201041209 六、發明說明： 【發明所屬之技術領域】 一種鐘電池模組，特別是指一種具有特殊電極結構以及包含—保 護電路之鋰電池。 【先前技術】 為了讓使用者可以長時間的使用行動電子產品，電池的蓄電能力 不斷的精進，且不斷的尋求蓄電能力更大、更穩定的材質來製作高蓄 電量的電池。市面上常見的各型電池所使用的材質包括鉛、碳、鋅、 猛以及水銀等化學材料，但上述習用電池大部份是無法充電再利用 的’除了無法再使用造成浪費以外，使用後的廢棄電池產生嚴重的環 保問題。 發展至今’可充電電池普遍使用於各型電子產品，現今較普遍的 有鎳化合物電池（如鎳-鎘、鎳-氫，以下用「鎳電池」統稱使用鎳的各 型電池）以及鋰化合物電池（如鋰·鐵，以下用「鋰電池」統稱使用鋰 的各型電池），其中鎳電池在實際運用上具有「記憶效應」以及「自耗 電率」之問題’而裡電池的「記憶效應」與「自耗電率」的現象都較 錄電池輕微許多’且以同樣的大小，鋰電池的蓄電量與最大電流都優 於鎳電池。但鋰電池亦有其缺點，由於鋰的化學特性較不穩定，在充 電過度、過熱、外力破壞時恐發生燃燒或爆炸。 在說明鋰電池充電之先前技術之前先行定義鋰電池各結構，其中 該經電池至少包含了儲存電能的電芯（Cell)、包覆該電芯的封閉容器、 連接該電芯而向外延伸至該封閉容器外的正電極與負電極，該電芯之 結構具有多種不同的化學材料，但該電芯之結構與本案之申請技術核 心並不具有直接的關係’故不詳述。為了避免鋰電池產生燃燒或爆炸 之危險，裡電池的充電裝置需具備保護電路來確保鋰電池充電時的電 池電壓不超過一臨界電壓（通常為4.2V)，而為了配合充電裝置的保護 201041209 電路位置，鋰電池的正電極與負電極需設置於同—側而受該保護電路 監測。 習知的鋰電池先前專利如中華民國專利公開第2〇〇9〇388〇號「鐘 二次電池」所示，由一電池殼體包覆了正、負電極貼片而露出部份正、 負電極貼片在外，其揭示之内容中未見任何保護措施，因此充電裝置 以及使用該鋰電池的電子產品（可能是手機或MP3隨身聽或電腦等裝 置）需具備充足的保護電路才能確保使用安全。 事實上，筆記型電腦的電池由於具有較大的空間而都可設置保護 電路，但手機或其他小型電器使用的薄型電池會受限於電池本身體積 的問題而由手機或電器内的保護電路監控電池，但未裝設於手機或電 器内的鋰電池則未受監控與保護，仍曾經發生鋰電池放在手提袋中短 路燃燒之情況。因此又有另一創作如中華民國專利證書第1305965號 「改善穩定性的電池組」，依據其說明書可知其技術核心在於電池（即 先别所疋義之電芯）與殼體之間填充一絕緣材料，除了加強絕緣效果 以外更提高了抵抗外力破壞的能力。值得注意的是該案中更揭示了該 電池與殼體之間設置一保護電路模組之技術。雖然薄型鋰電池單體内 具有保s蒦電路模組可加強安全性，但亦犧牲了體積，或者需耗費更大 的成本去達到小型化的目的。 雖鋰電池的技術已漸趨成熟，但上述之鋰電池皆是為了手機、筆 記型電腦或3C電子產品而量身訂作的，除了鎳電池在市場上已有一般 的電池規格（如AAA型、AA型）的產品以外，鋰電池受限於安全性 而仍無此類實用之產品。 因此，習知的鋰電池以及其充電裝置具有以下的限制： 1. 链電池需使用於具有保護電路的電器上，以避免電池損壞造成燃 燒或爆炸。 2. 鐘電池與電器接觸導通的電極都佈設在同一侧，無法相容於使用 201041209 圓筒型電池的電器。 3. 習知裡電池之養受限’而進_步限雛應用範圍。 4. 習知㈣池要依使用電器_訂規格，設計成本較高。 【發明内容】 综上所述，本案的目的即在於擴展鐘電池的應用範圍並且確保該 裡電池使用的安全性’本案提供-馳電池之結構，透過改變其電極 以求擴展裡電池之應用範圍’且在該鐘電池内設置一保護電路維持其 安全性’達到義於更多電子產品且確保其制安全性的目^ 、 Ο Ο 本案為-織池歡，碰電频_具有—電芯，該電芯且有 -第-電極以及-極性異於該第—電極之第二電極，而驗電池模組 更包括-電性連接該第-電極與第二電極的保護電路、一包覆該電芯 與該保護電路之殼體以及—延伸導電片。該保護電路取得該第―、^ 二電極導通的電力並判斷該第―、第二電極導通的電力是否正常，進 而決定是聽送電力至之—輸出路徑，織體之—第―外緣具有 -外部電極、_第二外部電極，該第―、第二外部電極分別與該保護 電路之輸出路徑電性導通，而其中該第二外部電極連接該延伸導電 片’該延伸導W具有—延伸部以及該延伸部末端之—延伸電極，談 延伸電極m疋於與該第—外緣位於相異平面之―第二外緣。由於該延 伸導電片的-端電性連接該第二外部電極，因此該延伸電極與_ ===冋電位而延伸在該殼體的第二外緣，可視同該殼體的第二 緣八有與該第二外部電極等效的電極。因此該鐘電池模組可 該保護電路同時接觸該第一電極與該第二電極而 電芯異常時仍_供電·。 以避免在 藉由上述之特徵，該鋰電池模組至少具有以下之優點： h具有保護電路監測電芯供電的狀態。 2_具有分離的電極適用於更多種類的電氣用品。 5 201041209 3·便於串聯多個鋰電池模組以改變輸出電壓。 4.不同電力容量的㈣池可具有相同的魏規格，不需為了不 同產品而篁身設計不同型態的電池。 【實施方式】 請參閱圖卜本案為一經電池模組，圖】所示為_電池模租之分 解圖，其中驗電池模組内具有一電芯丨，該電芯丨具有一第—電極^ 以及-極性異於該第n之第二電極12，該第—電極η與第二 電㈣分別連接-電極片⑴、121以電性連接—保護 2。該保護 電路2透過該電極η⑴、⑵電性連接該第_電極u與第二電極η， ，保護電路2藉此監測該電芯〗之狀態與該電芯】提供之—儲蓄電力 是否正常，當該保護電路2發現該電芯丨之電顧常過高或過低又 或者該電S〗提供之電㈣树，縣定停止雜電賴組之電力輸 出’判斷該電心1之㈣正常時職保護電路2取龍第―、第二電 Π導通的儲蓄電力並紐導通至-輸出賴。其巾該輸出路徑 為該保護電路2上鋪賴於輸出電力的兩導電接點，其巾兩導電接點 之極性相異’而兩導電無之其—或兩導電接點可各連接—導電接腳 21作為連接與導電用’在圖i中以兩導電接點之其一連接該導電接腳 為例該電心1與該保護電路2包覆於一殼體内，該殼體是由一個 2的密封件3卜32以及-封閉蓋33結合所構成。該殼體之表面包 3第夕卜緣35以及-第二外緣36 (可見於圖3_2)，且該第一外緣 35與該第二外緣36位於相異之平面。於圖μ中可見該實施態樣中之 第一外緣35為該封閉蓋33之外緣，一第一外部 331以及一第二 外邛電極332則嵌設於該封閉蓋幻中藉此該第一、第二外部電極 33卜332向内延伸與該保護電路2電性導通並向外延伸至該第一外緣 因此田該保護電路2判斷該電芯丨之電力狀態正常時，該第一電 極1卜第二電極12將藉由該電極片m、m、保護電路2以及該保護 201041209 電路2之導電接腳21而電性導通該第一外部電極幻卜第二外部電極 332。該第一外部電極331暴露於該殼體外（如圖2所示），而一延伸 導電片4之一連接部41則固定於該第二外部電極332上，令該延伸導 電片4與該第二外部電極332接觸而電性導通，該延伸導電片4更包 括自該連接部41延伸的一延伸部42以及該延伸部42另一端的一延伸 電極43，該延伸部42末端的延伸電極43則固定於該殼體之第二外緣 36。由於該延伸導電片4與該第二外部電極332電性導通，因此延伸 至第二外緣36的該延伸電極43與該第二外部電極332同極性且可視 〇 同為等電位’因此可等效的視為該電芯1之第二電極12的電力導通至 位於第二外緣36的延伸電極43。藉此，該鋰電池模組的供電或充電可 透過該第-外部電極33 i與延伸電極43形成電流迴路，由於該第一外 部電極331與該延伸電極43位於相異之平面，第一外部雜331與該 延伸電極43可像-般的乾電池―制設置賴紐相異兩端，令該链 電池模組適於更多電氣用品。 請參閱圖2與圖3-1、圖3-2,如圖中所示，複數密閉件31呈弧狀， 使組成的殼體呈圓柱狀，其中該第—外緣35位於該圓柱狀殼體之一 端，而固定該延伸電極43的第二外緣36則位於該圓柱狀殼體之另一 〇 端’其外觀與電極位置與一般的乾電池相彷，因此該鋰電池模組可適 用於大。p伤的電器用品。又於圖之剖面中可見，該殼體中的其中一 . 冑封件31具有一赠311供該延伸導電片4的延伸部42穿過而·剖 溝311延伸至該第二外緣36。由於該延伸導電片4之連接部41與該第 —外4電極332電性導通且露出在該第—外、緣35 (理所當然的與該第 外部電極331具有足夠之絕緣距離），_充電座5 (示於圖4)可在 其充電槽51内之同一侧設置兩供電電極52(於圖4中僅示出其中一供 ，電極52)對該鋰電池模組充電。