WO2016175590A1 - 배터리 팩 및 그 제조 방법 - Google Patents
배터리 팩 및 그 제조 방법 Download PDFInfo
- Publication number
- WO2016175590A1 WO2016175590A1 PCT/KR2016/004481 KR2016004481W WO2016175590A1 WO 2016175590 A1 WO2016175590 A1 WO 2016175590A1 KR 2016004481 W KR2016004481 W KR 2016004481W WO 2016175590 A1 WO2016175590 A1 WO 2016175590A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- end plate
- lower housing
- battery pack
- housing
- cell assembly
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000007769 metal material Substances 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 23
- 238000010168 coupling process Methods 0.000 claims description 19
- 230000008878 coupling Effects 0.000 claims description 18
- 238000005859 coupling reaction Methods 0.000 claims description 18
- 238000003780 insertion Methods 0.000 claims description 16
- 230000037431 insertion Effects 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 239000004033 plastic Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 229910052744 lithium Inorganic materials 0.000 description 7
- 238000010292 electrical insulation Methods 0.000 description 5
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000003792 electrolyte Substances 0.000 description 4
- 239000005022 packaging material Substances 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000007773 negative electrode material Substances 0.000 description 2
- 239000007774 positive electrode material Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/045—Cells or batteries with folded plate-like electrodes
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/105—Pouches or flexible bags
-
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/222—Inorganic material
- H01M50/224—Metals
-
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/227—Organic material
-
- 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
- H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
- H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
- H01M50/229—Composite material consisting of a mixture of organic and inorganic materials
-
- 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
- H01M50/264—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks for cells or batteries, e.g. straps, tie rods or peripheral frames
-
- 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
- H01M50/271—Lids or covers for the racks or secondary casings
- H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
- H01M50/278—Organic material
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a battery including at least one secondary battery, and more particularly, to a battery pack having an improved energy density, improved assemblability, and improved durability, an automobile including the same, and a method of manufacturing the battery pack. It is about.
- 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 that seals the electrode assembly together with the electrolyte solution, that is, a battery case.
- 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, depending on the shape of the exterior material.
- secondary batteries are widely used not only in small devices such as portable electronic devices but also in medium and large devices such as automobiles and power storage devices. When used in such medium and large devices, a large number of secondary batteries are electrically connected to increase capacity and output.
- the pouch-type secondary battery is widely used in such a medium-large device because of its advantages such as easy lamination and light weight.
- an end plate may be provided at both outermost ends of the cell assembly in the stacking direction.
- the end plate is mainly composed of a metal material, and may serve to protect and fix the secondary battery and the cartridge and maintain the surface pressure.
- the structure in which the end plate and the pack case are fixed by the fastening member may loosen the fastening state when exposed to vibration or shock due to the continuous use of the battery pack, thereby fixing the cell assembly inside the pack case.
- the state may not be stable. In addition, this may cause breakage and damage of various components included in the battery pack, which may cause a failure of the battery pack.
- the assembly process of the end plate and the pack case is not easy, and a fastening member for fixing the end plate and the pack case is further required, and the fastening member is attached to the pack case.
- the process to prepare in advance is not easy, and there exists a problem that productivity falls and manufacturing cost increases.
- a plastic material is often used as a pack case for accommodating the cell assembly.
- the rigidity is not high, and thus there is a disadvantage in that it is weak in impact.
- the present invention has been made to solve the above problems, the assembly, fairness and productivity is improved, the manufacturing cost is reduced, the sealing and durability of the pack case and the battery pack and its manufacturing method, And it aims at providing the motor vehicle containing such a battery pack.
- a battery pack including a plurality of secondary batteries, and a cell assembly including a plurality of cartridges that are stackable with each other and which surround the outer circumferential portion of the secondary battery from the outside to accommodate the secondary batteries;
- a lower housing having an empty space therein to receive the cell assembly in the inner space and having an open top;
- a lower end plate formed of a plate-shaped metal material and disposed in surface contact with a lower surface of the lower housing;
- a lower cover positioned below the lower end plate to cover the lower end plate and fixedly coupled to the lower housing.
- the lower cover may be fixedly coupled to the lower housing by laser welding.
- the lower cover may be made of the same plastic material as the lower housing.
- the lower cover may be fixedly coupled to the lower housing outside the edge along the edge of the lower end plate.
- the lower end plate may have one or more openings formed in a central portion thereof, and the lower cover may be fixedly coupled to the lower housing through the openings.
- the uneven portion may be formed in a form corresponding to each other.
- the lower end plate may have one or more bolts formed to protrude upward, and the lower housing may have one or more through-holes to allow the bolts to pass therethrough.
- the cell assembly may include one or more insertion holes, and the bolt may be inserted into the insertion hole.
- the cell assembly may be configured such that the secondary battery and the cartridge are stacked in the vertical direction, and the cartridge located at the lowest layer in the cell assembly may be seated in contact with the lower surface of the inner space of the lower housing. .
- the battery pack according to the present invention may further include an upper end plate formed of a plate-shaped metal material and provided on an upper portion of the cell assembly to cover an upper portion of the cell assembly.
- the battery pack according to the present invention may further include an upper housing coupled to the upper open end of the lower housing to seal the upper open end.
