WO2013005959A2 - Secondary battery - Google Patents

Secondary battery Download PDF

Info

Publication number
WO2013005959A2
WO2013005959A2 PCT/KR2012/005238 KR2012005238W WO2013005959A2 WO 2013005959 A2 WO2013005959 A2 WO 2013005959A2 KR 2012005238 W KR2012005238 W KR 2012005238W WO 2013005959 A2 WO2013005959 A2 WO 2013005959A2
Authority
WO
WIPO (PCT)
Prior art keywords
battery
pouch
secondary battery
support member
cell
Prior art date
Application number
PCT/KR2012/005238
Other languages
French (fr)
Korean (ko)
Other versions
WO2013005959A3 (en
Inventor
이용준
김영석
김주완
Original Assignee
에스케이이노베이션 주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 에스케이이노베이션 주식회사 filed Critical 에스케이이노베이션 주식회사
Publication of WO2013005959A2 publication Critical patent/WO2013005959A2/en
Publication of WO2013005959A3 publication Critical patent/WO2013005959A3/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—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
    • H01M50/178—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for pouch or flexible bag cells
    • 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
    • H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light 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
    • H01M50/10—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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a secondary battery, and more particularly, the present invention solves problems such as performance degradation caused by breakdown of insulation resistance by using a support member that protects the sealing end of the pouch, and improves battery performance. It relates to a secondary battery that can be.
  • Batteries can be largely divided into primary and secondary batteries.
  • Primary batteries generate electricity by using an irreversible reaction, so they cannot be reused after being used once.
  • a voltaic battery, and the like and the secondary battery uses a reversible reaction, and thus lead-acid batteries, lithium ion batteries, Ni-Cd batteries, and the like, which are reusable after being charged after use.
  • 1 conceptually illustrates a structure of a general lithium ion battery which is one of secondary batteries.
  • Lithium ion batteries and lithium ion polymer batteries have the same structure except that they differ only in the properties of the electrolyte (liquid / solid).
  • a lithium ion battery includes a cathode 1 generally made of carbon and a cathode 2 generally made of a lithium compound, an electrolyte 3 positioned between two poles 1, 2, and And a wire 4 connecting the cathode 1 and the anode 2.
  • Lithium ions in the electrolyte 3 move toward the cathode 1 when charged and toward the anode 2 when discharged, and cause a chemical reaction by emitting or absorbing excess electrons at each pole. do. In this process, electrons flow through the wire 4, and thus electric energy is generated.
  • the secondary battery generally includes the negative electrode 1, the positive electrode 2, the electrolyte 3, and the electric wire 4 as described above.
  • the secondary battery may be formed with a single negative electrode 1, a positive electrode 2, an electrolyte 3 and an electric wire 4, but more generally, a single negative electrode 1 and a positive electrode ( 2), a plurality of unit cells 10 composed of an electrolyte 3 and an electric wire 4 are connected. That is, a plurality of unit cells 10 as described above are contained in the secondary battery pack. Of course, each unit cell 10 is electrically connected to each other.
  • a secondary battery in general, includes a plurality of unit cells therein, and generally includes a pair of external terminal tabs connected to the electrodes of each cell (that is, one negative electrode to which negative electrodes of each unit cell are connected, A positive electrode is connected to each other, and a pair is provided per cell to serve as an electrode.
  • Such secondary cells are generally connected to a plurality of secondary batteries rather than a single one to form a battery as a pack.
  • each of the cells is called a cell (distinguishable from the unit cells constituting the battery), and the tabs of each cell are electrically connected.
  • a form in which a cell forming a battery forms a pouch form that is, a form consisting of a pouch cell can be exemplified.
  • FIG. 2 illustrates an embodiment of a conventional sub battery module having such a configuration, in which a battery cell 10 is sealed by a pouch 20.
  • the pouch type battery has an advantage of having a smaller volume and mass than a can type battery, whereas a soft pouch is used as a container, which may cause mechanical strength and reliability of sealing.
  • localization of current paths to the outside through microcrack or defect is caused by diffusion of gaseous molecules in the electrolyte into the sealing portion of the sealed pouch during the battery manufacturing process. Destruction may occur.
  • an object of the present invention is to protect the pouch sealing portion by using a support member for protecting the sealing portion end of the pouch, which is caused by the insulation resistance is destroyed It is to provide a secondary battery that can solve problems such as deterioration of performance and improve battery performance.
  • an object of the present invention is to insert the end of the sealing portion is inserted into the insertion groove of the support member, it is formed to surround the secondary can prevent the damage to the pouch, and to reduce the moisture or air penetration from the outside of the secondary battery To provide.
  • an object of the present invention is to provide a secondary battery that can support both sides of the battery cell is formed, the support member is formed higher than the cell height including the tab to protect the side where the tab is formed to improve the overall durability It is.
  • the secondary battery 1000 of the present invention includes at least one secondary battery cell 110, an electrode tab 120 extending in one direction from the battery cell 110, and a battery cell 110 therein in a sheet form.
  • the secondary battery 1000 including the secondary battery 1000 is formed in the height direction of the pouch 130, the insertion groove 310 is formed is inserted into the side end portion of the pouch 130 pouch 130 A pair of supporting members 300 for supporting the are provided.
  • the secondary battery 1000 is formed such that a predetermined region of the pouch 130 surrounds the support member 300 so that the support member 300 is in close contact with the side surface of the battery cell 110.
  • the molding member is inserted into the support member 300 in the insertion groove (310).
  • the secondary battery 1000 has a high height of the support member 300 to the upper and lower sides of the pouch 130.
  • the support member 300 is formed in a circular or polygonal cross section.
  • the support member 300 having a polygonal cross section is formed in a direction perpendicular to the line segment where the insertion groove 310 forms a polygon.
  • the battery module case 200 is provided with a mounting portion of a shape corresponding to the shape of the support member 300.
  • the secondary battery of the present invention can protect the pouch sealing part by using a support member that protects the sealing part end of the pouch, and solves problems such as performance degradation caused by breakdown of insulation resistance, and improves battery performance. There is an advantage to improve.
  • the secondary battery of the present invention is inserted into the insertion groove of the support member, the end of the sealing portion is formed to surround the circumference to prevent damage to the pouch, there is an advantage that can reduce the moisture or air penetration from the outside have.
