M382594 五、新型說明： 【新型所屬之技術領域】 本創作係關於一種鋰系列二次電池。 【先前技術】 傳統鋰離子電池大都由外殼、正負極柱（即正極柱28 和負極柱29 )、單個卷怒26、電解液組成，外殼包括外殼 主體27和蓋板25，如第19圖所示，正負極柱固定在蓋板 25上，卷芯26放入外殼主體27内，蓋板25與外殼主體 27焊接在一起形成一個密封的組合體，通過正負極柱向外 部負載供電，把儲存的化學能以電能的形式轉化出去。市 場上使用較多的鋰離子電池有鋼殼系列、鋁殼系列、軟包 .裝系列，這些電池都以性能優異.，輕便易於携帶等受到人 們的青睞。現實是，能源的緊缺，市場需要更高能量的集 合體電池儘快問世，鋰離子電池往高容量方向發展已經刻 不容緩，而傳統的鋰離子電池在高容量、動力型領域存在 很多的問題，這些問題嚴重的阻礙了鋰離子的發展。只有 革新傳統才能使鋰離子電池向更廣闊的領域推進。 現有的電池外殼在厚度方向上最小，高度也受到一定 的限制，這就必然會影響單顆電池的容量。傳統的技術都 是把一隻單個卷芯放入到一個外殼内，形成一個單體電 池；也有爲了增加單個電池的容量把2-3個卷芯連接在一 起，沿著電池外殼的高度方向放入（卷芯與外殼的殼壁平 行、與底部垂直），形成多個卷芯並聯的多卷芯單體電池。 3 由於受限制於外殼的厚度，卷芯的個數不可能超過很多， 限制了單體電池的容量增高。 如上該，鋰離子電池的殼體厚度較小，但是卷芯吸收 電解液後都會有膨脹，在充放電過程中由於鋰離子的嵌入 和脫出也會造成卷芯厚度的增加，如果卷芯太多，就會造 成電池膨脹，引起厚度增加，厚度大於外殼的原始厚度， 電池就會出現‘鼓肚，現象。同時，多個卷芯也會造成極 耳焊接的困難。 目前’鋰離子電池卷芯都存在兩個極耳，極耳是沿極 片寬度方向設置’兩個極耳都處於卷芯的最裏層成最外 層’並且從卷芯的同一侧引出，由於電池在充放電過程中 的熱效應都是通過極年釋放，所以會造成卷芯極耳弓丨出端 的溫度高於另一端，如果電池高倍率放電，産生的熱量會 更多’這樣就存在後大的安全隱憂，所以爲了把這個隱憂 2到最小’ 一般的鯉離子電池都不允許大電流充放電，也 就阻礙鐘離子電池動力性能。當然大電流放電還會影響到 電池的其他性能。 【新型内容】 本創作的目的在於針對現有鋰離子電池容量不高的 :瘦’提供一種能提高單體電池的容量和動力性能的鋰 系列二次電池。 本創作的目的是這樣實現的：本創作包括外殼、正負 極检、卷芯、正負極極耳、電解液，該外殼包括外殼主體 M382594 和蓋板’正負極柱固定在蓋板上， 組成，它們與外殼主體的多個單卷怒 卷心依上下方向排列，單卷芯的正且夕個事 左右兩端，該正負極 、°耳位为别設在其 正負極極耳位對應連接的兩側且與卷《的 接。 接正負極極耳與正負極柱對應電連M382594 V. New description: [New technology field] This series is about a lithium series secondary battery. [Prior Art] Conventional lithium ion batteries are mostly composed of a casing, positive and negative columns (i.e., positive electrode column 28 and negative electrode column 29), a single roll anger 26, and an electrolyte. The outer casing includes a casing body 27 and a cover plate 25, as shown in Fig. 19. The positive and negative poles are fixed on the cover plate 25, and the core 26 is placed in the outer casing main body 27. The cover plate 25 is welded to the outer casing main body 27 to form a sealed assembly, and the external load is supplied to the external load through the positive and negative poles to store The chemical energy is converted out in the form of electrical energy. There are many lithium-ion batteries used in the market, such as steel shell series, aluminum shell series, and soft packs. These series of batteries are excellent in performance, light and easy to carry, and are favored by people. The reality is that the shortage of energy, the market needs higher energy aggregate battery as soon as possible, the development of lithium-ion battery to high-capacity direction is urgent, and the traditional lithium-ion battery has many problems in the high-capacity and power-type fields. Seriously hindered the development of lithium ions. Only innovative traditions can advance lithium-ion batteries to a wider field. The existing battery case is the smallest in the thickness direction and the height is also limited, which inevitably affects the capacity of a single battery. The traditional technology is to put a single core into a shell to form a single battery; also to increase the capacity of a single battery to connect 2-3 cores together, along the height of the battery casing Into (the core of the core is parallel to the shell wall of the outer casing and perpendicular to the bottom), and a plurality of multi-core single cells in which the cores are connected in parallel are formed. 