TW201926765A - High-sealing integrated battery case and molding method thereof which can shorten the manufacturing process and reduce the manufacturing cost - Google Patents
High-sealing integrated battery case and molding method thereof which can shorten the manufacturing process and reduce the manufacturing cost Download PDFInfo
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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
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本發明是有關於一種鋰電池,特別是指一種高密封性一體成型電池外殼及其成型方法。The invention relates to a lithium battery, in particular to a high-tightness integrally formed battery casing and a molding method thereof.
鋰鐵電池為近年來持續受到關注的新型態電池,因為其具有諸多優點,未來成為電池發展主流之趨勢銳不可擋,但是其體積大、需要採多個電池串聯之方式,以及價格高的問題,導致其目前大多使用於電動車輛載具上。而汽車鋰鐵電池的使用量極大,普通小客車約得使用32113規格的電池400顆,使得電池在品質及重量控管要求高,目前在電池外殼製造上,除了製程繁複、製造期程長外,難以穩定控制的精度問題,導致成品良率約在95%左右,無法應付來自全球高階鋰鐵電池之訂單需求。Lithium-iron battery is a new type of battery that has received continuous attention in recent years. Because of its many advantages, it will become an unstoppable trend in the future of battery development. However, it is bulky, requires multiple batteries in series, and is expensive. The problem is that it is currently mostly used on electric vehicle vehicles. The use of lithium-ion batteries for automobiles is extremely large. Ordinary passenger cars use about 400 batteries of 32113 specifications, which makes the battery have high requirements on quality and weight control. At present, in the manufacture of battery casings, in addition to complicated process and long manufacturing period. It is difficult to control the accuracy of the control, resulting in a finished product yield of about 95%, unable to cope with the demand for orders from the world's high-end lithium iron batteries.
就市場需求而言,目前在全球各國的施行政策上,都以新興能源電池為重大發展指標,其中以中國大陸最為積極,在電動汽車方面,中國大陸官方認為現有汽車工業無法追上已趨近頂尖歐、美、日各國,因此,在電動車環境還沒成熟之前,中國大陸將致力於此一產業之發展,以追求未來之極致卓越,並藉此躍升新興汽車工業大國。As far as market demand is concerned, the current implementation policies of countries around the world are based on emerging energy batteries, with China's mainland being the most active. In terms of electric vehicles, mainland China believes that the existing automobile industry cannot catch up. Top European, American and Japanese countries, therefore, before the electric vehicle environment is yet mature, China will be committed to the development of this industry, in order to pursue the ultimate excellence in the future, and to leap into the emerging automobile industry.
中國大陸政府因應物聯網的發展趨勢和環保節能意識抬頭,已明確將電動車列入重點發展產業。大陸科技部網站2015年2月16日發佈《國家重點研發計劃新能源汽車重點專項實施方案(徵求意見稿)》,指出2020年將建立完善的電動汽車動力系統科技體系和產業鏈,實現新能源汽車保有量達到500萬輛。In response to the development trend of the Internet of Things and the awareness of environmental protection and energy conservation, the Chinese mainland government has clearly listed electric vehicles as key development industries. On February 16, 2015, the website of the Ministry of Science and Technology of the People's Republic of China released the “National Key R&D Plan New Energy Vehicle Key Special Implementation Plan (Draft for Comment)”, pointing out that the 2020 electric vehicle power system technology system and industrial chain will be established to realize new energy. The car ownership reached 5 million.
目前鋰電池外殼之製造方式,主要採用拉延與捲繞兩種方式。以拉延方式進行外殼之製造,可以採用連續模的方式,且將薄鋼板透過五到六次之沖壓,得到單向開放之深孔圓筒,但是採用拉延方式,因為鋼材的延展性低,所以是利用外型形變的方式,因此具有良率較低的問題,無法穩定控制每一壁厚之平均性,多半應用在單一價格低的一次性電池外殼製作上。採用拉延方式製成的電池外殼,壁厚約0.9㎜,單顆重量為102.4g,良率95%,產能約2700個/天,雖然產能高,但成品的尺寸受限。At present, the manufacturing method of the lithium battery casing mainly adopts two methods of drawing and winding. The shell is manufactured by drawing, and the continuous mold can be used, and the steel sheet is punched five to six times to obtain a one-way open deep hole cylinder, but the drawing method is adopted because the steel has low ductility. Therefore, it is a method of utilizing external deformation, so it has a problem of low yield, and it is impossible to stably control the average of each wall thickness, and most of them are applied to a single-price battery case with a low price. The battery casing made by drawing has a wall thickness of about 0.9 mm, a single weight of 102.4 g, a yield of 95%, and a production capacity of about 2,700 per day. Although the production capacity is high, the size of the finished product is limited.