- the vehicle according to the present invention for achieving the above object includes a battery pack according to the present invention.
- the battery pack manufacturing method for achieving the above object, the lower end of the lower housing having an empty space therein is configured in the form of an open, the lower end plate made of a plate-like metal material interview Placing in moist form; Positioning a lower cover below the lower end plate to cover the lower end plate; Coupling the lower cover and the lower housing to each other; And stacking a cartridge for accommodating the secondary battery in a form surrounding the secondary battery and the outer circumference of the secondary battery in an inner space of the lower housing.
- the coupling fixing step may be performed by a laser welding method.
- the lower end plate is provided with one or more bolts formed to protrude in the upper direction
- the lower housing is formed with one or more through holes, the step of placing the lower end plate, the lower hole in the through hole of the lower housing The bolt of the end plate may be carried out.
- one or more insertion holes are formed in the cartridge, and the stacking of the secondary battery and the cartridge may be performed such that the bolt of the lower end plate is inserted into the insertion hole of the cartridge.
- a fastening configuration for coupling the end plate for protecting the cell assembly and securing rigidity with the pack case does not need to be separately provided in the lower end plate and the pack case.
- the assemblability and processability of the battery pack can be improved, and the manufacturing cost and time can be reduced by reducing the parts. Further, according to this aspect of the present invention, it is not necessary to provide a space for providing a fastening configuration between the end plate and the pack case, and a working space for forming such a fastening configuration, inside the pack case. Therefore, the space utilization of the battery pack is increased, and unnecessary space is eliminated inside the battery pack, so that energy density improvement and miniaturization can be more easily achieved.
- the fixing force of the cell assembly in the pack case can be improved. Therefore, breakage or failure of the battery pack due to the flow of the cell assembly can be prevented.
- the lower end plate is embedded in the pack case, in particular between the lower housing and the lower cover, thereby improving the rigidity of the pack case itself.
- the pack case especially the lower housing, is prevented from being damaged, thereby safely protecting the components of the battery pack located inside the lower housing, such as the cell assembly or the electronics. I can protect it.
- the sealing property of the pack case can be improved due to the lower end plate located inside the pack case.
- the sealing property of the pack case can be improved due to the lower end plate located inside the pack case. For example, even if a shock is applied to the pack case and the lower cover is somewhat damaged, the penetration of foreign matter such as moisture, needles, stones, etc. into the lower housing due to the end plate can be minimized.
- the likelihood of penetrating foreign matter during use is high, but according to this aspect of the present invention, durability can be secured stably.
- FIG. 1 is a combined perspective view schematically showing the configuration of a battery pack according to an embodiment of the present invention.
- FIG. 2 is an exploded perspective view showing the configuration of FIG. 1 separately.
- FIG. 3 is a perspective view schematically showing the configuration of a cartridge and a secondary battery according to an embodiment of the present invention.
- FIG. 4 is a perspective view schematically showing a configuration in which a lower cover is coupled with a lower housing.
- FIG. 5 is a cross-sectional view taken along line A1-A1 'of FIG.
- FIG. 6 is a bottom view of FIG. 4.
- FIG. 7 is an exploded perspective view schematically illustrating a configuration of a battery pack according to an embodiment of the present invention.
- FIG. 8 is a combined perspective view of FIG. 7.
- FIG. 9 is a flowchart schematically illustrating a method of manufacturing a battery pack according to an embodiment of the present invention.
- FIG. 1 is a combined perspective view schematically showing the configuration of a battery pack according to an embodiment of the present invention.
- 2 is an exploded perspective view showing the configuration of FIG. 1 separately.
- a battery pack according to the present invention includes a cell assembly 100, a lower housing 200, a lower end plate 300, and a lower cover 400.
- the cell assembly 100 may include a plurality of secondary batteries and a cartridge.
- the secondary battery is a component that stores or emits electrical energy through charge and discharge, and may be in the form of a pouch type secondary battery.
- a secondary battery may include an electrode assembly, an electrolyte, and a pouch packaging material.
- the secondary battery according to the present invention may be a lithium secondary battery.
- 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 classified into a winding type in which one positive electrode plate and one negative electrode plate are wound together with a separator, and 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 may be configured to include an outer insulating layer, a metal layer, and an inner adhesive layer.
- the pouch sheath may be formed of 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. have.
- such an aluminum thin film is formed between an insulating layer formed of an insulating material, that is, an outer insulating layer and an inner layer, in order to ensure electrical insulation between components inside a secondary battery such as an electrode assembly and an electrolyte or other components outside the secondary battery. It may be interposed between the adhesive layers.
- the pouch sheath may be composed of two pouches, and at least one of the pouch sheaths may have a concave inner space.
- the electrode assembly may be accommodated in the inner space of the pouch.
- the outer peripheral surfaces of the two pouches are provided with a sealing portion such that the sealing portions are fused to each other, so that the inner space in which the electrode assembly is accommodated can be sealed.
- each electrode plate of the electrode assembly is provided with an electrode tab, one or more electrode tabs may be connected to the electrode lead.
- the electrode lead is interposed between the sealing portions of the two pouches and exposed to the outside of the pouch packaging material, thereby functioning as an electrode terminal of the secondary battery.