  • the secondary battery of the present invention has the advantage that the support member is formed can support both sides of the battery cell, formed higher than the cell height including the tab to protect the side on which the tab is formed to improve the overall durability. .
  • FIG. 1 is a structural diagram of a typical lithium ion battery.
  • FIG. 2 is a view showing an example of a conventional sub-battery module.
  • FIG 3 is a view showing a secondary battery according to an embodiment of the present invention.
  • FIG. 4 to 6 are a perspective view, an exploded perspective view and a cross-sectional view showing a sub battery module of the secondary battery shown in FIG.
  • FIG. 7 is a view showing an example of forming a supporting member of a secondary battery according to an embodiment of the present invention.
  • FIG 8 and 9 are another perspective view and an exploded perspective view of a sub battery module according to an embodiment of the present invention.
  • FIG. 10 is another cross-sectional view of a sub battery module according to an embodiment of the present invention.
  • the secondary battery 1000 is formed to include the sub battery module 100 and the battery module case 200. At this time, the sub battery module 100 is a pair of support members 300. Is supported by.
  • the sub battery module 100 includes the battery cell 110, the electrode tab 120, and the pouch 130.
  • the sub battery module 100 may include a form in which one battery cell 110 is provided, and a plurality of sub battery modules 100 may be formed with the separator interposed therebetween.
  • the electrode tab 120 extends in one direction from each battery cell 110.
  • the pouch 130 is sealed in a battery cell 110 is accommodated therein in the form of a sheet.
  • the pouch 130 surrounds the remaining surfaces of the battery cell 110 except for the portion where the electrode tab 120 protrudes, and an aluminum laminate sheet is widely used.
  • the battery module case 200 is a case in which the sub-battery module 100 is embedded, and the sub-battery module 100 is at least two stacked side by side so as to have the same surface on which the electrode tab 120 is located.
  • the battery module case 200 having three configurations is illustrated, but the secondary battery 1000 according to the exemplary embodiment of the present invention may be applied to various battery module case 200 types.
  • Secondary battery 1000 is provided with a support member 300 for supporting portions of both sides of the pouch 130 of the sub-battery module 100.
  • the support member 300 is formed in the height direction of the pouch 130, the insertion groove 310 is formed is inserted into the side end portion of the pouch 130 is a sub-battery module 100 to support the pouch 130 Each pair is provided.
  • 4 to 6 illustrate an example of a secondary battery 1000 according to an exemplary embodiment of the present invention, and show one form of the sub battery module 100 and the support member 300.
  • the support member 300 has a height in which the support member 300 is formed to have the same height as that of the pouch 130 of the sub battery module 100, and both sealed ends of the sub battery module 100 are supported.
  • An example of inserting and fixing the insertion groove 310 of the member 300 is illustrated.
  • the support member 300 is a molding material is inserted into the insertion groove 310 before the insertion of the pouch 130, it is possible to further strengthen the insulating properties of the sub-battery module 100, and with the pouch 130 The fixing of the support member 300 may be facilitated.
  • Secondary battery 1000 is formed so that the support member 300 to support both sides of the pouch 130 can further improve the durability, in particular even in the presence of an external force in the left and right direction sub-battery There is an advantage that the module 100 can be stably protected.
  • the secondary battery 1000 according to the embodiment of the present invention has a structure in which both ends of the pouch 130 are wrapped by the support member 300, and may protect the sealing portion of the pouch 130 and the pouch 130.
  • the sealing part can be protected, and thus, there is an advantage in that problems such as performance degradation caused by breakdown of the insulation resistance can be solved and battery performance can be improved.
  • the support member 300 may be formed to have various shapes according to the shape of the battery cell 110, and the various shapes are illustrated in FIG. 7.
  • FIG. 7 (a) to 7 (c) show an example in which the cross section of the support member 300 is circular, triangular, and rectangular in shape.
  • the support member 300 may be formed so that a predetermined region of the pouch 130 surrounds the support member 300, so that when the cross section of the support member 300 is formed in a polygon, the corner portion may be formed. It is preferably formed in a rounded shape.
  • the support member 300 is preferably formed in the vertical portion to the line segment forming the insertion groove is formed in the corner portion polygon to prevent the fixing angle of the pouch 130 is narrowed.
  • the end portion of the pouch 130 is inserted into the insertion groove 310 and the portion formed to surround the support member 300
  • the angle between is approximately 90 °.
  • the insertion groove 310 is formed at the corner of the support member 300, the end of the pouch 130 is wrapped around the support member 300 and the portion inserted into the insertion groove 310.
  • the angle between the portions to be formed can prevent sheet damage from the conventional example shown in FIG. 2 at approximately 45 °, but damage of the pouch 130 may be caused than from the example shown in FIG.
  • the insertion groove 310 may be formed in a direction perpendicular to the line segment forming the polygon.
  • a seating part having a shape corresponding to that of the sub battery module 100 supported by the support member 300 is formed.
  • the height of the support member 300 may be formed high up and down the pouch 130.
  • the support member 300 illustrated in FIGS. 8 and 9 may be formed so that the insertion groove 310 into which the pouch 130 forming portion of the sub battery module 100 is inserted is not displayed on the upper side and the lower side of the pouch 130.
  • the support member 300 absorbs the impact even in the external force in the vertical direction to protect the battery cell 110.
  • the secondary battery 1000 according to the embodiment of the present invention has an advantage of not only preventing the problem due to insulation breakdown by using the support member 300 but also improving the overall durability.
  • FIG. 10 illustrates another secondary battery 1000 according to an exemplary embodiment of the present invention, and illustrates a suitable example when the sealing portion of the pouch 130 is formed in both sides of the sub battery module 100.
  • a predetermined region of the pouch 130 is formed to surround the support member 300 so that the support member 300 is in close contact with the side surface of the battery cell 110.
  • the support member 300 may be wrapped in whole or in part by the pouch 130.
  • 3 to 9 illustrate an example in which the battery cell 100 is formed in a long hexagonal shape in a left and right direction, and in FIG. 10, an example in which the battery cell 100 is trapezoidal.
  • the secondary battery 1000 according to the exemplary embodiment of the present invention is not limited to a specific shape of the battery cell 100, and may use various support member 300 shapes according to various battery cell 1000 shapes.
  • the secondary battery 1000 uses a support member 300 capable of supporting both side surfaces of the battery cell 100, such as performance degradation caused by breakdown of the insulation resistance. There is an advantage to solve the problem, and improve the battery performance.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Abstract

