WO2024101903A1 - 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 - Google Patents
배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 Download PDFInfo
- Publication number
- WO2024101903A1 WO2024101903A1 PCT/KR2023/017920 KR2023017920W WO2024101903A1 WO 2024101903 A1 WO2024101903 A1 WO 2024101903A1 KR 2023017920 W KR2023017920 W KR 2023017920W WO 2024101903 A1 WO2024101903 A1 WO 2024101903A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery
- insulator
- electrode assembly
- side portion
- housing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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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
- H01M50/50—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
- 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
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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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
- H01M10/0431—Cells with wound or folded 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
- H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
-
- 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
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/147—Lids or covers
-
- 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
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/531—Electrode connections inside a battery casing
- H01M50/538—Connection of several leads or tabs of wound or folded electrode stacks
-
- 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
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Definitions
- the present invention relates to batteries, battery packs containing the same, and automobiles.
- Secondary batteries which are easy to apply depending on the product group and have electrical characteristics such as high energy density, are used not only in portable devices but also in electric vehicles (EV, Electric Vehicle) and hybrid vehicles (HEV, Hybrid Electric Vehicle) that are driven by an electrical drive source. It is universally applied.
- EV Electric Vehicle
- HEV Hybrid Electric Vehicle
- These secondary batteries not only have the primary advantage of being able to dramatically reduce the use of fossil fuels, but also have the advantage of not generating any by-products due to energy use, so they are attracting attention as a new energy source for eco-friendliness and improving energy efficiency.
- Types of secondary batteries currently widely used include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, and nickel zinc batteries.
- the operating voltage of these unit secondary battery cells is approximately 2.5V to 4.5V.
- a battery pack is formed by connecting a plurality of battery cells in series. Additionally, a battery pack may be constructed by connecting multiple battery cells in parallel depending on the charge/discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack and the type of electrical connection can be set in various ways depending on at least one of the required output voltage and charge/discharge capacity.
- cylindrical, prismatic, and pouch-type battery cells are known as types of secondary battery cells.
- an insulating separator is interposed between the anode and the cathode, and this is wound to form a jelly roll-shaped electrode assembly, which is inserted into the housing together with the electrolyte to form a battery.
- the housing has polarity by being connected to the cathode or anode (usually the cathode), insulation is also required between the housing and the jelly roll-shaped electrode assembly.
- cylindrical battery cells are recently applied to electric vehicles, the form factor of cylindrical battery cells is increasing. That is, the diameter and height of cylindrical battery cells are increasing compared to conventional cylindrical battery cells with form factors such as 18650 and 21700. Increasing form factor results in increased energy density, increased safety against thermal runaway, and improved cooling efficiency. And, in the case of cylindrical battery cells with increased form factors, insulation between the housing and the jelly roll-shaped electrode assembly is becoming more important.
- an insulator configured to prevent unnecessary electrical contact between the electrode assembly and the housing.
- the maximum size of the insulator can be configured to correspond to the inner diameter of the housing.
- the process of inserting the insulator into the housing may not be smooth.
- the insulator when the insulator is inserted into the housing, its shape may be deformed, and damaged insulator parts may cause problems in which the insulating function cannot be properly performed.
- the present invention was created in consideration of the above-mentioned problems, and its purpose is to provide a battery with a structure that can reliably prevent unnecessary electrical contact between the electrode assembly and the housing.
- one object of the present invention is to enable the insulator to be easily inserted into the housing in the process of inserting the insulator into the housing.
- the purpose of the present invention is to prevent the insulator from being damaged and unnecessary electrical contact between the electrode assembly and the housing occurring through the damaged portion during the process of inserting the insulator into the housing.
- a battery according to an embodiment of the present invention for solving the above-described problems includes an electrode assembly; a housing having an open portion formed on one side and a closure portion formed on an opposite side of the open portion, and configured to receive the electrode assembly through the open portion; and a cover portion interposed between the closing portion and the electrode assembly and a side portion interposed between the outer peripheral surface of the electrode assembly and the side wall of the housing, wherein the side portion includes a stress relief portion formed at a predetermined depth from the end.