- the secondary battery may be included in a battery pack.
- such a plurality of secondary batteries may be arranged in a vertical direction in such a manner that their wide sides face down to face the top and the bottom.
- the cartridge may be configured to accommodate the secondary battery in the inner space, and in particular to surround the outer circumferential portion of the secondary battery from the outside.
- FIG 3 is a perspective view schematically showing the configuration of the cartridge 120 and the secondary battery 110 according to an embodiment of the present invention.
- the cartridge 120 may include a main frame 121 formed in a substantially rectangular ring shape.
- the main frame 121 of the cartridge 120 may be composed of four unit frames connected at both ends.
- the cartridge 120 may be provided in a form in which each unit frame is separately manufactured and then assembled together, or may be molded into an integrated form from the beginning.
- the pouch type secondary battery 110 may be configured in a substantially rectangular shape. Therefore, as in the above embodiment, when the main frame 121 of the cartridge 120 is formed in a rectangular ring shape, the secondary battery 110 is positioned in an empty space at the center to surround the edge of the secondary battery from the outside. Can be configured. Therefore, the cartridge 120 may accommodate the secondary battery 110 and protect the outside of the secondary battery 110.
- the cartridge 120 may include a cooling plate 122 made of a thermally conductive material at a central portion thereof.
- the cartridge 120 may include a cooling plate 122 made of aluminum at a central portion of the square ring defined by the main frame 121.
- the cooling plate 122 may be composed of two plates spaced apart by a predetermined distance in the vertical direction, that is, the upper plate and the lower plate.
- a flow path P is formed between the two cooling plates 122 such that a refrigerant such as air may move.
- one secondary battery 110 may be accommodated in the upper portion of the upper plate and the lower portion of the lower plate, respectively. In this case, it can be said that two secondary batteries 110 are accommodated in one cartridge 120.
- heat generated from the secondary battery 110 may be transferred to the adjacent cooling plate 122 and discharged to the outside through the refrigerant flowing in the flow path between the cooling plates 122.
- the cartridge 120 may be configured to be stacked on each other.
- the cartridge 120 may be included in a plurality of battery packs.
- the cartridges 120 may be stacked in a vertical direction.
- the cartridge 120 may have a concave-convex structure in a shape corresponding to a surface stacked on each other, for example, an upper surface and a lower surface of the main frame 121.
- the concave-convex structure formed on the cartridge 120 due to the concave-convex structure formed on the cartridge 120, the fastening property and fixing force between the cartridges 120 may be improved, and the concave-convex structure may serve as a guide, thereby making assembly easier.
- the cartridge 120 accommodates the pouch-type secondary battery 110 in an internal space formed through stacking, thereby limiting external exposure of the pouch-type secondary battery 110 to prevent the secondary battery from being externally physical or chemical. While protecting the 110 and guiding the mutual arrangement of the pouch-type secondary battery 110, it is possible to prevent the flow of the stacked assembly.
- a fastening hole may be formed on at least one side.
- the cartridge 120 as indicated by H1 in FIG. 3, at least one of the four unit frames, or to provide a fastening hole in the form of penetrating in the vertical direction in the corner portion where the two unit frames meet. Can be.
- the lower housing 200 may have an empty space therein to accommodate the cell assembly 100.
- the lower housing 200 may be configured to have an open top, such that the cell assembly 100 may be introduced into an internal space through the upper open part. That is, the lower housing 200 may form an inner space in a form in which a lower portion and a side portion are blocked and an upper portion is opened.
- the lower housing 200 may be made of a plastic material.
- the plastic material it is easy to mold, light in weight, and excellent in electrical insulation, and thus it may be easier to improve productivity of the battery pack, and to secure weight and insulation.
- the lower end plate 300 may have a plate shape, that is, a wide plate shape.
- the lower end plate 300 may be made of a metal material to ensure rigidity.
- the lower end plate 300 may be formed of a rectangular plate made of steel.
- the lower end plate 300 may be located under the lower housing 200. That is, the lower end plate 300 may be disposed below the lower housing 200 in a form lying down on the ground so that the upper surface may directly contact the lower surface of the lower housing 200.
- the lower cover 400 may be formed in a plate shape and positioned below the lower end plate 300 to cover the lower end plate 300.
- the lower cover 400 may be configured to have an area larger than the surface area of the lower end plate 300 so that the lower surface of the lower end plate 300 is not exposed to the outside.
- the lower cover 400 may be made of a plastic material similar to the lower housing 200.
- the lower cover 400 may be combined with the lower housing 200.
- FIG. 4 is a perspective view schematically illustrating a configuration in which the lower cover 400 is coupled to the lower housing 200.
- 5 is a cross-sectional view taken along line A1-A1 'of FIG. 4
- FIG. 6 is a bottom view of FIG. 4.
- the lower cover 400 may be fixed to the lower housing 200 by combining at least a portion thereof with the lower housing 200.
- the lower end plate 300 may be interposed between the lower cover 400 and the lower housing 200. That is, the lower end plate 300 may exist between the coupling configuration of the lower cover 400 and the lower housing 200, and thus the lower end plate 300 may not be generally exposed to the outside.