另外,採用捲繞之方式,是透過自動化機械之應用,將薄鋼板彎折成圓筒狀,利用裁切與焊接的方式,得到壁厚一致性高的單向開放之深孔圓筒,此方式製成的電池外殼所產生的缺點在於:難以控制圓筒之真圓度與同心度,並且成品有一焊接不平整接面。採用捲繞方式製成的電池外殼,壁厚約1㎜,單顆重量為98.5g,產能約2500個/天,漏液風險高。In addition, by means of winding, the thin steel plate is bent into a cylindrical shape by the application of an automatic machine, and a one-way open deep hole cylinder having a high wall thickness consistency is obtained by means of cutting and welding. The disadvantage of the battery casing produced by the method is that it is difficult to control the roundness and concentricity of the cylinder, and the finished product has a welded uneven joint. The battery casing made by winding method has a wall thickness of about 1 mm, a single weight of 98.5 g, a production capacity of about 2,500 per day, and a high risk of liquid leakage.
以上兩種方式在最後仍需要進行套蓋與焊接的動作,才能使電池外殼具有一正極接點,整體之製程較為繁複耗時,在單一電池上差異不明顯,但是在動輒需要上千百顆的大型車用電池上,就會顯現出可觀的價差。In the last two ways, the cover and the welding action are still needed in order to make the battery case have a positive contact. The overall process is complicated and time consuming, and the difference is not obvious on a single battery, but it needs thousands of pieces in the moving state. On the large car battery, there will be a considerable price difference.
因此,本發明之一目的,即在提供一種結構簡單、製造組配容易、可降低製造成本且輕量化的高密封性一體成型電池外殼。Accordingly, it is an object of the present invention to provide a highly sealed integrally formed battery case which is simple in structure, easy to assemble, and which can reduce manufacturing cost and is lightweight.
本發明之另一目的,即在提供一種可縮短製造期程、客降低製造成本的高密封性一體成型電池外殼的成型方法。Another object of the present invention is to provide a molding method for a highly sealed integrally formed battery case which can shorten the manufacturing period and reduce the manufacturing cost.
於是,本發明高密封性一體成型電池外殼,沿一軸線延伸且呈中空筒狀,並採用鋁合金材質製成,該電池外殼包含一底壁及一周壁。該底壁垂直於該軸線,並包括一外側面、一相反於該外側面的內側面,以及一體成型地凸於該外側面的一電極。該周壁一體成型地由該底壁周緣沿該軸線延伸而成,且圍繞該軸線呈連續圓筒狀,該周壁與該底壁共同界定出一呈單向開放的容納空間。Therefore, the high-tightness integrally formed battery case of the present invention extends along an axis and has a hollow cylindrical shape, and is made of an aluminum alloy material, and the battery case comprises a bottom wall and a peripheral wall. The bottom wall is perpendicular to the axis and includes an outer side surface, an inner side surface opposite the outer side surface, and an electrode integrally formed to protrude from the outer side surface. The peripheral wall is integrally formed by the peripheral edge of the bottom wall along the axis, and has a continuous cylindrical shape around the axis, and the peripheral wall and the bottom wall together define a unidirectional open receiving space.
