WO2018056628A1 - Secondary battery - Google Patents
Secondary battery Download PDFInfo
- Publication number
- WO2018056628A1 WO2018056628A1 PCT/KR2017/010041 KR2017010041W WO2018056628A1 WO 2018056628 A1 WO2018056628 A1 WO 2018056628A1 KR 2017010041 W KR2017010041 W KR 2017010041W WO 2018056628 A1 WO2018056628 A1 WO 2018056628A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- case
- cap
- insulating
- auxiliary
- secondary battery
- Prior art date
Links
- 238000009413 insulation Methods 0.000 claims description 39
- 239000012212 insulator Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 8
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 239000003792 electrolyte Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000015110 jellies Nutrition 0.000 description 1
- 239000008274 jelly Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- 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
- H01M50/591—Covers
-
- 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
-
- 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
- H01M50/116—Primary casings; Jackets or wrappings characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—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
- H01M50/147—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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/147—Lids or covers
- H01M50/155—Lids or covers characterised by the material
- H01M50/157—Inorganic material
- H01M50/159—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
- H01M50/183—Sealing members
-
- 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
- H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present disclosure relates to a secondary battery, and more particularly, to a secondary battery including an insulating structure of a cap plate.
- a high output secondary battery using a high energy density nonaqueous electrolyte has been developed.
- Low-capacity secondary batteries are mainly used for power supply of portable small electronic devices, and large-capacity secondary batteries in which a plurality of secondary batteries are connected in series are used for driving motors of electric or hybrid vehicles or power storage devices of renewable energy facilities. It is used for.
- the secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to the case to seal the electrode assembly and the electrolyte, and two terminals fixed to the cap plate.
- the case and the cap plate are energized with any one of the positive electrode and the negative electrode constituting the electrode assembly, and the surface of the secondary battery except the electrode terminal is covered with an insulating material.
- the insulating material prevents the internal current of the secondary battery from leaking out and blocks the energization between neighboring secondary batteries when a plurality of secondary batteries are collected to form a battery module.
- One aspect of the present invention is to provide a secondary battery that can improve the insulating properties by improving the insulating structure of the cap plate.
- a secondary battery includes an electrode assembly, a case accommodating the electrode assembly, an opening formed at one side thereof, a cap plate exposing an opening end of the case, and coupled to an inside of the case to seal the electrode assembly; And a first insulating tape including a cap insulating portion covering an outer surface of the cap plate and an auxiliary insulating portion covering an opening end of the case.
- the secondary battery may further include a second insulating tape covering the outer surface of the case, and a portion of the auxiliary insulating portion may overlap the second insulating tape on the outer surface of the case.
- the cap insulator may include four sides, and the auxiliary insulator may be divided into four and connected to one of four sides of the cap insulator. Each of the four auxiliary insulators can be folded into a depression from the cap insulator and attached to the opening side end of the case.
- Each of the four auxiliary insulators has a first portion folded from the cap insulation and attached to the inner surface of the case, a second portion folded from the first portion and attached to the end surface of the case, and folded from the second portion. It may include a third portion attached to the outer surface of the.
- the cap plate may be provided with first and second terminals, a sealing stopper, and a vent plate, and the cap insulation may form a plurality of openings that expose the first and second terminals, the sealing stopper, and the vent plate.
- the first terminal and the second terminal may face each other along the first direction, and the four auxiliary insulation parts may face each other along the first direction with the first and second terminals interposed therebetween. And the remaining third and fourth auxiliary insulators.
- the cap insulation portion may further include a protrusion part of which overlaps and is attached to each other and protrudes outward of the cap plate.
- the protrusion may be formed in parallel with a second direction crossing the first direction between the first auxiliary insulation and the first terminal and between the second auxiliary insulation and the second terminal.
- Each of the third and fourth auxiliary insulation portions may form cutouts on both sides of the protrusion.
- the insulation safety distance between the external metal frame and the secondary battery can be increased, and as a result, the insulation characteristics of the secondary battery can be improved.
- FIG. 1 is a perspective view of a rechargeable battery according to a first exemplary embodiment of the present invention.
- FIG. 2 is an exploded perspective view of the secondary battery illustrated in FIG. 1.
- FIG. 3 is a cross-sectional view of a rechargeable battery cut along the line III-III of FIG. 1.
- FIG. 4 is a partially enlarged view of FIG. 3.
- FIG 5 is a partial cross-sectional view of a battery module including a secondary battery of the first embodiment.
- FIG. 6 is a partial cross-sectional view of a battery module provided with a secondary battery of a comparative example.
- FIG. 7 is a partially enlarged cross-sectional view of a rechargeable battery according to a second exemplary embodiment of the present invention.
- FIG. 8 is a perspective view of a first insulating tape of the secondary battery illustrated in FIG. 7.
- FIG. 1 is a perspective view of a rechargeable battery according to a first exemplary embodiment of the present invention
- FIG. 2 is an exploded perspective view of the rechargeable battery illustrated in FIG. 1
- FIG. 3 is a cutaway view taken along line III-III of FIG. 1. It is sectional drawing
- FIG. 4 is a partial enlarged view of FIG.
- the secondary battery 100 of the first embodiment exposes an electrode assembly 110, a case 120 accommodating the electrode assembly 110, and an opening end of the case 120. And a cap plate 130 coupled to the inside of the case 120, a first insulating tape 140 covering the outer surface of the cap plate 130 and the opening side end of the case 120, and an outer surface of the case 120. It includes a second insulating tape 150 covering the.
- the electrode assembly 110 includes a separator 113 and a first electrode 111 and a second electrode 112 positioned with the separator 113 interposed therebetween.
- One of the first electrode 111 and the second electrode 112 is an anode, and the other is a cathode.
- Each of the first and second electrodes 111 and 112 includes a current collector made of a thin metal foil and an active material coated on the current collector surface.
- Each of the first and second electrodes 111 and 112 may be divided into coating portions 111a and 112a coated with an active material on a current collector and non-coated portions 111b and 112b without an active material coated on a current collector.
- the uncoated portion 111b of the first electrode 111 is positioned at one side of the electrode assembly 110, and the uncoated portion 112b of the second electrode 112 is positioned at the other side of the electrode assembly 110.
- the first and second electrodes 111 and 112 and the separator 113 may be wound in the form of a jelly roll to form the electrode assembly 110.
- the case 120 may have a substantially rectangular parallelepiped shape and form an opening at one side.
- the cap plate 130 exposes the open end of the case 120 and is fixed to the inside of the case 120 to seal the electrode assembly 110.
- the case 120 and the cap plate 130 may be made of metal such as aluminum, and the cap plate 130 may be fixed to the case 120 by welding.
- the cap plate 130 is provided with an electrolyte injection hole 131 for injecting electrolyte into the sealed case 120, and after the electrolyte injection, the electrolyte injection hole 131 is sealed with a sealing stopper 132.
- a vent hole 133 is formed in the cap plate 130, and a vent plate 134 is installed in the vent hole 133.
- the vent plate 134 is broken when the internal pressure of the sealed case 120 is greater than or equal to the set pressure to open the vent hole 133.
- the vent plate 134 may have a notch 135 that induces an incision.
- the first terminal 160 and the second terminal 170 are installed in the terminal holes H1 and H2 of the cap plate 130.
- the first and second terminals 160 and 170 respectively extend laterally from the rivet terminals 161 and 171 passing through the cap plate 130 and the rivet terminals 161 and 171 inside the cap plate 130.
- the flanges 162 and 172 and plate terminals 163 and 173 disposed outside the cap plate 130 and connected to the rivet terminals 161 and 171 by riveting or welding may be included.
- the first and second gaskets 164 and 174 are installed between the rivet terminals 161 and 171 of the first and second terminals 160 and 170 and the inner walls of the terminal holes H1 and H2, respectively. , 171 and the cap plate 130 are sealed and insulated. The first and second gaskets 164 and 174 prevent leakage of the electrolyte through the terminal holes H1 and H2.
- the first lead tab 181 is installed at one side of the electrode assembly 110 in the case 120, and the second lead tab 182 is installed at the other side of the electrode assembly 110.
- the first lead tab 181 is in contact with the uncoated portion 111b of the first electrode 111, and the second lead tab 182 is in contact with the uncoated portion 112b of the second electrode 112.
- the first and second lead tabs 181, 182 are coupled to the lower side of the rivet terminals 161, 171 while contacting the flanges 162, 172.
- the first and second terminals 160 and 170 are energized with the first and second electrodes 111 and 112 by the first and second lead tabs 181 and 182, respectively.
