1279573 八、發明說明： 【發明所屬之技術領域】 本發明係有關於一種「可偵測電池額定容量並依電池 額定容量來決定充電電流之電池充電方法」，尤指其以電池 額定容量偵測方法，可製作出一電池額定容量偵測裝置， 配合上可變式電流充電裝置就可完成一種依電池額定容量 來決定充電電流之電池充電方法，使不同額定容量的電池 均可達到最佳之充電效果者。 【先前技術】 隨著科技的發展，電池已成為不可或缺的電力來源， 例如MP3隨身聽、行動電話、筆記型電腦、與電動車輛等 皆使用電池為主要電力來源，為此，多種的充電策略陸續 被k出’如定涓流充電（Constant Trickle1279573 VIII. Description of the Invention: [Technical Field] The present invention relates to a "battery charging method capable of detecting a rated capacity of a battery and determining a charging current according to a rated capacity of the battery", particularly a battery rated capacity detection The method can produce a battery rated capacity detecting device, and the variable current charging device can complete a battery charging method for determining the charging current according to the rated capacity of the battery, so that the batteries with different rated capacities can reach the best. Charging effect. [Prior Art] With the development of technology, batteries have become an indispensable source of electricity. For example, MP3 players, mobile phones, notebook computers, and electric vehicles use batteries as the main source of power. The strategy is followed by a 'catch' charge (Constant Trickle)
CurrentCharge )、定電流充電（Constant Current Charge )、定電流定電壓充電（c〇nstant Current — Constant Voltage Charge)或稱定電壓限電流，兩階段充 電等等。 定>月流充電具電路架構簡單與成本低廉等優點，但其 充電時間超過十小時所以多用作夜間充電（〇vernight _CurrentCharge), Constant Current Charge, constant current constant voltage (C〇nstant Current - Constant Voltage Charge) or rated voltage limit current, two-stage charging, etc. Fixed > monthly flow charging circuit has the advantages of simple circuit structure and low cost, but its charging time is more than ten hours, so it is used for night charging (〇vernight _