- insulator Includes.
- the stress relief portion may be provided in plural numbers along the circumference of the side portion.
- the stress relief portion may have a structure notched to a predetermined depth from an end of the side portion.
- the end perimeter of the side portion may be discontinuous.
- the stress relief portion may have a structure that is cut to a predetermined depth from an end of the side portion.
- the end circumference of the side portion may be continuous.
- the insulator may have a maximum diameter larger than the inner diameter of the housing when not accommodated in the housing.
- the insulator may have a maximum diameter at the end of the side portion.
- the insulator may be formed to have a larger diameter at an end of the side portion than a diameter at a connection portion of the cover portion and the side portion.
- the insulator may be configured to have a larger diameter as it moves from the connection portion between the side portion and the cover portion to the end of the side portion.
- the electrode assembly may include a first uncoated portion extending in a direction toward the closed portion.
- the insulator may be configured so that the first uncoated portion is not exposed through the stress relief portion formed on the side portion.
- the battery is electrically coupled to the electrode assembly and may include a first current collector interposed between the electrode assembly and the closure portion.
- the cover part may be interposed between the current collector and the closure part.
- the battery may include a battery terminal that penetrates the closure and is coupled to the first current collector.
- the cover part may have an insulator hole formed at a position corresponding to the battery terminal and the winding center hole of the electrode assembly.
- unnecessary electrical contact between the electrode assembly and the housing can be reliably prevented.
- the insulator in the process of inserting the insulator into the housing, the insulator can be easily inserted into the housing.
- the insulator in the process of inserting the insulator into the housing, it is possible to prevent the insulator from being damaged and unnecessary electrical contact between the electrode assembly and the housing occurring through the damaged portion.
- FIG. 1 is an overall perspective view showing an exemplary form of a battery according to the present invention.
- FIG. 2 is a diagram showing the internal structure of the upper portion of the battery shown in FIG. 1.
- Figure 3 is a partial enlarged view of Figure 2.
- FIGS. 4 and 5 are diagrams showing an insulator according to an embodiment of the present invention.
- Figure 6 is a diagram for explaining problems when applying an insulator without a stress relief part, unlike the insulator of the present invention.
- FIG. 7 is a diagram illustrating an insulator according to an embodiment of the present invention, and is a diagram illustrating an insulator having a structure in which the shape of the stress relief portion is different compared to the insulator shown in FIGS. 4 and 5.
- Figures 8 and 9 are diagrams showing a cross section of the insulator of the present invention, and are diagrams for explaining changes in the diameter of the insulator.
- Figure 10 is a diagram for explaining the positional relationship between the stress relief portion formed in the insulator of the present invention and the uncoated portion of the electrode assembly.
- FIG. 11 is a diagram showing an exemplary form of a current collector (first current collector) applied to the present invention.
- FIG. 12 is a diagram showing the internal structure of the lower portion of the battery shown in FIG. 1.
- Figure 13 is a diagram showing a battery pack according to an embodiment of the present invention.
- Figure 14 is a diagram showing a car according to an embodiment of the present invention.
- FIG. 1 is an overall perspective view showing an exemplary form of a battery according to the present invention
- FIG. 2 is a view showing the internal structure of the upper portion of the battery shown in FIG. 1
- FIG. 3 is a partial enlarged view of FIG. 2.
- 4 and 5 are diagrams showing an insulator according to an embodiment of the present invention.
- the battery 1 may include an electrode assembly 10, a housing 20, and an insulator 30.
- the battery 1 of the present invention may be, for example, a cylindrical battery.
- the electrode assembly 10 may include a first electrode having a first polarity, a second electrode having a second polarity opposite to the first polarity, and a separator interposed between the first electrode and the second electrode.