3 Due to the thickness of the outer casing, the number of cores cannot exceed a large number, which limits the increase in the capacity of the single cells. As mentioned above, the thickness of the shell of the lithium ion battery is small, but the core will expand after absorbing the electrolyte, and the thickness of the core will increase due to the insertion and extraction of lithium ions during charging and discharging. More, it will cause the battery to swell, causing the thickness to increase, the thickness is greater than the original thickness of the outer casing, and the battery will appear as a 'bulk belly, phenomenon. At the same time, multiple cores can also cause difficulties in soldering the ear. At present, there are two tabs in the lithium-ion battery core. The tabs are arranged along the width of the pole piece. The two poles are in the innermost layer of the core and are drawn from the same side of the core. The thermal effect of the battery during charging and discharging is released through the polar year, so the temperature of the core end of the core is higher than the other end. If the battery is discharged at a high rate, the heat generated will be more. The safety concerns, so in order to make this worry 2 to the minimum 'General 鲤 ion battery does not allow large current charge and discharge, it also hinders the power performance of the clock ion battery. Of course, large current discharges can also affect other battery performance. [New content] The purpose of this creation is to provide a lithium-series secondary battery that can increase the capacity and power performance of a single cell in order to provide a low-capacity lithium-ion battery. The purpose of the creation is as follows: the creation includes a casing, a positive and negative electrode, a core, a positive and a negative pole, and an electrolyte. The casing includes a casing body M382594 and a cover plate. The positive and negative columns are fixed on the cover plate, and they are composed. The plurality of single-roll anger cores of the outer casing body are arranged in the up-and-down direction, and the single-core core is on both sides of the right and left sides, and the positive and negative poles and the ear-ear position are disposed on both sides of the corresponding connection of the positive and negative poles. And with the volume of the connection. Connect the positive and negative poles to the positive and negative poles
一較佳具體實施例，該單卷芯包括正極片 月、隔臈，它們以捲繞的方式緊密的結合在一起，形= 怒結構，該正極片的極耳位是位於正極片的—側邊且卜 正極片的長度方向設置，該負極㈣極耳位是位於負ς: 的-侧邊且沿著負極片的長度方向設置，該正極片的 位與負極片的極耳位分別位於卷芯的兩端。In a preferred embodiment, the single-coil core comprises a positive electrode sheet and a separator, which are tightly joined together in a winding manner, and the shape of the positive electrode sheet is located on the side of the positive electrode sheet. The length direction of the positive electrode piece is set, the negative electrode (four) ear position is located on the side of the negative ς: and along the length direction of the negative electrode piece, and the position of the positive electrode piece and the ear piece of the negative electrode piece are respectively located in the roll. Both ends of the core.
種較佳具體實施例，該正負極極耳採用組合極； 該組合極耳包括正極集流體、負極集流體、上絕緣壓被1 下絕緣壓板和彈性體，該正極集流體、負極集流體分刿负 於卷心的左右兩側，上絕緣壓板連接在正極集流體、負趣 集流體的頂部之間，下絕緣壓板連接在正極集流體、負核 集流體的底部之間，該彈性體安裝在上絕緣壓板的上方从 及下絕緣壓板的下方，該卷芯置於上絕緣壓板、下絕緣聲 板之間且在彈性體的作用下被壓緊，所有單卷芯兩端的ι 極極耳位、負極極耳位分別與正極集流體、負極集流趙連 接在—起，該正極集流體、負極集流體的頂端與正負极故 對應電連接。由於採用組合極耳，多個卷芯與金屬集後缝 連接的一體化結構，保證電池的容量原則上無限制地後 5 大。 本創作的技術效果在於：本創作進行大膽革新，發明 了一種全新的鋰系列二次電池。由於採用卷芯與殼體底部 平行的方式，完全不同於傳統卷怒與外殼的殼壁平行、與 底部垂直的方式，可以的放置數量更多的卷芯，大大提高 了單體電池的容量，並且電池吸液和充放電過程中卷芯的 膨脹在内部，不會造成電池的‘鼓肚’現象；從卷芯的兩 端引出極耳位與極耳，能夠好好改善卷芯導流和散熱，保 證熱量的散失，既方便連接也避免電池在充放電過程中因 熱效應産生的危害，使電池更加的安全，性能更加優良。 【實施方式】 參見第17圖和第18圖’本實施例的鐘系列二次電池 包括外设、正負極柱（即正極柱20和負極柱19)、.卷总、 正負極極耳、電解液，外殼由外殼主體23和蓋板24組成， 正負極柱用螺母固定在蓋板24上，卷芯採用多個單卷芯6 組成’多個單卷芯6與外殼主體23的底部和蓋板24平行 放置，且多個單卷芯6依上下方向排列， 參見第1圖至第4圖，實施例中單卷芯6包括正極片、 負極片和兩片隔膜，它們以捲繞的方式緊密的結合在一 起，形成卷芯結構，正極片包括正極集流體和黏接在其表 面上的正極活性物質2 ’在正極片上料極耳位丨，極耳 位1位於正極片的—侧邊且沿著正極片的長度方向設置， 極耳位1的長度等於正極片的長度域有—定的寬度，負 M382594 極片包括負極集流體和黏接在其表面上的負極活性物質 4，在負極片上設有極耳位3 ’極耳位3位於負極片的一侧 邊且沿著負極片的長度方向設置，極耳位3的長度等於負 極片的長度且具有一定的寬度’由於極耳位1、3不需要 隔膜，因此隔膜的寬度小於成品卷芯的寬度，正極片的極 耳位1與負極片的極耳位4分別位於卷芯6的兩端。