再者，該殼體外緣具有—防呆結: 部34 ’該充電槽51之侧緣亦設有一防呆結合部％，藉由該鍾電 7 201041209 讀該充電座5之防呆結合部34、μ對應接合，使與紐電池模組校 準與該充電座5結合之接觸位置。 藉此，紐電池模組具有對該電芯丨充放電的電極結構且具有 保護電路2監控馳電池的輸出是否正常，而該第—外部電極331與 氣伸電極43更可使擅電池如同—般圓筒狀電池使用於各種電氣用 品，且便於替換、串並聯制。另，該㈣之外緣可再包親緣之包 覆膜’該包覆膜除了美化該鐘電池模組外觀，更可加強其絕緣安全性。 再者’由於驗電池模組具有獨立的保護電路2以及可串聯使用更 可將多個本案揭示之經電池模組應用於成套之電池模組，例如多個本 案之鐘電池餘在-接電結構中構絲記型電腦使狀電池；或者該 經電池模組可在相同的外型規格下具有不同蓄電量的電芯i，而該電芯 1的第- η與第二電極12可設在相異平面（如上述之實施例）或 相同平面田該帛電極η與第二電極12相同平面時，其結構仍與上 述之實施例相同’該第―電極„與第二電極12健透過電極片⑴、 121與該保護t路2電性連接，並透過上述的結構形成可串、並聯使用 的鐘電池。因此本案揭示之鐘電池模組具有優於f知技術的應用便利 性以及安全性。 雖然本發明已以較佳實施例揭露如上，然其並非用以限定本發 明，任何熟習此技藝者，在不脫離本發明之精神和細内而所作之些 許更動舆·，皆應崎於本發财，因此本發明之 後 附之申請專利範圍所界定者為準。 田職 綜上所述’本發明較習知之結構增進上述功效應已充分符合新 穎性及進步性之妓_專磐件，絲法提，_ 准本件發明專辦請案，以勵創作，至感德便。 ' 201041209 【圖式簡單說明】 圖1為該鋰電池模組之分解圖。 圖2為該鋰電池模組之立體圖。 圖3-1為該裡電池模組之橫向剖面圖。 圖3-2為該鋰電池模組之縱向剖面圖。 圖4為該鋰電池模組與相應之充電座之立體圖。 【主要元件符號說明】201041209 VI. Description of the Invention: [Technical Field of the Invention] A clock battery module, in particular, a lithium battery having a special electrode structure and including a protection circuit. [Prior Art] In order to allow users to use mobile electronic products for a long time, the battery's power storage capacity is continuously improved, and a battery with a higher storage capacity and a more stable material is continuously sought to produce a battery with high storage capacity. The materials used in various types of batteries commonly used in the market include chemical materials such as lead, carbon, zinc, fierce, and mercury. However, most of the above-mentioned conventional batteries cannot be recharged and reused, except for waste that can no longer be used. Waste batteries cause serious environmental problems. Since its inception, rechargeable batteries have been widely used in various types of electronic products. Today, nickel-based compounds (such as nickel-cadmium, nickel-hydrogen, and nickel-based batteries collectively referred to as nickel-based batteries) and lithium-based batteries are commonly used. (For example, lithium and iron, the following "lithium batteries" collectively refer to the use of lithium batteries), in which the nickel battery in the practical use of "memory effect" and "self-consumption rate" problem and the battery's "memory effect The phenomenon of "self-consumption rate" is much lighter than that of the recorded battery. And with the same size, the lithium battery has better storage capacity and maximum current than the nickel battery. However, lithium batteries also have their shortcomings. Because of the unstable chemical properties of lithium, it may cause burning or explosion when charging is excessive, overheating, and external force is destroyed. The structure of the lithium battery is defined prior to the prior art illustrating the charging of the lithium battery, wherein the battery includes at least a cell for storing electrical energy, a closed container covering the cell, and connecting the cell to extend outward to The positive electrode and the negative electrode outside the closed container have a variety of different chemical materials, but the structure of the battery core does not have a direct relationship with the core of the application technology of the present application, so it will not be described in detail. In order to avoid the danger of burning or exploding the lithium battery, the charging device of the battery needs to have a protection circuit to ensure that the battery voltage when the lithium battery is charged does not exceed a threshold voltage (usually 4.2V), and in order to cooperate with the protection of the charging device 201041209 circuit Position, the positive electrode and the negative electrode of the lithium battery need to be disposed on the same side and