- the first and second insulating members 191 and 192 are installed between the first and second lead tabs 181 and 182 and the cap plate 130, respectively, to form the first and second lead tabs 181 and 182. Insulate the cap plate 130.
- the first and second insulating members 191 and 192 are in contact with the cap plate 130, the flanges 162 and 172, the lower side of the rivet terminals 161 and 171, and the upper side of the lead tabs 181 and 182. Stabilize the connection structure.
- the first and second top plates 165 and 175 are positioned outside the cap plate 130.
- the first and second top plates 165 and 175 are positioned between the plate terminals 163 and 173 of the first and second terminals 160 and 170 and the cap plate 130, respectively.
- the first top plate 165 may be formed of an insulating material to insulate the first terminal 160 from the cap plate 130
- the second top plate 175 may be formed of a conductive material to form the second terminal 170.
- the cap plate 130 may be energized.
- the case 120 and the cap plate 130 are energized with the second electrode 112 and the second terminal 170.
- Each of the first and second insulating tapes 140 and 150 covers the outer surface of the cap plate 130 and the outer surface of the case 120 so that the current of the secondary battery 100 does not leak out, and the plurality of secondary batteries 100 ) To form a battery module (not shown) to block the energization between neighboring secondary batteries 100.
- the first and second insulating tapes 140 and 150 are formed of an insulating layer and an adhesive layer applied to one surface of the insulating layer.
- the first insulating tape 140 includes a cap insulating portion 141 covering an outer surface of the cap plate 130 and an auxiliary insulating portion 142 covering an opening side end portion of the case 120.
- the auxiliary insulating part 142 covers a part of the inner surface 121 of the case 120, an entire end surface 122, and a part of the outer surface 123 at the opening side end of the case 120.
- the auxiliary insulator 142 is integrally connected to the cap insulator 141 and is folded in a depressed shape and attached to an opening end of the case 120.
- the edge of the cap plate 130 is fixed to the inside of the case 120 at a distance from the end surface 122 of the case 120. That is, the end surface 122 of the case 120 is positioned higher than the outer surface of the cap plate 130 (located further from the electrode assembly 110). In this case, a portion of the inner surface 121 of the case 120 is exposed outside the secondary battery 100 along the opening side end portion of the case 120.
- the cap insulation part 141 covers the outer surface of the cap plate 130 while exposing the first and second terminals 160 and 170, the sealing plug 132, and the vent plate 134. That is, the cap insulation part 141 exposes the first opening 141a exposing the first and second terminals 160 and 170, and the second opening 141b exposing the electrolyte injection hole 131 and the sealing plug 132. ) And a third opening 141c exposing the vent plate 134.
- the case 120 includes four sides and one bottom surface.
- the cap plate 130 and the cap insulator 141 have four sides corresponding to four sides of the case 120, and the auxiliary insulator 142 is connected to one of the four sides of the cap insulator 141.
- the first insulation tape 140 may include a cap insulation portion 141 positioned at the center and four auxiliary insulation portions 142 connected to four sides of the cap insulation portion 141.
- Each of the four auxiliary insulation portions 142 is folded from the cap insulation portion 141 and is folded from the first portion 143 and the first portion 143 attached to the inner surface 121 of the case 120. And a second portion 144 attached to the end surface 122 of the third portion 144, and a third portion 145 folded into the second portion 144 and attached to the outer surface 123 of the case 120.
- the auxiliary insulator 142 is connected to each of the four sides of the cap insulator 141, the auxiliary insulator 142 is formed on a portion of the inner surface 121 of the case 120 at each of four sides of the case 120. The entire end surface 122 and a part of the outer surface 123 may be effectively covered.
- the second insulating tape 150 surrounds all five sides of the case 120.
- the second insulating tape 150 may include, for example, a fourth portion 151 corresponding to one side of the case 120, and fifth and sixth portions 152 and 153 connected to both sides of the fourth portion 151. And seventh and eighth portions 154 and 155 connected to one side of the fifth and sixth portions 152 and 153, and a ninth portion 156 connected to the lower side of the fourth portion 151, respectively.
- the fifth portion 152 and the sixth portion 153 are folded to the other two sides of the case 120.
- the seventh portion 154 and the eighth portion 155 may then be folded and attached to the other side of the case 120.
- a portion of the seventh portion 154 and the eighth portion 155 may overlap each other.
- the ninth portion 156 may be folded and attached to the bottom surface of the case 120.
- the shape of the second insulating tape 150 and the attachment method to the case 120 are not limited to the above-described example and may be variously changed.
- the third portion 145 of the first insulating tape 140 overlaps the second insulating tape 150.
- the third portion 145 of the first insulating tape 140 covers the second insulating tape 150. (See Figure 4).
- the second insulating tape 150 is formed of the first insulating tape 140. Cover the third portion 145.
- the entire surface of the rechargeable battery 100 except for the first and second terminals 160 and 170, the sealing plug 132, and the vent plate 134 is formed of the first and second insulating tapes 140 and 150. Covered with At this time, the first insulating tape 140 is folded in a recessed shape at the opening side end of the case 120 to cover a part of the inner surface 121 of the case 120, the entire end surface 122, and a part of the outer surface 123. 142).
- the large capacity battery module is composed of a plurality of secondary batteries 100.
- the plurality of secondary batteries 100 may be connected in parallel, and the plurality of secondary batteries 100 connected in parallel may be connected in series to form a large capacity battery module.
- FIG. 5 is a partial cross-sectional view of a battery module including the secondary battery of the first embodiment
- FIG. 6 is a partial cross-sectional view of the battery module including the secondary battery of the comparative example.
- the secondary battery of the comparative example has the same configuration as that of the secondary battery of the first embodiment except that the first insulating tape 240 does not include an auxiliary insulating portion.
- the first insulating tape 140 may include an auxiliary insulating part 142, and the auxiliary insulating part 142 may have an inner surface 121 of the case 120 along an opening end of the case 120. It covers a part and the whole of the cross section 122 and a part of the outer surface 123.
- the second insulating tape 150 surrounds the entire outer surface of the case 120.
- the outer metal frame 200 of the battery module is located outside the side surface of the case 120 of the secondary battery 100.
- the surface current of the secondary battery 100 affects insulation characteristics. After module assembly, the insulation creepage distance between the outer metal frame 200 and the secondary battery 100 becomes a surface path from the outer metal frame 200 to the conductive member exposed to the outside of the secondary battery 100.
- the insulation safety distance (shown by the arrow path A) is approximately the width of the second portion 144 and the width of the first portion 143 and the first portion 143. It may be expressed as the sum of the distances between the first terminals 160.
- the first insulating tape 240 of the comparative example covers the outer surface of the cap plate 130.
- a part of the inner surface 121 of the case 120 is exposed at the opening side end of the case 120, and in the process of attaching the first insulating tape 240 over the cap plate 130, the cap plate ( A portion of the edge of 130 may be exposed to the outside.
- the insulation safety distance (shown by the arrow path B) may be expressed as the sum of the width of the cross section 122 and the width of a portion of the inner surface 121 of the case 120 exposed to the outside.
- the auxiliary insulation part 142 is formed on the first insulating tape 140, the external metal frame 200 and the secondary metal frame 200 are formed in the large capacity battery module.
- the insulation safety distance between the cells 100 can be effectively increased, and as a result, insulation properties can be improved as compared with the secondary battery of the comparative example.
- FIG. 7 is a partially enlarged cross-sectional view of a rechargeable battery according to a second exemplary embodiment of the present invention
- FIG. 8 is a perspective view of a first insulating tape of the rechargeable battery illustrated in FIG. 7.
- the first insulating tape 340 includes a protrusion 146 formed on the cap insulating portion 141.
- the protruding portion 146 is a portion of the cap insulation portion 141 overlapping two layers and attached to each other, and protruding to the outside of the cap plate 130 without covering the outer surface of the cap plate 130.
- the first terminal 160 and the second terminal 170 face each other along the first direction.
- the auxiliary insulator 142 may include the first and second auxiliary insulators 142a and 142b facing each other along the first direction with the first and second terminals 160 and 170 interposed therebetween, and the remaining third and the second and insulator portions 142a and 142b. 4 auxiliary insulating parts 142c and 142d.
- the two protrusions 146 are positioned between the first auxiliary insulation 142a and the first terminal 160 and between the second auxiliary insulation 142b and the second terminal 170 and intersect with the first direction. It is formed parallel to the second direction.
