TWI594479B - Secondary battery and method for manufacturing the same - Google Patents
Secondary battery and method for manufacturing the same Download PDFInfo
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- TWI594479B TWI594479B TW104133209A TW104133209A TWI594479B TW I594479 B TWI594479 B TW I594479B TW 104133209 A TW104133209 A TW 104133209A TW 104133209 A TW104133209 A TW 104133209A TW I594479 B TWI594479 B TW I594479B
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- coupling protrusion
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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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- 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
- H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- 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
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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
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/147—Lids or covers
- H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
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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
- H01M50/528—Fixed electrical connections, i.e. not intended for disconnection
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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
- H01M50/543—Terminals
- H01M50/552—Terminals characterised by their shape
- H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
- H01M50/555—Window-shaped terminals
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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
- H01M50/543—Terminals
- H01M50/564—Terminals characterised by their manufacturing process
- H01M50/566—Terminals characterised by their manufacturing process by welding, soldering or brazing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/588—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries outside the batteries, e.g. incorrect connections of terminals or busbars
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/572—Means for preventing undesired use or discharge
- H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
- H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
- H01M50/593—Spacers; Insulating plates
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
- H01M50/116—Primary casings, jackets or wrappings of a single cell or a single battery characterised by the material
- H01M50/117—Inorganic material
- H01M50/119—Metals
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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
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
- H01M50/627—Filling ports
- H01M50/636—Closing or sealing filling ports, e.g. using lids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Description
本發明涉及一種二次電池及其製造方法，尤其涉及一種與正極(positive electrode)抽頭接觸的接觸導件(lead)的固定力得到了提高的二次電池及其製造方法。 The present invention relates to a secondary battery and a method of manufacturing the same, and, in particular, to a secondary battery in which a fixing force of a contact lead in contact with a positive electrode tap is improved and a method of manufacturing the same.
通常，二次電池是指與無法充電的原電池不同的可充放電的電池，廣泛使用於手機、PDA、筆記型電腦等的小型高科技電子設備領域。 Generally, a secondary battery refers to a rechargeable battery that is different from a primary battery that cannot be charged, and is widely used in small high-tech electronic devices such as mobile phones, PDAs, and notebook computers.
在這些二次電池中，矩形或圓筒形的二次電池具有利用金屬罐來容納電極元件的形狀。 Among these secondary batteries, a rectangular or cylindrical secondary battery has a shape in which a metal can is used to accommodate an electrode member.
現有技術文獻： Prior art literature:
專利文獻 Patent literature
專利文獻1：韓國專利公開 第10-2000-0020535號 Patent Document 1: Korean Patent Publication No. 10-2000-0020535
現有技術中的矩形或圓筒形的二次電池，其包括用於 將電極組件和電解液一同嵌入的罐、和用於堵住上述罐的開口而實現密封的蓋元件，所述蓋元件包括：頂蓋，其用於堵住所述罐的開口而實現密封；蓋板，其位於所述頂蓋下部並具有絕緣性；及接觸導件，其位於所述蓋板和頂蓋之間並焊接有形成於所述電極元件的正極抽頭(tap)。 a rectangular or cylindrical secondary battery of the prior art, which is included for a can member in which an electrode assembly and an electrolyte are embedded together, and a cover member for blocking the opening of the can to achieve sealing, the cover member comprising: a top cover for blocking an opening of the can to achieve sealing; a cover plate located at a lower portion of the top cover and having insulation; and a contact guide located between the cover plate and the top cover and soldered with a positive tap formed on the electrode member.
但是，所述接觸導件的一側端部焊接在正極抽頭而固定，其另一側端部並未固定，從而在另一側端部可能會發生卷翹或彎曲的現象。特別是，因卷翹或彎曲的接觸導件而可能會使電池發生短路。 However, one end portion of the contact guide is welded to the positive electrode tap and fixed, and the other end portion thereof is not fixed, so that curling or bending may occur at the other end portion. In particular, the battery may be short-circuited due to curled or bent contact guides.