The present invention relates to a secondary battery, and more specifically to a secondary battery which can solve problems of performance degradation and the like caused by insulation resistance failure through the use of a support member for protecting the end portion of the sealing portion of a pouch so that battery characteristics can be improved.

Description

이차전지Secondary battery
본 발명은 이차전지에 관한 것으로서, 더욱 상세하게 본 발명은 파우치의 실링부 단부를 보호하는 지지부재를 이용함으로써 절연 저항이 파괴됨으로 인해 발생되는 성능 저하 등의 문제점을 해결하고, 전지 성능을 향상할 수 있는 이차전지에 관한 것이다.The present invention relates to a secondary battery, and more particularly, the present invention solves problems such as performance degradation caused by breakdown of insulation resistance by using a support member that protects the sealing end of the pouch, and improves battery performance. It relates to a secondary battery that can be.
전지는 크게 1차 전지와 2차 전지로 구분될 수 있는데, 1차 전지란 비가역적인 반응을 이용하여 전기를 생산하므로 한 번 사용된 후에는 재사용이 불가능한 전지로서 일반적으로 많이 사용하는 건전지, 수은 전지, 볼타 전지 등이 이에 속하며, 2차 전지는 이와는 달리 가역적인 반응을 이용하므로 사용 후 충전하여 재사용이 가능한 전지로서 납축전지, 리튬 이온 전지, 니카드(Ni-Cd) 전지 등이 이에 속한다. 도 1은 2차 전지 중 하나인 일반적인 리튬 이온 전지의 구조를 개념적으로 도시한 것이다. 리튬 이온 전지와 리튬 이온 폴리머 전지는 전해질의 성상(액체/고체)만 다를 뿐 그 구조는 동일하다. Batteries can be largely divided into primary and secondary batteries. Primary batteries generate electricity by using an irreversible reaction, so they cannot be reused after being used once. In this regard, a voltaic battery, and the like, and the secondary battery uses a reversible reaction, and thus lead-acid batteries, lithium ion batteries, Ni-Cd batteries, and the like, which are reusable after being charged after use. 1 conceptually illustrates a structure of a general lithium ion battery which is one of secondary batteries. Lithium ion batteries and lithium ion polymer batteries have the same structure except that they differ only in the properties of the electrolyte (liquid / solid).
전지에 따라 전해질이나 극의 재질이 도 1에 기재된 재질과는 조금씩 다를 수도 있다. 도 1에 도시된 바와 같이, 리튬 이온 전지는 일반적으로 탄소로 이루어지는 음극(1) 및 일반적으로 리튬 화합물로 이루어지는 양극(2), 두 극(1, 2) 사이에 위치하는 전해질(3), 그리고 음극(1) 및 양극(2)을 연결하는 전선(4)을 포함하여 구성된다. 전해질(3) 내의 리튬 이온은 충전(charge) 시에는 음극(1) 쪽으로, 방전(discharge) 시에는 양극(2) 쪽으로 이동하며, 각 극에서 잉여의 전자를 방출하거나 또는 흡수하면서 화학 반응을 일으키게 된다. 이러한 과정에서 전선(4)에 전자가 흐르게 되며, 이에 따라 전기 에너지가 발생하게 된다. 여기에서 리튬 이온 전지를 사용하여 설명하였으나, 다른 2차 전지의 경우도 전극 또는 전해질로 사용되는 물질이 달라질 뿐 기본 원리 및 구조는 이와 동일하다. 즉, 일반적으로 2차 전지는 상술한 바와 같이 음극(1), 양극(2), 전해질(3) 및 전선(4)을 포함하여 이루어지는 것이다.Depending on the battery, the material of the electrolyte or the electrode may be slightly different from the material of FIG. 1. As shown in FIG. 1, a lithium ion battery includes a cathode 1 generally made of carbon and a cathode 2 generally made of a lithium compound, an electrolyte 3 positioned between two poles 1, 2, and And a wire 4 connecting the cathode 1 and the anode 2. Lithium ions in the electrolyte 3 move toward the cathode 1 when charged and toward the anode 2 when discharged, and cause a chemical reaction by emitting or absorbing excess electrons at each pole. do. In this process, electrons flow through the wire 4, and thus electric energy is generated. Although described using a lithium ion battery herein, other secondary batteries also have the same basic principle and structure as those used as electrodes or electrolytes. That is, the secondary battery generally includes the negative electrode 1, the positive electrode 2, the electrolyte 3, and the electric wire 4 as described above.
이 때, 2차 전지는 음극(1), 양극(2), 전해질(3) 및 전선(4)이 각각 단일 개 구비되어 형성될 수도 있지만, 보다 일반적으로는 단일 개의 음극(1), 양극(2), 전해질(3) 및 전선(4)으로 이루어지는 단위 셀(10)이 다수 개 연결되어 이루어진다. 즉, 2차 전지 팩의 내부에는 설명한 바와 같은 단위 셀(10)이 다수 개 들어 있게 된다. 물론 각 단위 셀(10)은 전기적으로 서로 연결된다.At this time, the secondary battery may be formed with a single negative electrode 1, a positive electrode 2, an electrolyte 3 and an electric wire 4, but more generally, a single negative electrode 1 and a positive electrode ( 2), a plurality of unit cells 10 composed of an electrolyte 3 and an electric wire 4 are connected. That is, a plurality of unit cells 10 as described above are contained in the secondary battery pack. Of course, each unit cell 10 is electrically connected to each other.
일반적으로 2차 전지는 그 내부에 다수 개의 단위 셀을 포함하고 있으며, 또한 일반적으로 각 셀의 전극들과 연결된 한 쌍의 외부 단자 탭(즉 각 단위 셀의 음극들이 연결된 하나의 음극, 각 셀의 양극들이 연결된 하나의 양극으로서, 전지 하나당 한 쌍이 구비되어 전극으로서 기능하는 탭)이 외부로 노출되어 있는 형태로 구성된다. 이와 같은 2차 전지들은 일반적으로 단일 개 사용되기보다는 다수 개가 연결되어 하나의 팩으로서의 배터리를 형성하게 된다. 이러한 팩 형태의 배터리에서 각각의 전지들을 (전지를 구성하는 단위 셀과 구별하여) 셀이라 칭하며, 물론 각 셀의 탭들은 전기적으로 연결되게 된다. In general, a secondary battery includes a plurality of unit cells therein, and generally includes a pair of external terminal tabs connected to the electrodes of each cell (that is, one negative electrode to which negative electrodes of each unit cell are connected, A positive electrode is connected to each other, and a pair is provided per cell to serve as an electrode. Such secondary cells are generally connected to a plurality of secondary batteries rather than a single one to form a battery as a pack. In this pack type battery, each of the cells is called a cell (distinguishable from the unit cells constituting the battery), and the tabs of each cell are electrically connected.
이와 같은 2차 전지의 형태 중 널리 사용되는 형태는, 배터리를 형성하는 셀이 파우치형을 이루고 있는 형태, 즉 파우치 셀로 이루어지는 형태를 예로 들 수 있다. As a form widely used among such forms of secondary batteries, a form in which a cell forming a battery forms a pouch form, that is, a form consisting of a pouch cell can be exemplified.
도 2는 이러한 형태로 구성되는 종래의 서브 배터리 모듈의 일실시예를 도시한 것으로서, 배터리 셀(10)이 파우치(20)에 의해 실링된다. 2 illustrates an embodiment of a conventional sub battery module having such a configuration, in which a battery cell 10 is sealed by a pouch 20.
상기 도 2에 도시한 서브 배터리 모듈의 경우 파우치가 각을 이루어 접힘에 따라 알루미늄층 자체의 깨짐 현상이 쉽게 유발될 수 있는 문제점이 있다.In the case of the sub-battery module illustrated in FIG. 2, as the pouch is folded at an angle, there is a problem that a cracking phenomenon of the aluminum layer itself may be easily caused.
상기 파우치형 배터리는 캔형 배터리에 비교하여 작은 부피 및 질량을 가지는 장점이 있는데 반해, 연질의 파우치를 용기로 사용하므로 기계적 강도 및 밀봉의 신뢰성 문제가 유발될 수 있다.The pouch type battery has an advantage of having a smaller volume and mass than a can type battery, whereas a soft pouch is used as a container, which may cause mechanical strength and reliability of sealing.