- the protruding portion 146 is added to the cap insulation portion 141, and because the extra insulation is made by folding two layers, the auxiliary insulation is not connected to both sides of the protruding portion 146. That is, the third and fourth auxiliary insulating parts 142c and 142d form cutouts 147 on both sides of the protrusion 146, and the third and fourth auxiliary insulating parts 142c and 142c are formed by the cutouts 147. 142d) Each is divided into three parts.
- the protrusion 146 is a portion in which a part of the cap insulation portion 141 is overlapped in two layers, an insulation safety distance (shown by a C arrow path) between the external metal frame 200 and the secondary battery 100a is determined as described above.
- the protrusion 146 is twice as wide as in the first embodiment. Accordingly, the secondary battery 100a of the second embodiment may further improve insulation characteristics by increasing the insulation safety distance due to the protrusion 146.
- the rest of the configuration except for the protrusion 146 is the same as in the above-described first embodiment, and thus redundant description thereof will be omitted.
- first insulating tape 141 cap insulating portion
- auxiliary insulating portion 150 second insulating tape
- first insulating member 192 second insulating member
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
A secondary battery according to an embodiment of the present invention comprises: an electrode assembly; a case accommodating the electrode assembly and having an opening formed at one side thereof; a cap plate which exposes an opening side end portion of the case and is coupled to the inside of the case to seal the electrode assembly; and a first insulating tape including a cap insulating portion covering an outer surface of the cap plate and an auxiliary insulating portion covering the opening side end portion of the case.
Description
본 기재는 이차 전지에 관한 것으로서, 보다 상세하게는 캡 플레이트의 절연 구조를 포함하는 이차 전지에 관한 것이다.The present disclosure relates to a secondary battery, and more particularly, to a secondary battery including an insulating structure of a cap plate.
고에너지 밀도의 비수 전해액을 이용한 고출력 이차 전지가 개발되고 있다. 저용량의 이차 전지는 휴대 가능한 소형 전자 기기의 전원에 주로 사용되고 있고, 복수의 이차 전지를 직렬로 연결한 대용량의 이차 전지는 전기 자동차 또는 하이브리드 자동차의 모터 구동용 전원 또는 신재생 에너지 설비의 전력 저장 장치 등에 사용되고 있다.A high output secondary battery using a high energy density nonaqueous electrolyte has been developed. Low-capacity secondary batteries are mainly used for power supply of portable small electronic devices, and large-capacity secondary batteries in which a plurality of secondary batteries are connected in series are used for driving motors of electric or hybrid vehicles or power storage devices of renewable energy facilities. It is used for.
이차 전지는 전극 조립체와, 전극 조립체를 수용하는 케이스와, 케이스에 결합되어 전극 조립체와 전해액을 밀봉하는 캡 플레이트와, 캡 플레이트에 고정된 두 개의 단자를 포함한다.The secondary battery includes an electrode assembly, a case accommodating the electrode assembly, a cap plate coupled to the case to seal the electrode assembly and the electrolyte, and two terminals fixed to the cap plate.
케이스와 캡 플레이트는 전극 조립체를 구성하는 양극과 음극 중 어느 하나와 통전되며, 전극 단자를 제외한 이차 전지의 표면은 절연 물질로 덮인다. 절연 물질은 이차 전지의 내부 전류가 밖으로 누설되지 않도록 하고, 복수의 이차 전지가 모여 전지 모듈을 구성할 때 이웃한 이차 전지들 사이의 통전을 차단한다.The case and the cap plate are energized with any one of the positive electrode and the negative electrode constituting the electrode assembly, and the surface of the secondary battery except the electrode terminal is covered with an insulating material. The insulating material prevents the internal current of the secondary battery from leaking out and blocks the energization between neighboring secondary batteries when a plurality of secondary batteries are collected to form a battery module.
본 발명의 일 측면은 캡 플레이트의 절연 구조를 개선하여 절연 특성을 향상시킬 수 있는 이차 전지를 제공하고자 한다.One aspect of the present invention is to provide a secondary battery that can improve the insulating properties by improving the insulating structure of the cap plate.
본 발명의 일 실시예에 따른 이차 전지는 전극 조립체와, 전극 조립체를 수용하며 일측에 개구가 형성된 케이스와, 케이스의 개구측 단부를 노출시키며 케이스의 내측에 결합되어 전극 조립체를 밀봉하는 캡 플레이트와, 캡 플레이트의 외면을 덮는 캡 절연부 및 케이스의 개구측 단부를 덮는 보조 절연부를 포함하는 제1 절연 테이프를 포함한다.According to an embodiment of the present invention, a secondary battery includes an electrode assembly, a case accommodating the electrode assembly, an opening formed at one side thereof, a cap plate exposing an opening end of the case, and coupled to an inside of the case to seal the electrode assembly; And a first insulating tape including a cap insulating portion covering an outer surface of the cap plate and an auxiliary insulating portion covering an opening end of the case.
이차 전지는 케이스의 외면을 덮는 제2 절연 테이프를 더 포함할 수 있고, 케이스의 외면에서 보조 절연부의 일부는 제2 절연 테이프와 중첩될 수 있다.The secondary battery may further include a second insulating tape covering the outer surface of the case, and a portion of the auxiliary insulating portion may overlap the second insulating tape on the outer surface of the case.
캡 절연부는 네 개의 변을 포함할 수 있고, 보조 절연부는 네 개로 분리되어 캡 절연부의 네 변에 하나씩 연결 형성될 수 있다. 네 개의 보조 절연부 각각은 캡 절연부로부터 디귿자 모양으로 접혀 케이스의 개구측 단부에 부착될 수 있다.The cap insulator may include four sides, and the auxiliary insulator may be divided into four and connected to one of four sides of the cap insulator. Each of the four auxiliary insulators can be folded into a depression from the cap insulator and attached to the opening side end of the case.
네 개의 보조 절연부 각각은, 캡 절연부로부터 접혀 케이스의 내면에 부착되는 제1 부분과, 제1 부분으로부터 접혀 케이스의 단면(end surface)에 부착되는 제2 부분과, 제2 부분으로부터 접혀 케이스의 외면에 부착되는 제3 부분을 포함할 수 있다.Each of the four auxiliary insulators has a first portion folded from the cap insulation and attached to the inner surface of the case, a second portion folded from the first portion and attached to the end surface of the case, and folded from the second portion. It may include a third portion attached to the outer surface of the.
캡 플레이트에는 제1 및 제2 단자, 밀봉 마개, 및 벤트 플레이트가 설치될 수 있으며, 캡 절연부는 제1 및 제2 단자, 밀봉 마개, 및 벤트 플레이트를 노출시키는 복수의 개구부를 형성할 수 있다.The cap plate may be provided with first and second terminals, a sealing stopper, and a vent plate, and the cap insulation may form a plurality of openings that expose the first and second terminals, the sealing stopper, and the vent plate.
제1 단자와 제2 단자는 제1 방향을 따라 서로 마주할 수 있고, 네 개의 보조 절연부는 제1 및 제2 단자를 사이에 두고 제1 방향을 따라 서로 마주하는 제1 및 제2 보조 절연부와, 나머지 제3 및 제4 보조 절연부를 포함할 수 있다.The first terminal and the second terminal may face each other along the first direction, and the four auxiliary insulation parts may face each other along the first direction with the first and second terminals interposed therebetween. And the remaining third and fourth auxiliary insulators.
캡 절연부는, 그 일부가 두겹으로 중첩되어 서로 부착되며 캡 플레이트의 외측으로 돌출된 돌출부를 더 포함할 수 있다. 돌출부는 제1 보조 절연부와 제1 단자 사이 및 제2 보조 절연부와 제2 단자 사이에서 제1 방향과 교차하는 제2 방향과 나란하게 형성될 수 있다. 제3 및 제4 보조 절연부 각각은 돌출부의 양측에 절개부를 형성할 수 있다.The cap insulation portion may further include a protrusion part of which overlaps and is attached to each other and protrudes outward of the cap plate. The protrusion may be formed in parallel with a second direction crossing the first direction between the first auxiliary insulation and the first terminal and between the second auxiliary insulation and the second terminal. Each of the third and fourth auxiliary insulation portions may form cutouts on both sides of the protrusion.
본 실시예의 이차 전지에 따르면, 제1 절연 테이프에 보조 절연부를 형성함에 따라, 외부 금속 프레임과 이차 전지 사이의 절연 안전 거리를 늘릴 수 있으며, 그 결과 이차 전지의 절연 특성을 향상시킬 수 있다.According to the secondary battery of the present embodiment, by forming the auxiliary insulation on the first insulating tape, the insulation safety distance between the external metal frame and the secondary battery can be increased, and as a result, the insulation characteristics of the secondary battery can be improved.