第4In a preferred embodiment, the positive and negative poles adopt a combination pole; the combined pole includes a positive current collector, a negative current collector, an upper insulating pressure insulating plate and an elastic body, and the positive current collector and the negative current collector are branched. Negative to the left and right sides of the core, the upper insulating plate is connected between the positive current collector and the top of the negative collector, and the lower insulating plate is connected between the positive current collector and the bottom of the negative nuclear current collector. Above the upper insulating platen, below the lower and lower insulating plates, the core is placed between the upper insulating plate and the lower insulating plate and is pressed by the elastic body, and the ι poles of the ends of all the single cores are The negative electrode tabs are respectively connected to the positive electrode current collector and the negative electrode current collector, and the positive electrode current collector and the negative electrode current collector are electrically connected to the positive and negative electrodes. Due to the combination of the tabs and the integrated structure of the multiple cores and the metal back seams, the capacity of the battery is guaranteed to be unlimited in principle. The technical effect of this creation is that this creation made a bold innovation and invented a new lithium series secondary battery. Because the winding core is parallel to the bottom of the casing, it is completely different from the traditional winding anger and the shell wall of the outer casing is parallel to the bottom of the casing, so that a larger number of cores can be placed, which greatly increases the capacity of the single battery. Moreover, during the liquid absorption and charging and discharging process of the battery, the expansion of the core is inside, which does not cause the phenomenon of the drum of the battery; the ear and the ear are extracted from the two ends of the core, which can improve the core conduction and heat dissipation. To ensure the loss of heat, it is convenient to connect and avoid the damage caused by the thermal effect of the battery during charging and discharging, so that the battery is more safe and the performance is better. [Embodiment] Referring to Figures 17 and 18, the clock series secondary battery of the present embodiment includes peripherals, positive and negative columns (i.e., positive electrode column 20 and negative electrode column 19), total volume, positive and negative electrode tabs, and electrolyte solution. The outer casing is composed of a casing main body 23 and a cover plate 24, and the positive and negative columns are fixed on the cover plate 24 by nuts. The winding core is composed of a plurality of single winding cores 6 and a plurality of single winding cores 6 and a bottom portion and a cover plate of the outer casing main body 23. 