- the pack case of the battery pack according to the present invention includes a lower housing 200, a lower end plate 300, and a lower cover 400.
- the lower cover 400 and the lower housing 200 may be made of a polymer material such as plastic, and the lower end plate 300 may be made of a metal material.
- the pack case may be said to have a form in which a metal plate is embedded in a body made of a plastic material.
- the pack case may be mainly composed of a polymer material to ensure electrical insulation, light weight and formability.
- the rigidity of the pack case is reinforced by the lower end plate 300 made of metal embedded in the pack case, so that the pack case is not easily damaged by an external impact, thereby protecting other components inside the battery pack.
- the sealing property of the pack case may be reinforced, and foreign matters such as moisture or acicular bodies may not penetrate through the pack case.
- the lower cover 400 may be fixedly coupled to the lower housing 200 by laser welding.
- the lower cover 400 may be fused to each other by irradiating a laser to a portion in direct contact with the lower housing 200.
- the lower cover 400 may be a transmission material for laser welding
- the lower housing 200 may be an absorption material for laser welding.
- the strength can be controlled, and the welding of fine size is possible by transferring energy by focusing to a very small point, and the thermal deformation or material properties of the lower cover 400 and the lower housing 200 to be welded. May have an advantage of less deterioration.
- various laser welding methods known at the time of filing the present invention such as CO 2 laser welding and YAG laser welding, may be used.
- the lower cover 400 may be made of the same plastic material as the lower housing 200. According to this configuration of the present invention, when the laser welding of the lower housing 200 and the lower cover 400, the weldability is improved, it is possible to ensure a stable coupling force of the lower housing 200 and the lower cover 400.
- the lower cover 400 may be coupled and fixed in a state of directly contacting the lower housing 200 through laser welding or the like.
- the lower cover 400 may be fixedly coupled to the lower housing 200 at the outside of the lower end plate 300 along the edge of the lower end plate 300.
- the lower cover 400 may be welded to the lower housing 200 by irradiating a laser beam to an outer circumferential portion, such as a portion indicated by L1 in FIGS. 5 and 6.
- the shape of the laser welded portion may be configured in a substantially rectangular shape.
- the lower end plate 300 is interposed between the lower cover 400 and the lower housing 200, in order for the lower cover 400 to be directly coupled to the lower housing 200, the lower end plate 300 is not located. It is preferable that the combination of the lower cover 400 and the lower housing 200 is located at a portion that is not. Accordingly, the lower cover 400 may be configured to be in direct contact with the lower housing 200 outside the edge of the lower end plate 300, as indicated by L1 in FIG. 5. In order to achieve this configuration more easily, the lower cover 400 is configured such that the horizontal surface area is similar to the lower surface area of the lower housing 200, but is configured to be wider than the lower end plate 300. That is, the lower end plate 300 may be configured to have a smaller horizontal area than the lower housing 200 or the lower cover 400. And, by using the size difference, the lower cover 400 may be coupled to the lower housing 200 in the outer peripheral portion.
- the lower cover 400 may be fixed to the lower housing 200 in a portion other than the outer circumferential portion.
- the lower cover 400 as indicated by L2 in FIGS. 5 and 6, may be directly welded to the lower housing 200 by irradiating a laser to a central portion.
- the coupling force between the lower cover 400 and the lower housing 200 is secured stably. Can be.
- the lower cover 400 and the lower housing 200 may be configured in a rectangular shape as viewed from the bottom, in which case the lower cover 400 extends in a direction parallel to the long side of the lower cover 400. It can be welded to the lower housing 200 in the form of a bar. In addition, two or more welding parts having a rod shape may be disposed to be spaced apart from each other by a predetermined distance in the short side direction and the long side direction of the lower cover 400.
- the lower cover 400 is coupled in direct contact with the lower housing 200 at the central portion, and the lower end plate 300 may be interposed between the lower cover 400 and the lower housing 200.
- the lower end plate 300 may have an opening formed at a position corresponding to the coupling portion.
- the lower end plate 300 as indicated by O in FIGS. 2 and 6, a plurality of openings may be formed in the center portion to penetrate in the vertical direction.
- the lower cover 400 may be directly contacted with the lower housing 200 through the opening O of the lower end plate 300 to be coupled by welding or the like.
- the lower cover 400 and the lower housing 200 has been described mainly for the configuration that is coupled by the laser welding method, the present invention is not necessarily limited to this coupling method. That is, the lower cover 400 and the lower housing 200 may be fixedly coupled to each other in various ways other than the laser welding method.
- the lower cover 400 and the lower housing 200 may be molded by an insert injection method. That is, the lower cover 400 and the lower housing 200 are made of a polymer material and are injection-molded in a state where the lower end plate 300 of the metal material is inserted, thereby lowering the lower end plate 300 from the lower cover 400.
- the lower housing 200 may be configured to wrap.
- the lower cover 400 may be molded in an overmolding manner.
- the lower cover 400 is molded in the lower end of the lower end plate 300 in a state in which the lower end plate 300 is mounted to the lower portion of the lower housing 200, thereby, the lower housing 200 and the lower cover.