도 1은 본 발명의 제1 실시예에 따른 이차 전지의 사시도이다.1 is a perspective view of a rechargeable battery according to a first exemplary embodiment of the present invention.
도 2는 도 1에 도시한 이차 전지의 분해 사시도이다.FIG. 2 is an exploded perspective view of the secondary battery illustrated in FIG. 1.
도 3은 도 1의 Ⅲ-Ⅲ선을 따라 절개한 이차 전지의 단면도이다.3 is a cross-sectional view of a rechargeable battery cut along the line III-III of FIG. 1.
도 4는 도 3의 부분 확대도이다.4 is a partially enlarged view of FIG. 3.
도 5는 제1 실시예의 이차 전지를 구비한 전지 모듈의 부분 단면도이다.5 is a partial cross-sectional view of a battery module including a secondary battery of the first embodiment.
도 6은 비교예의 이차 전지를 구비한 전지 모듈의 부분 단면도이다.6 is a partial cross-sectional view of a battery module provided with a secondary battery of a comparative example.
도 7은 본 발명의 제2 실시예에 따른 이차 전지의 부분 확대 단면도이다.7 is a partially enlarged cross-sectional view of a rechargeable battery according to a second exemplary embodiment of the present invention.
도 8은 도 7에 도시한 이차 전지 중 제1 절연 테이프의 사시도이다.FIG. 8 is a perspective view of a first insulating tape of the secondary battery illustrated in FIG. 7.
이하, 첨부한 도면을 참고로 하여 본 발명의 실시예에 대하여 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자가 용이하게 실시할 수 있도록 상세히 설명한다. 본 발명은 여러 가지 상이한 형태로 구현될 수 있으며 여기에서 설명하는 실시예에 한정되지 않는다. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention.
도면에서 본 발명을 명확하게 설명하기 위해서 설명과 관계없는 부분은 생략하였으며, 명세서 전체를 통하여 동일 또는 유사한 구성요소에 대해서는 동일한 참조부호를 붙였다.In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like elements throughout the specification.
또한, 도면에서 나타난 각 구성의 크기 및 두께는 설명의 편의를 위해 임의로 나타내었으므로, 본 발명이 반드시 도시된 바에 한정되지 않는다.In addition, since the size and thickness of each component shown in the drawings are arbitrarily shown for convenience of description, the present invention is not necessarily limited to the illustrated.
명세서 전체에서, 어떤 부분이 다른 부분과 "연결"되어 있다고 할 때, 이는 "직접적으로 연결"되어 있는 경우뿐 만 아니라, 다른 부재를 사이에 두고 "간접적으로 연결"된 것도 포함한다. 또한, 어떤 부분이 어떤 구성요소를 "포함"한다고 할 때, 이는 특별히 반대되는 기재가 없는 한 다른 구성요소를 제외하는 것이 아니라 다른 구성요소를 더 포함할 수 있는 것을 의미한다.Throughout the specification, when a part is "connected" to another part, it includes not only "directly connected", but also "indirectly connected" between other members. In addition, when a part is said to "include" a certain component, this means that it may further include other components, except to exclude other components unless otherwise stated.
도 1은 본 발명의 제1 실시예에 따른 이차 전지의 사시도이고, 도 2는 도 1에 도시한 이차 전지의 분해 사시도이며, 도 3은 도 1의 Ⅲ-Ⅲ선을 따라 절개한 이차 전지의 단면도이며, 도 4는 도 3의 부분 확대도이다.1 is a perspective view of a rechargeable battery according to a first exemplary embodiment of the present invention, FIG. 2 is an exploded perspective view of the rechargeable battery illustrated in FIG. 1, and FIG. 3 is a cutaway view taken along line III-III of FIG. 1. It is sectional drawing, and FIG. 4 is a partial enlarged view of FIG.
도 1 내지 도 4를 참고하면, 제1 실시예의 이차 전지(100)는 전극 조립체(110)와, 전극 조립체(110)를 수용하는 케이스(120)와, 케이스(120)의 개구측 단부를 노출시키며 케이스(120)의 내측에 결합된 캡 플레이트(130)와, 캡 플레이트(130)의 외면과 케이스(120)의 개구측 단부를 덮는 제1 절연 테이프(140)와, 케이스(120)의 외면을 덮는 제2 절연 테이프(150)를 포함한다.1 to 4, the secondary battery 100 of the first embodiment exposes an electrode assembly 110, a case 120 accommodating the electrode assembly 110, and an opening end of the case 120. And a cap plate 130 coupled to the inside of the case 120, a first insulating tape 140 covering the outer surface of the cap plate 130 and the opening side end of the case 120, and an outer surface of the case 120. It includes a second insulating tape 150 covering the.
전극 조립체(110)는 세퍼레이터(113)와, 세퍼레이터(113)를 사이에 두고 위치하는 제1 전극(111)과 제2 전극(112)을 포함한다. 제1 전극(111)과 제2 전극(112) 중 어느 하나는 양극이고, 다른 하나는 음극이다. 제1 및 제2 전극(111, 112) 각각은 박판의 금속 포일로 이루어진 집전체와, 집전체 표면에 코팅된 활물질을 포함한다.The electrode assembly 110 includes a separator 113 and a first electrode 111 and a second electrode 112 positioned with the separator 113 interposed therebetween. One of the first electrode 111 and the second electrode 112 is an anode, and the other is a cathode. Each of the first and second electrodes 111 and 112 includes a current collector made of a thin metal foil and an active material coated on the current collector surface.
제1 및 제2 전극(111, 112) 각각은 집전체에 활물질이 코팅된 코팅부(111a, 112a)와, 집전체에 활물질이 코팅되지 않은 무지부(111b, 112b)로 구획될 수 있다. 제1 전극(111)의 무지부(111b)는 전극 조립체(110)의 일측에 위치하고, 제2 전극(112)의 무지부(112b)는 전극 조립체(110)의 타측에 위치한다. 제1 및 제2 전극(111, 112)과 세퍼레이터(113)는 젤리롤 형태로 권취되어 전극 조립체(110)를 이룰 수 있다.Each of the first and second electrodes 111 and 112 may be divided into coating portions 111a and 112a coated with an active material on a current collector and non-coated portions 111b and 112b without an active material coated on a current collector. The uncoated portion 111b of the first electrode 111 is positioned at one side of the electrode assembly 110, and the uncoated portion 112b of the second electrode 112 is positioned at the other side of the electrode assembly 110. The first and second electrodes 111 and 112 and the separator 113 may be wound in the form of a jelly roll to form the electrode assembly 110.
케이스(120)는 대략 직육면체 형상일 수 있으며, 일측에 개구를 형성한다. 캡 플레이트(130)는 케이스(120)의 개구측 단부를 노출시키며 케이스(120)의 내측에 고정되어 전극 조립체(110)를 밀봉시킨다. 케이스(120)와 캡 플레이트(130)는 알루미늄 등의 금속으로 제작될 수 있고, 캡 플레이트(130)는 케이스(120)에 용접으로 고정될 수 있다.The case 120 may have a substantially rectangular parallelepiped shape and form an opening at one side. The cap plate 130 exposes the open end of the case 120 and is fixed to the inside of the case 120 to seal the electrode assembly 110. The case 120 and the cap plate 130 may be made of metal such as aluminum, and the cap plate 130 may be fixed to the case 120 by welding.
캡 플레이트(130)에는 밀폐된 케이스(120) 내부로 전해액을 주입하기 위한 전해액 주입구(131)가 형성되고, 전해액 주입 후 전해액 주입구(131)는 밀봉 마개(132)로 밀봉된다. 캡 플레이트(130)에는 벤트 홀(133)이 형성되고, 벤트 홀(133)에 벤트 플레이트(134)가 설치된다. 벤트 플레이트(134)는 밀폐된 케이스(120)의 내부 압력이 설정된 압력 이상일 때 파단되어 벤트 홀(133)을 개방한다. 벤트 플레이트(134)는 절개를 유도하는 노치(135)를 가질 수 있다.The cap plate 130 is provided with an electrolyte injection hole 131 for injecting electrolyte into the sealed case 120, and after the electrolyte injection, the electrolyte injection hole 131 is sealed with a sealing stopper 132. A vent hole 133 is formed in the cap plate 130, and a vent plate 134 is installed in the vent hole 133. The vent plate 134 is broken when the internal pressure of the sealed case 120 is greater than or equal to the set pressure to open the vent hole 133. The vent plate 134 may have a notch 135 that induces an incision.
