 가진 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 홀더의 격벽에는 수평 방향으로 관통된 삽입구가 형성되고, 상기 삽입구에는 상기 절연성 몰딩 부재의 고정부의 일부위가 삽입되어 고정된 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 격벽은, 상기 본체부의 외주를 따라 연장되고, 일부위에 평면상으로 원호 형상으로 굽어진 굴곡부가 형성된 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 홀더는, 상기 격벽과 외측 방향으로 소정 거리로 이격되고 상부 방향으로 돌출 연장된 몰딩용 차단벽이 형성된 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 절연성 몰딩 부재는, 상기 인쇄회로기판이 외부로 노출된 부위가 없도록 상기 인쇄회로기판을 전체적으로 피복한 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 절연성 몰딩 부재의 하부면은, 상기 전지셀의 수용부의 하부면과 동일 평면 상에 위치하도록 구성된 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 절연성 몰딩 부재의 보호부의 외측면에는, 수평 내부 방향으로 내입된 만입홈이 형성되고,상기 만입홈에는 상기 전극 리드의 일부위가 수용되도록 구성된 것을 특징으로 하는 이차전지 팩.
- 제1항에 있어서,상기 홀더의 본체부에는 상기 전지셀에서 발생된 열을 배출되는 상하 방향으로 개구된 방열부가 형성된 것을 특징으로 하는 이차전지 팩.
- 제1항 내지 제9항 중 어느 한 항에 따른 이차전지 팩을 포함하는 전원 장치.
- 제10항에 따른 전원 장치를 포함하는 전자 디바이스.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US16/753,878 US11367922B2 (en) | 2018-06-29 | 2018-12-12 | Secondary battery pack having holder |
JP2020516880A JP7069301B2 (ja) | 2018-06-29 | 2018-12-12 | ホルダーを備えた二次電池パック |
CN201880061595.8A CN111133606B (zh) | 2018-06-29 | 2018-12-12 | 具有保持器的二次电池组 |
EP18924007.0A EP3686951A4 (en) | 2018-06-29 | 2018-12-12 | SECONDARY BATTERY KIT WITH HOLDER |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020180075878A KR102289963B1 (ko) | 2018-06-29 | 2018-06-29 | 홀더를 구비한 이차전지 팩 |
KR10-2018-0075878 | 2018-06-29 |
Publications (1)
Publication Number | Publication Date |
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WO2020004741A1 true WO2020004741A1 (ko) | 2020-01-02 |
Family
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Application Number | Title | Priority Date | Filing Date |
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PCT/KR2018/015798 WO2020004741A1 (ko) | 2018-06-29 | 2018-12-12 | 홀더를 구비한 이차전지 팩 |
Country Status (6)
Country | Link |
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US (1) | US11367922B2 (ko) |
EP (1) | EP3686951A4 (ko) |
JP (1) | JP7069301B2 (ko) |
KR (1) | KR102289963B1 (ko) |
CN (1) | CN111133606B (ko) |
WO (1) | WO2020004741A1 (ko) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110071254B (zh) * | 2018-01-23 | 2022-09-09 | 东莞新能德科技有限公司 | 一种电池及其制备方法 |
CN114747070B (zh) * | 2020-06-30 | 2024-03-19 | 东莞新能德科技有限公司 | 电池、电池组件、电池组及电子装置 |
KR102514511B1 (ko) * | 2021-02-10 | 2023-03-27 | 삼성에스디아이 주식회사 | 배터리 팩 및 배터리 팩의 제조 방법 |
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- 2018-12-12 US US16/753,878 patent/US11367922B2/en active Active
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EP3686951A4 (en) | 2021-01-27 |
JP2020534664A (ja) | 2020-11-26 |
US11367922B2 (en) | 2022-06-21 |
KR20200002416A (ko) | 2020-01-08 |
CN111133606B (zh) | 2022-07-08 |
EP3686951A1 (en) | 2020-07-29 |
KR102289963B1 (ko) | 2021-08-12 |
JP7069301B2 (ja) | 2022-05-17 |
US20210104799A1 (en) | 2021-04-08 |
CN111133606A (zh) | 2020-05-08 |
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