本發明是為解決上述問題而提出的，本發明的目的在於提供一種通過固定焊接有正極抽頭的接觸導件的兩側端部來解決接觸導件發生卷翹或彎曲的問題，從而使短路防患於未然的二次電池及其製造方法。 The present invention has been made to solve the above problems, and an object of the present invention is to provide a problem of preventing curling or bending of a contact guide by fixing both end portions of a contact guide to which a positive electrode tap is welded, thereby preventing short-circuit prevention. A secondary battery that has not been diagnosed and a method of manufacturing the same.
本發明的為解決上述課題的二次電池，其具備：用於容納電極組件的罐(can)；蓋板，其與所述罐的開口部結合，並且從其一側至另一側分別形成有負極(negative electrode)抽頭孔、正極抽頭孔及注液孔；接觸導件，其位於所述蓋板的上表面，並且其一側端部與貫通所述正極抽頭孔的電極組件的正極抽頭結合，在其另一側端部形成有結合孔；及絕緣構件，其位於所述蓋板和所述接觸導件之間且形成有結合突起，該結合突起與所述接觸導件的結合孔結合的同時用於固定所述接觸導件的另一側端部，其 中，在所述結合突起的頂端可形成有固定部，所述固定部被所述接觸導件的上表面支撐，同時用於固定所述接觸導件。 A secondary battery according to the present invention for solving the above problems includes: a can for accommodating an electrode assembly; a cover plate coupled to an opening of the can, and formed separately from one side to the other side thereof a negative electrode tap hole, a positive electrode tap hole and a liquid injection hole; a contact guide located on an upper surface of the cover plate, and a one end portion thereof and a positive electrode tap of the electrode assembly penetrating the positive electrode tap hole Bonding, a coupling hole is formed at an edge of the other side thereof; and an insulating member is disposed between the cover plate and the contact guide and is formed with a coupling protrusion, and a coupling hole of the coupling protrusion and the contact guide Simultaneously for fixing the other side end of the contact guide, A fixing portion may be formed at a top end of the coupling protrusion, the fixing portion being supported by an upper surface of the contact guide while fixing the contact guide.
所述固定部，可以用高溫熱量對所述結合突起的頂端進行加壓，由此使所述結合突起的頂端部熔融的同時逐漸向外側擴張而形成。 The fixing portion may pressurize the tip end of the coupling protrusion with high-temperature heat, thereby gradually forming the tip end portion of the coupling protrusion while expanding outward.
在所述絕緣構件的兩側面可形成有用於支撐接觸導件的側部的加強肋(rib)。 Reinforcing ribs for supporting the side portions of the contact guide may be formed on both sides of the insulating member.
所述絕緣構件延伸形成至所述接觸導件的一側端部，並且形成有分別與所述注液孔和所述正極抽頭孔連通的注液貫通孔和正極抽頭貫通孔。 The insulating member is extended to one end of the contact guide, and a liquid injection through hole and a positive tap through hole respectively communicating with the liquid injection hole and the positive electrode tap hole are formed.
所述絕緣構件可以用黏合劑黏貼於所述蓋板。 The insulating member may be adhered to the cover plate with an adhesive.
所述接觸導件可包括：連接部，其與貫通所述正極抽頭孔的、電極組件的正極抽頭結合；結合部，其形成有與所述結合突起結合的結合孔；及封閉部，其位於所述連接部和所述結合部之間，並用於封閉所述注液孔。 The contact guide may include: a connection portion coupled to a positive electrode tap of the electrode assembly penetrating the positive electrode tap hole; a joint portion formed with a coupling hole coupled to the coupling protrusion; and a closing portion located at Between the connecting portion and the joint portion, and for closing the liquid injection hole.