캡 플레이트(130)의 단자 홀(H1, H2)에 제1 단자(160)와 제2 단자(170)가 설치된다. 제1 및 제2 단자(160, 170)는 각각 캡 플레이트(130)를 관통하는 리벳 터미널(161, 171)과, 캡 플레이트(130)의 내측에서 리벳 터미널(161, 171)로부터 옆으로 확장된 플랜지(162, 172)와, 캡 플레이트(130)의 외측에 배치되며 리벳 터미널(161, 171)에 리벳팅 또는 용접으로 연결된 플레이트 터미널(163, 173)을 포함할 수 있다.The first terminal 160 and the second terminal 170 are installed in the terminal holes H1 and H2 of the cap plate 130. The first and second terminals 160 and 170 respectively extend laterally from the rivet terminals 161 and 171 passing through the cap plate 130 and the rivet terminals 161 and 171 inside the cap plate 130. The flanges 162 and 172 and plate terminals 163 and 173 disposed outside the cap plate 130 and connected to the rivet terminals 161 and 171 by riveting or welding may be included.
제1 및 제2 개스킷(164, 174)은 제1 및 제2 단자(160, 170)의 리벳 터미널(161, 171)과 단자 홀(H1. H2)의 내벽 사이에 각각 설치되어 리벳 터미널(161, 171)과 캡 플레이트(130) 사이를 밀봉 및 절연시킨다. 제1 및 제2 개스킷(164, 174)은 단자 홀(H1, H2)을 통한 전해액의 누설을 방지한다.The first and second gaskets 164 and 174 are installed between the rivet terminals 161 and 171 of the first and second terminals 160 and 170 and the inner walls of the terminal holes H1 and H2, respectively. , 171 and the cap plate 130 are sealed and insulated. The first and second gaskets 164 and 174 prevent leakage of the electrolyte through the terminal holes H1 and H2.
케이스(120) 내부에서 전극 조립체(110)의 일측에 제1 리드 탭(181)이 설치되고, 전극 조립체(110)의 타측에 제2 리드 탭(182)이 설치된다. 제1 리드 탭(181)은 제1 전극(111)의 무지부(111b)와 접하며, 제2 리드 탭(182)은 제2 전극(112)의 무지부(112b)와 접한다.The first lead tab 181 is installed at one side of the electrode assembly 110 in the case 120, and the second lead tab 182 is installed at the other side of the electrode assembly 110. The first lead tab 181 is in contact with the uncoated portion 111b of the first electrode 111, and the second lead tab 182 is in contact with the uncoated portion 112b of the second electrode 112.
제1 및 제2 리드 탭(181, 182)은 플랜지(162, 172)와 접하면서 리벳 터미널(161, 171)의 하측에 결합된다. 제1 및 제2 단자(160, 170)는 각각 제1 및 제2 리드 탭(181, 182)에 의해 제1 및 제2 전극(111, 112)과 통전된다.The first and second lead tabs 181, 182 are coupled to the lower side of the rivet terminals 161, 171 while contacting the flanges 162, 172. The first and second terminals 160 and 170 are energized with the first and second electrodes 111 and 112 by the first and second lead tabs 181 and 182, respectively.
제1 및 제2 절연 부재(191, 192)는 제1 및 제2 리드 탭(181, 182)과 캡 플레이트(130) 사이에 각각 설치되어, 제1 및 제2 리드 탭(181, 182)과 캡 플레이트(130)를 절연시킨다. 제1 및 제2 절연 부재(191, 192)는 캡 플레이트(130), 플랜지(162, 172), 리벳 터미널(161, 171)의 하측, 및 리드 탭(181, 182)의 상측과 접하여 이들의 연결 구조를 안정시킨다.The first and second insulating members 191 and 192 are installed between the first and second lead tabs 181 and 182 and the cap plate 130, respectively, to form the first and second lead tabs 181 and 182. Insulate the cap plate 130. The first and second insulating members 191 and 192 are in contact with the cap plate 130, the flanges 162 and 172, the lower side of the rivet terminals 161 and 171, and the upper side of the lead tabs 181 and 182. Stabilize the connection structure.
캡 플레이트(130)의 외측에 제1 및 제2 탑 플레이트(165, 175)가 위치한다. 제1 및 제2 탑 플레이트(165, 175)는 제1 및 제2 단자(160, 170)의 플레이트 터미널(163, 173)과 캡 플레이트(130) 사이에 각각 위치한다. 제1 탑 플레이트(165)는 절연 물질로 형성되어 제1 단자(160)와 캡 플레이트(130)를 절연시킬 수 있고, 제2 탑 플레이트(175)는 도전 물질로 형성되어 제2 단자(170)와 캡 플레이트(130)를 통전시킬 수 있다.The first and second top plates 165 and 175 are positioned outside the cap plate 130. The first and second top plates 165 and 175 are positioned between the plate terminals 163 and 173 of the first and second terminals 160 and 170 and the cap plate 130, respectively. The first top plate 165 may be formed of an insulating material to insulate the first terminal 160 from the cap plate 130, and the second top plate 175 may be formed of a conductive material to form the second terminal 170. And the cap plate 130 may be energized.
전술한 이차 전지(100)에서 케이스(120)와 캡 플레이트(130)는 제2 전극(112) 및 제2 단자(170)와 통전된다.In the above-described secondary battery 100, the case 120 and the cap plate 130 are energized with the second electrode 112 and the second terminal 170.
제1 및 제2 절연 테이프(140, 150) 각각은 캡 플레이트(130)의 외면과 케이스(120)의 외면을 덮어 이차 전지(100)의 전류가 밖으로 누설되지 않도록 하며, 복수의 이차 전지(100)가 모여 전지 모듈(도시하지 않음)을 구성할 때 이웃한 이차 전지들(100) 사이의 통전을 차단한다. 제1 및 제2 절연 테이프(140, 150)는 절연층과, 절연층의 일면에 도포된 접착층으로 이루어진다.Each of the first and second insulating tapes 140 and 150 covers the outer surface of the cap plate 130 and the outer surface of the case 120 so that the current of the secondary battery 100 does not leak out, and the plurality of secondary batteries 100 ) To form a battery module (not shown) to block the energization between neighboring secondary batteries 100. The first and second insulating tapes 140 and 150 are formed of an insulating layer and an adhesive layer applied to one surface of the insulating layer.
제1 절연 테이프(140)는 캡 플레이트(130)의 외면을 덮는 캡 절연부(141)와, 케이스(120)의 개구측 단부를 덮는 보조 절연부(142)를 포함한다.The first insulating tape 140 includes a cap insulating portion 141 covering an outer surface of the cap plate 130 and an auxiliary insulating portion 142 covering an opening side end portion of the case 120.
보조 절연부(142)는 케이스(120)의 개구측 단부에서 케이스(120)의 내면(121) 일부와 단면(end surface)(122) 전체 및 외면(123) 일부를 덮는다. 보조 절연부(142)는 캡 절연부(141)와 일체로 연결되며, 디귿자 모양으로 접혀 케이스(120)의 개구측 단부에 부착된다.The auxiliary insulating part 142 covers a part of the inner surface 121 of the case 120, an entire end surface 122, and a part of the outer surface 123 at the opening side end of the case 120. The auxiliary insulator 142 is integrally connected to the cap insulator 141 and is folded in a depressed shape and attached to an opening end of the case 120.
캡 플레이트(130)의 가장자리는 케이스(120)의 단면(122)과 거리를 두고 케이스(120)의 내측에 고정된다. 즉, 케이스(120)의 단면(122)이 캡 플레이트(130)의 외면보다 높게 위치(전극 조립체(110)로부터 더 멀리 위치)한다. 이 경우, 케이스(120)의 개구측 단부를 따라 케이스(120)의 내면(121) 일부가 이차 전지(100) 밖으로 노출된다.The edge of the cap plate 130 is fixed to the inside of the case 120 at a distance from the end surface 122 of the case 120. That is, the end surface 122 of the case 120 is positioned higher than the outer surface of the cap plate 130 (located further from the electrode assembly 110). In this case, a portion of the inner surface 121 of the case 120 is exposed outside the secondary battery 100 along the opening side end portion of the case 120.