本發明高密封性一體成型電池外殼的成型方法,包含下列步驟:(A)製備一胚材,以及一沖壓設備,該胚材採用鋁合金材質製成塊狀,該沖壓設備包括一沖模、一成型沖頭,以及一整型沖頭,該沖模具有一模穴,該模穴由一模底面,以及一由該模底面周緣沿軸向延伸而成的內模面共同界定而成,該模底面凹設有一與該模穴相連通的凹孔,該成型沖頭與該沖模同心設置且設置於該沖模一側,且沿軸向延伸呈柱狀,該整型沖頭可與該沖模同心設置且設置於該沖模一側,且沿軸向延伸呈柱狀,該整型沖頭具有一外周面,以及多數凸設於該外周面且間隔設置的凸環。(B)成型作業:將該胚材置入該沖模的模穴中,並利用該成型沖頭相對於該沖模進行沖壓成型動作,可形成一粗胚,該粗胚呈單向開放的中空圓筒狀。(C) 整型作業:該粗胚留置於該沖模的模穴中,並利用該整型沖頭相對於該沖模進行沖壓整型動作,利用該等凸環再繼續對粗胚進行拉延整型且成型為一電池外殼,該電池外殼包含一底壁及一周壁,該底壁垂直於一軸線,並包括一相對於該模底面的外側面、一相反於該外側面的內側面,以及一體成型地凸於該外側面且透過該凹孔所塑形而成的一電極,該周壁由該底壁周緣沿該軸線延伸而成,且圍繞該軸線呈連續延伸狀,該周壁與該底壁共同界定出一呈單向開放的容納空間。The method for molding a high-tightness integrally formed battery case of the present invention comprises the following steps: (A) preparing a blank material, and a punching device, wherein the blank material is formed into a block shape using an aluminum alloy material, and the punching device comprises a die, a a forming punch, and an integral punch having a cavity formed by a die bottom surface and an inner die face extending axially from a periphery of the die bottom surface, the die The bottom surface is concavely provided with a concave hole communicating with the cavity, the forming punch is disposed concentrically with the die and disposed on one side of the die, and extends in a column shape in the axial direction, and the integral punch can be concentric with the die And disposed on one side of the die and extending in a column shape in the axial direction, the integral punch has an outer peripheral surface, and a plurality of convex rings protruding from the outer peripheral surface and spaced apart from each other. (B) forming operation: placing the embryo material into the cavity of the die, and performing a press forming operation with respect to the die by using the forming punch, to form a rough embryo, the rough embryo is a hollow circle with one-way opening Cylindrical. (C) Integer operation: the coarse embryo is placed in the cavity of the die, and the integral punch is used to perform a stamping and shaping operation with respect to the die, and the roughing is continued to be used for drawing the rough embryo. Forming and forming a battery case, the battery case includes a bottom wall and a peripheral wall, the bottom wall being perpendicular to an axis, and including an outer side opposite to the bottom surface of the mold, an inner side opposite to the outer side, and An electrode integrally formed on the outer side surface and shaped by the recessed hole, the peripheral wall extending from the peripheral edge of the bottom wall along the axis, and extending continuously around the axis, the peripheral wall and the bottom The walls together define a unidirectional open containment space.
本發明之功效在於:利用上述步驟所製成的電池外殼,不僅製程簡單、可縮短製造期程,且可提高成品良率與剛性,亦具有輕量化及降低成本之功效,非常符合產業大量製造的需求。The utility model has the advantages that the battery casing made by the above steps has the advantages of simple process, shortened manufacturing period, improved product yield and rigidity, light weight reduction and cost reduction, and is in line with industrial mass production. Demand.
在本發明被詳細描述之前,應當注意在以下的說明內容中,類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.
參閱圖1與圖2,本發明高密封性一體成型電池外殼10之一實施例,沿一軸線L延伸且呈中空筒狀,並採用鋁合金材質製成,該電池外殼包含一底壁11及一周壁12。Referring to FIG. 1 and FIG. 2, an embodiment of the high-tightness integrally formed battery case 10 of the present invention extends along an axis L and has a hollow cylindrical shape and is made of an aluminum alloy material. The battery case includes a bottom wall 11 and One week wall 12.
該底壁11垂直於該軸線L,並包括一外側面111、一相反於該外側面111的內側面112、一對應該軸線L且一體成型地凸於該外側面111的電極113、一對應該軸線L且一體成型地凸於該內側面112的內凸部114,以及一貫穿該外側面111與該內側面112的穿孔115。The bottom wall 11 is perpendicular to the axis L, and includes an outer side surface 111, an inner side surface 112 opposite to the outer side surface 111, a pair of electrodes 113 corresponding to the axis L and integrally formed on the outer side surface 111, and a pair of electrodes 113 The inner protrusion 114 of the inner side surface 112 and the through hole 115 penetrating the outer side surface 111 and the inner side surface 112 should be integrally formed.