- the lower end plate 300 may be positioned between the 400.
- the lower housing 200 and the lower cover 400 may have an uneven portion formed in a form corresponding to each other.
- the lower housing 200 as shown in the portion indicated by L1 in Figure 5, the concave portion of the concave shape is formed in the upper direction, the lower cover 400 is formed convex portion in the convex shape in the upper direction. Can be. At this time, the convex portion of the lower cover 400 may be formed in a ring shape along the outer circumference of the lower cover 400.
- the lower housing 200 as shown in the portion indicated by L2 in Figure 5, the convex portion of the convex shape is formed in the lower direction
- the lower cover 400 may be formed concave portion of the concave shape in the lower direction. have.
- the convex portion and the concave portion may be formed in positions and shapes corresponding to each other. Each convex portion may be inserted into a recess corresponding to each other when the lower cover 400 is positioned below the lower housing 200 and the lower end plate 300.
- the coupling position of the lower cover 400 to the lower housing 200 can be easily selected through the uneven portion, the assemblability of the lower housing 200 and the lower cover 400 is improved. Can be.
- the uneven portion reduces the horizontal movement of the lower housing 200 and the lower cover 400 in the bonding step, such as welding, thereby improving the coupling processability of the lower housing 200 and the lower cover 400, the coupling is It can be made well so that the fixing force can be secured stably.
- these uneven parts may be present between the lower housing 200 and the lower end plate 300 and / or between the lower cover 400 and the lower end plate 300.
- a lower surface of the lower end plate 300 may have a protrusion formed in a lower direction
- an upper surface of the lower cover 400 may have a recess formed in a lower direction, and each protrusion may be inserted into the recess.
- a protrusion may be formed in an upper direction of the lower end plate 300, and a recess may be formed in an upper direction of the lower housing 200 to correspond to the protrusion.
- assembly between the lower housing 200 or the lower cover 400 and the lower end plate 300 may be performed more easily.
- the lower end plate 300 may include one or more bolts 310 protruding upward.
- the lower end plate 300 may include a plurality of long bolts 310 extending in an upward direction, and the lower end of the long bolts 310. Silver may be fixed to the body of the lower end plate 300 of the plate shape.
- the lower end of the long bolt 310 may be fixed to the body of the lower end plate 300 by a nut.
- the lower housing 200 may be formed with at least one through hole so that the bolt 310 penetrates.
- the lower housing 200 may have a plurality of through holes formed at positions and shapes corresponding to the long bolts 310. Therefore, when the lower end plate 300 is located below the lower housing 200, the long bolt 310 of the lower end plate 300 penetrates the through hole H2 of the lower housing 200 to lower the housing. It may be located in the interior space of the (200).
- the bolt 310 of the lower end plate positioned in the inner space of the lower housing 200 may pass through a portion of the cell assembly 100. That is, the cell assembly 100, as indicated by H1 in FIG. 2, may have one or more insertion holes formed in a vertically penetrated shape, and the bolt 310 of the lower end plate may be formed in the cell assembly 100. It may be inserted into the insertion hole (H1).
- the insertion hole H1 of the cell assembly 100 may be formed in each cartridge 120.
- the cell assembly 100 includes a plurality of cartridges 120 stacked in the vertical direction in a state of accommodating the secondary battery 110
- the outer periphery of each cartridge 120 is illustrated in FIG. 3.
- an insertion hole H1 having a shape penetrated in the vertical direction may be formed.
- the insertion holes H1 may be configured to be connected to each other, and the bolt 310 of the lower end plate may be inserted into the communication holes H1 communicated with each other. have.
- each cartridge 120 by preventing each cartridge 120 from moving in the inner space of the lower housing 200, the flow of the secondary battery 110 accommodated in the inner space of the cartridge 120 can also be prevented. Can be.
- the bolt 310 of the lower end plate is inserted into the insertion hole of each cartridge 120, thereby, Lamination can be guided.
- the lower end plate 300 on which the bolt 310 is mounted is fixed to the lower part of the lower case and the bolt 310 is connected to the lower housing through the through hole of the lower housing 200. Since it is retracted into the internal space of the 200, there is no fear that the mounting position of the bolt 310 is changed during use of the battery pack. Therefore, even when shock or vibration is applied to the battery pack, the position itself of the bolt 310 may be changed to block the movement of the cell assembly 100.
- the cell assembly 100 is first configured in a state in which a plurality of cartridges 120 and a plurality of secondary batteries 110 are stacked, and then it is not stored and fixed in the lower housing 200.
- the configuration of the cell assembly 100 and the storage in the lower housing 200 may be performed together. Therefore, according to this aspect of the present invention, manufacturing time can be shortened and processability can be improved.
- the cell assembly 100 may be configured in a form in which the secondary battery 110 and the cartridge 120 are stacked in the vertical direction, which is located at the lowest layer of the cell assembly 100.
- the cartridge 120 may be seated in contact with the lower surface of the inner space of the lower housing 200.