- the electrode assembly 10 may have a form in which a laminate including a first electrode, a second electrode, and a separator is wound in one direction. That is, the electrode assembly 10 may be, for example, a jelly roll type electrode assembly.
- a winding center hole 10a may be formed in the area that is the center of the winding.
- the first electrode may include a first uncoated region 11, which is an area where the electrode active material is not applied.
- the first uncoated portion 11 may extend from one end of the first electrode along the winding direction of the electrode assembly 10. As a result, the first uncoated portion 11 can be provided on the first surface substantially perpendicular to the outer peripheral surface of the electrode assembly 10.
- the second electrode may include a second uncoated region 12, which is an area where the electrode active material is not applied (see FIG. 12).
- the second uncoated portion 12 may extend from one end of the second electrode along the winding direction of the electrode assembly 10.
- the second uncoated portion 12 can be provided on a second surface (a surface located on the opposite side from the first surface) that is approximately perpendicular to the outer peripheral surface of the electrode assembly 10.
- a separator may be located on the outermost side of the electrode assembly 10.
- a separator may be located on the inner wall of the winding center hole 10a.
- the first uncoated region 11 and/or the second uncoated region 12 may include a plurality of segmented pieces formed by dividing them along the winding direction of the electrode assembly 10. there is. These segment pieces can be formed by notching the first uncoated area 11 and/or the second uncoated area 12 to a predetermined depth. The plurality of segment pieces may be bent along approximately the radial direction of the electrode assembly 10. In this case, some of the segments adjacent to each other along the radial direction may overlap each other.
- the battery housing 20 may have an open portion formed on one side and a closed portion formed on an opposite side of the open portion.
- the battery housing 20 may be configured to receive the electrode assembly 10 through an opening.
- the battery housing 20 may include conductive metal.
- the battery housing 20 may have a substantially hollow cylindrical shape.
- the battery housing 20 may be electrically connected to, for example, a second electrode of the electrode assembly 10 .
- the insulator 30 may include a cover part 31 and a side part 32.
- the insulator 30 can prevent unnecessary electrical connection between the electrode assembly 10 and the battery housing 20.
- the insulator 30 may include a material having insulating properties.
- the cover part 31 may be interposed between the closing part of the battery housing 20 and the electrode assembly 10.
- the cover portion 31 may be interposed between the closed portion of the battery housing 20 and the first uncoated portion 11 of the electrode assembly 10.
- the cover portion 31 may have an insulator hole 31a formed at approximately the center.
- the insulator hole 31a may be provided at a position corresponding to the winding center hole 10a of the electrode assembly 10.
- the insulator hole 31a is provided with the battery terminal 50 and the current collector (first current collector) 40, which will be described later, in the battery 1 of the present invention. ) can function as a passage for binding between
- the cover part 31 may be provided with an electrolyte hole 31b.
- the electrolyte hole 31b may function as a circulation passage to ensure smooth circulation of the electrolyte contained within the battery housing 20.
- the side portion 32 may be interposed between the outer peripheral surface of the electrode assembly 10 and the side wall of the battery housing 20.
- the side portion 32 may extend from around the edge of the cover portion 31.
- the side portion 32 may extend in a direction toward the opening of the battery housing 20.
- the cover part 31 may have a substantially flat shape, and the side part 32 may extend along a direction approximately perpendicular to the plane forming the cover part 31.
- the side portion 32 may include a stress relief portion 32a formed at a predetermined depth from its end.
- a stress relief portion 32a formed at a predetermined depth from its end.
- a plurality of stress relieving parts 32a may be provided along the circumference of the side part 32.
- a plurality of stress relief portions 32a may be positioned along the circumference of the side portion 32 and spaced apart from each other.
- the stress relief portion 32a may have a structure notched to a predetermined depth from the end of the side portion 32. That is, the stress relieving part 32a may have a groove shape indented to a predetermined depth from the end of the side part 32.