另一方面，本發明的二次電池的製造方法包括：電極元件組裝步驟(S10)，通過罐的開口部來容納電極元件，之後將蓋板結合於所述罐的開口部；絕緣構件組裝步驟(S20)，將形成有結合突起的絕緣構件黏貼於所述蓋板的上表面；接觸導件組裝步驟(S30)，將所述結合突起貫通所述接觸導件的另一側端並使其互相結合，並且將所述接觸導件的一側端與貫通所述正極抽頭孔的電極元件的正極抽頭相連接；及接觸導件固定步驟(S40)，用高 溫的熱量對貫通所述接觸導件的所述結合突起的頂端部進行加壓，由此所述結合突起的頂端部熔融的同時逐漸向外側擴張而形成固定部，從而固定所述接觸導件。 On the other hand, the manufacturing method of the secondary battery of the present invention includes an electrode element assembly step (S10) of accommodating the electrode element through the opening of the can, and then bonding the cover to the opening of the can; the insulating member assembly step (S20), an insulating member formed with a bonding protrusion is adhered to an upper surface of the cap plate; a contact guiding assembly step (S30), the bonding protrusion is passed through the other end of the contact guiding member and Bonding to each other, and connecting one end of the contact guide to a positive electrode tap of an electrode member penetrating the positive tap hole; and a contact guide fixing step (S40), using a high The warm heat pressurizes the tip end portion of the coupling protrusion that penetrates the contact guide, whereby the tip end portion of the coupling protrusion is gradually expanded toward the outside while forming a fixing portion, thereby fixing the contact guide .
本發明的二次電池具有如下效果。 The secondary battery of the present invention has the following effects.
第一：通過在絕緣構件形成的結合突起來固定接觸導件的另一側端部，從而能夠解決接觸導件的另一側端部發生卷翹或彎曲的問題。 First: the other end portion of the contact guide is fixed by the coupling protrusion formed in the insulating member, so that the problem that the other end portion of the contact guide is curled or bent can be solved.
第二：將在結合突起形成的固定部熱融合而形成一體，由此能夠提高接觸導件的固定力。 Secondly, the fixing portion formed by the coupling protrusion is thermally fused to be integrated, whereby the fixing force of the contact guide can be improved.
第三：通過在絕緣構件形成的加強肋，能夠穩定地支撐接觸導件。 Third: The contact guide can be stably supported by the reinforcing rib formed in the insulating member.
第四：絕緣構件通過支撐整個接觸導件來能夠提高絕緣性。 Fourth: The insulating member can improve the insulation by supporting the entire contact guide.
第五：用黏合劑將絕緣構件黏貼於蓋板，從而能夠易於附著。 Fifth: The insulating member is adhered to the cover with an adhesive, so that it can be easily attached.
第六：由連接部、結合部及封閉部構成接觸導件，並在所述結合部形成結合孔，從而能夠改善接觸導件的功能。 Sixth: The contact guide is formed by the connecting portion, the joint portion, and the closing portion, and the joint hole is formed in the joint portion, so that the function of the contact guide can be improved.
第七：通過製造包括絕緣構件的二次電池，能夠提高接觸導件的兩側端部的固定力，從而可使短路防患於未然。 Seventh: By manufacturing a secondary battery including an insulating member, the fixing force of both end portions of the contact guide can be improved, so that the short circuit can be prevented.
100‧‧‧二次電池 100‧‧‧Secondary battery
110‧‧‧罐 110‧‧‧ cans
111‧‧‧電極組件 111‧‧‧Electrode assembly
120‧‧‧蓋板 120‧‧‧ cover
121‧‧‧負極抽頭孔 121‧‧‧Negative tap hole
122‧‧‧正極抽頭孔 122‧‧‧ positive tap hole
123‧‧‧注液孔 123‧‧‧ injection hole
130‧‧‧接觸導件 130‧‧‧Contact Guide
131‧‧‧連接部 131‧‧‧Connecting Department
132‧‧‧結合部 132‧‧‧Combination Department
132a‧‧‧結合孔 132a‧‧‧Combination hole
133‧‧‧封閉部 133‧‧‧Closed Department
140‧‧‧絕緣構件 140‧‧‧Insulating components
141‧‧‧結合突起 141‧‧‧ Combined protrusion
142‧‧‧固定部 142‧‧‧Fixed Department
143‧‧‧肋 143‧‧‧ rib
圖1是示出本發明的二次電池的立體圖。 Fig. 1 is a perspective view showing a secondary battery of the present invention.