monitored by the protection circuit. The prior patents of the lithium battery are shown in the "Clock Secondary Battery" of the Republic of China Patent Publication No. 2〇〇9〇388 No., which is covered with a positive and negative electrode patch to expose a part of the positive electrode. The negative electrode patch is out, and there is no protection in the disclosure. Therefore, the charging device and the electronic products using the lithium battery (perhaps a mobile phone or an MP3 player or a computer) must have sufficient protection circuits to ensure the use. Safety. In fact, the battery of the notebook computer can be equipped with a protection circuit because of the large space, but the thin battery used in the mobile phone or other small appliances is limited by the volume of the battery itself and is monitored by the protection circuit inside the mobile phone or the electric appliance. The battery, but the lithium battery not installed in the mobile phone or electrical appliance is not monitored and protected, and the lithium battery is still short-circuited in the tote bag. Therefore, there is another creation such as the Republic of China Patent Certificate No. 1305965 "Battery Pack for Improving Stability". According to the specification, the core of the technology is that the battery (that is, the battery that is not in the right sense) is filled with an insulation between the casing. The material, in addition to strengthening the insulation effect, enhances the ability to resist external damage. It is worth noting that the technique of providing a protection circuit module between the battery and the housing is further disclosed in the case. Although the thin-type lithium battery cell has a s-circuit circuit module for enhanced safety, it also sacrifices the size or costs more to achieve miniaturization. Although the technology of lithium batteries has gradually matured, the above lithium batteries are tailor-made for mobile phones, notebook computers or 3C electronic products, except for nickel batteries, which have general battery specifications (such as AAA type). In addition to the products of AA type, lithium batteries are limited by safety and still have no such practical products. Therefore, the conventional lithium battery and its charging device have the following limitations: 1. The chain battery is required to be used on an electric appliance having a protective circuit to prevent the battery from being damaged or causing combustion or explosion. 2. The electrodes that are in contact with the electrical battery are placed on the same side and are not compatible with the electrical appliances using the 201041209 cylindrical battery. 3. In the conventional knowledge, the battery is limited, and the scope of application is limited. 4. The familiar (4) pool should be based on the use of electrical appliances _ set specifications, the design cost is higher. SUMMARY OF THE INVENTION In summary, the purpose of the present invention is to expand the application range of the clock battery and ensure the safety of the battery used in the present case. The present invention provides a structure of the battery, and the application range of the battery is expanded by changing the electrode. 