1378586 六、發明說明： 【發明所屬之技術領域】 本發明涉及一種電池，尤其涉及一種鋰電池及其製造方 法。 【先前技術】 按，移動手持電子裝置使用的鋰離子電池，因為具有很 高的能量密度，在不恰當的電壓、電流、溫度、壓力下操作， 會有起火或爆炸的風險，所以必須有一套嚴格的保護措施， 才能減少在使用中的危險性。一般應用中，會使用一片具有 保護迴路的保護電路板，來做為電池芯與系統間的保護介 面。常見的保護迴路可以用來防止電池芯被操作在過大電 流、過高電壓、過低電壓、過高溫度、過低溫度等場合。 .請參閱第三圖，一種習知的鋰電池100’包括一電芯10’、 一保護電路板20’及一塑膠體30’。電芯10’上固定焊接有一正 極端子11’及一負極端子12’，該正極端子11’上焊接有一正極 鎳片40’，該負極端子12’上焊接有一負極鎳片50’。保護電路 板20’固定裝設於電芯10’之一側，該保護電路板20’上設有正 極接點、負極接點和輸出端子21’。所述正極鎳片40’與保護 電路板20’之正極接點相連，所述負極鎳片50’與保護電路板 20’之負極接點相連，且正極鎳片40’、負極鎳片50’及保護電 路板20’以嵌件形式包覆於一體低溫注塑成型的塑膠體30’ 内，該塑膠體30’固化時黏附於電芯10’一端，由此達到保護 電路板20’與電芯10’結合固定的效果。 惟，所述保護電路板20’藉由黏附於電芯10’一端的塑膠 體30’包覆點焊連接於電芯10’上的正極鎳片40’及負極鎳片 50’，實現保護電路板20’與電芯10’結合固定，但其承受外力 4 沖擊時易脫落，從而造成保護電路板20’與電芯10’斷開連接。 【發明内容】 本發明的主要目的係針對上述習知技術存在之缺陷提供 一種可確保保護電路板穩固固定於電芯上的鋰電池及其製造 方法。 為實現上述目的，本發明鋰電池包括一電芯、一保護電 路板、一正極鎳片、一負極鎳片、複數固持件及一塑膠體。 電芯具有一金屬殼及設於金屬殼一端的一正極端子及一負極 端子。保護電路板設於電芯之一側，該保護電路板上設有正 極接點、負極接點及輸出端子。正極鎳片焊接於正極端子與 正極接點之間。負極鎳片焊接於負極端子與負極接點之間。 複數固持件固定於電芯上，該等固持件分別具有一基部，基 部固定焊接於電芯的金屬殼上，該基部向保護電路板一側彎 折延伸形成有固接部。塑膠體以一體低溫注塑形式成型於所 述正極鎳片、負極鎳片、固接部及保護電路板上，且黏附於 電芯一側。 本發明所提供鋰電池製造方法，包括以下步驟：首先， 將固持件的基部焊接於電芯的金屬殼上；其次，將正極鎳片及 負極鎳片之一端分別焊接於正極端子及負極端子上；再者，將 正極鎳片之另一端焊接於保護電路板之正極接點上，將負極鎳 片之另一端焊接於保護電路板之負極接點上，並使固持件的固 接部伸向保護電路板一側；最後，將所述正極鎳片、負極鎳片、 固接部及保護電路板以嵌件形式一體低溫注塑成型，形成一塑 膠體，並使塑膠體粘黏附於電芯之一側，即可完成本發明鋰電 池的製造。 如上所述，本發明藉由鋰電池之金屬殼一側固定設置的固 1378586 持件，在低溫注塑成型時塑膠體可包覆固定固持件，從而使嵌 入塑膠體中的保護電路板與電芯固定更穩固。 【實施方式】 為詳細說明本發明之技術内容、構造特徵、所達成的目的 及功效，以下茲例舉實施例並配合圖式詳予說明。 請參閱第一圖和第二圖，本發明鋰電池100包括一電芯 10、一保護電路板20、複數固持件30、一正極鎳片40、一負 極鎳片50及一塑膠體60。 所述電芯10大致呈長方體狀，該電芯10具有一金屬殼 11，金屬殼11之一側表面上固定焊接有一片狀的正極端子12 及一圓柱狀的負極端子13，該正極端子12係由一鎳片裁切製 成。 所述保護電路板20以一體低溫注塑成型於電芯10之一 側，該保護電路板20之上表面一側設有正極接點、負極接點 及輸出端子21。 所述複數固持件30固定焊接於電芯10之金屬殼11上， 該等固持件30分別具有一矩形片狀基部31，基部31固定焊 接於電芯10之金屬殼11上，該基部31之兩側分別向保護電 路板20 —側彎折延伸形成有一固接部32。 所述正極鎳片40大致呈歪倒的“U”型，該正極鎳片40 焊接於正極端子12與正極接點之間。所述負極鎳片50大致呈 歪倒的“U”型，該負極鎳片50焊接於負極端子13與負極接 點之間。 所述塑膠體60以一體低溫注塑形式成型於所述正極鎳片 40、負極鎳片50、固接部32及保護電路板20上，且黏附於 電芯10 —側。 6 .不同尺寸的鋰電池100,其固持件30的長度及厚度亦隨 之變化，但固持件30之長度需避免造成電芯10與保護電路板 20上電極接點相接觸，厚度需滿足焊接需求。 本發明之鋰電池100的製造方法，包括如下步驟：首先， 將固持件30的基部31焊接於電芯10的金屬殼11上；其次， 將正極鎳片40及負極鎳片50之一端分別焊接於正極端子12 及負極端子13上；再者，將正極鎳片40之另一端焊接於保護 電路板20之正極接點上，將負極鎳片50之另一端焊接於保護 電路板20之負極接點上，並使固持件30的固接部32伸向保 護電路板20 —側；最後，將所述正極鎳片40、負極鎳片50、 固接部32及保護電路板20以嵌件形式一體低溫注塑成型，形 成一塑膠體60，並使塑膠體60黏附於電芯之一側，即可完成 本發明鋰電池100的製造。 綜上所述，本發明藉由鋰電池100 —側固定設置的固持件 30，在低溫注塑成型時塑膠體60可包覆固定固持件30，從而 使嵌入塑膠體60中的保護電路板20與電芯10固定更穩固。 【圖式簡單說明】 第一圖係本發明鋰電池之一種實施例的結構設置示意圖。 第二圖係第一圖所示鋰電池之側視圖。 第三圖係一種習知的鋰電池的結構設置示意圖 【主要元件符號說明】 鋰電池 100 電芯 10 金屬殼 11 正極端子 12 負極端子 13 保護電路板 20 輸出端子 21 固持件 30 基部 31 固接部 32 501378586 正極鎳片 40 負極錄片 塑膠體 60 81378586 VI. Description of the Invention: [Technical Field] The present invention relates to a battery, and more particularly to a lithium battery and a method of manufacturing the same. [Prior Art] According to the lithium-ion battery used in mobile handheld electronic devices, because of its high energy density, operating under improper voltage, current, temperature and pressure, there is a risk of fire or explosion, so there must be a set. Strict protection measures can reduce the risk of use. In general applications, a protective circuit board with a protective circuit is used as a protection interface between the battery cell and the system. A common protection circuit can be used to prevent the battery cell from being operated in excessive current, excessive voltage, excessive voltage, excessive temperature, or excessive temperature. Referring to the third figure, a conventional lithium battery 100' includes a battery core 10', a protection circuit board 20' and a plastic body 30'. A positive electrode 11' and a negative electrode terminal 12' are fixedly welded to the battery cell 10'. The positive electrode terminal 11' is soldered with a positive electrode nickel piece 40', and the negative electrode terminal 12' is soldered with a negative electrode nickel piece 50'. The protection circuit board 20' is fixedly mounted on one side of the battery cell 10', and the protection circuit board 20' is provided with a positive electrode contact, a negative electrode contact, and an output terminal 21'. The positive electrode nickel piece 40' is connected to the positive electrode contact of the protection circuit board 20', the negative electrode nickel piece 50' is connected to the negative electrode contact of the protection circuit board 20', and the positive electrode nickel piece 