Charge)使用，為有效減少定涓流充電方法的充電時間， 疋電/瓜充電系統#木用較須流為大之定電流來對電池充電， 於不易達到其充電系統所須具備的100%滿充， ^ (Overcharge) ^ n ere arge j見象發生，為了克服此問題，定電流定售 1279573 壓充電方法一開始用定電流對電池充電，充電一直到達設 定的充電終止電壓（Final Voltage )，到此設定電壓後， 接著充電器以等值於設定電壓值的定電壓對電池充電，且 充電電流自動地減少，當充電電流減少至0. 01C時，視為 電池100%滿充，在考慮充電速度、安全性及成本下，定電 流定電壓充電法為目前市面上最常使用之電池充電方法。 然工程師在設計一定電流定電壓充電器時，僅能針對 某一固定額定容量的電池進行參數設定，也就是說，一充 電器僅能在使用此一額定容量的電池時，才可達到最佳的 充電效果，雖然不同的額定容量的電池也可使用，但其效 果會變差，甚至會有危險，這對使用不同額定容量之電池 的消費者常會造成不便，舉例而言，現在一支手機常會有 兩顆以上的電池，而這兩顆以上的電池之額定容量常會不 同，若手機充電器設計給一額定容量900mAh的原廠鋰離子 電池使用，按照電池製造商之建議，其最適合之定電流充 電值為0. 7C，也就是900x0. 7=630mA，而定電壓充電值為 4. 2V，假如有一使用者為延長手機的待機時間及通話時間 而又購買一額定容量為1350mAh的高容量鋰離子電池，很 明顯，其最適合定電流充電值應為1350x0. 7=945mA，然而 充電器僅用630mA對其充電，所以充電時間明顯增長，又 假如使用者為省錢買一額定容量為600mAh小容量的鋰離子 電池，其最適合定電流充電值應為600x0. 7=420mA，然而充 電器卻用630mA對其充電，此充電電流明顯大於最適合定 電流充電值，雖然電池的充電速度會增快，卻也因此減少 電池的使用壽命（Life-Cycle)，更甚者，若電池額定容量 差距太大，導致超過最大安全充電電流，則會有危險發生。 1279573 為解決上述之問題，我國發明專利316337在電池組外 加一電阻，此電阻的大小是依據電池的額定容量來給定 的，所以充電器僅需加裝一電阻量測裝置，就可依據此給 定的電阻值，來得知電池的額定容量，然而，此方法並無 電池額定容量的量測機制，需要事先知道該電池的額定容 量，才能給定其電阻值者。 本發明人有鑑於此，即本著創作之精神，乃思及製程 及裝設之方法創作而不斷地試驗製程方法及製品，經由多 次試驗及多年經驗，而有改進現今缺失之本創作，進而推 出樣品及申請本發明者。 【發明内容】 本發明之主要目的，乃在提供一種可偵測電池額定容 量並依電池額定容量來決定充電電流之電池充電方法，尤 指其係為一種電池偵測與充電技術，一種電池額定容量偵 測裝置與方法，以及一種可依電池額定容量輸出不同充電 電流，使不同額定容量的電池均可達到最佳之充電效果者。 本發明之次要目的，乃在提供一種可偵測電池額定容 量並依電池額定容量來決定充電電流之電池充電方法，可 製作出一電池額定容量偵測裝置，配合上可變式電流充電 裝置就可完成一種依電池額定容量來決定充電電流之電池 充電方法者。 1279573 【實施方式】 餘下兹配合圖式，詳細說明本創作之最佳實施例如后： 如第一圖所示係為本發明所揭示之電池充電系統，其 包含一可變式電流充電裝置（1〇)、電池額定容量偵測裝置 (20)及電池（30) ’該可變式電流充電裝置（1〇)係接於電池 (30)之輸入端’電池額定容量偵測裝置（2〇)之輸出端，用 以產生不同的電流來對電池（30)充電，該電池額定容量偵 測裝置（20)係接於可變式電流充電裝置之輸入端，電 池（30)之兩端’用以量測電池（3〇)的額定容量，第一圖之 一為對應第一圖’係為本發明偵測電池額定容量並依額定 谷置決定充電電流之電池充電方法之流程圖，簡述如下； 首先’系統由電池額定容量偵測裝置（2〇)先偵測出電池（3〇) 的額定容量，並將此額定容量值傳送給可變式電流充電裝 置（10) ’接著，依据電池容量輸出不同電流對電池充電， 令可變式電流充電裝置（10)會依電池（30)的額定容量送出 合適的電流來對電池（3〇)充電，最後於充電完成跳離並結 束充電。 如第一圖所示係為本發明所揭露第一種電池額定容量 偵測方法之示意圖，其包含一定電流源I cc(2〇1)、一切換 開關（202)、一電壓表（2〇3)、一計時器（2〇4)和一電池 (30)該疋電机源I cc(2〇1)係接於切換開關（2〇2)之輸入 端，用以產生一定電流，該切換開關（2〇2)係接於定電流源 Icc(201)之輪出端，電池（3〇)的輸入端，用以控制定電流 源I cc(201)是否對電池（3〇)充電，該電壓表（2〇3)係接於 電池（30)兩端，用以量測電池（3〇)電壓，其計時器（2〇4)係 1279573 二於2::定時間τ，以控制切換開關(202)的關閉時 :β θ為對應第二圖，係為本發明所揭露第一種電池 額疋谷里彳貞挪方法之流程圖，簡述如下：—開始 先量測電池⑽兩端電壓，記為V1，接衫電流=) cc(201)對電池（3〇)充電’計時器⑽4)開始計時一固定時 間τ，經過此固定充電時間τ後’電壓表（2〇3)再量測電池 (30)兩端電壓，記為V2，最後’以此駭時間7内定電流 源I cc(201)對電池（3〇)充電下，電池（別）的電壓增量△ v =V1 — V2來估算電池（3〇)的額定容量。 