- the circumference of the end of the side portion 32 may be discontinuous in the area where the stress relieving portion 32a is formed.
- the shape of the area removed by the notching may be approximately trapezoidal as shown in the drawings of the present invention.
- the shape of the area removed by notching is not limited to this, and notching may be performed in various shapes that can make the circumference of the end of the side portion 32 discontinuous. .
- Figure 6 is a diagram for explaining problems when applying an insulator without a stress relief part, unlike the insulator of the present invention.
- the insulator 30 without the stress relief portion 32a such as the insulator 30 of the present invention
- the insulator 30 accumulates in the side portion 32.
- a region D in which the side portion 32 is crumpled may be generated due to the stress. If the insulator 30 is deformed and/or damaged in this way, the quality of the manufactured battery 1 may deteriorate and/or safety problems may occur as described above.
- FIG. 7 an insulator 30 having a different form from the insulator 30 of the present invention shown in FIGS. 4 and 5 will be described.
- FIG. 7 is a diagram illustrating an insulator according to an embodiment of the present invention, and is a diagram illustrating an insulator having a structure in which the shape of the stress relief portion is different compared to the insulator shown in FIGS. 4 and 5.
- the stress relief portion 32a formed in the insulator 30 of the present invention may have a structure that is cut to a predetermined depth from the end of the side portion 32.
- the stress relief portion 32a shown in FIG. 7 is not provided in the form of removing a portion of the side portion 32 like the stress relief portion 32a shown in FIGS. 4 and 5, but is provided as a side portion ( 32) can be formed by cutting a portion of the area.
- the stress relief portion 32a is formed by forming a cut line at a predetermined depth from the end of the side portion 32, stress is applied to the side portion 32 during the process of inserting the insulator 30 into the battery housing 20.
- the stress can be relieved through natural shape deformation in the incised area.
- the circumference of the end of the side portion 32 may be continuous in the area where the stress relieving portion 32a is formed.
- continuous does not mean that the side portion 32 has a smooth shape without cracks along its edge, but rather means that the side portion 32 exists continuously without any removed areas along its edge. It means.
- Figures 8 and 9 are diagrams showing a cross section of the insulator of the present invention, and are diagrams for explaining changes in the diameter of the insulator.
- the maximum diameter (R2) of the insulator 30 when not accommodated in the battery housing 20 is formed to be larger than the inner diameter of the battery housing 20. You can. In this case, when the maximum diameter (R2) of the insulator 30 is configured to be larger than the inner diameter of the battery housing 20, the insulator 30 is inserted into the battery housing 20 when the insulator 30 is inserted into the battery housing 20. It can be well fixed without moving within it.
- the maximum diameter (R2) of the insulator 30 when the maximum diameter (R2) of the insulator 30 is formed to be larger than the inner diameter of the battery housing 20, stress may be applied to the insulator 30 when inserting the insulator 30 into the battery housing 20. This stress can be relieved through the stress relief portion 32a as described above.
- the insulator 30 of the present invention may be configured to have a maximum diameter (R2) at the end of the side portion 32.
- the insulator 30 may be configured to have a maximum diameter at the end of the side portion 32.
- the insulator 30 may have a larger diameter at the end of the side portion R2 than the diameter R1 at the connection portion between the cover portion 31 and the side portion 32.
- the side portion 32 may be configured to have a diameter (R1) that is approximately the same as the cover portion 31 in an area adjacent to the cover portion 31.
- the side portion 32 may be configured to have a larger diameter starting from a point that is a certain distance away from the cover portion 31 toward the end.
- the insulator 30 may be configured to have a larger diameter as it moves from the connection portion between the side portion 32 and the cover portion 31 to the end of the side portion 32.
- Figure 10 is a diagram for explaining the positional relationship between the stress relief portion formed in the insulator of the present invention and the uncoated portion of the electrode assembly.