圖2a是示出本發明的二次電池的剖視圖。 Fig. 2a is a cross-sectional view showing a secondary battery of the present invention.
圖2b是圖2a中標注‘A’的部位的放大圖。 Figure 2b is an enlarged view of the portion labeled "A" in Figure 2a.
圖3是示出本發明的二次電池的製造方法的流程圖。 3 is a flow chart showing a method of manufacturing a secondary battery of the present invention.
圖4至圖8是示出本發明的二次電池的製造方法的圖，圖4是示出電極元件的組裝步驟的圖，圖5是示出絕緣構件的組裝步驟的圖，圖6是示出接觸導件的組裝步驟的圖，圖7及圖8是示出接觸導件的固定步驟的圖。 4 to 8 are views showing a method of manufacturing a secondary battery of the present invention, FIG. 4 is a view showing an assembly step of the electrode member, and FIG. 5 is a view showing an assembly step of the insulating member, and FIG. 6 is a view FIG. 7 and FIG. 8 are diagrams showing a fixing step of the contact guide. FIG.
圖9是示出本發明的二次電池的另一實施例的圖。 Fig. 9 is a view showing another embodiment of the secondary battery of the present invention.
下面，為了使本領域的普通技術人員容易實施本發明，參照附圖詳細說明本發明的實施例。但是，本發明可以以各種不同的形態實現，並不限於本說明書中的實施例。並且，在附圖中為更明確說明本發明，省略了與本說明不相關的部分，在說明書全文中對於相似部分標注了相似的附圖標記。 In the following, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention can be implemented in various different forms, and is not limited to the embodiments in the present specification. Further, in the drawings, the present invention is more clearly described, and portions that are not related to the description are omitted, and like reference numerals are used throughout the specification.
如圖1至圖2b所示，本發明的二次電池100包括：罐110，其用於容納具備負極抽頭111a和正極抽頭111b的電極組件111；蓋板120，其用於封閉罐110的開口部；接觸導件130，其與貫通蓋板120的正極抽頭111b結合；及頂蓋(未圖示)，其位於蓋板120的上部，並且用於密封所述罐110的開口部。 As shown in FIGS. 1 to 2b, the secondary battery 100 of the present invention includes a tank 110 for accommodating an electrode assembly 111 having a negative electrode tap 111a and a positive electrode tap 111b, and a cap plate 120 for closing the opening of the can 110 a contact guide 130 coupled to the positive tap 111b of the through cover 120; and a top cover (not shown) located at an upper portion of the cover 120 and for sealing the opening of the can 110.
罐110以矩形形成，在其內部容納有電極元件111。 The can 110 is formed in a rectangular shape, and an electrode member 111 is accommodated therein.
另一方面，電極元件111以負極、隔膜及正極重疊的狀態捲曲成滾筒狀，所述負極與負極抽頭111a結合，所述正極與正極抽頭111b結合，正極抽頭111b在貫穿蓋板120之後焊接到接觸導件130的一側端部。 On the other hand, the electrode element 111 is crimped into a roll shape in a state in which the negative electrode, the separator, and the positive electrode are overlapped, the negative electrode is coupled to the negative electrode tap 111a, the positive electrode is coupled to the positive electrode tap 111b, and the positive electrode tap 111b is welded to the cover plate 120 after being passed through One end of the contact guide 130 is contacted.