該周壁12一體成型地由該底壁11周緣沿該軸線L延伸而成,且圍繞該軸線L呈連續圓筒狀,該周壁12與該底壁11共同界定出一呈單向開放的容納空間13,該周壁12垂直於該軸線L的壁厚t大於0.45㎜,小於0.9㎜,本實施例的壁厚t為0.5㎜。The peripheral wall 12 is integrally formed by the periphery of the bottom wall 11 along the axis L, and has a continuous cylindrical shape around the axis L. The peripheral wall 12 and the bottom wall 11 together define a unidirectional open receiving space. 13. The wall thickness t of the peripheral wall 12 perpendicular to the axis L is greater than 0.45 mm, less than 0.9 mm, and the wall thickness t of the present embodiment is 0.5 mm.
該電池外殼10總重量大於20g,小於25g,本實施例的電池外殼10為22.8g。且該電池外殼10之鋁合金材質組分為矽(Si)0.6%、鐵(Fe)0.7%,銅(Cu)0.05~0.20%、錳(Mn)1.0~1.5%、鋅(Zn)0.10%,其它微量元素0.15%,餘量為鋁(Al)。The battery case 10 has a total weight of more than 20 g and less than 25 g, and the battery case 10 of the present embodiment is 22.8 g. The aluminum alloy material component of the battery casing 10 is 矽(Si) 0.6%, iron (Fe) 0.7%, copper (Cu) 0.05 to 0.20%, manganese (Mn) 1.0 to 1.5%, and zinc (Zn) 0.10%. The other trace elements are 0.15%, and the balance is aluminum (Al).
本發明用來製造高密封性一體成型電池外殼10的成型方法,包含下列步驟:The method for forming a highly hermetic integrally formed battery can 10 of the present invention comprises the following steps:
步驟一:配合參閱圖3,製備一胚材1,以及一沖壓設備2,該胚材1採用鋁合金材質(參上述鋁合金材質組分)製成塊狀,該沖壓設備2包括一沖模100、一成型沖頭200,以及一整型沖頭300。該沖模100具有一模穴110,該模穴110由一模底面120,以及一由該模底面120周緣沿軸向延伸而成的內模面130共同界定而成,該模底面120凹設有一與該模穴110相連通的凹孔140。該成型沖頭200與該沖模100同心設置且設置於該沖模100一側,且沿軸向延伸呈柱狀,該成型沖頭200具有一第一頂端210、一沿軸向相反於該第一頂端210的第一沖擊端220,以及一由該第一頂端210延伸至該第一沖擊端220的外表面230,該外表面230具有一趨近於該第一頂端210的第一擴徑段240、一由該第一擴徑段240朝該第一沖擊端220延伸的第一窄徑段250、一對應於該第一沖擊端220且銜接於該第一窄徑段250一側的沖擊段260,以及一由該第一沖擊端220凹設的沉孔270,該第一窄徑段250的圓徑小於該第一擴徑段240及該沖擊段260,該沖擊段260的圓徑小於該第一擴徑段240。該整型沖頭300可與該沖模100同心設置且設置於該沖模100一側,且沿軸向延伸呈柱狀,該整型沖頭300具有一第二頂端310、一沿軸向相反於該第二頂端310的第二沖擊端320、一由該第二頂端310延伸至該第二沖擊端320的外周面330、多數凸設於該外周面330且沿軸向間隔設置的凸環340,以及一由該第二頂端310延伸至該第二沖擊端320的貫孔350。Step 1: Referring to FIG. 3, a blank material 1 is prepared, and a punching device 2 is formed. The blank material 1 is made of an aluminum alloy material (refer to the aluminum alloy material component described above), and the punching device 2 includes a die 100. A forming punch 200, and an integral punch 300. The die 100 has a cavity 110 defined by a die bottom surface 120 and an inner die face 130 extending axially from the periphery of the die bottom surface 120. The die bottom surface 120 is recessed. a recess 140 that communicates with the cavity 110. The forming punch 200 is disposed concentrically with the die 100 and disposed on one side of the die 100 and extends in a column shape in the axial direction. The forming punch 200 has a first top end 210 and an axial direction opposite to the first a first impact end 220 of the top end 210 and an outer surface 230 extending from the first top end 210 to the first impact end 220, the outer surface 230 having a first expanded diameter section proximate to the first top end 210 240, a first narrow diameter section 250 extending from the first diameter expanding section 240 toward the first impact end 220, and an impact corresponding to the first impact end 220 and engaging the side of the first narrow diameter section 250 a section 260, and a counterbore 270 recessed by the first impact end 220, the circular diameter of the first narrow diameter section 250 is smaller than the first diameter expansion section 240 and the impact section 260, and the diameter of the impact section 260 Less than the first expanded diameter section 240. The integral punch 300 can be disposed concentrically with the die 100 and disposed on one side of the die 100, and extends in a column shape in the axial direction. The integral punch 300 has a second tip 310 and an axial direction opposite to a second impact end 320 of the second top end 310, an outer peripheral surface 330 extending from the second top end 310 to the second impact end 320, and a plurality of convex rings 340 protruding from the outer peripheral surface 330 and axially spaced apart And a through hole 350 extending from the second top end 310 to the second impact end 320.