- the electrode assembly 10 of the present invention may be provided with a first uncoated portion 11, and this first uncoated portion 11 is oriented in a direction toward the closed portion of the housing 20. can be extended to At this time, the insulator 30 may be configured so that the first uncoated portion 11 is not exposed through the stress relief portion 32a formed on the side portion 32.
- the first uncoated portion 11 is not exposed due to the stress relief portion 32a of the insulator 30. It may not be possible. That is, the depth of notching and/or cutting for forming the stress relief portion 32a may be determined at a level where the first uncoated portion 11 is not exposed through the stress relief portion 32a.
- Figure 11 is a diagram showing an exemplary form of a current collector applied to the present invention.
- the battery 1 may include a current collector 40 and/or a battery terminal 50 and/or a first gasket G1.
- the current collector 40 may be configured to electrically connect the battery terminal 50 and the electrode assembly 10.
- the current collector 40 may be electrically coupled to the electrode assembly 10.
- the current collector 40 may be electrically connected to the first electrode of the electrode assembly 10.
- the current collector 40 may be combined with the first uncoated portion 11 of the electrode assembly 10.
- the insulator 30 of the present invention may be interposed between the closed portion of the housing 20 and the current collector 40.
- the cover part 31 of the insulator 30 may be interposed between the closed part of the housing 20 and the current collector 40.
- the current collector 40 may be disposed on the first side of the electrode assembly 10.
- the current collector 40 may include a first coupling part 41 and a second coupling part 42.
- the first coupling portion 41 may be configured to be electrically coupled to the electrode assembly 10.
- the first coupling portion 41 may be coupled to the first uncoated portion 11 of the electrode assembly 10.
- the first coupling portion 41 may be coupled to a coupling surface formed by bending the first uncoated portion 11. At least a portion of the first coupling portion 41 may be coupled to the first uncoated portion 11 in an area where the number of overlapping layers of segment pieces of the first uncoated portion 11 is maximized.
- the second coupling portion 42 may be electrically coupled to the battery terminal 50.
- the second coupling portion 42 may be electrically coupled to the first portion 51 of the battery terminal 50.
- the second coupling portion 42 is connected to the first coupling portion of the battery terminal 50 by a welding tool inserted through the winding center hole 10a of the electrode assembly 10 or a laser irradiated through the former center hole 10a. It can be welded with part 51.
- the current collector 40 of the present invention may have a structure in which the first coupling portion 41 and the second coupling portion 42 are spaced apart from each other along the radial direction.
- the current collector 40 may include a rim portion 43 located on the outer periphery of the first coupling portion 41 and the second coupling portion 42.
- the current collector 40 may include a connecting portion 44 configured to connect the rim portion 43 and the second coupling portion 42. In this way, when the first coupling portion 41 and the second coupling portion 42 are not directly connected to each other but indirectly connected through the rim portion 43, the impact applied to the battery 1 can be distributed.
- the battery terminal 50 may be configured to be electrically connected to the electrode assembly 10 through a closed portion provided on the opposite side of the open portion of the battery housing 20.
- the battery terminal 50 may be electrically connected to the first electrode of the electrode assembly 10.
- the battery terminal 50 may function as the first terminal of the battery 1.
- the battery terminal 50 and the battery housing 20 may have opposite polarities. In this case, in order to prevent contact between these parts and ensure the airtightness of the battery housing 20, the battery housing 20 and the battery terminal 50 A first gasket (G1) may be provided between them.
- the battery terminal 50 may include a first part 51 and a second part 52.
- the first part 51 may be provided at a position corresponding to the winding center hole 10a of the electrode assembly 10.
- the second part 52 may be exposed to the outside of the battery housing 20 .
- the second portion 52 may be located approximately at the center of the closed portion of the battery housing 20.
- the battery terminal 50 may include a third part 53 provided outside the first part 51.
- the third portion 53 may be riveted toward the closed portion of the battery housing 20 to secure the battery terminal 50 to the battery housing 20.