蓋板120與罐110的開口部上端結合，並從其一側至另一側分別形成有負極抽頭孔121、正極抽頭孔122及注液孔123，負極抽頭孔121是使負極抽頭111a通過的孔，正極抽頭孔122是使正極抽頭111b通過的孔，注液孔123是用於注入注液的孔。此時，蓋板具有絕緣性。 The cover 120 is coupled to the upper end of the opening of the can 110, and has a negative tap hole 121, a positive tap hole 122, and a liquid injection hole 123 formed from one side to the other side, and the negative tap hole 121 is a negative electrode tap 111a. The hole, the positive tap hole 122 is a hole through which the positive electrode tap 111b passes, and the liquid injection hole 123 is a hole for injecting the liquid. At this time, the cover is insulative.
參照圖2a，接觸導件130位於蓋板120的上表面，並焊接有正極抽頭111b而與其結合。即，對於接觸導件130而言，在其一側端部具備與貫通了正極抽頭孔122的正極抽頭111b結合的連接部131；在其另一側端部具備結合部132；在連接部131和結合部132之間具備用於封閉注液孔123的封閉部133。 Referring to Fig. 2a, the contact guide 130 is located on the upper surface of the cover 120 and is welded to the positive electrode tab 111b to be coupled thereto. In other words, the contact guide 130 includes a connection portion 131 that is coupled to the positive electrode tap 111b that has passed through the positive electrode tap hole 122 at one end portion thereof, and a coupling portion 132 at the other end portion thereof. A closing portion 133 for closing the liquid injection hole 123 is provided between the joint portion 132 and the joint portion 132.
此時，接觸導件130的另一側端部並未被固定，因此會存在卷翹或彎曲的問題，尤其，在移動二次電池時，因接觸導件130的卷翹或彎曲而存在發生短路的問題。 At this time, the other end portion of the contact guide 130 is not fixed, so there is a problem of curling or bending, in particular, when the secondary battery is moved, it occurs due to curling or bending of the contact guide 130. Short circuit problem.
為解決這種問題，本發明的二次電池包括絕緣構件140，所述絕緣構件140用於固定接觸導件130的另一側端部。 To solve such a problem, the secondary battery of the present invention includes an insulating member 140 for fixing the other side end portion of the contact guide 130.
如圖2a及圖2b所示，絕緣構件140包括：結合突起141，其位於蓋板120和接觸導件130之間，並且與在接 觸導件130形成的結合孔132a結合，同時使接觸導件130的另一側端部、即封閉部133固定；和固定部142，其位於結合突起141的頂端，並且被接觸導件130的上表面支撐的同時用於固定接觸導件130。 As shown in FIG. 2a and FIG. 2b, the insulating member 140 includes: a coupling protrusion 141 which is located between the cover plate 120 and the contact guide 130, and is connected thereto. The coupling hole 132a formed by the contact 130 is combined while fixing the other side end of the contact guide 130, that is, the closing portion 133; and the fixing portion 142, which is located at the top end of the coupling protrusion 141, and is contacted by the guide 130 The upper surface is supported while fixing the contact guide 130.
即，絕緣構件140通過將接觸導件130的結合孔132a插入於結合突起141來實現結合並固定，固定部142被接觸導件130的上表面支撐，同時固定接觸導件130使得其不會從結合突起141脫落。 That is, the insulating member 140 is bonded and fixed by inserting the coupling hole 132a of the contact guide 130 into the coupling protrusion 141, and the fixing portion 142 is supported by the upper surface of the contact guide 130 while fixing the contact guide 130 so that it does not The coupling protrusion 141 comes off.
對此，就接觸導件130而言，其一側端部與正極抽頭111b焊接並固定，其另一側端部通過絕緣構件140的結合突起141和固定部142來固定，從而能夠固定兩側端部。尤其，能夠解決接觸導件130的另一側端部發生卷翹或彎曲的問題。 In this regard, in terms of the contact guide 130, one end portion thereof is welded and fixed to the positive electrode tap 111b, and the other end portion thereof is fixed by the coupling protrusion 141 of the insulating member 140 and the fixing portion 142, so that both sides can be fixed. Ends. In particular, it is possible to solve the problem that the other end portion of the contact guide 130 is curled or bent.