'And set a protection circuit in the battery to maintain its safety' to achieve more electronic products and ensure the safety of its products ^, Ο Ο This case is - weaving pool, hit the frequency _ with - batteries The battery core has a -first electrode and a second electrode different in polarity from the first electrode, and the battery module further includes a protection circuit electrically connected to the first electrode and the second electrode, and a cladding The battery core and the housing of the protection circuit and the extension conductive sheet. The protection circuit obtains the electric power of the first and second electrodes and determines whether the electric power of the first and second electrodes is normal, and further determines that the power is transmitted to the output path, and the outer edge of the texture has An external electrode, a second external electrode, wherein the first and second external electrodes are respectively electrically connected to an output path of the protection circuit, and wherein the second external electrode is connected to the extended conductive piece And an extension electrode at the end of the extension portion, wherein the extension electrode m is located on a second outer edge that is in a different plane from the first outer edge. Since the end of the extended conductive piece is electrically connected to the second external electrode, the extended electrode extends to the second outer edge of the housing with a _===冋 potential, which may be regarded as the second edge of the housing. There is an electrode equivalent to the second external electrode. Therefore, the battery module can protect the circuit from contacting the first electrode and the second electrode at the same time, and the battery is still powered. In order to avoid the above features, the lithium battery module has at least the following advantages: h has a state in which the protection circuit monitors the power supply of the battery. 2_Separated electrodes are suitable for a wider variety of electrical appliances. 5 201041209 3·Easy to connect multiple lithium battery modules in series to change the output voltage. 4. The (four) pools with different power capacities can have the same Wei specifications, and it is not necessary to design different types of batteries for different products. [Embodiment] Please refer to the drawing. The battery module, as shown in the figure, is an exploded view of the battery module. The battery module has a battery core, and the battery core has a first electrode. And the second electrode 12 having a polarity different from the nth, the first electrode η and the second electric (four) are respectively connected to the electrode sheets (1) and 121 to be electrically connected to the protection 2. The protection circuit 2 is electrically connected to the _electrode u and the second electrode η through the electrodes η(1) and (2), and the protection circuit 2 monitors the state of the wick and the battery provided by the battery. When the protection circuit 2 finds that the battery of the battery is often too high or too low, or the electric (four) tree provided by the electric S, the county stops the power output of the miscellaneous power group, and judges that the electric core 1 (four) is normal. The time protection circuit 2 takes the first and second electric power to save the electricity and conducts it to the output. The output path of the towel is two conductive contacts on the protection circuit 2 which are laid on the output power, and the two conductive contacts of the towel have different polarities, and the two conductive contacts are different - or the two conductive contacts can be connected to each other - conductive The pin 21 is used for connection and conduction. In the figure i, the conductive pin 2 is connected to the protective pin 2 in a housing. A 2 sealing member 3b and a closure cap 33 are combined. The surface of the housing includes a third edge 35 and a second outer edge 36 (see Figure 3-2), and the first outer edge 35 and the second outer edge 36 