- the battery terminal 50 penetrates the closed portion of the battery housing 20 and the current collector 40 ) can be combined with.
- the cover portion 31 of the insulator 30 may include an insulator hole 31a formed at a position corresponding to the battery terminal 50 and the winding center hole 10a of the electrode assembly 10.
- FIG. 12 is a diagram showing the internal structure of the lower portion of the battery shown in FIG. 1.
- the battery 1 may include a current collector (second current collector) 60.
- the current collector 60 may be configured to electrically connect the electrode assembly 10 and the battery housing 20.
- the current collector 60 may be electrically connected to the second electrode of the electrode assembly 10.
- the current collector 60 may be electrically coupled to the second uncoated portion 12 provided on the second surface of the electrode assembly 10.
- the current collector 60 may be electrically coupled to the inner surface of the battery housing 20.
- the current collector 60 may be electrically coupled to the beading portion 21 formed by press-fitting the outer peripheral surface of the battery housing 20.
- the battery 1 may include a cap 70.
- the cap 70 may be configured to close the opening of the battery housing 20.
- the cap 70 may be fixed by a crimping portion 22 that extends and bends from the beading portion 21 of the battery housing 20 and wraps around the edge of the cap 70.
- a second gasket G2 may be interposed between the cap 70 and the inner surface of the battery housing 20.
- the cap 70 may include a venting portion 71 that is weak compared to the remaining area.
- the venting portion 71 may be configured to partially reduce the thickness of the cap 70.
- the venting portion 71 may be configured to break when the internal pressure of the battery 1 increases and exceeds a predetermined pressure.
- Figure 13 is a diagram showing a battery pack according to an embodiment of the present invention.
- the battery pack 3 includes a battery 1 according to an embodiment of the present invention and a pack housing 2 that accommodates the battery 1. It can be included. There may be a plurality of batteries 1, and the plurality of batteries 1 may be electrically connected to each other.
- the battery 1 of the present invention may be configured so that the battery terminal 50 and the closed portion of the battery housing 20 can function as a first electrode terminal and a second electrode terminal, respectively. Therefore, when arranging a plurality of batteries 1 in the pack housing 2, the battery terminals 50 of all batteries 1 are arranged to face upward, so that electrical connection can be made at the top of the battery 1. .
- Figure 14 is a diagram showing a car according to an embodiment of the present invention.
- a vehicle 5 may include a battery pack 3 according to an embodiment of the present invention.
- the vehicle 5 may be configured to operate by receiving power from the battery pack 3.
- the vehicle 5 may be, for example, an electric vehicle or a hybrid vehicle.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
Description
Claims (15)
- 전극 조립체;일 측에 형성된 개방부 및 상기 개방부의 반대편에 형성되는 폐쇄부를 구비하며, 상기 개방부를 통해 상기 전극 조립체를 수용하도록 구성되는 배터리 하우징; 및상기 폐쇄부와 상기 전극 조립체 사이에 개재되는 커버부 및 상기 전극 조립체의 외주면과 상기 배터리 하우징의 측벽 사이에 개재되는 사이드부를 포함하며, 상기 사이드부는 그 단부로부터 소정 깊이로 형성되는 응력 완화부를 구비하는 인슐레이터;를 포함하는 배터리.
- 제1항에 있어서,상기 응력 완화부는,상기 사이드부의 둘레를 따라 복수개 구비되는 것을 특징으로 하는 배터리.
- 제1항에 있어서,상기 응력 완화부는,상기 사이드부의 단부로부터 소정 깊이 노칭된 구조를 갖는 것을 특징으로 하는 배터리.
- 제3항에 있어서,상기 사이드부의 단부 둘레는 불연속적인 것을 특징으로 하는 배터리.
- 제1항에 있어서,상기 응력 완화부는,상기 사이드부의 단부로부터 소정 깊이 절개된 구조를 갖는 것을 특징으로 하는 배터리.