另一方面，絕緣構件140可被高溫熔融，其由具有絕緣性的合成樹脂構成，並且固定部142通過用高溫熱量對結合突起141的頂端進行加壓來使結合突起141的頂端部熔融，同時逐漸向外側擴張而形成。 On the other hand, the insulating member 140 can be melted at a high temperature, which is made of a synthetic resin having an insulating property, and the fixing portion 142 melts the tip end portion of the coupling protrusion 141 by pressurizing the tip end of the coupling protrusion 141 with high-temperature heat, while It gradually expands to the outside to form.
即，固定部142通過結合突起141的頂端部熔融而形成一體，由此能夠更加簡化結構，尤其，通過增大固定部142和結合突起141的強度，可提高接觸導件130的固定力。 That is, the fixing portion 142 is integrally formed by melting the tip end portion of the coupling protrusion 141, whereby the structure can be further simplified, and in particular, by increasing the strength of the fixing portion 142 and the coupling protrusion 141, the fixing force of the contact guide 130 can be improved.
另一方面，參照圖1，在絕緣構件140的兩側面形成有用於支撐接觸導件130的側部的加強肋143，加強肋143能夠防止接觸導件130向寬度方向移動，並且能夠提 高絕緣構件140的強度。 On the other hand, referring to FIG. 1, reinforcing ribs 143 for supporting the side portions of the contact guide 130 are formed on both side faces of the insulating member 140, and the reinforcing ribs 143 can prevent the contact guide 130 from moving in the width direction, and can be lifted The strength of the high insulation member 140.
另一方面，絕緣構件140以能夠覆蓋至接觸導件130的一側端部、即連接部131的方式延伸形成，並且形成有分別與注液孔123和正極抽頭孔122連通的注液貫通孔145和正極抽頭貫通孔144。即，絕緣構件140從接觸導件130的一側端部至另一側端部支撐接觸導件130，從而能夠提高接觸導件130的支撐力和絕緣性。 On the other hand, the insulating member 140 is formed to extend so as to cover the one end portion of the contact guide 130, that is, the connecting portion 131, and is formed with a liquid-filling through hole that communicates with the liquid injection hole 123 and the positive electrode tap hole 122, respectively. 145 and the positive tap through hole 144. That is, the insulating member 140 supports the contact guide 130 from one end to the other end of the contact guide 130, so that the supporting force and the insulating property of the contact guide 130 can be improved.
另一方面，絕緣構件140可由黏合劑150黏貼於蓋板120的上表面，從而能夠將絕緣構件140更加簡便地固定於蓋板120。 On the other hand, the insulating member 140 can be adhered to the upper surface of the cap plate 120 by the adhesive 150, so that the insulating member 140 can be more easily fixed to the cap plate 120.
具有如上所述結構的本發明的二次電池，其包括用於固定接觸導件130的另一側端部、即封閉部133的絕緣構件140，由此能夠解決接觸導件130的一側端部發生卷翹或彎曲的的問題，從而使短路防患於未然。 The secondary battery of the present invention having the structure as described above, which includes the insulating member 140 for fixing the other side end portion of the contact guide 130, that is, the closing portion 133, whereby one side end of the contact guide 130 can be solved The problem of curling or bending occurs, so that the short circuit is prevented.
下面，參照附圖詳細說明本發明的二次電池的製造方法進行。 Hereinafter, the method of manufacturing the secondary battery of the present invention will be described in detail with reference to the accompanying drawings.
如圖3所示，本發明的二次電池的製造方法包括電極元件組裝步驟(S10)、絕緣構件組裝步驟(S20)、接觸導件組裝步驟(S30)、及接觸導件固定步驟(S40)。 As shown in FIG. 3, the manufacturing method of the secondary battery of the present invention includes an electrode element assembly step (S10), an insulating member assembly step (S20), a contact guide assembly step (S30), and a contact guide fixing step (S40). .
