TWI643383B - Battery sealing method and structure thereof - Google Patents
Battery sealing method and structure thereof Download PDFInfo
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- TWI643383B TWI643383B TW106140901A TW106140901A TWI643383B TW I643383 B TWI643383 B TW I643383B TW 106140901 A TW106140901 A TW 106140901A TW 106140901 A TW106140901 A TW 106140901A TW I643383 B TWI643383 B TW I643383B
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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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Abstract
本發明係指一種電池封冠之方法及其結構，其封冠方法包含有(a)備料、(b)接合處蒸鍍、(c)材料充填、(d)雷射焊接及(e)表面處理等步驟，而完成電池封冠之結構，且該外殼係由一鋁殼體及至少一鋁冠體相對焊接而成，本發明之特色在於殼體鄰近封蓋設置之開口端緣接合處蒸鍍有一抗腐蝕金屬層，使其該鋁殼抗腐蝕金屬層與冠體焊接受熱時反應形成合金層，藉此，有效解決的鋰電池內電解質溶液滲透到微裂紋，並可有效地提升焊接區的抗腐蝕性，同時提高焊接強度。 The present invention relates to a method of sealing a battery and a structure thereof, the method of sealing a crown comprising (a) preparing a material, (b) depositing at a joint, (c) filling a material, (d) laser welding, and (e) a surface Processing, etc., to complete the structure of the battery seal, and the outer casing is formed by welding an aluminum shell and at least one aluminum crown. The invention is characterized in that the shell is steamed adjacent to the open end edge of the cover. It is plated with a corrosion-resistant metal layer, so that the corrosion-resistant metal layer of the aluminum shell reacts with the crown to form an alloy layer when heated, thereby effectively solving the electrolyte solution in the lithium battery and penetrating into the micro-crack, and effectively improving the welding zone Corrosion resistance while increasing weld strength.
Description
本發明隸屬一種電池之封冠技術領域，具體而言係指一種可提高抗腐蝕性之電池封冠之方法及其結構，藉以能有效的提高焊接強度，避免因電池之電解質溶液腐蝕而產生漏液問題，以延長電池之效能及使用壽命。 The invention belongs to the technical field of sealing of a battery, in particular to a method for sealing a battery for improving corrosion resistance and a structure thereof, thereby effectively improving the welding strength and avoiding leakage due to corrosion of the electrolyte solution of the battery. Liquid problems to extend battery performance and service life.
按，近年來在鋰電池領域討論中，以促進相關技術的安全儲存和應用為主，這是為了促進對鋰電池產品發展，輕質，高品質，高強度和基於解決滲漏問題。但是現有電池在封冠時的鋁焊接交界處，是鋰電池外殼的脆弱區，如第一圖所示，鋰電池外殼(10)一般係由一中空鋁殼體(11)所構成，並於該鋁殼體(11)兩端形成有至少一開口，且於該等鋁殼體(11)完成內部電池材料填料後在開口上焊接有一鋁冠體(15)進行封冠，供封閉該鋁殼體(11)，且於其間充填的電池材料包含有電解質溶液。現有鋁冠體(15)接設於鋁殼體(11)開口係以焊接為主，然其在焊接過程中鋁殼體(11)或鋁冠體(15)在鋁焊接交界處容易產生微裂痕，且鋁殼體(11)或鋁冠體(15)在鋁焊接交界處附近也會因高熱而變質而產生鋁穿孔、變形；為了減少微裂痕、鋁穿孔及變形的產生，一般會以增加其鋁焊接交界處的焊接面積來解決，如第二圖所示，通常是 在鋁殼體(11)與鋁冠體(15)的銜接處形成V形楔口(16)，供進行焊料填料，之後再進行焊接。惟如此雖可解決部份裂痕及強度不足的問題，但其需要增加工序及材料，且焊接時會有焊料不足而手工補料、又或焊接後因溢料而產生凹凸不平的狀況，於鋁焊接交界處形成嗆孔，破壞鋁殼體(11)與鋁冠體(15)焊接處的美觀，而需另外進行表面處理，無形間也會提高焊接成本；再者，現有鋁殼體(11)與鋁冠體(15)的鋁焊接交界處無任何防護，其在鋰電池使用過程中，也會因電解質溶液的而發生解離現象，進而產生腐蝕該鋁焊接交界處的問題，造成鋰電池使用過程中洩漏的問題發生，形成安全上的巨大威脅；為了解決前述問題，有業者開發有新的接合方式，如日本專利特開平10-180438，其係在待接合的鋁構件的接合介面處，***較低熔點的釬料【熔填料，其可以選自鋅鋁型合金(Zn-Al)、錫鋁型合金(Sn-Al)等】，而釬焊材料可以釬焊片的形式預先塗覆在接合介面上、也可以在接合介面處以夾層狀態佈置諸如粉末或板的釬焊材料、又或者可以通過將釬料壓在鋁構件的接合介面上來施加釬焊金屬，另外，也需要使用粘合劑，可以將粉末狀或板狀的釬料金屬接合到接合介面，並且可以任意設置***釬料的方式。其最大的問題是使用塗覆、佈置或黏合的方式進行，如此容易產生釬料分佈不均勻的現象，影響後續焊接的有效性，可能形成不良的細縫，造成電解質溶液解離後的洩漏問題，進而產生腐蝕該鋁焊接交界處，且工序較多，也增加工時及成本，故有待進一步的改良與開發。 According to recent discussions in the field of lithium batteries, to promote the safe storage and application of related technologies, this is to promote the development of lithium battery products, lightweight, high quality, high strength and based on solving leakage problems. However, the existing battery in the aluminum welding junction at the time of sealing is a fragile area of the lithium battery casing. As shown in the first figure, the lithium battery casing (10) is generally composed of a hollow aluminum casing (11), and The aluminum shell (11) is formed with at least one opening at both ends, and after the aluminum shell (11) completes