특히, 배터리 제조 공정 중에 실링된 파우치의 실링부위에 전해액의 기상분자들의 확산에 의해 실링부위에 마이크로크랙(microcrack) 혹은 결함(defect)을 통해 외부와의 전류 통로(path)가 생기게 되어 국부적인 절연파괴가 발생할 수 있다.In particular, localization of current paths to the outside through microcrack or defect is caused by diffusion of gaseous molecules in the electrolyte into the sealing portion of the sealed pouch during the battery manufacturing process. Destruction may occur.
이러한 국부적인 절연파괴가 발생할 경우에, 영역이 셀 커버에 접지 시, 전압이 강하될 수 있으며, 연결된 다른 셀의 성능 저하를 유발할 수 있다. When such local breakdown occurs, when the area is grounded to the cell cover, the voltage may drop and cause performance degradation of another connected cell.
본 발명은 상술한 바와 같은 문제점을 해결하기 위하여 안출된 것으로서, 본 발명의 목적은 파우치의 실링부 단부를 보호하는 지지부재를 이용함으로써 파우치 실링부를 보호할 수 있으며, 절연 저항이 파괴됨으로 인해 발생되는 성능 저하 등의 문제점을 해결하고, 전지 성능을 향상할 수 있는 이차전지를 제공하는 것이다. The present invention has been made to solve the problems described above, an object of the present invention is to protect the pouch sealing portion by using a support member for protecting the sealing portion end of the pouch, which is caused by the insulation resistance is destroyed It is to provide a secondary battery that can solve problems such as deterioration of performance and improve battery performance.
특히, 본 발명의 목적은 실링부의 단부가 지지부재의 삽입홈에 삽입되고, 그 둘레를 감싸도록 형성됨으로써 파우치의 손상을 방지할 수 있으며, 외부로부터 수분 또는 공기 침투를 저하할 수 있는 이차전지를 제공하는 것이다. In particular, an object of the present invention is to insert the end of the sealing portion is inserted into the insertion groove of the support member, it is formed to surround the secondary can prevent the damage to the pouch, and to reduce the moisture or air penetration from the outside of the secondary battery To provide.
또한, 본 발명의 목적은 지지부재가 형성되어 배터리 셀의 양측을 지할 수 있고, 탭을 포함한 셀 높이보다 높게 형성되어 탭이 형성된 측을 보호할 수 있어 전체 내구성을 향상할 수 있는 이차전지를 제공하는 것이다. In addition, an object of the present invention is to provide a secondary battery that can support both sides of the battery cell is formed, the support member is formed higher than the cell height including the tab to protect the side where the tab is formed to improve the overall durability It is.
본 발명의 이차전지(1000)는 적어도 하나 이상의 이차전지 셀(110)과, 배터리 셀(110)로부터 일측 방향으로 연장되어 형성되는 전극 탭(120)과, 시트형태로 내부에 배터리 셀(110)이 수용되어 실링되는 파우치(130)를 포함하는 서브 배터리 모듈(100); 및 서브 배터리 모듈(100)이 병렬 배치되는 배터리 모듈 케이스(200); 를 포함하는 이차 전지(1000)에 있어서, 이차 전지(1000)는 파우치(130)의 높이방향으로 형성되되, 파우치(130)의 측단부가 삽입되는 삽입홈(310)이 형성되어 파우치(130)를 지지하는 한 쌍의 지지부재(300)가 구비된다.The secondary battery 1000 of the present invention includes at least one secondary battery cell 110, an electrode tab 120 extending in one direction from the battery cell 110, and a battery cell 110 therein in a sheet form. A sub battery module 100 including a pouch 130 that is received and sealed; And a battery module case 200 in which the sub battery modules 100 are arranged in parallel. In the secondary battery 1000 including, the secondary battery 1000 is formed in the height direction of the pouch 130, the insertion groove 310 is formed is inserted into the side end portion of the pouch 130 pouch 130 A pair of supporting members 300 for supporting the are provided.
또한, 이차전지(1000)는 지지부재(300)가 배터리 셀(110)의 측면에 밀착되도록 파우치(130)의 일정 영역이 지지부재(300) 둘레를 감싸도록 형성된다.In addition, the secondary battery 1000 is formed such that a predetermined region of the pouch 130 surrounds the support member 300 so that the support member 300 is in close contact with the side surface of the battery cell 110.
또, 지지부재(300)는 삽입홈(310)에 몰딩재가 삽입된다.In addition, the molding member is inserted into the support member 300 in the insertion groove (310).
아울러, 이차전지(1000)는 지지부재(300)의 높이가 파우치(130)의 상하측으로 높게 형성된다.In addition, the secondary battery 1000 has a high height of the support member 300 to the upper and lower sides of the pouch 130.
또한, 지지부재(300)는 단면이 원형, 또는 다각형으로 형성된다.In addition, the support member 300 is formed in a circular or polygonal cross section.
또, 다각형 단면을 갖는 지지부재(300)는 삽입홈(310)이 다각형을 형성하는 선분에 수직한 방향으로 형성된다.In addition, the support member 300 having a polygonal cross section is formed in a direction perpendicular to the line segment where the insertion groove 310 forms a polygon.
아울러, 배터리 모듈 케이스(200)는 지지부재(300) 형태에 대응되는 형태의 안착부가 형성된다.In addition, the battery module case 200 is provided with a mounting portion of a shape corresponding to the shape of the support member 300.
이에 따라, 본 발명의 이차전지는 파우치의 실링부 단부를 보호하는 지지부재를 이용함으로써 파우치 실링부를 보호할 수 있으며, 절연 저항이 파괴됨으로 인해 발생되는 성능 저하 등의 문제점을 해결하고, 전지 성능을 향상할 수 있는 장점이 있다. Accordingly, the secondary battery of the present invention can protect the pouch sealing part by using a support member that protects the sealing part end of the pouch, and solves problems such as performance degradation caused by breakdown of insulation resistance, and improves battery performance. There is an advantage to improve.
특히, 본 발명의 이차전지는 실링부의 단부가 지지부재의 삽입홈에 삽입되고, 그 둘레를 감싸도록 형성됨으로써 파우치의 손상을 방지할 수 있으며, 외부로부터 수분 또는 공기 침투를 저하할 수 있는 장점이 있다.In particular, the secondary battery of the present invention is inserted into the insertion groove of the support member, the end of the sealing portion is formed to surround the circumference to prevent damage to the pouch, there is an advantage that can reduce the moisture or air penetration from the outside have.
또한, 본 발명의 이차전지는 지지부재가 형성되어 배터리 셀의 양측을 지할 수 있고, 탭을 포함한 셀 높이보다 높게 형성되어 탭이 형성된 측을 보호할 수 있어 전체 내구성을 향상할 수 있는 장점이 있다. In addition, the secondary battery of the present invention has the advantage that the support member is formed can support both sides of the battery cell, formed higher than the cell height including the tab to protect the side on which the tab is formed to improve the overall durability. .
도 1은 일반적인 리튬 이온 전지의 구조도.1 is a structural diagram of a typical lithium ion battery.
도 2는 종래의 서브 배터리 모듈 예를 나타낸 도면.2 is a view showing an example of a conventional sub-battery module.
도 3은 본 발명의 실시예에 따른 이차전지를 나타낸 도면3 is a view showing a secondary battery according to an embodiment of the present invention.
도 4 내지 도 6은 도 3에 도시한 이차전지의 서브 배터리 모듈을 나타낸 사시도, 분해사시도 및 단면도.4 to 6 are a perspective view, an exploded perspective view and a cross-sectional view showing a sub battery module of the secondary battery shown in FIG.