在電極元件組裝步驟(S10)中，如圖4所示，通過罐110的開口部來容納由負極、隔膜及正極捲曲而成的電極組件111。此時，也一同容納電解液。 In the electrode element assembly step (S10), as shown in FIG. 4, the electrode assembly 111 which is crimped by the negative electrode, the separator, and the positive electrode is accommodated through the opening of the can 110. At this time, the electrolyte is also contained together.
之後，將蓋板120結合於罐110的開口部上端而封閉開口部。此時，從蓋板120的負極抽頭孔121引出電極組 件111的負極抽頭111a；從正極抽頭孔123引出電極組件111的正極抽頭孔111b。 Thereafter, the cover 120 is coupled to the upper end of the opening of the can 110 to close the opening. At this time, the electrode group is taken out from the negative tap hole 121 of the cover 120 The negative electrode tap 111a of the member 111; the positive electrode tap hole 111b of the electrode assembly 111 is taken out from the positive electrode tap hole 123.
在絕緣構件組裝步驟(S20)中，如圖5所示，在蓋板120的上表面黏貼形成有結合突起141的絕緣構件140。此時，絕緣構件140用黏合劑150黏貼於蓋板120，從而提高操作性和方便性。 In the insulating member assembling step (S20), as shown in FIG. 5, the insulating member 140 on which the coupling protrusion 141 is formed is adhered to the upper surface of the cap plate 120. At this time, the insulating member 140 is adhered to the cap plate 120 with the adhesive 150, thereby improving operability and convenience.
並且，絕緣構件140由具有絕緣性的合成樹脂製成，由此使結合突起141熱熔融而能夠更加容易形成固定部142。即，能夠同時獲得絕緣性和加工性。 Further, the insulating member 140 is made of an insulating synthetic resin, whereby the bonding protrusion 141 is thermally fused, and the fixing portion 142 can be formed more easily. That is, insulation and workability can be simultaneously obtained.
在接觸導件組裝步驟(S30)中，如圖6所示，將接觸導件130配置在絕緣構件140的上表面，之後接觸導件130的另一側端部與結合突起141結合，而接觸導件130的一側端部與貫通了正極抽頭孔123的電極元件111的正極抽頭111b焊接而連接。 In the contact guide assembly step (S30), as shown in FIG. 6, the contact guide 130 is disposed on the upper surface of the insulating member 140, and then the other side end portion of the contact guide 130 is combined with the coupling protrusion 141 to be in contact. One end of the guide 130 is welded to and connected to the positive electrode tap 111b of the electrode element 111 that has passed through the positive electrode tap hole 123.
即，就接觸導件130而言，其一側端部焊接於正極抽頭111b而固定，其另一側端部與結合突起141結合而固定。 That is, in the contact guide 130, one end portion is welded to the positive electrode tap 111b and fixed, and the other end portion is fixed to the joint protrusion 141.
在接觸導件固定步驟(S40)中，如圖7及圖8所示，用熱壓機10用高溫的熱量對貫通接觸導件130的結合突起141的頂端部進行加壓。據此，使結合突起141的頂端部熔融的同時逐漸向外側擴張而形成固定部142，從而固定接觸導件130。 In the contact guide fixing step (S40), as shown in FIGS. 7 and 8, the top end portion of the coupling protrusion 141 that penetrates the contact guide 130 is pressurized by the hot press 10 with high-temperature heat. As a result, the distal end portion of the coupling protrusion 141 is melted while gradually expanding outward to form the fixing portion 142, thereby fixing the contact guide 130.
下面，對本發明的另一實施例進行說明。對於具有與所述實施例相同的結構和功能的結構，使用相同的附圖標 記，並省略重複說明。 Next, another embodiment of the present invention will be described. For the structure having the same structure and function as the embodiment, the same icon is used Remember and repeat the explanation.