- the lower end plate 300 that can reinforce the rigidity of the cell assembly 100 is embedded in the pack case itself. Therefore, the end plate of the metal material does not need to be positioned separately under the cell assembly 100. Therefore, in the battery pack according to the present invention, the cartridge 120 may be located at the bottom of the cell assembly 100, not the end plate, and the cartridge 120 is directly at the lower surface of the inner space of the lower housing 200. Can be seated in contact with
- the lower housing 200 which may be made of a plastic material is interposed between the cell assembly 100 and the lower end plate 300, the cell assembly 100 and the lower end plate ( Electrical insulation between 300 may be secured.
- one lower end plate 300 may be provided with the rigid reinforcement of the pack case and the rigid reinforcement of the cell assembly 100.
- FIG. 7 is an exploded perspective view schematically illustrating a configuration of a battery pack according to an embodiment of the present invention
- FIG. 8 is a combined perspective view of FIG. 7.
- the battery pack according to the present invention may further include an upper end plate 600.
- the upper end plate 600 may be made of a plate-shaped metal material and may be provided on the cell assembly 100. In addition, the upper end plate 600 covers the upper part of the cell assembly 100 to fix the cell assembly 100 on the upper part of the cell assembly 100, to reinforce rigidity, and to maintain surface pressure, while external impact The cell assembly 100 can be protected from.
- the upper end plate 600 may be penetrated by the bolt 310 of the lower end plate. That is, the bolt 310 of the lower end plate may be configured to penetrate the upper end plate 600 together with the fastening hole H1 of the cartridge 120.
- the bolt 310 of the lower end plate As the bolt 310 of the lower end plate, the effect of fixing up to the upper end plate 600 can be obtained. Therefore, according to this configuration of the present invention, it is possible to reduce or eliminate separate fastening parts and space for fixing the lower housing 200 or the cell assembly 100 and the upper end plate 600. Therefore, the manufacturing process can be simplified, manufacturing cost and time can be reduced, and the space utilization inside the battery pack can be improved.
- the battery pack according to the present invention may further include an electric plate 700, as shown in FIG. 7.
- the electrical plate 700 is formed in a plate shape, and at least one electrical component of a BMS, a current sensor, a relay, and a fuse may be mounted on a surface thereof, and may be electrically connected to the secondary battery 110 of the cell assembly 100. have.
- the battery management system refers to a battery management device that generally controls the charge / discharge operation of the battery pack, and such a BMS is a component that is typically included in the battery pack.
- the current sensor is a component for sensing the charge and discharge current of the battery pack
- the relay is a switching component for selectively opening and closing the charge and discharge path through which the charge and discharge current of the battery pack flows.
- the fuse is a component that is provided on the charge / discharge path of the battery pack and is melted when an abnormal situation occurs in the battery pack to block the flow of charge / discharge current.
- the electrical plate 700 may be provided on the cell assembly 100.
- the electrical plate 700 may be positioned on the upper end plate 600. According to this configuration of the present invention, mounting, assembly, replacement, etc. of the electrical equipment can be facilitated.
- the electric plate 700 may be penetrated by the bolt 310 of the lower end plate. That is, the bolt 310 of the lower end plate may be configured to penetrate the electric plate 700 together with the fastening hole H1 of the cartridge 120, the upper end plate 600, and the like.
- the battery pack according to the present invention may further include a duct (D) for flowing in and out of the refrigerant, such as air into the cell assembly 100.
- the duct D may include an inlet duct for introducing refrigerant from the outside of the cell assembly 100 to the inside, and an outlet duct for flowing out the refrigerant from the inside of the cell assembly 100 to the outside.
- the inlet duct and the outlet duct may be disposed on opposite sides of each other for smooth flow of the refrigerant.
- each cartridge 120 may include two cooling plates 122 spaced apart from each other by a predetermined distance, and refrigerant may be introduced into the spaced spaces of the cooling plates 122.
- the refrigerant flowing between the spaced spaces of the cooling plate 122 of the cartridge 120 may be discharged to the outside through the outlet duct.
- the battery pack according to the present invention may further include an upper housing 500, as shown in FIGS. 7 and 8.
- the upper housing 500 may be coupled to the upper open end of the lower housing 200 to seal the upper open end.
- the upper housing 500 may be made of a plastic material in order to secure electrical insulation and secure lightweight and formability.
- the upper housing 500 may be fastened and fixed to the lower housing 200 using the bolt 310 of the lower end plate. That is, the upper housing 500 may have a coupling hole H5 formed at a position corresponding to the bolt 310 of the lower end plate, and the bolt 310 of the lower end plate penetrates the coupling hole H5. To protrude to the upper portion of the upper housing 500.
- the upper housing 500 may be fastened and fixed to the bolt 310 by coupling the fastening member such as the nut N to the upper end of the protruding bolt 310. Since the bolt 310 is mounted on the lower end plate 300 fixed to the lower portion of the lower housing 200, when the upper housing 500 is fastened and fixed to the bolt 310, the upper housing 200 is connected to the lower housing 200. 500 may be said to be fastened and fixed.
- the bolt 310 of the lower end plate is used to couple and fix the lower housing 200 and the upper housing 500, the lower housing 200 and the upper housing 500 are fastened. There is no need to provide a fastening member separately. Therefore, according to this aspect of the present invention, the processability and productivity of the battery pack can be improved and the structure can be simplified. Furthermore, in the present invention, since the lower end plate 300 is located below the lower housing 200, and the upper housing 500 is coupled to the bolt 310 of the lower end plate, the lower housing 200 and Fixing force between the upper housing 500 may be further improved.