캡 절연부(141)는 제1 및 제2 단자(160, 170)와 밀봉 마개(132) 및 벤트 플레이트(134)를 노출시키면서 캡 플레이트(130)의 외면을 덮는다. 즉, 캡 절연부(141)는 제1 및 제2 단자(160, 170)를 노출시키는 제1 개구부(141a)와, 전해액 주입구(131) 및 밀봉 마개(132)를 노출시키는 제2 개구부(141b)와, 벤트 플레이트(134)를 노출시키는 제3 개구부(141c)를 형성한다.The cap insulation part 141 covers the outer surface of the cap plate 130 while exposing the first and second terminals 160 and 170, the sealing plug 132, and the vent plate 134. That is, the cap insulation part 141 exposes the first opening 141a exposing the first and second terminals 160 and 170, and the second opening 141b exposing the electrolyte injection hole 131 and the sealing plug 132. ) And a third opening 141c exposing the vent plate 134.
케이스(120)는 네 개의 측면과 하나의 바닥면을 포함한다. 캡 플레이트(130)와 캡 절연부(141)는 케이스(120)의 네 측면에 각각 대응하는 네 개의 변을 가지며, 보조 절연부(142)는 캡 절연부(141)의 네 변에 하나씩 연결 형성될 수 있다. 예를 들어, 제1 절연 테이프(140)는 중앙에 위치하는 캡 절연부(141)와, 캡 절연부(141)의 네 변에 하나씩 연결된 네 개의 보조 절연부(142)를 포함할 수 있다.The case 120 includes four sides and one bottom surface. The cap plate 130 and the cap insulator 141 have four sides corresponding to four sides of the case 120, and the auxiliary insulator 142 is connected to one of the four sides of the cap insulator 141. Can be. For example, the first insulation tape 140 may include a cap insulation portion 141 positioned at the center and four auxiliary insulation portions 142 connected to four sides of the cap insulation portion 141.
네 개의 보조 절연부(142) 각각은 캡 절연부(141)로부터 접혀 케이스(120)의 내면(121)에 부착되는 제1 부분(143)과, 제1 부분(143)으로부터 접혀 케이스(120)의 단면(122)에 부착되는 제2 부분(144)과, 제2 부분(144)으로 접혀 케이스(120)의 외면(123)에 부착되는 제3 부분(145)을 포함한다.Each of the four auxiliary insulation portions 142 is folded from the cap insulation portion 141 and is folded from the first portion 143 and the first portion 143 attached to the inner surface 121 of the case 120. And a second portion 144 attached to the end surface 122 of the third portion 144, and a third portion 145 folded into the second portion 144 and attached to the outer surface 123 of the case 120.
캡 절연부(141)의 네 변마다 하나의 보조 절연부(142)가 연결됨에 따라, 보조 절연부(142)는 케이스(120)의 네 측면 각각에서 케이스(120)의 내면(121) 일부와 단면(122) 전체 및 외면(123) 일부를 효과적으로 덮을 수 있다.As one auxiliary insulator 142 is connected to each of the four sides of the cap insulator 141, the auxiliary insulator 142 is formed on a portion of the inner surface 121 of the case 120 at each of four sides of the case 120. The entire end surface 122 and a part of the outer surface 123 may be effectively covered.
제2 절연 테이프(150)는 케이스(120)의 다섯 면을 모두 둘러싼다. 제2 절연 테이프(150)는 예를 들어 케이스(120)의 일 측면에 대응하는 제4 부분(151)과, 제4 부분(151)의 양측에 연결된 제5 및 제6 부분(152, 153)과, 제5 및 제6 부분(152, 153)의 일측에 각각 연결된 제7 및 제8 부분(154, 155)과, 제4 부분(151)의 하측에 연결된 제9 부분(156)을 포함할 수 있다.The second insulating tape 150 surrounds all five sides of the case 120. The second insulating tape 150 may include, for example, a fourth portion 151 corresponding to one side of the case 120, and fifth and sixth portions 152 and 153 connected to both sides of the fourth portion 151. And seventh and eighth portions 154 and 155 connected to one side of the fifth and sixth portions 152 and 153, and a ninth portion 156 connected to the lower side of the fourth portion 151, respectively. Can be.
제2 절연 테이프(150)의 제4 부분(151)이 케이스(120)의 일 측면에 부착된 이후 제5 부분(152)과 제6 부분(153)이 접혀 케이스(120)의 다른 두 측면에 부착될 수 있고, 이후 제7 부분(154)과 제8 부분(155)이 접혀 케이스(120)의 나머지 한 측면에 부착될 수 있다. 제7 부분(154)과 제8 부분(155)의 일부는 서로 중첩될 수 있다. 또한, 제9 부분(156)이 접혀 케이스(120)의 바닥면에 부착될 수 있다.After the fourth portion 151 of the second insulating tape 150 is attached to one side of the case 120, the fifth portion 152 and the sixth portion 153 are folded to the other two sides of the case 120. The seventh portion 154 and the eighth portion 155 may then be folded and attached to the other side of the case 120. A portion of the seventh portion 154 and the eighth portion 155 may overlap each other. In addition, the ninth portion 156 may be folded and attached to the bottom surface of the case 120.
제2 절연 테이프(150)의 형상과 케이스(120)에 대한 부착 방법은 전술한 예로 한정되지 않으며, 다양하게 변할 수 있다.The shape of the second insulating tape 150 and the attachment method to the case 120 are not limited to the above-described example and may be variously changed.
제1 절연 테이프(140)의 제3 부분(145)은 제2 절연 테이프(150)와 중첩된다. 제2 절연 테이프(150)가 제1 절연 테이프(140)보다 먼저 케이스(120)에 부착되는 경우, 제1 절연 테이프(140)의 제3 부분(145)은 제2 절연 테이프(150)를 덮는다(도 4 참조). 반대로, 제1 절연 테이프(140)가 제2 절연 테이프(150)보다 먼저 캡 플레이트(130)와 케이스(120)에 부착되는 경우, 제2 절연 테이프(150)가 제1 절연 테이프(140)의 제3 부분(145)을 덮는다.The third portion 145 of the first insulating tape 140 overlaps the second insulating tape 150. When the second insulating tape 150 is attached to the case 120 before the first insulating tape 140, the third portion 145 of the first insulating tape 140 covers the second insulating tape 150. (See Figure 4). On the contrary, when the first insulating tape 140 is attached to the cap plate 130 and the case 120 before the second insulating tape 150, the second insulating tape 150 is formed of the first insulating tape 140. Cover the third portion 145.
제1 실시예의 이차 전지(100)는 제1 및 제2 단자(160, 170)와 밀봉 마개(132) 및 벤트 플레이트(134)를 제외한 표면 전체가 제1 및 제2 절연 테이프(140, 150)로 덮인다. 이때 제1 절연 테이프(140)는 케이스(120)의 개구측 단부에서 디귿자 모양으로 접혀 케이스(120)의 내면(121) 일부와 단면(122) 전체 및 외면(123) 일부를 덮는 보조 절연부(142)를 포함한다.In the rechargeable battery 100 of the first exemplary embodiment, the entire surface of the rechargeable battery 100 except for the first and second terminals 160 and 170, the sealing plug 132, and the vent plate 134 is formed of the first and second insulating tapes 140 and 150. Covered with At this time, the first insulating tape 140 is folded in a recessed shape at the opening side end of the case 120 to cover a part of the inner surface 121 of the case 120, the entire end surface 122, and a part of the outer surface 123. 142).
대용량 전지 모듈은 복수의 이차 전지(100)로 구성된다. 예를 들어, 복수의 이차 전지(100)가 병렬로 연결되고, 병렬 연결된 복수의 이차 전지(100)가 다시 직렬로 연결되어 대용량 전지 모듈을 구성할 수 있다.The large capacity battery module is composed of a plurality of secondary batteries 100. For example, the plurality of secondary batteries 100 may be connected in parallel, and the plurality of secondary batteries 100 connected in parallel may be connected in series to form a large capacity battery module.
도 5는 제1 실시예의 이차 전지를 구비한 전지 모듈의 부분 단면도이고, 도 6은 비교예의 이차 전지를 구비한 전지 모듈의 부분 단면도이다. 도 6에서, 비교예의 이차 전지는 제1 절연 테이프(240)가 보조 절연부를 포함하지 않는 것을 제외하고 제1 실시예의 이차 전지와 같은 구성으로 이루어진다.FIG. 5 is a partial cross-sectional view of a battery module including the secondary battery of the first embodiment, and FIG. 6 is a partial cross-sectional view of the battery module including the secondary battery of the comparative example. In FIG. 6, the secondary battery of the comparative example has the same configuration as that of the secondary battery of the first embodiment except that the first insulating tape 240 does not include an auxiliary insulating portion.