圖9是示出本發明的二次電池的另一實施例的圖。 Fig. 9 is a view showing another embodiment of the secondary battery of the present invention.
本實施例的二次電池中，在絕緣構件140’所形成的結合突起141’以橢圓形形成，與結合突起141’結合的接觸導件130’的結合孔132a’以橢圓形形成。 In the secondary battery of the present embodiment, the coupling protrusion 141' formed in the insulating member 140' is formed in an elliptical shape, and the coupling hole 132a' of the contact guide 130' combined with the coupling protrusion 141' is formed in an elliptical shape.
即，相互結合的結合突起141’和結合孔132a’以橢圓形形成，由此提高結合性，尤其能夠防止接觸導件130’的旋轉或移動。 That is, the coupling protrusions 141' and the coupling holes 132a' which are combined with each other are formed in an elliptical shape, thereby improving the bonding property, and in particular, the rotation or movement of the contact guide 130' can be prevented.
本發明的範圍取決於後述的請求項而非所述的詳細說明，應理解為從請求項的含義和範圍、以及其均等概念所匯出的所有變更或變形的狀態均屬於本發明的範圍。 The scope of the present invention is determined by the scope of the present invention, and the scope of the present invention is to be construed as being limited by the scope of the invention and the scope of the invention.
100‧‧‧二次電池 100‧‧‧Secondary battery
110‧‧‧罐 110‧‧‧ cans
120‧‧‧蓋板 120‧‧‧ cover
130‧‧‧接觸導件 130‧‧‧Contact Guide
131‧‧‧連接部 131‧‧‧Connecting Department
132‧‧‧結合部 132‧‧‧Combination Department
133‧‧‧封閉部 133‧‧‧Closed Department
140‧‧‧絕緣構件 140‧‧‧Insulating components
142‧‧‧固定部 142‧‧‧Fixed Department
143‧‧‧加強肋 143‧‧‧Strengthened ribs
Claims (8)
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| KR1020140162821A KR101812377B1 (en) | 2014-11-20 | 2014-11-20 | Secondary battery and method for manufacturing the same |
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| TW201620190A TW201620190A (en) | 2016-06-01 |
| TWI594479B true TWI594479B (en) | 2017-08-01 |
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| KR (1) | KR101812377B1 (en) |
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| CN1747215A (en) * | 2004-09-09 | 2006-03-15 | 三星Sdi株式会社 | Can type secondary battery |
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| KR100338443B1 (en) * | 2000-03-09 | 2002-06-05 | 김성환 | Electrodes for a battery and method for manufacturing thereof |
| JP3736789B2 (en) | 2000-04-10 | 2006-01-18 | Ｎｅｃトーキン栃木株式会社 | Sealed battery |
| JP3756096B2 (en) | 2001-10-02 | 2006-03-15 | Ｎｅｃトーキン栃木株式会社 | Sealed battery |
| CN201364915Y (en) * | 2009-03-06 | 2009-12-16 | 天津力神电池股份有限公司 | Battery cover of square-type lithium ion battery |
| JP5525904B2 (en) * | 2010-04-28 | 2014-06-18 | 日立ビークルエナジー株式会社 | Secondary battery |
| US9293756B2 (en) * | 2010-09-17 | 2016-03-22 | Samsung Sdi Co., Ltd. | Rechargeable battery |
| KR102249895B1 (en) * | 2014-03-31 | 2021-05-07 | 삼성에스디아이 주식회사 | Rechargeable battery having top insulation member |
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| CN1747215A (en) * | 2004-09-09 | 2006-03-15 | 三星Sdi株式会社 | Can type secondary battery |
| CN101192659B (en) * | 2006-11-30 | 2011-10-05 | 三洋电机株式会社 | Battery pack and method for manufacturing the same |
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| JP2016100341A (en) | 2016-05-30 |
| KR101812377B1 (en) | 2017-12-26 |
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| KR20160060463A (en) | 2016-05-30 |
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| CN105633332A (en) | 2016-06-01 |
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