24 are placed in parallel, and a plurality of single winding cores 6 are arranged in the up and down direction. Referring to Figs. 1 to 4, in the embodiment, the single winding core 6 comprises a positive electrode sheet, a negative electrode sheet and two separators which are tightly wound. Combining together to form a core structure, the positive electrode sheet includes a positive electrode current collector and a positive electrode active material 2' adhered to the surface thereof. The positive electrode sheet is placed on the positive electrode tab, and the tab position 1 is located on the side of the positive electrode sheet. Along the length direction of the positive electrode sheet, the length of the tab position 1 is equal to the length of the positive electrode sheet, and the negative M382594 pole piece includes the anode current collector and the anode active material 4 adhered to the surface thereof. On the piece there is a polar ear 3 'ear ear 3 is in negative One side of the sheet is disposed along the length of the negative electrode sheet, and the length of the tab position 3 is equal to the length of the negative electrode sheet and has a certain width. Since the tabs 1 and 3 do not require a diaphragm, the width of the diaphragm is smaller than the finished roll. The width of the core, the tab 1 of the positive tab and the tab 4 of the negative tab are respectively located at the ends of the core 6. 4th
圖是單卷芯6在剛捲繞完畢時的狀態圖，後續還要被壓成 扁平狀如第3圖所示。The figure is a state diagram of the single winding core 6 immediately after winding, and is subsequently pressed into a flat shape as shown in Fig. 3.
參見第10圖至第18圖，本實施例中的正負極極耳採 用組合極耳，組合極耳包括金屬集流體、上絕緣壓板15、 下絕緣壓板16和彈簧，金屬集流體包括正極集流體、負 極集流體’本實施例中正極集流體採用正極集流板22，負 極集流體採用負極集流板17，負極集流板17與正極集流 板22的結構相同，正極集流板22、負極集流板17在其頂 部和底部設有雜和敍，在上設有連接電池極柱的 f ^極集流板17上的_，在底板上設有凹槽（如 =集>^7上的17Q3)’下絕緣壓板叫接在正 的底…板的底#之間，在下絕緣壓板16 的底面°又有對應的凹掉160l，y*4tLr^ 笙（第對應的上下凹_裝有彈 要的是在卷芯膨脹時產#下的作用更重 極集流板22、負極」板^f 17的頂部之間且位於正 15的頂面Μ'ΐΓ 的顺下方，在上絕緣壓板 又有凹槽1501，在與電池外殼組裝時在凹槽 7 M382594 1501内裝有彈簧，彈簧預壓縮於上絕緣壓板15和電池蓋 板24之間，既產生定位上絕緣壓板15的作用，更重要的 疋在卷芯膨脹時產生緩衝作用’在正極集流板22、負極集 机板17上設有拉釘孔（如負極集流板Π上的1702)，拉 釘孔的數量與單卷芯6的數量相對應配合，在拉釘孔内設 有拉釘21 ’正極集流板22、負極集流板17分別位於卷芯 的左右兩側，卷芯置於上絕緣壓板15、下絕緣壓板16之 間且在彈簧的作用下被壓緊，單卷芯6 兩端的極耳位1、3 折成與單卷芯垂直並與正椏集流板22、負極集流板17緊 貼’同時用拉釘21將單卷芯6的極耳位與正極集流板22、 負極集流板17牢固連接，採用拉釘連接的方式，保證卷 心和集流體之間的連接牢固性和有敢性；電池的正極柱20 .和負極柱19穿過電池蓋板和正、負極集流板的頂板上的 螺孔（如負極集流板Π上的Π01)後，兩端用螺母固定。 本實施例中正極集流板22、電池正極柱2〇採用鋁金 屬，負極集流板17、電池負極柱19採用銅金屬。採用不 同顏色的金屬’在連接單卷芯時不會接反正負極。 參見第5圖至第9圖’本創作還可採用另一種組合極 =該組合極耳包括正極集流柱14、負極集流柱1〇、上 =緣壓板8、下絕緣壓板11、彈簧13和-定數量的金屬 =圈9 ’正極集流柱14、負極集流柱 10各設有兩個，在 匕們的頂部和底部設有外螺紋，上絕緣壓8和下絕緣壓 的結構相同，正極集流柱14、負極集錄10分別位 兩m緣壓板δ連接在正極集流柱14、 8 負極集流柱10的頂部之間’下絕緣壓板11連接在正極集 流杈14、負極集流柱10的底部之間，具體是在上絕緣壓 板8和下絕緣壓板11的兩端都設有兩個集流柱孔（如上 絕緣壓板8的集流柱孔801)分別套在兩個正極集流柱 14、兩個負極集流柱10上’並用螺母12堅固，在螺母 與上絕緣壓板8、下絕緣壓板11之間設有彈簀13，彈菁 13在卷芯膨脹時產生缓衝的作用，避免電池鼓脹，正極集 流柱14、負極集流柱1〇分別位於卷芯的左右兩側，卷芯 置於上絕緣壓板8、下絕緣壓板11之間且在彈簧13的作 用下被壓緊，在每個單卷芯6兩端的正、負極極耳位ι、3 上開有集流柱孔，套在兩側的正極集流挺14、負極集流枉 10上，在正極集流柱14、負極集流柱1〇上還套有一定數 =的金屬壓圈9,金屬壓圈9位於上絕緣壓板8和下絕緣 壓板11之間，金屬壓圈9的數量與單卷芯6的數量相對 應配合，在每個單卷芯6的極耳位的上方和下方各設有一 個金屬壓® 9 ’它㈣單卷芯6的極耳位壓緊使之與正極 集流柱14、負極集流柱10牢固結合。本組合極耳中正極 集流柱14及其上的金屬壓_賴金屬，負極集流柱ι〇 及其上的金屬壓®銅金I本組合極耳與多個單卷怒 組成的卷芯如上該組裝後，再與電池外殼和電池外的正、 負極柱組裝在-起，即構成了本創作驗㈣二次電池， =正極集流柱Η、負極集流柱1Q的頂端、底端通過金 t ^ , 起頂部對應的金屬連接片 與电池外的正或負極柱電連接。 本創作在整個電池卷芯裝配過程中沒有採用超聲波 焊接和内阻焊焊接的方式，而是採取更有效的鉚接和螺母 連接的方式，保證電池的一致性。 爲了改善卷芯的膨脹問題，本創作將金屬彈簧或彈性 鋼片等彈性體引入電池内部，好好地解決電池在注液後以 及化成時的膨脹問題。彈性體除了上述實施例中的彈簧 外，還可以採用彈性金屬片等。 本創作中正極集流體、金屬壓圈採用鋁金屬，負極集 流體、金屬壓圈除了採用銅金屬外，還可採用其它可用的 金屬。正極採用截面較大的鋁板或鋁柱做集流體，負極採 用導電性更好的銅板或銅柱做集流體，保證電池在充放電 過程中能夠承載大的電流。 在本創作的鋰系列二次電池中，因爲金屬集流體的截 面較大，就必須要求整個電池的正負極柱也具有較大的截 面，這樣才能很好地匹配在一起，就保證了電池大電流充 放電特性。 【圖式簡單說明】 第1圖是實施例中單卷芯的正極片的主視結構示意 圖。 第2圖是實施例中單卷芯的負極片的主視結構示意 圖。 第3圖是實施例中單卷芯的主視圖。 第4圖是實施例中單卷芯的立體圖。 M382594 第5圖、第6圖是另一種組合極耳的上絕緣壓板的主 視圖和側視圖。 第7圖、第8圖是另一種組合極耳的金屬壓圈的主視 圖和側視圖。 第9圖是另一種組合極耳的整體結構示意圖。 第10圖、第11圖是實施例中組合極耳的上絕緣壓板 的主視圖和側視圖。 第12圖、第13圖是實施例中組合極耳的下絕緣壓板 的主視圖和側視圖。 第14圖、第15圖是實施例中組合極耳的負極集流板 的主視圖和側視圖。 . 第16圖是實施例中組合極耳的整體結構示意圖。 第17圖是本實施例鋰系列二次電池的裝配結構示意 圖。 第18圖是本實施例鋰系列二次電池的立體裝配示意 圖。 第19圖是傳統鋰離子電池的裝配結構示意圖。 