40' and the negative electrode nickel piece 50' And the protection circuit board 20 ′ is covered in the form of an insert into the plastic body 30 ′ of the low temperature injection molding, and the plastic body 30 ′ is adhered to one end of the battery core 10 ′ when curing, thereby achieving protection of the circuit board 20 ′ and the battery core 10' combined with a fixed effect. However, the protection circuit board 20' is covered by a plastic body 30' adhered to one end of the battery cell 10' to be spot-welded to the positive electrode nickel piece 40' and the negative electrode nickel piece 50' on the battery core 10' to realize a protection circuit. The board 20' is fixedly coupled to the battery core 10', but is easily detached when subjected to an external force 4, thereby causing the protection circuit board 20' to be disconnected from the battery core 10'. SUMMARY OF THE INVENTION The main object of the present invention is to provide a lithium battery capable of ensuring that a protective circuit board is firmly fixed to a battery cell and a method of manufacturing the same, in view of the above-described drawbacks of the prior art. To achieve the above object, the lithium battery of the present invention comprises a battery core, a protection circuit board, a positive electrode nickel piece, a negative electrode nickel piece, a plurality of holding members and a plastic body. The battery cell has a metal shell and a positive terminal disposed at one end of the metal shell and a negative terminal. The protection circuit board is disposed on one side of the battery core, and the protection circuit board is provided with a positive pole contact, a negative pole contact and an output terminal. The positive electrode nickel piece is welded between the positive electrode terminal and the positive electrode contact. The negative electrode nickel piece is welded between the negative electrode terminal and the negative electrode contact. The plurality of holding members are fixed to the battery core, and the holding members respectively have a base portion fixedly welded to the metal shell of the battery core, and the base portion is bent and extended toward the side of the protective circuit board to form a fixing portion. The plastic body is molded into the positive electrode nickel piece, the negative electrode nickel piece, the fixing portion and the protective circuit board in an integral low temperature injection molding manner, and adhered to the side of the battery core. The method for manufacturing a lithium battery provided by the present invention comprises the steps of: firstly soldering a base of a holding member to a metal shell of a battery core; secondly, welding one end of the positive electrode nickel piece and the negative electrode nickel piece to the positive electrode terminal and the negative electrode terminal, respectively. Furthermore, the other end of the positive electrode nickel piece is soldered to the positive electrode contact of the protection circuit board, and the other end of the negative electrode nickel piece is soldered to the negative electrode contact of the protection circuit board, and the fixed portion of the holding member is extended. Protecting the side of the circuit board; finally, the positive nickel piece, the negative electrode nickel piece, the fixing part and the protection circuit board are integrally injection molded into a low-temperature injection molding to form a plastic body, and the plastic body is adhered to the battery core. On one side, the manufacture of the lithium battery of the present invention can be completed. As described above, the present invention is provided with a solid 1378586 holding member fixed on the metal shell side of the lithium battery, and the plastic body can cover and fix the holding member during low temperature injection molding, thereby fixing the protective circuit board embedded in the plastic body and the battery core. More stable. [Embodiment] In order to explain the technical contents, structural features, objects and effects of the present invention in detail, the embodiments will be described in detail below with reference to the drawings. Referring to the first and second figures, the lithium battery 100 of the present invention comprises a battery cell 