the internal battery material filler, an aluminum crown (15) is welded to the opening for sealing to seal the aluminum. The casing (11) and the battery material filled therebetween contain an electrolyte solution. The existing aluminum crown (15) is connected to the aluminum casing (11), and the opening is mainly welded. However, during the welding process, the aluminum casing (11) or the aluminum crown (15) is liable to be generated at the aluminum welding junction. Cracks, and the aluminum shell (11) or the aluminum crown (15) will also be perforated and deformed by high heat in the vicinity of the aluminum welding junction; in order to reduce the occurrence of micro-cracks, aluminum perforations and deformation, it is generally Increase the welding area of the aluminum welding junction to solve, as shown in the second figure, usually A V-shaped wedge opening (16) is formed at the junction of the aluminum casing (11) and the aluminum crown (15) for solder filler, and then soldering. However, although the problem of partial cracking and insufficient strength can be solved, it is necessary to increase the number of processes and materials, and there is a shortage of solder during soldering, and the situation of uneven feeding due to flashing or soldering may result in unevenness in the aluminum. The weld junction forms a bore, which destroys the aesthetics of the welded joint between the aluminum shell (11) and the aluminum crown (15), and requires additional surface treatment, which in turn increases the welding cost; further, the existing aluminum shell (11) ) There is no protection at the junction with the aluminum crown of the aluminum crown (15). During the use of the lithium battery, dissociation occurs due to the electrolyte solution, which causes corrosion of the aluminum welding junction, resulting in a lithium battery. The problem of leakage during use occurs, posing a great threat to safety; in order to solve the aforementioned problems, a new joint method has been developed by the manufacturer, such as Japanese Patent Laid-Open No. Hei 10-180438, which is attached to the joint interface of the aluminum member to be joined. Inserting a lower melting point solder [melting filler, which may be selected from zinc-aluminum alloy (Zn-Al), tin-aluminum alloy (Sn-Al), etc.), and the brazing material may be pre-coated in the form of a brazing sheet Overlay interface It is also possible to arrange a brazing material such as a powder or a plate in a sandwich state at the joint interface, or to apply a brazing metal by pressing the brazing filler metal on the bonding interface of the aluminum member, and further, it is also necessary to use an adhesive, which may The powdered or plate-shaped solder metal is bonded to the bonding interface, and the manner in which the solder is inserted can be arbitrarily set. The biggest problem is that it is applied by coating, arranging or bonding, which is easy to produce uneven distribution of solder, affecting the effectiveness of subsequent welding, and may form bad slits, causing leakage problems after dissociation of electrolyte solution. Further, corrosion occurs at the aluminum welding junction, and there are many processes, which also increases man-hours and costs, and further improvement and development are required.
有鑑於此，本發明乃針對前述問題深入探討，並藉 由多年從事相關產業之研發經驗，積極尋求解決之道，經不斷努力的研究與試作，終於成功的開發出一種電池封冠之方法及其結構，藉以克服現有者因易生不良所衍生的困擾與不便。 In view of this, the present invention is directed to the aforementioned problems and is borrowed. After years of research and development experience in related industries, and actively seeking solutions, through continuous efforts in research and trials, I finally succeeded in developing a battery sealing method and its structure to overcome the problems caused by the existing disadvantages. And inconvenience.