【主要元件符號說明】 1 極耳位 2 正極活性物質 3 極耳位 4 負極活性物質 6 卷怒 M382594 8 上絕緣壓板 9 金屬壓圈 10 負極集流柱 11 下絕緣壓板 12 螺母 13 彈簧 14 正極集流柱 15 上絕緣壓板 16 下絕緣壓板 17 負極集流板 18 螺母 19 負極柱 20 正極柱 21 拉釘 22 正極集流板 23 外殼主體 24 蓋板 25 蓋板 26 卷芯 27 外殼主體 28 正極柱 29 負極柱 801 集流柱孔 1501 凹槽 M382594 1601 凹槽 1701 螺孔 1702 拉釘孔 1703 凹槽Referring to FIGS. 10 to 18, the positive and negative poles in this embodiment employ a combined tab including a metal current collector, an upper insulating platen 15, a lower insulating platen 16, and a spring. The metal current collector includes a positive current collector, In the present embodiment, the positive electrode current collector adopts the positive electrode current collecting plate 22, the negative electrode current collecting member adopts the negative electrode current collecting plate 17, and the negative electrode current collecting plate 17 and the positive electrode current collecting plate 22 have the same structure, and the positive electrode current collecting plate 22 and the negative electrode. The collecting plate 17 is provided with a hybrid and a suffix at its top and bottom, and is provided with a _ on the f ^ pole current collecting plate 17 connected to the battery post, and a groove is provided on the bottom plate (for example, = set > gt; ^ 7 The upper 17Q3)' lower insulation plate is called between the bottom of the positive bottom plate, and the bottom surface of the lower insulation plate 16 has a corresponding concave 160l, y*4tLr^ 笙 (the corresponding upper and lower concave _ It is necessary to play the upper part of the collector plate 22, the negative electrode plate ^f 17 between the top of the positive collector plate 22 and the top surface of the positive 15 Μ 'ΐΓ, in the upper insulation The pressure plate has a recess 1501 which is fitted with a spring in the groove 7 M382594 1501 when assembled with the battery casing. The contraction between the upper insulating platen 15 and the battery cover plate 24 not only creates the function of positioning the upper insulating platen 15, but more importantly, the buffering action occurs when the core is expanded, 'on the positive electrode current collecting plate 22 and the negative electrode collecting plate 17 The utility model is provided with a pull hole (such as 1702 on the negative current collecting plate )), the number of the pulling nail holes is matched with the number of the single winding core 6, and the pulling pin 21 'positive current collecting plate 22 is arranged in the pulling nail hole, The negative current collecting plates 17 are respectively located on the left and right sides of the winding core, and the winding core is placed between the upper insulating pressing plate 15 and the lower insulating pressing plate 16 and is pressed by the spring, and the ear tips of the single winding core 6 are 1. 3 is folded into a vertical direction with the single-roll core and is in close contact with the positive-collecting current collecting plate 22 and the negative-current collecting plate 17 while the shank of the single-coil core 6 is connected to the positive electrode current collecting plate 22 and the negative current collecting plate by the rivet 21 17 firmly connected, using the rivet connection method to ensure the connection between the core and the current collector is robust and courageous; the positive pole 20 of the battery and the negative pole 19 pass through the battery cover and the positive and negative collector plates After the screw holes on the top plate (such as Π01 on the negative current collecting plate )), the two ends are fixed with nuts. The positive electrode set in this embodiment The plate 22 and the battery positive electrode column 2 are made of aluminum metal, the negative electrode current collecting plate 17 and the battery negative electrode column 19 are made of copper