步驟二:配合參圖4及圖6,進行成型作業,將該胚材1置入該沖模100的模穴110中,並利用該成型沖頭200相對於該沖模100進行沖壓成型動作,可形成一粗胚10’,該粗胚10’呈單向開放的中空圓筒狀。在成型作業中使用磷酸鹽溶液進行潤滑處理。Step 2: In conjunction with FIG. 4 and FIG. 6, a molding operation is performed, the blank material 1 is placed in the cavity 110 of the die 100, and the forming punch 200 is subjected to a press forming operation with respect to the die 100, which can be formed. A coarse embryo 10' having a hollow cylindrical shape that is open in one direction. The phosphate solution is used for lubrication treatment in the molding operation.
步驟三:配合參圖5及圖6,進行整型作業,該粗胚10’留置於該沖模100的模穴110中,並使該沖模100位移至對應於該整型沖頭300,利用該整型沖頭300相對於該沖模100進行沖壓整型動作,且利用該等凸環340再繼續對粗胚10’進行拉延整型且成型為該電池外殼10,且使該電池外殼10包含一體成型的底壁11、該周壁12、凸於該外側面111的電極113、凸於該內側面112的內凸部114。在整型作業中使用磷酸鹽溶液進行潤滑處理。Step 3: Performing a shaping operation in conjunction with FIG. 5 and FIG. 6, the coarse blank 10' is left in the cavity 110 of the die 100, and the die 100 is displaced to correspond to the integral punch 300, and the The forming punch 300 performs a press forming operation with respect to the die 100, and continues to draw and shape the rough blank 10' by the convex ring 340 and form the battery casing 10, and the battery casing 10 is included The integrally formed bottom wall 11 , the peripheral wall 12 , the electrode 113 protruding from the outer side surface 111 , and the inner convex portion 114 protruding from the inner side surface 112 . Phosphate solution is used for lubrication in the finishing operation.
步驟四:對該底壁11進行沖製該穿孔115的作業,即可製得如圖1、圖2所示的電池外殼10。Step 4: The operation of punching the through hole 115 is performed on the bottom wall 11, and the battery case 10 shown in Figs. 1 and 2 can be obtained.
利用本發明上述的成型方法,以及所製成的電池外殼10,具有下列功效:With the above molding method of the present invention, and the battery casing 10 produced, the following effects are obtained:
一、利用一體成型製程可以提高成品的良率(99%)及剛性,沒有傳統組裝、焊接所遭遇到的問題,也因為一體成型的結構,使得產品不易產生結構脆弱點,較無斷裂、破損等問題發生。一體成型的製程,也較為精簡,可以縮短產品製造期程。First, the use of integrated molding process can improve the yield (99%) and rigidity of the finished product, without the problems encountered in traditional assembly and welding, and because of the integrated structure, the product is not easy to produce structural fragile points, and there is no breakage or damage. And so on. The one-piece process is also relatively streamlined, which can shorten the manufacturing process.