因此，本發明之主要目的係在提供一種安全性高的電池封冠之方法，藉此能利用蒸鍍金屬塗層之技術，使抗腐蝕金屬層能均勻分佈於接合面，可加強焊接強度，並提高拉伸強度，增進鋰電池使用過程的安全性。 Therefore, the main object of the present invention is to provide a method for sealing a battery with high safety, whereby the technique of vapor deposition metal coating can be used to uniformly distribute the corrosion-resistant metal layer on the joint surface, thereby enhancing the welding strength. And increase the tensile strength, improve the safety of the use of lithium batteries.
又，本發明之再一主要目的係在提供一種防洩漏電解液的電池封冠之結構，其能解決焊接處電解質熱解問題、焊縫腐蝕問題、熔接強度問題、毛孔問題、變形問題及焊接裂紋問題，有效避免鋰電池的洩漏問題，可延長其使用壽命。 Moreover, another main object of the present invention is to provide a battery seal structure for preventing leakage electrolyte, which can solve the problem of electrolyte pyrolysis at the weld, weld corrosion problem, weld strength problem, pore problem, deformation problem and welding. The crack problem effectively avoids the leakage of the lithium battery and prolongs its service life.
基於此，本發明主要係透過下列的技術手段，來實現前述之目的及其功效，其係一種電池封冠之方法，用於形成由一兩端中至少一端具開口之鋁殼體及至少一對應蓋合於鋁殼體開口之鋁冠體所構成的電池外殼，該方法至少包含有；(a)備料之步驟：係以壓鑄、鋁擠等方式加工形成所需的鋁殼體與鋁冠體；(b)接合處蒸鍍之步驟：於該鋁殼體或/及鋁冠體的接合處表面利用蒸鍍技術鍍設有一抗腐蝕金屬層，而該抗腐蝕金屬層可以選擇自鎳(Ni)之金屬；(c)材料充填之步驟：將電池之材料充填於鋁殼體內；(d)雷射焊接之步驟：將鋁冠體蓋設於鋁殼體開 口，並利用雷射焊接技術進行焊接，使該抗腐蝕金屬層與鋁殼體或/及鋁冠體在焊接受熱後形成鋁鎳合金，形成一電池的外殼。 Based on this, the present invention mainly achieves the foregoing objects and effects by the following technical means, which is a method for sealing a battery, for forming an aluminum casing having at least one end of one end and having at least one opening Corresponding to the battery casing formed by the aluminum crown covering the opening of the aluminum casing, the method comprises at least; (a) the step of preparing the material: forming the required aluminum casing and aluminum crown by die casting, aluminum extrusion, etc. (b) a step of vapor deposition at the joint: a corrosion-resistant metal layer is deposited on the joint surface of the aluminum shell or/and the aluminum crown by an evaporation technique, and the corrosion-resistant metal layer may be selected from nickel ( Metal of Ni); (c) Step of filling the material: filling the material of the battery in the aluminum casing; (d) step of laser welding: covering the aluminum crown with the aluminum casing The port is welded by laser welding technology, and the corrosion-resistant metal layer and the aluminum casing or/and the aluminum crown are heated to form an aluminum-nickel alloy to form an outer casing of the battery.
藉此，本發明之電池封冠之方法及其結構透過前述技術手段之實現，能大幅增加其附加價值，並提高其經濟效益。 Thereby, the method for sealing the battery of the present invention and the structure thereof are realized by the foregoing technical means, and the added value thereof can be greatly increased, and the economic benefit thereof can be improved.