도 7은 본 발명의 실시예에 따른 이차전지의 지지부재 형성 예를 나타낸 도면.7 is a view showing an example of forming a supporting member of a secondary battery according to an embodiment of the present invention.
도 8 및 도 9는 본 발명의 실시예에 따른 서브 배터리 모듈의 다른 사시도 및 분해사시도.8 and 9 are another perspective view and an exploded perspective view of a sub battery module according to an embodiment of the present invention.
도 10은 본 발명의 실시예에 따른 서브 배터리 모듈의 또 다른 단면도.10 is another cross-sectional view of a sub battery module according to an embodiment of the present invention.
* 부호의 설명 ** Explanation of Codes *
1000 : 배터리1000: Battery
100 : 서브 배터리 모듈100: sub battery module
110 : 배터리 셀 120 : 전극 탭110: battery cell 120: electrode tab
130 : 파우치130: pouch
200 : 배터리 모듈 케이스200: battery module case
300 : 지지부재 310 : 삽입홈300: support member 310: insertion groove
이하, 상술한 바와 같은 특징을 가지는 본 발명의 이차전지(1000)를 첨부된 도면을 참조로 상세히 설명한다.Hereinafter, the secondary battery 1000 of the present invention having the characteristics as described above will be described in detail with reference to the accompanying drawings.
본 발명의 실시예에 따른 이차전지(1000)는 서브 배터리 모듈(100) 및 배터리 모듈 케이스(200)를 포함하여 형성되며, 이 때, 서브 배터리 모듈(100)은 한 쌍의 지지부재(300)에 의해 지지된다.The secondary battery 1000 according to the exemplary embodiment of the present invention is formed to include the sub battery module 100 and the battery module case 200. At this time, the sub battery module 100 is a pair of support members 300. Is supported by.
먼저, 서브 배터리 모듈(100)은 배터리 셀(110), 전극 탭(120), 및 파우치(130)를 포함하여 형성된다. First, the sub battery module 100 includes the battery cell 110, the electrode tab 120, and the pouch 130.
상기 서브 배터리 모듈(100)은 하나의 배터리 셀(110)이 구비되는 형태를 포함하여, 분리판을 사이에 두고 복수개가 형성될 수 있다.The sub battery module 100 may include a form in which one battery cell 110 is provided, and a plurality of sub battery modules 100 may be formed with the separator interposed therebetween.
상기 전극 탭(120)은 각각의 배터리 셀(110)로부터 일측 방향으로 연장되어 형성되는 구성이다.The electrode tab 120 extends in one direction from each battery cell 110.
상기 파우치(130)는 시트형태로 내부에 배터리 셀(110)이 수용되어 실링된다.The pouch 130 is sealed in a battery cell 110 is accommodated therein in the form of a sheet.
더욱 상세하게, 파우치(130)는 전극 탭(120)이 돌출형성되는 부분을 제외한 배터리 셀(110)의 나머지 면들을 감싸는 형태로, 알루미늄 라미네이트 시트가 널리 이용되고 있다. In more detail, the pouch 130 surrounds the remaining surfaces of the battery cell 110 except for the portion where the electrode tab 120 protrudes, and an aluminum laminate sheet is widely used.
상기 배터리 모듈 케이스(200)는 서브 배터리 모듈(100)이 내장되는 케이스로서, 서브 배터리 모듈(100)이 전극 탭(120)이 있는 면이 동일하도록 적어도 둘 이상 적층되어 나란하게 배치된다. The battery module case 200 is a case in which the sub-battery module 100 is embedded, and the sub-battery module 100 is at least two stacked side by side so as to have the same surface on which the electrode tab 120 is located.
도 3에서, 3개의 구성으로 이루어지는 배터리 모듈 케이스(200)를 나타내었으나, 본 발명의 실시예에 따른 이차전지(1000)는 더욱 다양한 배터리 모듈 케이스(200) 형태에 적용 실시될 수 있다. In FIG. 3, the battery module case 200 having three configurations is illustrated, but the secondary battery 1000 according to the exemplary embodiment of the present invention may be applied to various battery module case 200 types.
본 발명의 실시예에 따른 이차전지(1000)는 서브 배터리 모듈(100)의 양측 파우치(130) 부분을 지지하는 지지부재(300)가 구비된다. Secondary battery 1000 according to an embodiment of the present invention is provided with a support member 300 for supporting portions of both sides of the pouch 130 of the sub-battery module 100.
상기 지지부재(300)는 파우치(130)의 높이방향으로 형성되는 구성으로서, 파우치(130)의 측단부가 삽입되는 삽입홈(310)이 형성되어 파우치(130)를 지지하도록 서브 배터리 모듈(100) 각각에 한 쌍이 구비된다.The support member 300 is formed in the height direction of the pouch 130, the insertion groove 310 is formed is inserted into the side end portion of the pouch 130 is a sub-battery module 100 to support the pouch 130 Each pair is provided.
도 4 내지 도 6은 본 발명의 실시예에 따른 이차전지(1000)의 일예를 나타낸 도면으로서, 서브 배터리 모듈(100)과 지지부재(300)의 한 형태를 나타내었다.4 to 6 illustrate an example of a secondary battery 1000 according to an exemplary embodiment of the present invention, and show one form of the sub battery module 100 and the support member 300.
도 4 내지 도 6에 도시한 형태는 지지부재(300)의 형성 높이가 서브 배터리 모듈(100)의 파우치(130) 높이와 동일하게 형성되며, 서브 배터리 모듈(100)의 실링된 양측단부가 지지부재(300)의 삽입홈(310)에 삽입고정되는 예를 나타내었다. 4 to 6 has a height in which the support member 300 is formed to have the same height as that of the pouch 130 of the sub battery module 100, and both sealed ends of the sub battery module 100 are supported. An example of inserting and fixing the insertion groove 310 of the member 300 is illustrated.
이 때, 지지부재(300)는 파우치(130)의 삽입 이전에, 삽입홈(310)에 몰딩재가 삽입되어 있어, 서브 배터리 모듈(100)의 절연 특성을 보다 강화할 수 있고, 파우치(130)와 지지부재(300)의 고정이 용이하도록 할 수 있다. At this time, the support member 300 is a molding material is inserted into the insertion groove 310 before the insertion of the pouch 130, it is possible to further strengthen the insulating properties of the sub-battery module 100, and with the pouch 130 The fixing of the support member 300 may be facilitated.
본 발명의 실시예에 따른 이차전지(1000)는 지지부재(300)가 파우치(130) 양측을 지지하도록 형성되어 내구성을 보다 향상할 수 있으며, 특히 좌우방향으로의 외력이 존재하는 상황에서도 서브 배터리 모듈(100)을 안정적으로 보호할 수 있는 장점이 있다. Secondary battery 1000 according to an embodiment of the present invention is formed so that the support member 300 to support both sides of the pouch 130 can further improve the durability, in particular even in the presence of an external force in the left and right direction sub-battery There is an advantage that the module 100 can be stably protected.
또한, 본 발명의 실시예에 따른 이차전지(1000)는 파우치(130)의 양단부가 지지부재(300)에 의해 감싸지는 구조로서, 파우치(130) 실링부를 보호할 수 있으며, 파우치(130)의 실링부를 보호할 수 있으며, 이에 따라, 절연 저항이 파괴됨으로 인해 발생되는 성능 저하 등의 문제점을 해결하고, 전지 성능을 향상할 수 있는 장점이 있다. In addition, the secondary battery 1000 according to the embodiment of the present invention has a structure in which both ends of the pouch 130 are wrapped by the support member 300, and may protect the sealing portion of the pouch 130 and the pouch 130. The sealing part can be protected, and thus, there is an advantage in that problems such as performance degradation caused by breakdown of the insulation resistance can be solved and battery performance can be improved.
상기 지지부재(300)는 배터리 셀(110)의 형태에 따라 다양한 형태를 갖도록 형성될 수 있으며, 도 7에 그 다양한 형태를 나타내었다. The support member 300 may be formed to have various shapes according to the shape of the battery cell 110, and the various shapes are illustrated in FIG. 7.