- 제5항에 있어서,상기 사이드부의 단부 둘레는 연속적인 것을 특징으로 하는 배터리.
- 제1항에 있어서,상기 인슐레이터는,상기 배터리 하우징 내에 수용되지 않은 상태에서의 그 최대 직경이 상기 배터리 하우징의 내경보다 더 큰 것을 특징으로 하는 배터리.
- 제7항에 있어서,상기 인슐레이터는,상기 사이드부의 단부에서 최대 직경을 갖는 것을 특징으로 하는 배터리.
- 제8항에 있어서,상기 인슐레이터는,상기 커버부와 상기 사이드부의 연결 부위에서의 직경보다 상기 사이드부의 단부에서의 직경이 더 큰 것을 특징으로 하는 배터리.
- 제8항에 있어서,상기 인슐레이터는,상기 사이드부와 상기 커버부와의 연결부위로부터 상기 사이드부의 단부로 갈수록 더 큰 직경을 갖도록 구성되는 것을 특징으로 하는 배터리.
- 제1항에 있어서,상기 전극 조립체는 상기 폐쇄부를 향하는 방향으로 연장되는 제1 무지부를 구비하며,상기 인슐레이터는 상기 제1 무지부가 상기 사이드부에 형성되는 상기 응력 완화부를 통해 노출되지 않도록 구성되는 것을 특징으로 하는 배터리.
- 제1항에 있어서,상기 배터리는 전극 조립체와 전기적으로 결합되며 상기 전극 조립체와 상기 폐쇄부 사이에 개재되는 제1 집전체를 포함하며,상기 커버부는 집전체와 상기 폐쇄부 사이에 개재되는 것을 특징으로 하는 배터리.
- 제12항에 있어서,상기 배터리는 상기 폐쇄부를 관통하여 상기 제1 집전체와 결합되는 배터리 단자를 포함하며,상기 커버부는 상기 배터리 단자 및 상기 전극 조립체의 권취 중심 홀과 대응되는 위치에 형성되는 인슐레이터 홀을 구비하는 것을 특징으로 하는 배터리.
- 제1항 내지 제13항 중 어느 한 항에 따른 배터리를 포함하는 배터리 팩.
- 제14항에 따른 배터리 팩을 포함하는 자동차.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2025506187A JP2025525228A (ja) | 2022-11-08 | 2023-11-08 | バッテリー、それを含むバッテリーパック及び自動車 |
| US19/100,730 US20260038995A1 (en) | 2022-11-08 | 2023-11-08 | Battery, and Battery Pack and Vehicle Including the Same |
| EP23889161.8A EP4572000A4 (en) | 2022-11-08 | 2023-11-08 | BATTERY, BATTERY BLOCK, AND VEHICLE CONTAINING IT |
| CN202380016794.8A CN118541869A (zh) | 2022-11-08 | 2023-11-08 | 电池及电池组和包括该电池组的车辆 |
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| KR10-2022-0148247 | 2022-11-08 | ||
| KR20220148247 | 2022-11-08 |
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| WO2024101903A1 true WO2024101903A1 (ko) | 2024-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/KR2023/017920 Ceased WO2024101903A1 (ko) | 2022-11-08 | 2023-11-08 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20260038995A1 (ko) |
| EP (1) | EP4572000A4 (ko) |
| JP (1) | JP2025525228A (ko) |
| KR (1) | KR20240067043A (ko) |
| CN (1) | CN118541869A (ko) |
| WO (1) | WO2024101903A1 (ko) |
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| WO2026010362A1 (ko) * | 2024-07-05 | 2026-01-08 | 주식회사 엘지에너지솔루션 | 배터리, 배터리 팩 및 이를 포함하는 자동차 |
Citations (6)
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| JPH05283099A (ja) * | 1992-04-02 | 1993-10-29 | Hitachi Maxell Ltd | アルカリ蓄電池 |
| KR100601521B1 (ko) * | 2005-03-09 | 2006-07-19 | 삼성에스디아이 주식회사 | 리튬 이차전지 |
| KR20090062542A (ko) * | 2007-12-13 | 2009-06-17 | 삼성에스디아이 주식회사 | 이차 전지용 절연 케이스 및 이를 구비하는 이차 전지 |