為使 貴審查委員能進一步了解本發明的構成、特徵及其他目的，以下乃舉本發明之較佳實施例，並配合圖式詳細說明如後，同時讓熟悉該項技術領域者能夠具體實施。 The preferred embodiments of the present invention are set forth in the accompanying drawings, and in the claims
(10)‧‧‧外殼 (10) ‧‧‧ Shell
(11)‧‧‧鋁殼體 (11)‧‧‧Aluminum housing
(15)‧‧‧鋁冠體 (15)‧‧‧Aluminum crown
(16)‧‧‧V形楔口 (16)‧‧‧V-shaped wedge
(50)‧‧‧外殼 (50) ‧‧‧ Shell
(51)‧‧‧鋁殼體 (51)‧‧‧Aluminum housing
(52)‧‧‧開口 (52) ‧ ‧ openings
(53)‧‧‧抗腐蝕金屬層 (53) ‧ ‧ anti-corrosion metal layer
(55)‧‧‧鋁冠體 (55)‧‧‧Aluminum crown
(56)‧‧‧凸塞部 (56) ‧‧‧The plug
(a)‧‧‧備料 (a) ‧ ‧ ‧ Preparation
(b)‧‧‧接合處蒸鍍 (b) ‧ ‧ joint evaporation
(c)‧‧‧材料充填 (c) ‧‧‧Material filling
(d)‧‧‧雷射焊接 (d) ‧‧‧Laser welding
(e)‧‧‧表面處理 (e) ‧ ‧ surface treatment
第一圖：係習式鋰電池外殼之焊接狀態示意圖。 The first picture is a schematic diagram of the welding state of the lithium battery case.
第二圖：係習式鋰電池外殼之另一焊接狀態示意圖。 Second figure: Schematic diagram of another welding state of a conventional lithium battery case.
第三圖：係本發明電池封冠之方法的流程示意圖。 The third figure is a schematic flow chart of the method for sealing a battery of the present invention.
第四圖：係本發明電池封冠之結構的側視剖面示意圖，供說明其各元件之態樣及其相對關係。 Fig. 4 is a side cross-sectional view showing the structure of the battery seal of the present invention for explaining the state of each element and its relative relationship.
第五圖：係本發明電池封冠結構中鋁殼體形成抗腐蝕金屬層之側視剖面示意圖。 Fig. 5 is a side cross-sectional view showing the formation of a corrosion-resistant metal layer in the aluminum casing of the battery sealing structure of the present invention.
第六圖：係本發明電池封冠結構之組成剖面示意圖。 Fig. 6 is a schematic cross-sectional view showing the structure of the battery sealing structure of the present invention.
本發明係一種電池封冠之方法及其結構，隨附圖例示之本發明的具體實施例及其構件中，所有關於前與後、左與右、頂部與底部、上部與下部、以及水平與垂直的參考，僅用於方便進行描述，並非限制本發明，亦非將其構件限制於任何位置或空間方向。圖式與說明書中所指定的尺寸，當可在不離開本發明之申請專利範圍內，根據本發明之具體實施例的設計與需求而 進行變化。 The present invention is a method of sealing a battery and its structure, and the specific embodiments of the present invention and its components, as illustrated in the accompanying drawings, all relate to front and rear, left and right, top and bottom, upper and lower, and horizontal The vertical reference is for convenience of description only and is not intended to limit the invention, nor to limit its components to any position or spatial orientation. The drawings and the dimensions specified in the specification, while not departing from the scope of the invention, are based on the design and needs of the specific embodiments of the invention. Make changes.
而本發明電池封冠之方法係如第三圖所示，其包含有(a)備料、(b)接合處蒸鍍、(c)材料充填、(d)雷射焊接及(e)表面處理等步驟，而完成電池封冠之結構。且該電池封冠之結構則係如第四圖所示，其係由一中空鋁殼體(51)及至少一鋁冠體(55)所構成，其中該鋁殼體(51)兩端中至少一端形成有一開口(52)，而該等鋁冠體(55)具有一對應鋁殼體(51)之凸塞部(56)，使鋁冠體(55)可利用凸塞部(56)塞設封閉鋁殼體(51)之開口(52)，而形成鋰電池之一外殼(50)，令電解質溶液等電池材料可充填於外殼(50)內部，以上所述之鋰電池外殼(50)的製備及其結構與現有者相同，且非本發明之特色所在，容不再贅述；至於本發明之特色結構，則請進一步參看第三、四及五圖所示，首先，進行(a)備料之步驟：係以壓鑄、鋁擠等方式加工形成電池之外殼(50)所需的鋁殼體(51)與鋁冠體(55)，以利後續加工；接著，進行(b)接合處蒸鍍之步驟：完成鋁殼體(51)與鋁冠體(55)之備料後，可在該鋁殼體(51)鄰近開口(52)或/及鋁冠體(55)接近凸塞部(56)的內、外表面利用蒸鍍技術鍍設有一抗腐蝕金屬層(53)，本發明以鋁殼體(51)鄰近開口(52)內、外表面為主要實施例，而該抗腐蝕金屬層(53)可以選擇自鎳(Ni)、銀(Ag)之金屬，供其與鋁受熱生成鋁鎳合金(Ni-Al)或鋁銀合金(Ag-Al)，且該抗腐蝕金屬層(53)之厚度為1~2μm，使抗腐蝕金屬層(53)可以均勻生成於鋁殼體 (51)與鋁冠體(55)的接合處表面；之後，進行(c)材料充填之步驟：完成該抗腐蝕金屬層(53)之蒸鍍後，將電池之材料如電解質溶液等充填於鋁殼體(51)內；緊接著，進行(d)雷射焊接之步驟：在完成材料充填後，將鋁冠體(55)蓋設於鋁殼體(51)之開口(52)，使鋁冠體(55)與鋁殼體(51)接合處表面均具有抗腐蝕金屬層(53)，並利用雷射焊接技術進行焊接，使該抗腐蝕金屬層(53)與鋁殼體(51)或/及鋁冠體(55)在焊接受熱後形成鋁基合金，例如鋁鎳合金、鋁銀合金，使鋁殼體(51)與鋁冠體(55)的接合處產生具有阻擋電解質溶液腐蝕鋁焊接交界處之作用，有效防止發生洩漏的現象，而形成電池之外殼(50)。且前述(a)備料之步驟可以於該鋁殼體(51)與鋁冠體(55)於銜接處一樣可形成一楔形缺口【如第二圖所示】，供於蒸鍍抗腐蝕金屬層(53)後，再進行填料焊接；以及最後，進行(e)表面處理之步驟，於完成鋁冠體(55)與鋁殼體(51)接合處之焊接後，可對鋁殼體(51)與鋁冠體(55)的接合處外部表面進行表面處理，如磨平、電鍍、陽極處理等，使成型之外殼(50)表面能獲得平整、且一致的色澤，提升其美觀。 