are in different planes. It can be seen that the first outer edge 35 of the embodiment is the outer edge of the closing cover 33, and a first outer portion 331 and a second outer surface electrode 332 are embedded in the closed cover. The first and second external electrodes 33 332 extend inwardly and electrically extend to the protection circuit 2 and extend outward to the first outer edge. Therefore, when the protection circuit 2 determines that the power state of the battery core is normal, the first The first electrode 12 is electrically connected to the second external electrode 332 by the electrode sheet m, m, the protection circuit 2 and the conductive pin 21 of the protection circuit 201041209. The first outer electrode 331 is exposed to the outside of the housing (as shown in FIG. 2), and a connecting portion 41 of an extended conductive strip 4 is fixed on the second outer electrode 332, so that the extended conductive strip 4 and the first The two external electrodes 332 are electrically connected to each other. The extended conductive strip 4 further includes an extending portion 42 extending from the connecting portion 41 and an extending electrode 43 at the other end of the extending portion 42. The extending electrode 43 at the end of the extending portion 42 It is then fixed to the second outer edge 36 of the housing. Since the extended conductive strip 4 and the second external electrode 332 are electrically connected, the extended electrode 43 extending to the second outer edge 36 is the same polarity as the second external electrode 332 and can be regarded as the same potential. It is considered that the electric power of the second electrode 12 of the battery cell 1 is conducted to the extended electrode 43 located at the second outer edge 36. Thereby, the power supply or charging of the lithium battery module can form a current loop through the first external electrode 33 i and the extension electrode 43 . Since the first external electrode 331 and the extension electrode 43 are located in different planes, the first external portion The hybrid 331 and the extension electrode 43 can be similar to the dry battery of the same type, so that the chain battery module is suitable for more electrical appliances. Referring to FIG. 2 and FIG. 3-1 and FIG. 3-2, as shown in the figure, the plurality of sealing members 31 are arcuate, so that the formed casing has a cylindrical shape, wherein the first outer edge 35 is located in the cylindrical casing. One end of the body, and the second outer edge 36 of the extension electrode 43 is located at the other end of the cylindrical casing. The appearance and electrode position are similar to those of a general dry battery, so the lithium battery module can be applied to a large . p injured electrical appliances. As can be seen in the cross-section of the figure, one of the casings 31 has a gift 311 for the extension 42 of the extended conductive strip 4 to pass through and the slit 311 extends to the second outer edge 36. Since the connecting portion 41 of the extended conductive sheet 4 is electrically connected to the first outer electrode 332 and exposed at the first outer edge 35 (which of course has a sufficient insulating distance from the outer outer electrode 331), the charging stand 5 (shown in FIG. 4) Two power supply electrodes 52 (only one of which is shown in FIG. 4, electrode 52) can be charged on the same side of the charging slot 51 to charge the lithium battery module. Furthermore, the outer edge of the housing has an anti-staying junction: the portion 34 of the charging slot 51 is also provided with a proof-proof joint portion %, and the anti-staying