도 5를 참고하면, 제1 절연 테이프(140)는 보조 절연부(142)를 포함하며, 보조 절연부(142)는 케이스(120)의 개구측 단부를 따라 케이스(120)의 내면(121) 일부와 단면(122) 전체 및 외면(123) 일부를 덮는다. 제2 절연 테이프(150)는 케이스(120)의 외면 전체를 둘러싼다. 전지 모듈의 외부 금속 프레임(200)은 이차 전지(100)의 케이스(120) 측면 외측에 위치한다.Referring to FIG. 5, the first insulating tape 140 may include an auxiliary insulating part 142, and the auxiliary insulating part 142 may have an inner surface 121 of the case 120 along an opening end of the case 120. It covers a part and the whole of the cross section 122 and a part of the outer surface 123. The second insulating tape 150 surrounds the entire outer surface of the case 120. The outer metal frame 200 of the battery module is located outside the side surface of the case 120 of the secondary battery 100.
이차 전지(100)는 제1 및 제2 절연 테이프(140, 150)로 둘러싸여 전류가 밖으로 누설되지 않으므로, 이차 전지(100)의 표면 전류가 절연 특성에 영향을 미친다. 모듈 조립 후 외부 금속 프레임(200)과 이차 전지(100) 사이의 절연 안전 거리(creepage distance)는 외부 금속 프레임(200)으로부터 이차 전지(100) 외측으로 노출된 도전 부재까지의 표면 경로가 된다.Since the secondary battery 100 is surrounded by the first and second insulating tapes 140 and 150 and no current leaks out, the surface current of the secondary battery 100 affects insulation characteristics. After module assembly, the insulation creepage distance between the outer metal frame 200 and the secondary battery 100 becomes a surface path from the outer metal frame 200 to the conductive member exposed to the outside of the secondary battery 100.
제1 실시예의 이차 전지(100)의 경우, 절연 안전 거리(A 화살표 경로로 도시)는 대략적으로 제2 부분(144)의 폭과 제1 부분(143)의 폭 및 제1 부분(143)과 제1 단자(160) 사이의 거리 합으로 표현될 수 있다.In the case of the secondary battery 100 of the first embodiment, the insulation safety distance (shown by the arrow path A) is approximately the width of the second portion 144 and the width of the first portion 143 and the first portion 143. It may be expressed as the sum of the distances between the first terminals 160.
도 6을 참고하면, 비교예의 제1 절연 테이프(240)는 캡 플레이트(130)의 외면을 덮는다. 이 경우 케이스(120)의 개구측 단부에서 케이스(120)의 내면(121) 일부가 노출되며, 캡 플레이트(130) 위로 제1 절연 테이프(240)를 부착하는 과정에서 조립 공차 등에 의해 캡 플레이트(130)의 가장자리 일부가 외부로 노출될 수 있다.Referring to FIG. 6, the first insulating tape 240 of the comparative example covers the outer surface of the cap plate 130. In this case, a part of the inner surface 121 of the case 120 is exposed at the opening side end of the case 120, and in the process of attaching the first insulating tape 240 over the cap plate 130, the cap plate ( A portion of the edge of 130 may be exposed to the outside.
비교예의 이차 전지의 경우, 절연 안전 거리(B 화살표 경로로 도시)는 외부로 노출된 케이스(120)의 단면(122) 폭과 내면(121) 일부 폭의 합으로 표현될 수 있다.In the case of the secondary battery of the comparative example, the insulation safety distance (shown by the arrow path B) may be expressed as the sum of the width of the cross section 122 and the width of a portion of the inner surface 121 of the case 120 exposed to the outside.
도 5와 도 6을 참고하면, 제1 실시예의 이차 전지(100)는 제1 절연 테이프(140)에 보조 절연부(142)가 형성됨에 따라, 대용량 전지 모듈에서 외부 금속 프레임(200)과 이차 전지(100) 사이의 절연 안전 거리를 효과적으로 늘릴 수 있으며, 그 결과 비교예의 이차 전지 대비 절연 특성을 향상시킬 수 있다.Referring to FIGS. 5 and 6, in the secondary battery 100 of the first embodiment, as the auxiliary insulation part 142 is formed on the first insulating tape 140, the external metal frame 200 and the secondary metal frame 200 are formed in the large capacity battery module. The insulation safety distance between the cells 100 can be effectively increased, and as a result, insulation properties can be improved as compared with the secondary battery of the comparative example.
도 7은 본 발명의 제2 실시예에 따른 이차 전지의 부분 확대 단면도이고, 도 8은 도 7에 도시한 이차 전지 중 제1 절연 테이프의 사시도이다.7 is a partially enlarged cross-sectional view of a rechargeable battery according to a second exemplary embodiment of the present invention, and FIG. 8 is a perspective view of a first insulating tape of the rechargeable battery illustrated in FIG. 7.
도 7과 도 8을 참고하면, 제2 실시예의 이차 전지(100a)에서 제1 절연 테이프(340)는 캡 절연부(141)에 형성된 돌출부(146)를 포함한다. 돌출부(146)는 캡 절연부(141)의 일부가 두 겹으로 중첩되어 서로 부착된 부분으로서, 캡 플레이트(130)의 외면을 덮지 않고 캡 플레이트(130)의 외측으로 돌출 형성된다.7 and 8, in the rechargeable battery 100a of the second embodiment, the first insulating tape 340 includes a protrusion 146 formed on the cap insulating portion 141. The protruding portion 146 is a portion of the cap insulation portion 141 overlapping two layers and attached to each other, and protruding to the outside of the cap plate 130 without covering the outer surface of the cap plate 130.
제1 단자(160)와 제2 단자(170)는 제1 방향을 따라 서로 마주한다. 보조 절연부(142)는 제1 및 제2 단자(160, 170)를 사이에 두고 제1 방향을 따라 서로 마주하는 제1 및 제2 보조 절연부(142a, 142b)와, 나머지 제3 및 제4 보조 절연부(142c, 142d)를 포함한다.The first terminal 160 and the second terminal 170 face each other along the first direction. The auxiliary insulator 142 may include the first and second auxiliary insulators 142a and 142b facing each other along the first direction with the first and second terminals 160 and 170 interposed therebetween, and the remaining third and the second and insulator portions 142a and 142b. 4 auxiliary insulating parts 142c and 142d.
두 개의 돌출부(146)는 제1 보조 절연부(142a)와 제1 단자(160) 사이, 그리고 제2 보조 절연부(142b)와 제2 단자(170) 사이에 위치하며, 제1 방향과 교차하는 제2 방향과 나란하게 형성된다.The two protrusions 146 are positioned between the first auxiliary insulation 142a and the first terminal 160 and between the second auxiliary insulation 142b and the second terminal 170 and intersect with the first direction. It is formed parallel to the second direction.
돌출부(146)는 캡 절연부(141)에 여유분이 추가되고, 이 여유분을 두 겹으로 접어 만들어지는 것이므로, 돌출부(146)의 양측에는 보조 절연부가 연결되지 않는다. 즉, 제3 및 제4 보조 절연부(142c, 142d)는 돌출부(146)의 양측에 절개부(147)를 형성하며, 절개부(147)로 인해 제3 및 제4 보조 절연부(142c, 142d) 각각은 세 개의 부분으로 분할 형성된다.The protruding portion 146 is added to the cap insulation portion 141, and because the extra insulation is made by folding two layers, the auxiliary insulation is not connected to both sides of the protruding portion 146. That is, the third and fourth auxiliary insulating parts 142c and 142d form cutouts 147 on both sides of the protrusion 146, and the third and fourth auxiliary insulating parts 142c and 142c are formed by the cutouts 147. 142d) Each is divided into three parts.
돌출부(146)는 캡 절연부(141)의 일부가 두 겹으로 중첩된 부분이므로, 외부 금속 프레임(200)과 이차 전지(100a) 사이의 절연 안전 거리(C 화살표 경로로 도시)는 전술한 제1 실시예 대비 돌출부(146) 폭의 두 배만큼 늘어난다. 따라서 제2 실시예의 이차 전지(100a)는 돌출부(146)로 인해 전술한 제1 실시예 대비 절연 안전 거리를 늘려 절연 특성을 더욱 향상시킬 수 있다.Since the protrusion 146 is a portion in which a part of the cap insulation portion 141 is overlapped in two layers, an insulation safety distance (shown by a C arrow path) between the external metal frame 200 and the secondary battery 100a is determined as described above. The protrusion 146 is twice as wide as in the first embodiment. Accordingly, the secondary battery 100a of the second embodiment may further improve insulation characteristics by increasing the insulation safety distance due to the protrusion 146.