- a sealing member may be included between the upper housing 500 and the lower housing 200.
- a sealing member such as rubber or silicon may be provided in a ring shape along an edge portion where the upper housing 500 and the lower housing 200 contact each other.
- the sealing member improves the sealing property between the upper housing 500 and the lower housing 200, and water, dust, and the like are connected between the upper housing 500 and the lower housing 200. It can prevent foreign matter from penetrating.
- the generated gas when the gas is generated in the secondary battery 110, the generated gas can be discharged through a desired path, and prevented from being sucked by the user is leaked by an unexpected path. Can be.
- the battery pack according to the present invention may further include other various components in addition to the above configuration.
- the battery pack according to the present invention further includes a bus bar for transferring charge / discharge power of the cell assembly 100, a cable for transmitting electrical signals, a power supply terminal for connecting with an external charge / discharge device, and the like. can do.
- the battery pack according to the present invention can be applied to an automobile such as an electric vehicle or a hybrid vehicle. That is, the vehicle according to the present invention may include a battery pack according to the present invention.
- a battery pack according to the present invention in particular, in the case of a vehicle that obtains driving power from a battery such as an electric vehicle, a medium-large battery pack may be used. In this case, securing rigidity and fixing force of the battery pack, improving energy density, weight reduction, and miniaturization may be very important factors. have. Therefore, when the battery pack according to the present invention is applied to such a vehicle, these various elements can be improved.
- FIG. 9 is a flowchart schematically illustrating a method of manufacturing a battery pack according to an embodiment of the present invention.
- the lower end plate 300 is disposed below the lower housing 200 (S110), and the lower cover 400 is disposed below the lower end plate 300.
- Position (S120), the lower cover 400 and the step of fixing the lower housing 200 (S130) and the secondary battery 110 and the cartridge 120 in the inner space of the lower housing 200 laminated Step S140 is included.
- the lower end plate 300 which is formed of a plate-like metal material, may be disposed in a surface contact form at a lower portion of the lower housing 200 having an empty space therein and having an open upper portion.
- the lower cover 400 may be positioned below the lower end plate 300 to cover the lower end plate 300.
- the lower cover 400 and the lower housing 200 may be fixed to each other at least on one side.
- the secondary battery 110 and the cartridge 120 for accommodating the secondary battery 110 in a form of surrounding the outer circumferential portion of the secondary battery 110 are stacked.
- the step S130 may be performed by a laser welding method.
- the lower end plate 300 includes one or more bolts 310 formed to protrude upward, and the lower housing 200 has one or more through-holes H2 formed therein.
- the bolt 310 of the lower end plate may pass through the through hole H2 of the lower housing 200.
- At least one insertion hole H1 may be formed in the cartridge 120.
- the bolt 310 of the lower end plate may be inserted into the insertion hole H1 of the cartridge 120.
- the cell assembly 100 may further include the step of mounting the upper end plate 600 made of a plate-shaped metal material on the top.
- the bolt 310 of the lower end plate may be configured to pass through the upper end plate 600.
- the method may further include mounting the electric plate 700 on which the at least one electronic component of the BMS, the current sensor, the relay, and the fuse is mounted on the stack of the cell assembly 100.
- the bolt 310 of the lower end plate may be configured to pass through the electric plate 700.
- the electrical plate 700 may be disposed on the upper end of the upper end plate 600.
- step S140 coupling the upper housing 500 to the upper open end of the lower housing 200 in a state where the bolt 310 of the lower end plate is penetrated and protrudes to the upper portion of the upper housing 500.
- the method may further include coupling a fastening member such as a nut to the bolt 310 of the lower end plate.
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Abstract
Description
Claims (16)
- 복수의 이차 전지, 및 상호 적층 가능하며 상기 이차 전지의 외주부를 외측에서 감싸 상기 이차 전지를 수용하는 복수의 카트리지를 구비하는 셀 어셈블리;내부에 빈 공간을 구비하여 상기 셀 어셈블리를 내부 공간에 수납하고, 상부가 개방된 형태로 구성된 로워 하우징;판상의 금속 재질로 구성되며, 상기 로워 하우징의 하면에 면접촉한 형태로 배치된 하부 엔드 플레이트; 및상기 하부 엔드 플레이트의 하부에 위치하여 상기 하부 엔드 플레이트를 커버하며, 상기 로워 하우징과 결합 고정된 로워 커버를 포함하는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 로워 커버는, 상기 로워 하우징과 레이저 용접에 의해 결합 고정된 것을 특징으로 하는 배터리 팩.
- 제2항에 있어서,상기 로워 커버는, 상기 로워 하우징과 동일한 플라스틱 재질로 구성된 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 로워 커버는, 상기 하부 엔드 플레이트의 테두리를 따라 상기 테두리 외측에서 상기 로워 하우징과 결합 고정된 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 하부 엔드 플레이트는 중앙 부분에 하나 이상의 개구부가 형성되고,상기 로워 커버는 상기 개구부를 통해 상기 로워 하우징과 결합 고정된 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 로워 하우징과 상기 로워 커버는, 상호 대응되는 형태로 요철부가 형성된 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 하부 엔드 플레이트는 상부 방향으로 돌출되게 형성된 볼트를 하나 이상 구비하고,상기 로워 하우징은 상기 볼트가 관통되도록 관통홀이 하나 이상 형성된 것을 특징으로 하는 배터리 팩.