도 7 (a) 내지 (c)는 지지부재(300)의 단면이 원형, 삼각형, 및 사각형 형태인 예를 나타내었다. 7 (a) to 7 (c) show an example in which the cross section of the support member 300 is circular, triangular, and rectangular in shape.
이 때, 지지부재(300)는 파우치(130)의 일정 영역이 지지부재(300)의 둘레를 감싸도록 형성될 수 있으므로, 지지부재(300)의 단면이 다각형으로 형성될 경우에, 모서리 부분이 라운드진 형태로 형성되는 것이 바람직하다. At this time, the support member 300 may be formed so that a predetermined region of the pouch 130 surrounds the support member 300, so that when the cross section of the support member 300 is formed in a polygon, the corner portion may be formed. It is preferably formed in a rounded shape.
또한, 지지부재(300)는 삽임홈이 모서리 부분에 형성된 다각형을 형성하는 선분에 수직 부분에 형성되어 파우치(130)의 고정 각도가 좁아지는 것을 방지할 수 있도록 하는 것이 바람직하다. In addition, the support member 300 is preferably formed in the vertical portion to the line segment forming the insertion groove is formed in the corner portion polygon to prevent the fixing angle of the pouch 130 is narrowed.
더욱 상세하게, 도 7 (c)에 도시한 지지부재(300)의 경우, 파우치(130)의 단부가 삽입홈(310)에 삽입된 부분과, 지지부재(300) 둘레를 감싸도록 형성되는 부분 사이의 각도는 대략 90 °이다.More specifically, in the case of the support member 300 shown in Figure 7 (c), the end portion of the pouch 130 is inserted into the insertion groove 310 and the portion formed to surround the support member 300 The angle between is approximately 90 °.
만약, 삽입홈(310)이 지지부재(300)의 모서리부에 형형성되는 경우에, 파우치(130)의 단부가 삽입홈(310)에 삽입된 부분과, 지지부재(300) 둘레를 감싸도록 형성되는 부분 사이의 각도는 대략 45 ° 도 2에 도시한 종래예보다는 시트 손상을 방지할 수 있으나, 위 도 7 (c)에 도시한 예보다는 파우치(130)의 손상이 유발될 수 있으므로, 지지부재(300)가 다각형 단면을 갖도록 형성되는 경우에, 삽입홈(310)이 다각형을 형성하는 선분에 수직한 방향으로 형성될 수 있다.If the insertion groove 310 is formed at the corner of the support member 300, the end of the pouch 130 is wrapped around the support member 300 and the portion inserted into the insertion groove 310. The angle between the portions to be formed can prevent sheet damage from the conventional example shown in FIG. 2 at approximately 45 °, but damage of the pouch 130 may be caused than from the example shown in FIG. When the member 300 is formed to have a polygonal cross section, the insertion groove 310 may be formed in a direction perpendicular to the line segment forming the polygon.
상기 이차전지(1000) 케이스는 지지부재(300)에 지지되는 서브 배터리 모듈(100)의 형태에 대응되는 형태의 안착부가 형성된다.In the case of the secondary battery 1000, a seating part having a shape corresponding to that of the sub battery module 100 supported by the support member 300 is formed.
또한, 본 발명의 실시예에 따른 이차전지(1000)는 도 8 및 도 9에 도시한 바와 같이, 지지부재(300)의 높이가 파우치(130)의 상하측으로 높게 형성될 수 있다. In addition, the secondary battery 1000 according to the embodiment of the present invention, as shown in Figures 8 and 9, the height of the support member 300 may be formed high up and down the pouch 130.
즉, 도 8 및 도 9에 도시한 지지부재(300)는 서브 배터리 모듈(100)의 파우치(130) 형성 부분이 삽입되는 삽입홈(310)이 상측 및 하측에 표시되지 않도록 파우치(130)의 높이보다 높게 형성된 예를 나타낸 것으로서, 상하방향으로의 외력에도 그 충격을 지지부재(300)가 흡수하여 배터리 셀(110)을 보호할 수 있는 예를 나타내었다. That is, the support member 300 illustrated in FIGS. 8 and 9 may be formed so that the insertion groove 310 into which the pouch 130 forming portion of the sub battery module 100 is inserted is not displayed on the upper side and the lower side of the pouch 130. As an example formed higher than the height, the support member 300 absorbs the impact even in the external force in the vertical direction to protect the battery cell 110.
이에 따라, 본 발명의 실시예에 따른 이차전지(1000)는 지지부재(300)를 이용함으로써 절연파괴로 인한 문제점을 예방할 수 있을 뿐만 아니라 전체 내구성을 향상할 수 있는 장점이 있다. Accordingly, the secondary battery 1000 according to the embodiment of the present invention has an advantage of not only preventing the problem due to insulation breakdown by using the support member 300 but also improving the overall durability.
도 10은 본 발명의 실시예에 따른 다른 이차전지(1000)를 나타낸 것으로서, 파우치(130)의 실링부분이 서브 배터리 모듈(100)의 양측 방향으로 넓게 형성되어 있는 경우에 적합한 예를 나타내었다. FIG. 10 illustrates another secondary battery 1000 according to an exemplary embodiment of the present invention, and illustrates a suitable example when the sealing portion of the pouch 130 is formed in both sides of the sub battery module 100.
상기 도 10에 도시한 예는 지지부재(300)가 배터리 셀(110) 측면에 밀착되도록 파우치(130)의 일정 영역이 지지부재(300) 둘레를 감싸도록 형성된다.In the example shown in FIG. 10, a predetermined region of the pouch 130 is formed to surround the support member 300 so that the support member 300 is in close contact with the side surface of the battery cell 110.
이 때, 파우치(130)의 실링부분의 형성 넓이에 따라, 지지부재(300)는 파우치(130)에 의해 전체 또는 일부가 감싸질 수 있다.At this time, according to the forming area of the sealing portion of the pouch 130, the support member 300 may be wrapped in whole or in part by the pouch 130.
도 3 내지 도 9에서 배터리 셀(100)이 좌우 방향으로 긴 6각형 형태로 형성된 예를 나타내었으며, 도 10에서 배터리 셀(100)이 사다리꼴 형태인 예를 나타내었다.3 to 9 illustrate an example in which the battery cell 100 is formed in a long hexagonal shape in a left and right direction, and in FIG. 10, an example in which the battery cell 100 is trapezoidal.
본 발명의 실시예에 따른 이차전지(1000)는 배터리 셀(100)의 특정 형태에 한정되지 않으며, 다양한 배터리 셀(1000) 형태에 따라 다양한 지지부재(300) 형태를 이용할 수 있다.The secondary battery 1000 according to the exemplary embodiment of the present invention is not limited to a specific shape of the battery cell 100, and may use various support member 300 shapes according to various battery cell 1000 shapes.
이에 따라, 본 발명의 실시예에 따른 이차전지(1000)는 배터리 셀(100)의 양측면을 지지할 수 있는 지지부재(300)를 이용하여, 절연 저항이 파괴됨으로 인해 발생되는 성능 저하 등의 문제점을 해결하고, 전지 성능을 향상할 수 있는 장점이 있다. Accordingly, the secondary battery 1000 according to the embodiment of the present invention uses a support member 300 capable of supporting both side surfaces of the battery cell 100, such as performance degradation caused by breakdown of the insulation resistance. There is an advantage to solve the problem, and improve the battery performance.
본 발명은 한 실시예에 한정되지 아니하며, 적용범위가 다양함은 물론이고, 청구범위에서 청구하는 본 발명의 요지를 벗어남이 없이 당해 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 누구든지 다양한 변형 실시가 가능한 것은 물론이다.The present invention is not limited to one embodiment, and the scope of application is various, as well as those skilled in the art to which the present invention pertains without departing from the gist of the invention claimed in the claims. It goes without saying that modifications can be made.