10, a protection circuit board 20, a plurality of holding members 30, a positive electrode nickel plate 40, a negative electrode nickel plate 50 and a plastic body 60. The battery core 10 has a substantially rectangular parallelepiped shape, and the battery core 10 has a metal shell 11 on a side surface of which a sheet-shaped positive electrode terminal 12 and a cylindrical negative electrode terminal 13 are fixedly fixed. The positive electrode terminal 12 It is made from a nickel sheet. The protection circuit board 20 is integrally molded by low temperature injection molding on one side of the battery cell 10. On the upper surface side of the protection circuit board 20, a positive electrode contact, a negative contact, and an output terminal 21 are disposed. The plurality of holding members 30 are fixedly welded to the metal shell 11 of the battery core 10. The holding members 30 respectively have a rectangular sheet-like base portion 31. The base portion 31 is fixedly welded to the metal shell 11 of the battery core 10. A fixing portion 32 is formed on both sides of the protective circuit board 20 to be bent and extended. The positive electrode nickel piece 40 is substantially in the form of a collapsed "U", and the positive electrode nickel piece 40 is welded between the positive electrode terminal 12 and the positive electrode contact. The negative electrode nickel piece 50 is substantially in a "U" shape which is tripped, and the negative electrode nickel piece 50 is welded between the negative electrode terminal 13 and the negative electrode contact. The plastic body 60 is molded on the positive electrode nickel piece 40, the negative electrode nickel piece 50, the fixing portion 32, and the protective circuit board 20 in an integral low temperature injection molding manner, and is adhered to the side of the battery core 10. 6. For the lithium battery 100 of different sizes, the length and thickness of the holding member 30 also change, but the length of the holding member 30 needs to avoid contact between the electrode 10 and the electrode contact on the protection circuit board 20, and the thickness needs to be satisfied. demand. The method for manufacturing the lithium battery 100 of the present invention comprises the steps of: first, soldering the base portion 31 of the holding member 30 to the metal shell 11 of the battery cell 10; secondly, soldering one end of the positive electrode nickel piece 40 and the negative electrode nickel piece 50, respectively. On the positive terminal 12 and the negative terminal 13; further, the other end of the positive electrode nickel piece 40 is soldered to the positive electrode contact of the protection circuit board 20, and the other end of the negative electrode nickel piece 50 is soldered to the negative electrode of the protection circuit board 20. Pointing, and the fixing portion 32 of the holding member 30 is extended to the side of the protection circuit board 20; finally, the positive electrode nickel piece 40, the negative electrode nickel piece 50, the fixing portion 32 and the protection circuit board 20 are in the form of inserts. The low-temperature injection molding is performed to form a plastic body 60, and the plastic body 60 is adhered to one side of the battery cell to complete the manufacture of the lithium battery 100 of the present invention. In summary, the present invention is provided with a holding member 30 fixedly disposed on the side of the lithium battery 100. The plastic body 60 can cover and fix the holding member 30 during low temperature injection molding, so that the protective circuit board 20 embedded in the plastic body 60 can be The cell 10 is fixed more firmly. BRIEF DESCRIPTION OF THE DRAWINGS The first drawing is a schematic view showing the structure of an embodiment of a lithium battery of the present invention. The second figure is a side view of the lithium battery shown in the first figure. The third figure is a schematic diagram of the structure of a conventional lithium battery. [Main component symbol description] Lithium battery 100 Cell 10 Metal case 11 Positive terminal 12 Negative terminal 13 Protection circuit board 20 Output terminal 21 Holding member 30 Base 31 Fastening portion 32 501378586 Positive Nickel Plate 40 Negative Film Recording Plastic Body 60 8