The method for sealing a battery of the present invention is as shown in the third figure, which comprises (a) preparation, (b) junction evaporation, (c) material filling, (d) laser welding, and (e) surface treatment. Wait for the steps to complete the structure of the battery seal. And the structure of the battery seal is as shown in the fourth figure, which is composed of a hollow aluminum shell (51) and at least one aluminum crown (55), wherein the aluminum shell (51) is at both ends At least one end is formed with an opening (52), and the aluminum crown (55) has a male plug portion (56) corresponding to the aluminum housing (51), so that the aluminum crown (55) can utilize the male plug portion (56) Plugging an opening (52) of the aluminum casing (51) to form a casing (50) of the lithium battery, so that a battery material such as an electrolyte solution can be filled inside the casing (50), and the lithium battery casing (50) described above The preparation and structure are the same as those of the prior art, and are not described in the present invention. For the characteristic structure of the present invention, please refer to the third, fourth and fifth figures. First, (a) Step of preparing the material: processing the aluminum casing (51) and the aluminum crown (55) required for forming the outer casing (50) of the battery by die casting, aluminum extrusion, etc., for subsequent processing; then, performing (b) joint Step of vapor deposition: after the preparation of the aluminum casing (51) and the aluminum crown (55), the convex portion of the aluminum casing (51) adjacent to the opening (52) or/and the aluminum crown (55) Inner and outer surfaces of (56) A corrosion-resistant metal layer (53) is plated by an evaporation technique. The present invention has an aluminum casing (51) adjacent to the inner and outer surfaces of the opening (52) as a main embodiment, and the corrosion-resistant metal layer (53) can be selected from a metal of nickel (Ni) or silver (Ag) for heating with aluminum to form an aluminum-nickel alloy (Ni-Al) or an aluminum-silver alloy (Ag-Al), and the thickness of the corrosion-resistant metal layer (53) is 1~ 2μm, the corrosion-resistant metal layer (53) can be uniformly formed in the aluminum shell (51) a joint surface with the aluminum crown (55); thereafter, (c) a step of filling the material: after the vapor deposition of the corrosion-resistant metal layer (53) is completed, a battery material such as an electrolyte solution or the like is filled in In the aluminum casing (51); followed by (d) laser welding step: after the material is filled, the aluminum crown (55) is placed on the opening (52) of the aluminum casing (51), so that The joint surface of the aluminum crown (55) and the aluminum shell (51) has a corrosion-resistant metal layer (53) and is welded by a laser welding technique to make the corrosion-resistant metal layer (53) and the aluminum shell (51). Or / and the aluminum crown (55) forms an aluminum-based alloy after welding, such as an aluminum-nickel alloy, an aluminum-silver alloy, and a barrier electrolyte solution is produced at the junction of the aluminum casing (51) and the aluminum crown (55). Corrosion of the aluminum welding junction to effectively prevent leakage, and form the battery casing (50). And the step (a) preparing the material may form a wedge-shaped notch at the junction of the aluminum shell (51) and the aluminum crown (55) [as shown in the second figure] for vapor-depositing the corrosion-resistant metal layer. (53), after the filler welding; and finally, the (e) surface treatment step, after the completion of the welding of the aluminum crown (55) and the aluminum shell (51) joint, the aluminum shell (51) The surface of the joint with the aluminum crown (55) is surface-treated, such as smoothing, electroplating, anodizing, etc., so that the surface of the formed outer casing (50) can obtain a flat, uniform color and enhance its appearance.