Claims (7)

  1. 적어도 하나 이상의 배터리 셀과, 상기 배터리 셀로부터 일측 방향으로 연장되어 형성되는 전극 탭과, 시트형태로 내부에 상기 배터리 셀이 수용되어 실링되는 파우치를 포함하는 서브 배터리 모듈; 및 상기 서브 배터리 모듈이 병렬 배치되는 배터리 모듈 케이스; 를 포함하는 이차전지에 있어서, A sub battery module including at least one battery cell, an electrode tab extending in one direction from the battery cell, and a pouch in which the battery cell is received and sealed in a sheet form; And a battery module case in which the sub battery modules are arranged in parallel. In the secondary battery comprising a,
    상기 이차전지는 The secondary battery
    상기 파우치의 높이방향으로 형성되되, 상기 파우치의 측단부가 삽입되는 삽입홈이 형성되어 상기 파우치를 지지하는 한 쌍의 지지부재가 구비되는 이차전지. The secondary battery is formed in the height direction of the pouch, the insertion groove is formed is inserted into the side end portion of the pouch is provided with a pair of support members for supporting the pouch.
  2. 제1항에 있어서, The method of claim 1,
    상기 이차전지는 The secondary battery
    상기 지지부재가 상기 배터리 셀의 측면에 밀착되도록 상기 파우치의 일정 영역이 상기 지지부재 둘레를 감싸도록 형성되는 이차전지.The secondary battery is formed so that a predetermined region of the pouch surrounds the support member so that the support member is in close contact with the side of the battery cell.
  3. 제1항에 있어서, The method of claim 1,
    상기 지지부재는 상기 삽입홈에 몰딩재가 삽입되는 이차전지.The support member is a secondary battery in which a molding material is inserted into the insertion groove.
  4. 제1항에 있어서, The method of claim 1,
    상기 이차전지는 상기 지지부재의 높이가 상기 파우치의 상하측으로 높게 형성되는 이차전지.The secondary battery has a height of the support member is formed high up and down the pouch.
  5. 제1항에 있어서, The method of claim 1,
    상기 지지부재는 단면이 원형, 또는 다각형으로 형성되는 이차전지.The supporting member has a cross-section of the secondary battery is formed in a circular or polygonal.
  6. 제5항에 있어서, The method of claim 5,
    상기 다각형 단면을 갖는 지지부재는 상기 삽입홈이 다각형을 형성하는 선분에 수직한 방향으로 형성되는 이차전지.The support member having the polygonal cross section is a secondary battery is formed in the direction perpendicular to the line segment the insertion groove forms a polygon.
  7. 제1항 내지 제6항에 있어서, The method according to claim 1 to 6,
    상기 배터리 케이스는 상기 지지부재 형태에 대응되는 형태의 안착부가 형성되는 이차전지.The battery case is a secondary battery is provided with a mounting portion of a shape corresponding to the support member shape.
PCT/KR2012/005238 2011-07-06 2012-07-02 Secondary battery WO2013005959A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2011-0066982 2011-07-06
KR1020110066982A KR20130005528A (en) 2011-07-06 2011-07-06 Secondary battery having enhanced electrical insulation