二、採用冷鍛製造無須進行二此加工,鍛出後即為成品,表面光滑無瑕疵,採用連續過模的方式,適合大量製造,並且具備有極高的製造精度,且透過冷鍛時之金屬材料延展成型,提升物性與強度,製程中無須加熱亦無排放冷卻液之問題,是一種符合環保之鍛造方式。Second, the use of cold forging does not require two such processing, after the forging is the finished product, the surface is smooth and flawless, using continuous over-mold, suitable for mass production, and has a very high manufacturing precision, and through cold forging The metal material is stretched and formed to enhance the physical properties and strength. There is no need to heat or discharge the coolant in the process. It is an environmentally friendly forging method.
三、針對該電池外殼10製作,開發專用之沖模100、成型沖頭200及整型沖頭300,經由成型、整型及沖孔三道工序,使成品可控制在真圓度100μm及同心度30μm的高精度。3. For the battery casing 10, the special die 100, the forming punch 200 and the integral punch 300 are developed, and the finished product can be controlled at a roundness of 100 μm and concentricity through three processes of forming, shaping and punching. High precision of 30μm.
四、該電池外殼10使用高純度的鋁合金材料進行加工,具有質量輕、強度高、耐腐蝕、導電性佳等優點,與傳統之電池外殼多採用鋼材製作,鋁合金材質具有質量輕、剛性強,管壁可以做得更薄,因此可大幅降低材料重量。4. The battery casing 10 is processed by using high-purity aluminum alloy material, and has the advantages of light weight, high strength, corrosion resistance, good electrical conductivity, etc., and is made of steel with a traditional battery casing, and the aluminum alloy material has light weight and rigidity. Strong, the wall can be made thinner, thus significantly reducing the weight of the material.
五、在成型作業及整型作業均中使用磷酸鹽溶液進行潤滑處理,可以提高鋁合金沖壓穩定性,並使鋁合金能夠順利於模具內成型,使得原本直徑32㎜、高10.5㎜之扁平圓塊胚料1,可以沖壓成外徑32㎜、內徑31㎜、高119㎜之中空圓柱,將近10倍之變形量,因為無須再經過其他步驟,冷鍛完成後即為成品,且表面光滑無瑕疵,具有較高的穩定性與製造精度。再者,使用磷酸鹽溶液進行潤滑處理,可延長該沖壓設備2的使用壽命、降低成本。5. The use of phosphate solution for lubrication treatment in both forming and shaping operations can improve the stamping stability of the aluminum alloy and enable the aluminum alloy to be formed smoothly in the mold, resulting in a flat circle of 32 mm in diameter and 10.5 mm in height. The block material 1 can be stamped into a hollow cylinder with an outer diameter of 32 mm, an inner diameter of 31 mm and a height of 119 mm. The deformation amount is nearly 10 times, because no further steps are required, and the finished product is finished after cold forging, and the surface is smooth. Innocent, with high stability and manufacturing precision. Further, the use of the phosphate solution for the lubrication treatment can extend the service life of the press apparatus 2 and reduce the cost.
利用沖模100、成型沖頭200及整型沖頭300的配合,可製成一體成型的電池外殼10,省去套蓋與焊接的工序,並減少製程的不穩定性,且利用該成型沖頭200的外表面230具有第一擴徑段240、第一窄徑段250、沖擊段260等部位,能夠沖壓出深筒狀造型,粗胚10’不會因為初打收縮的效果導致成型沖頭200無法脫模,而該整型沖頭300是在該外周面330凸設有多道沿軸向間隔設置的凸環340(凸出外周面100μm),透過每一個凸環340的推壓,得到壁厚t一致0.5㎜,真圓度100μm,同心度30μm的深筒狀成品。By using the combination of the die 100, the forming punch 200 and the integral punch 300, the integrally formed battery casing 10 can be fabricated, the process of covering and welding can be omitted, and the instability of the process can be reduced, and the forming punch can be utilized. The outer surface 230 of the 200 has a first enlarged diameter section 240, a first narrow diameter section 250, an impact section 260 and the like, and can be punched out into a deep cylindrical shape, and the rough blank 10' does not cause the forming punch due to the initial shrinkage effect. The punch 300 is not detachable, and the entire punch 300 is provided with a plurality of axially spaced convex rings 340 (projecting outer peripheral surface 100 μm) protruding through the outer peripheral surface 330, and the pressing of each of the convex rings 340 is performed. A deep cylindrical product having a wall thickness t of 0.5 mm, a roundness of 100 μm, and a concentricity of 30 μm was obtained.