joint portion 34 of the charging stand 5 is read by the clock power 7 201041209 And μ corresponds to the joint, so that the contact battery module is calibrated to the contact position of the charging stand 5. Thereby, the button battery module has an electrode structure for charging and discharging the battery core and has a protection circuit 2 for monitoring whether the output of the battery is normal, and the first outer electrode 331 and the gas extension electrode 43 can make the battery as if - The cylindrical battery is used in various electrical appliances and is easy to replace and serially connected. In addition, the outer edge of the (4) can be further wrapped with a coating of the film. The coating film not only beautifies the appearance of the battery module, but also enhances the insulation safety. Furthermore, since the battery module has an independent protection circuit 2 and can be used in series, a plurality of battery modules disclosed in the present invention can be applied to a battery module of a complete set. In the structure, the wire-shaped computer-shaped battery; or the battery module can have the battery i of different storage capacity under the same external specification, and the first-n and second electrodes 12 of the battery 1 can be set When the germanium electrode η and the second electrode 12 are in the same plane in a different plane (such as the above-described embodiment) or the same plane, the structure is still the same as that of the above embodiment, and the first electrode and the second electrode 12 are transparently transmitted. The electrode sheets (1) and 121 are electrically connected to the protection circuit 2, and form a clock battery that can be used in series or in parallel through the above structure. Therefore, the battery module disclosed in the present invention has better application convenience and safety than the technology. Although the present invention has been described above by way of a preferred embodiment, it is not intended to limit the invention, and any skilled person skilled in the art can make a few changes without departing from the spirit and scope of the invention. Make a fortune Therefore, the scope of the patent application is defined by the scope of the patent application. The above-mentioned structure of the present invention enhances the above-mentioned functions and should fully comply with the novelty and the progressiveness. , _ This invention is a special case for the invention, to encourage creation, to the sense of virtue. '201041209 [Simple diagram of the diagram] Figure 1 is an exploded view of the lithium battery module. Figure 2 is a perspective view of the lithium battery module. Figure 3-1 is a transverse sectional view of the battery module. Figure 3-2 is a longitudinal sectional view of the lithium battery module. Figure 4 is a perspective view of the lithium battery module and the corresponding charging base. Description]
11 111 12 121 2 21 31、3211 111 12 121 2 21 31, 32
311 · 33 · 331 · 332 · 34 . 35 · 36 . 4 · 41 · 42 · 電芯 第一電極 電極片 第二電極 電極片 保護電路 導電接腳 密封件 剖溝 封閉蓋 第一外部電極 第二外部電極 防呆結合部 第一外緣 第二外緣 延伸導電片 連接部 延伸部 延伸電極 43 · 201041209 5 ......充電座 51 ......充電槽 52 ......供電電極 53 ......防呆結合部 10311 · 33 · 331 · 332 · 34 . 35 · 36 . 4 · 41 · 42 · Battery first electrode pad second electrode pad protection circuit conductive pin seal cleavage closure first external electrode second external Electrode foolproof joint first outer edge second outer edge extending conductive sheet connecting portion extending portion extending electrode 43 · 201041209 5 ... charging stand 51 ... charging tank 52 ... Power supply electrode 53 ... foolproof joint 10