metal. The metal of different colors is not connected to the positive and negative poles when connecting the single core. See Fig. 5 to 9 Figure 'This creation can also use another combination pole = the combined pole includes a positive current collector column 14, a negative current collector column 1 〇, an upper = edge pressure plate 8, a lower insulation platen 11, a spring 13 and a predetermined amount of metal = circle 9 'The positive current collecting column 14 and the negative current collecting column 10 are respectively provided with two, and external threads are provided at the top and bottom of the same, and the upper insulating pressure 8 and the lower insulating pressure have the same structure, and the positive current collecting column 14 is the same. The negative electrode assembly 10 is respectively connected between the positive electrode current collecting column 14 and the top of the negative electrode current collecting column 10, and the lower insulating pressure plate 11 is connected to the bottom of the positive electrode current collecting port 14 and the negative electrode current collecting column 10. Specifically, two collector column holes (such as the collector column hole 801 of the insulating platen 8) are disposed on both ends of the upper insulating platen 8 and the lower insulating platen 11 respectively, and are respectively placed on the two positive current collecting columns 14, two On the negative current collecting column 10' and firmly with the nut 12, the nut and the upper insulating platen 8 There is a magazine 13 between the edge pressure plates 11, and the elastic cyanine 13 acts as a buffer when the core is expanded to avoid battery swelling. The positive current collecting column 14 and the negative current collecting column 1 are respectively located on the left and right sides of the winding core. The core is placed between the upper insulating platen 8 and the lower insulating platen 11 and is pressed by the spring 13, and a current collecting column is formed on the positive and negative poles ι, 3 at each end of each single winding core 6. The hole is sleeved on the positive electrode current collector 14 and the negative electrode current collector 10 on both sides, and a certain number of metal pressure rings 9 are also set on the positive electrode current collecting column 14 and the negative electrode current collecting column 1 , and the metal pressure ring 9 is Located between the upper insulating platen 8 and the lower insulating platen 11, the number of the metal pressing rings 9 is matched with the number of the single winding cores 6, and a metal is provided above and below the tab positions of each of the single winding cores 6. The pinch of the press® 9's (four) single-core core 6 is compacted to be firmly bonded to the positive electrode current collecting column 14 and the negative electrode current collecting column 10. The positive electrode current collecting column 14 in the combined ear and the metal pressure _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ After the assembly as described above, it is assembled with the battery case and the positive and negative columns outside the battery, which constitutes the secondary battery of the present invention (4) secondary battery, = positive current collecting column Η, the top end of the negative current collecting column 1Q, and the bottom end. Through the gold t ^ , the corresponding metal connecting piece at the top is electrically connected to the positive or negative pole outside the battery. This creation does not use ultrasonic welding and internal resistance welding in the