綜上所述,本發明高密封性一體成型電池外殼的結構簡單、製造容易,質輕,可降低成品,本發明高密封性一體成型電池外殼的成型方法,步驟簡單、可縮短製造期程,可降低成品,成品精度高,確實能達成本發明之目的。In summary, the high-sealing integrally formed battery case of the present invention has a simple structure, is easy to manufacture, is light in weight, and can reduce the finished product. The method for molding the high-sealing integrally formed battery case of the present invention has simple steps and can shorten the manufacturing process. The finished product can be reduced, and the precision of the finished product is high, and the object of the present invention can be achieved.
惟以上所述者,僅為本發明之實施例而已,當不能以此限定本發明實施之範圍,凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾,皆仍屬本發明專利涵蓋之範圍內。However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.
10‧‧‧電池外殼 10‧‧‧ battery case
L‧‧‧軸線L‧‧‧ axis
11‧‧‧底壁11‧‧‧ bottom wall
111‧‧‧外側面111‧‧‧Outside
112‧‧‧內側面112‧‧‧ inside
113‧‧‧電極113‧‧‧Electrode
114‧‧‧內凸部114‧‧‧Inside convex
115‧‧‧穿孔115‧‧‧Perforation
12‧‧‧周壁12‧‧‧Wall
13‧‧‧容納空間13‧‧‧Accommodation space
t‧‧‧壁厚T‧‧‧ wall thickness
1‧‧‧胚材1‧‧‧Bullet
2‧‧‧沖壓設備2‧‧‧ Stamping equipment
100‧‧‧沖模100‧‧‧ die
110‧‧‧模穴110‧‧‧ cavity
120‧‧‧模底面120‧‧‧Mold bottom
130‧‧‧內模面130‧‧‧Inner face
140‧‧‧凹孔140‧‧‧ recessed hole
200‧‧‧成型沖頭200‧‧‧forming punch
210‧‧‧第一頂端210‧‧‧ first top
220‧‧‧第一沖擊端220‧‧‧First impact end
230‧‧‧外表面230‧‧‧ outer surface
240‧‧‧第一擴徑段240‧‧‧First expansion section
250‧‧‧第一窄徑段250‧‧‧First narrow diameter section
260‧‧‧沖擊段260‧‧‧impact
270‧‧‧沉孔270‧‧‧ counterbore
300‧‧‧整型沖頭300‧‧‧Integral punch
310‧‧‧第二頂端310‧‧‧second top
320‧‧‧第二沖擊端320‧‧‧second impact end
330‧‧‧外周面330‧‧‧ outer perimeter
340‧‧‧凸環340‧‧‧ convex ring
350‧‧‧貫孔350‧‧‧through holes
10’‧‧‧粗胚 10’‧‧‧ rough embryo
本發明之其他的特徵及功效,將於參照圖式的實施方式中清楚地呈現,其中: 圖1是本發明高密封性一體成型電池外殼一實施例的一仰視立體圖; 圖2是該實施例的一剖面圖; 圖3是本發明高密封性一體成型電池外殼的成型方法一實施例所配合的一沖壓設備的平面示意圖; 圖4是該成型方法實施例之一成型沖頭的平面圖; 圖5是該成型方法實施例之整型沖頭的平面圖;及 圖6是該成型方法實施例之一製造流程示意圖。BRIEF DESCRIPTION OF THE DRAWINGS Other features and advantages of the present invention will be apparent from the embodiments of the present invention. FIG. 1 is a bottom perspective view of an embodiment of the high-seal integrally formed battery casing of the present invention; 3 is a plan view of a stamping apparatus in accordance with an embodiment of a method for molding a highly hermetic integrally formed battery case of the present invention; FIG. 4 is a plan view of a forming punch of one embodiment of the molding method; 5 is a plan view of the integral punch of the embodiment of the molding method; and FIG. 6 is a schematic view showing a manufacturing process of one embodiment of the molding method.
Claims (10)
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JP2005093239A (en) * | 2003-09-17 | 2005-04-07 | Sony Corp | Battery |
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