- 제7항에 있어서,상기 셀 어셈블리는 삽입홀이 하나 이상 형성되고,상기 볼트는 상기 삽입홀에 삽입된 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 셀 어셈블리는, 상기 이차 전지 및 상기 카트리지가 상하 방향으로 적층된 형태로 구성되고,상기 셀 어셈블리에서 최하층에 위치하는 카트리지는, 상기 로워 하우징의 내부 공간 하부면에 접촉하여 안착되는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,판상의 금속 재질로 구성되며, 상기 셀 어셈블리의 상부에 구비되어 상기 셀 어셈블리의 상부를 커버하는 상부 엔드 플레이트를 더 포함하는 것을 특징으로 하는 배터리 팩.
- 제1항에 있어서,상기 로워 하우징의 상부 개방단에 결합되어, 상부 개방단을 밀폐시키는 어퍼 하우징을 더 포함하는 것을 특징으로 하는 배터리 팩.
- 제1항 내지 제11항 중 어느 한 항에 따른 배터리 팩을 포함하는 자동차.
- 내부에 빈 공간을 구비하며 상부가 개방된 형태로 구성된 로워 하우징의 하부에, 판상의 금속 재질로 구성된 하부 엔드 플레이트를 면접촉한 형태로 배치시키는 단계;상기 하부 엔드 플레이트를 커버하도록 상기 하부 엔드 플레이트의 하부에 로워 커버를 위치시키는 단계;상기 로워 커버와 상기 로워 하우징을 결합 고정시키는 단계; 및상기 로워 하우징의 내부 공간에서, 이차 전지와 상기 이차 전지의 외주부를 외측에서 감싸는 형태로 이차 전지를 수용하는 카트리지를 적층시키는 단계를 포함하는 것을 특징으로 하는 배터리 팩 제조 방법.
- 제13항에 있어서,상기 결합 고정 단계는, 레이저 용접 방식에 의해 수행되는 것을 특징으로 하는 배터리 팩 제조 방법.
- 제13항에 있어서,상기 하부 엔드 플레이트는 상부 방향으로 돌출되게 형성된 볼트를 하나 이상 구비하고, 상기 로워 하우징은 관통홀이 하나 이상 형성되어,상기 하부 엔드 플레이트의 배치 단계는, 상기 로워 하우징의 관통홀에 상기 하부 엔드 플레이트의 볼트가 관통되도록 수행되는 것을 특징으로 하는 배터리 팩 제조 방법.
- 제15항에 있어서,상기 카트리지에는 삽입홀이 하나 이상 형성되어, 상기 이차 전지와 상기 카트리지의 적층 단계는, 상기 하부 엔드 플레이트의 볼트가 상기 카트리지의 삽입홀에 삽입되도록 수행되는 것을 특징으로 하는 배터리 팩 제조 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16786776.1A EP3255701B1 (en) | 2015-04-30 | 2016-04-28 | Battery pack and manufacturing method therefor |
US15/554,809 US10297801B2 (en) | 2015-04-30 | 2016-04-28 | Battery pack and manufacturing method therefor |
JP2017546653A JP6460360B2 (ja) | 2015-04-30 | 2016-04-28 | バッテリーパック及びその製造方法 |
CN201680018477.XA CN107534107B (zh) | 2015-04-30 | 2016-04-28 | 电池组及其制造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020150061977A KR101943489B1 (ko) | 2015-04-30 | 2015-04-30 | 배터리 팩 및 그 제조 방법 |
KR10-2015-0061977 | 2015-04-30 |
Publications (1)
Publication Number | Publication Date |
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WO2016175590A1 true WO2016175590A1 (ko) | 2016-11-03 |
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PCT/KR2016/004481 WO2016175590A1 (ko) | 2015-04-30 | 2016-04-28 | 배터리 팩 및 그 제조 방법 |
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US (1) | US10297801B2 (ko) |
EP (1) | EP3255701B1 (ko) |
JP (1) | JP6460360B2 (ko) |
KR (1) | KR101943489B1 (ko) |
CN (1) | CN107534107B (ko) |
WO (1) | WO2016175590A1 (ko) |
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Also Published As
Publication number | Publication date |
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KR20160129596A (ko) | 2016-11-09 |
US20180040863A1 (en) | 2018-02-08 |
EP3255701A1 (en) | 2017-12-13 |
CN107534107A (zh) | 2018-01-02 |
KR101943489B1 (ko) | 2019-01-29 |
US10297801B2 (en) | 2019-05-21 |
JP2018507523A (ja) | 2018-03-15 |
JP6460360B2 (ja) | 2019-01-30 |
CN107534107B (zh) | 2020-11-06 |
EP3255701A4 (en) | 2018-01-17 |
EP3255701B1 (en) | 2018-07-11 |
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