藉此，組構成一抗腐蝕性、且能提高焊接強度之電池封冠之方法及其結構者。 Thereby, the group constitutes a method and structure for a battery seal which is corrosion-resistant and can improve the welding strength.
經由前述之說明可知，本發明電池封冠之方法及其結構透過於鋁殼體(51)與鋁冠體(55)的焊接交界在焊接前蒸 鍍有一選自鎳(Ni)、銀(Ag)之抗腐蝕金屬層(53)進行防護，使該抗腐蝕金屬層(53)與在焊接受熱後形成對應鋁鎳合金、鋁銀合金之鋁基合金，解決鋰電池殼焊接腐蝕、電解質熱解、焊縫腐蝕、熔接強度不足、形成毛孔、變形、焊接裂紋及洩漏等問題，令鋰電池使用過程中，不會因電解質溶液的而發生解離現象，達到避免焊接交界處腐蝕的問題，並加強焊接強度與提高拉伸強度，增進鋰電池使用過程的安全性，可有效避免鋰電池的洩漏問題，從而延長其使用壽命。 It can be seen from the foregoing description that the method for sealing a battery of the present invention and the structure thereof are transmitted through the welding boundary between the aluminum casing (51) and the aluminum crown (55) before steaming. The corrosion-resistant metal layer (53) selected from nickel (Ni) and silver (Ag) is plated for protection, and the corrosion-resistant metal layer (53) is formed into an aluminum-based alloy corresponding to an aluminum-nickel alloy or an aluminum-silver alloy after being heated by welding. The alloy solves the problems of welding corrosion of the lithium battery shell, electrolyte pyrolysis, weld corrosion, insufficient welding strength, formation of pores, deformation, welding cracks and leakage, so that the lithium battery does not dissociate due to the electrolyte solution during use. To avoid the problem of corrosion at the welding junction, and to strengthen the welding strength and increase the tensile strength, improve the safety of the lithium battery during use, can effectively avoid the leakage of the lithium battery, thereby extending its service life.
同時，本發明進一步可以讓鋰電池產品朝精密化、輕量化、高品質及高強度的方向發展，有效提高質量，並能產生降低成本的優勢。 At the same time, the invention can further develop the lithium battery product in the direction of precision, light weight, high quality and high strength, effectively improve the quality, and can produce the advantage of reducing the cost.
藉此，可以理解到本發明為一創意極佳之創作，除了有效解決習式者所面臨的問題，更大幅增進功效，且在相同的技術領域中未見相同或近似的產品創作或公開使用，同時具有功效的增進，故本發明已符合發明專利有關「新穎性」與「進步性」的要件，乃依法提出申請發明專利。 In this way, it can be understood that the present invention is an excellent creation, in addition to effectively solving the problems faced by the practitioners, and greatly improving the efficiency, and the same or similar product creation or public use is not seen in the same technical field. At the same time, it has the effect of improving the efficiency. Therefore, the present invention has met the requirements for "novelty" and "progressiveness" of the invention patent, and is filed for patent application according to law.
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| TW201523976A (en) * | 2013-05-21 | 2015-06-16 | Lg Chemical Ltd | Pouch type secondary battery and method of manufacturing the same |
| TW201526349A (en) * | 2013-09-05 | 2015-07-01 | Lg Chemical Ltd | Prismatic battery cell having battery case comprising two or more members |
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| TW201523976A (en) * | 2013-05-21 | 2015-06-16 | Lg Chemical Ltd | Pouch type secondary battery and method of manufacturing the same |
| TW201526349A (en) * | 2013-09-05 | 2015-07-01 | Lg Chemical Ltd | Prismatic battery cell having battery case comprising two or more members |
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