Publications (2)

Publication Number Publication Date
WO2013005959A2 true WO2013005959A2 (en) 2013-01-10
WO2013005959A3 WO2013005959A3 (en) 2013-02-28

Family

ID=47437539

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/005238 WO2013005959A2 (en) 2011-07-06 2012-07-02 Secondary battery

Country Status (2)

Country Link
KR (1) KR20130005528A (en)
WO (1) WO2013005959A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106159150A (en) * 2016-08-30 2016-11-23 王春阳 Soft-package battery management container

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102246772B1 (en) 2014-04-23 2021-04-30 삼성에스디아이 주식회사 Battery pack
KR102210460B1 (en) * 2014-04-24 2021-02-02 에스케이이노베이션 주식회사 Battery cell assembly for secondary battery
EP3340336B1 (en) 2015-11-05 2019-05-15 LG Chem, Ltd. Battery module
US11171375B2 (en) * 2016-03-25 2021-11-09 Enevate Corporation Stepped electrochemical cells with folded sealed portion

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090047924A (en) * 2007-11-09 2009-05-13 주식회사 엘지화학 Battery cell having improved thermal stability and middle or large-sized battery module employed with the same
KR20100071844A (en) * 2008-12-19 2010-06-29 엘에스산전 주식회사 On-off device of circuit breaker
JP2010218756A (en) * 2009-03-13 2010-09-30 Hitachi Maxell Ltd Nonaqueous electrolyte battery, and nonaqueous electrolyte battery module

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090047924A (en) * 2007-11-09 2009-05-13 주식회사 엘지화학 Battery cell having improved thermal stability and middle or large-sized battery module employed with the same
KR20100071844A (en) * 2008-12-19 2010-06-29 엘에스산전 주식회사 On-off device of circuit breaker
JP2010218756A (en) * 2009-03-13 2010-09-30 Hitachi Maxell Ltd Nonaqueous electrolyte battery, and nonaqueous electrolyte battery module

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106159150A (en) * 2016-08-30 2016-11-23 王春阳 Soft-package battery management container

Also Published As

Publication number Publication date
WO2013005959A3 (en) 2013-02-28
KR20130005528A (en) 2013-01-16

Similar Documents

Publication Publication Date Title
EP2410594B1 (en) Rechargeable battery
WO2018009039A1 (en) Cell module assembly having improved safety and pack structure therefor
WO2014137112A1 (en) Battery cell comprising stepped structure
WO2017217641A1 (en) Battery module, and battery pack and vehicle comprising same
WO2012086855A1 (en) Lithium secondary battery having multi-directional lead-tab structure
WO2019074193A1 (en) Cylindrical secondary battery module and method for producing cylindrical secondary battery module
WO2016032092A1 (en) Battery module
WO2014054888A2 (en) Battery pack
WO2018093038A1 (en) Battery module, and battery pack comprising same
WO2015141920A1 (en) Battery cell having asymmetric and indented structure
WO2014126358A1 (en) Battery cell comprising electrode assembly having alternating alignment structure
WO2013005959A2 (en) Secondary battery
WO2015046798A1 (en) Battery module comprising temperature sensor
WO2019098522A1 (en) Pouch-type secondary battery having unsealed portion
WO2014185566A1 (en) Battery module assembly having novel structure
WO2012044035A2 (en) Electrode lead comprising a corrosion-preventing protective layer, and a rechargeable battery comprising the same
WO2012177034A2 (en) Battery
WO2014014285A1 (en) Secondary battery module comprising cell damper
WO2017217643A2 (en) Battery module, and battery pack and vehicle comprising same
WO2013065942A1 (en) Battery cell and battery module including the same
WO2011046261A1 (en) Cap assembly for preventing gasket sag, and cylindrical secondary battery having the same
WO2014003361A1 (en) Easily assembled all-in-one secondary battery module
WO2015056973A1 (en) Pouch-type secondary battery and secondary battery module comprising same
WO2013118972A1 (en) Battery cell
WO2016039503A1 (en) Secondary battery provided with overcurrent blocking means

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12807519

Country of ref document: EP

Kind code of ref document: A2

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12807519

Country of ref document: EP

Kind code of ref document: A2