제2 실시예의 이차 전지(100a)에서 돌출부(146)를 제외한 나머지 구성은 전술한 제1 실시예와 동일하므로, 중복되는 설명은 생략한다.In the secondary battery 100a of the second embodiment, the rest of the configuration except for the protrusion 146 is the same as in the above-described first embodiment, and thus redundant description thereof will be omitted.
상기에서는 본 발명의 바람직한 실시예에 대하여 설명하였지만, 본 발명은 이에 한정되는 것이 아니고 특허청구범위와 발명의 상세한 설명 및 첨부한 도면의 범위 안에서 여러 가지로 변형하여 실시하는 것이 가능하고 이 또한 본 발명의 범위에 속하는 것은 당연하다.Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto, and various modifications and changes can be made within the scope of the claims and the detailed description of the invention and the accompanying drawings. Naturally, it belongs to the range of.
- 부호의 설명 -Description of the sign
100: 이차 전지 110: 전극 조립체100: secondary battery 110: electrode assembly
120: 케이스 130: 캡 플레이트120: case 130: cap plate
140: 제1 절연 테이프 141: 캡 절연부140: first insulating tape 141: cap insulating portion
142: 보조 절연부 150: 제2 절연 테이프142: auxiliary insulating portion 150: second insulating tape
160: 제1 단자 170: 제2 단자160: first terminal 170: second terminal
181: 제1 리드 탭 182: 제2 리드 탭181: first lead tab 182: second lead tab
191: 제1 절연 부재 192: 제2 절연 부재191: first insulating member 192: second insulating member
200: 외부 금속 프레임200: outer metal frame
Claims (10)
- 전극 조립체;An electrode assembly;상기 전극 조립체를 수용하며 일측에 개구가 형성된 케이스;A case accommodating the electrode assembly and having an opening formed at one side thereof;상기 케이스의 개구측 단부를 노출시키며 상기 케이스의 내측에 결합되어 상기 전극 조립체를 밀봉하는 캡 플레이트; 및A cap plate exposing an opening end of the case and coupled to an inside of the case to seal the electrode assembly; And상기 캡 플레이트의 외면을 덮는 캡 절연부와, 상기 케이스의 개구측 단부를 덮는 보조 절연부를 포함하는 제1 절연 테이프A first insulating tape including a cap insulating portion covering an outer surface of the cap plate and an auxiliary insulating portion covering an opening end of the case;를 포함하는 이차 전지.Secondary battery comprising a.
- 제1항에 있어서,The method of claim 1,상기 케이스의 외면을 덮는 제2 절연 테이프를 더 포함하며,Further comprising a second insulating tape covering the outer surface of the case,상기 케이스의 외면에서 상기 보조 절연부의 일부는 상기 제2 절연 테이프와 중첩되는 이차 전지.A part of the auxiliary insulating part on the outer surface of the case overlaps with the second insulating tape.
- 제1항에 있어서,The method of claim 1,상기 캡 절연부는 네 개의 변을 포함하고,The cap insulator comprises four sides,상기 보조 절연부는 네 개로 분리되어 상기 캡 절연부의 네 변에 하나씩 연결 형성되는 이차 전지.The secondary battery is divided into four and the secondary battery is formed to be connected to one of the four sides of the cap insulation.
- 제3항에 있어서,The method of claim 3,상기 네 개의 보조 절연부 각각은 상기 캡 절연부로부터 디귿자 모양으로 접혀 상기 케이스의 개구측 단부에 부착되는 이차 전지.Each of the four auxiliary insulating parts is folded in a depressed shape from the cap insulating part and attached to an opening end of the case.
- 제4항에 있어서,The method of claim 4, wherein상기 네 개의 보조 절연부 각각은,Each of the four auxiliary insulations,상기 캡 절연부로부터 접혀 상기 케이스의 내면에 부착되는 제1 부분;A first portion folded from the cap insulation and attached to an inner surface of the case;상기 제1 부분으로부터 접혀 상기 케이스의 단면(end surface)에 부착되는 제2 부분; 및A second portion folded from the first portion and attached to an end surface of the case; And상기 제2 부분으로부터 접혀 상기 케이스의 외면에 부착되는 제3 부분A third portion folded from the second portion and attached to an outer surface of the case을 포함하는 이차 전지.Secondary battery comprising a.
- 제3항에 있어서,The method of claim 3,상기 캡 플레이트에는 제1 및 제2 단자, 밀봉 마개, 및 벤트 플레이트가 설치되고,The cap plate is provided with first and second terminals, sealing plugs, and vent plates,상기 캡 절연부는 상기 제1 및 제2 단자, 상기 밀봉 마개, 및 상기 벤트 플레이트를 노출시키는 복수의 개구부를 형성하는 이차 전지.The cap insulating part may include a plurality of openings that expose the first and second terminals, the sealing plug, and the vent plate.
- 제6항에 있어서,The method of claim 6,상기 제1 단자와 상기 제2 단자는 제1 방향을 따라 서로 마주하고,The first terminal and the second terminal face each other along a first direction,상기 네 개의 보조 절연부는 상기 제1 및 제2 단자를 사이에 두고 상기 제1 방향을 따라 서로 마주하는 제1 및 제2 보조 절연부와, 나머지 제3 및 제4 보조 절연부를 포함하는 이차 전지.The four auxiliary insulating parts include first and second auxiliary insulating parts facing each other along the first direction with the first and second terminals interposed therebetween, and the remaining third and fourth auxiliary insulating parts.
- 제7항에 있어서,The method of claim 7, wherein상기 캡 절연부는, 그 일부가 두겹으로 중첩되어 서로 부착되며 상기 캡 플레이트의 외측으로 돌출된 돌출부를 더 포함하는 이차 전지.The cap insulation part further includes a protrusion part of which is overlapped with each other in two layers and protrudes outwardly of the cap plate.
- 제8항에 있어서,The method of claim 8,상기 돌출부는 상기 제1 보조 절연부와 상기 제1 단자 사이 및 상기 제2 보조 절연부와 상기 제2 단자 사이에서 상기 제1 방향과 교차하는 제2 방향과 나란하게 형성되는 이차 전지.The protrusion is formed in parallel with a second direction crossing the first direction between the first auxiliary insulating part and the first terminal and between the second auxiliary insulating part and the second terminal.
- 제9항에 있어서,The method of claim 9,상기 제3 및 제4 보조 절연부 각각은 상기 돌출부의 양측에 절개부를 형성하는 이차 전지.Each of the third and fourth auxiliary insulating parts forms cutouts on both sides of the protrusion.
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006120419A (en) * | 2004-10-20 | 2006-05-11 | Toyota Motor Corp | Film-armored power storage device and case for the same |
JP2009187785A (en) * | 2008-02-06 | 2009-08-20 | Sanyo Electric Co Ltd | Packed battery |
KR20110128051A (en) * | 2010-05-20 | 2011-11-28 | 에스비리모티브 주식회사 | Secondary battery |
KR20130011285A (en) * | 2011-07-21 | 2013-01-30 | 삼성전기주식회사 | Spindle motor |
KR20150031724A (en) * | 2013-09-16 | 2015-03-25 | 삼성에스디아이 주식회사 | Secondary battery |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9209435B2 (en) * | 2012-03-29 | 2015-12-08 | Samsung Sdi Co., Ltd. | Rechargeable battery |
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-
2017
- 2017-09-13 WO PCT/KR2017/010041 patent/WO2018056628A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006120419A (en) * | 2004-10-20 | 2006-05-11 | Toyota Motor Corp | Film-armored power storage device and case for the same |
JP2009187785A (en) * | 2008-02-06 | 2009-08-20 | Sanyo Electric Co Ltd | Packed battery |
KR20110128051A (en) * | 2010-05-20 | 2011-11-28 | 에스비리모티브 주식회사 | Secondary battery |
KR20130011285A (en) * | 2011-07-21 | 2013-01-30 | 삼성전기주식회사 | Spindle motor |
KR20150031724A (en) * | 2013-09-16 | 2015-03-25 | 삼성에스디아이 주식회사 | Secondary battery |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4195400A1 (en) * | 2021-12-07 | 2023-06-14 | Samsung SDI Co., Ltd. | Secondary battery |
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