whole process of battery core assembly, but adopts more effective riveting and nut connection to ensure battery consistency. In order to improve the expansion of the core, the present invention introduces an elastic body such as a metal spring or an elastic steel sheet into the interior of the battery to properly solve the problem of expansion of the battery after liquid injection and formation. The elastic body may be an elastic metal piece or the like in addition to the spring in the above embodiment. In this creation, the positive current collector and the metal pressure ring are made of aluminum metal, and the negative electrode current collector and the metal pressure ring can be made of other metals, in addition to copper metal. The positive electrode adopts a aluminum plate or an aluminum column with a large cross section as a current collector, and the negative electrode uses a copper plate or a copper column with better conductivity as a current collector to ensure that the battery can carry a large current during charging and discharging. In the lithium series secondary battery of the present invention, since the cross section of the metal current collector is large, it is necessary to require the positive and negative columns of the entire battery to have a large cross section, so that the cells can be well matched, and the battery is large. Current charge and discharge characteristics. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic front view showing the structure of a positive electrode sheet of a single core in the embodiment. Fig. 2 is a schematic front view showing the structure of a single-core negative electrode sheet in the embodiment. Fig. 3 is a front view of the single core in the embodiment. Fig. 4 is a perspective view of a single core in the embodiment. M382594 Figures 5 and 6 are a front view and a side view of another upper insulating platen combined with a tab. Fig. 7 and Fig. 8 are a front view and a side view of another metal clasp combining the tabs. Figure 9 is a schematic view of the overall structure of another combined tab. Fig. 10 and Fig. 11 are a front view and a side view of the upper insulating platen of the combined tabs in the embodiment. Fig. 12 and Fig. 13 are a front view and a side view of the lower insulating platen of the combined tabs in the embodiment. Fig. 14 and Fig. 15 are a front view and a side view of the negative electrode current collecting plate in which the tabs are combined in the embodiment. Fig. 16 is a schematic view showing the overall structure of the combined tab in the embodiment. Fig. 17 is a schematic view showing the assembly structure of the lithium series secondary battery of this embodiment. Fig. 18 is a perspective view showing the three-dimensional assembly of the lithium series secondary battery of the present embodiment. Figure 19 is a schematic view showing the assembly structure of a conventional lithium ion battery. [Main component symbol description] 1 pole ear 2 positive active material 3 pole ear 4 negative active material 6 roll anger M382594 8 upper insulation plate 9 metal pressure ring 10 negative current collector column 11 lower insulation plate 12 nut 13 spring 14 positive electrode set Insulating plate 15 Upper insulating plate 16 Lower insulating plate 17 Negative current collecting plate 18 Nut 19 Negative column 20 Positive column 21 Pull pin 22 Positive current collecting plate 23 Housing main body 24 Cover plate 25 Cover plate 26 Core 27 Housing main body 28 Positive electrode column 29 Negative column 801 Collector column hole 1501 Groove M382594 1601 Groove 1701 Screw hole 1702 Pull hole 1703 Groove