| CN114284570A (zh) * | 2021-12-28 | 2022-04-05 | 宁德新能源科技有限公司 | 电芯、电池及用电设备 |
| KR20220105147A (ko) * | 2021-01-19 | 2022-07-26 | 주식회사 엘지에너지솔루션 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
| KR20220148247A (ko) | 2020-03-04 | 2022-11-04 | 도쿄엘렉트론가부시키가이샤 | 기판 처리 장치 및 기판 처리 방법 |
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| JPH0421249Y2 (ko) * | 1987-02-17 | 1992-05-14 | ||
| JP3742350B2 (ja) * | 2002-02-28 | 2006-02-01 | 株式会社東芝 | 非水電解質二次電池 |
| JP5076314B2 (ja) * | 2005-12-20 | 2012-11-21 | パナソニック株式会社 | 電池 |
| KR101574082B1 (ko) * | 2008-12-12 | 2015-12-04 | 삼성에스디아이 주식회사 | 이차 전지 |
| FR3075477B1 (fr) * | 2017-12-14 | 2021-07-30 | Commissariat Energie Atomique | Traversee formant borne pour accumulateur electrochimique metal-ion, accumulateur associe |
| CN112310561A (zh) * | 2020-04-09 | 2021-02-02 | 宁德时代新能源科技股份有限公司 | 电池、电池组、用电设备和电池的制造方法 |
| SE544360C2 (en) * | 2021-04-22 | 2022-04-19 | Northvolt Ab | Cylindrical secondary cell |
-
2023
- 2023-11-08 EP EP23889161.8A patent/EP4572000A4/en active Pending
- 2023-11-08 US US19/100,730 patent/US20260038995A1/en active Pending
- 2023-11-08 JP JP2025506187A patent/JP2025525228A/ja active Pending
- 2023-11-08 CN CN202380016794.8A patent/CN118541869A/zh active Pending
- 2023-11-08 WO PCT/KR2023/017920 patent/WO2024101903A1/ko not_active Ceased
- 2023-11-08 KR KR1020230153737A patent/KR20240067043A/ko active Pending
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| JPH05283099A (ja) * | 1992-04-02 | 1993-10-29 | Hitachi Maxell Ltd | アルカリ蓄電池 |
| KR100601521B1 (ko) * | 2005-03-09 | 2006-07-19 | 삼성에스디아이 주식회사 | 리튬 이차전지 |
| KR20090062542A (ko) * | 2007-12-13 | 2009-06-17 | 삼성에스디아이 주식회사 | 이차 전지용 절연 케이스 및 이를 구비하는 이차 전지 |
| KR20220148247A (ko) | 2020-03-04 | 2022-11-04 | 도쿄엘렉트론가부시키가이샤 | 기판 처리 장치 및 기판 처리 방법 |
| KR20220105147A (ko) * | 2021-01-19 | 2022-07-26 | 주식회사 엘지에너지솔루션 | 배터리, 그리고 이를 포함하는 배터리 팩 및 자동차 |
| CN114284570A (zh) * | 2021-12-28 | 2022-04-05 | 宁德新能源科技有限公司 | 电芯、电池及用电设备 |
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Also Published As
| Publication number | Publication date |
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| US20260038995A1 (en) | 2026-02-05 |
| KR20240067043A (ko) | 2024-05-16 |
| EP4572000A1 (en) | 2025-06-18 |
| JP2025525228A (ja) | 2025-08-01 |
| CN118541869A (zh) | 2024-08-23 |
| EP4572000A4 (en) | 2025-12-31 |
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