如第二圖所示係為本發明所揭露第二種電池額定容量 偵測方法之示意圖，其包含一定電流源j cc(2〇1)、一切換 開關（202)、一電壓表（203)、一計時器（204)和一電池 (30)，該定電流源I cc(201)係接於切換開關（2〇2)之輸入 端，用以產生一定電流，該切換開關（202)係接於前述定電 流源I cc(201)之輸出端，電池（30)的輸入端，用以控制電 池（30)充電與否，該電壓表（203)係接於電池（30)兩端，用 以量測電池（30)電壓，該計時器（204)係用於計時電池（30) 充電時間，第五圖為對應第三圖，係為本發明所揭露第二 種電池額定容量偵測方法之流程圖，簡述如下：一開始電 壓表（203)先量測電池（30)兩端電壓，記為V3，並將計時 器（204)歸零重新計數，接著，定電流源I cc(20對電池（30) 進行定電流充電，電壓表（203)並再次量測電池（30)兩端電 壓，記為V4,若V4 — V3電壓差小於一預先設定電壓差V set，則定電流源I cc(201)繼續對電池（30)進行定電流充 電，直到V4— V 3電壓差等於該預先設定電壓差V set，當 V4 — V3電壓差等於系統所設定之電壓差Vset時，則讀 1279573 取計時器（204)的時間，記為a τ，並以△ T的大小來估算 電池（30)的額定容量。 如第六圖所示係為本發明具體實施例之方塊圖，其係 以運用在手機之鋰離子電池，其包含一微處理機（4〇)、一 可控式電源裝置（50)、一電壓量測與轉換裝置（6〇)和一電 池（30)，微處理機（40)係連接於可控式電源裝置（5〇)之輸 入端，電壓量測與轉換裝置（60)之輸出端，除内含一計時 器（401)外，亦建有電池額定容量偵測方法之等效程式及整 系統動作控制程序之程式，用以完成電池（3〇)額定容量偵 測及充電工作，可控式電源裝置（50)，係連接於電池（3〇) 之輸入端，微處理機（40)之輸出端，用以接收微處理機（4〇) 所送來之命令，產生不同之電流對電池（3〇)充電，電壓量 測與轉換裝置（60)，係連接於電池（3〇)之兩端，微處理機 (40)之輸入端，用來量測電池（3〇)兩端電壓，並將此電壓 轉換為微處理機（40)所能接收之形式，以利將電池（3〇)電 壓值傳送給微處理機（40)。若本實施例採用本發明所揭示 之第一種電池額定容量偵測方法，則其工作流程描述如 下·首先微處理機(40)送出一定電流300mA的命令給可控 式電源裝置（50) ’用以產生定電流300mA來對電池（go)充 電，電壓量測與轉換裝置（60)量測電池（3〇)兩端電壓，記 為VI，並傳送給微處理機（40)，此時微處理機（4〇)内的計 時器（401)並開始計時一固定時間丄分鐘，時間到後，電壓 量測與轉換裝置（60)會再量測電池（30)兩端電壓，記為v 2，並將其傳送給微處理機（4〇)，微處理機（4〇) 據此 固定時間1分鐘固定電流300mA充電下之電壓增加量Δ ν = V2-V1來估算電池⑽的額定容量’如第七_9所示係為本 1279573 發明對不同額定容量的電池在定電流300mA下充電1分鐘 的電壓增加量，如第七圖可看出其關係可由下式估算出電 池的額定容量Q bCharge), in order to effectively reduce the charging time of the fixed trickle charging method, the electricity/melon charging system #wood use is required to charge a large current to charge the battery, which is difficult to reach 100% of the charging system. Full charge, ^ (Overcharge) ^ n ere arge j See the occurrence of the image, in order to overcome this problem, the constant current is scheduled to sell 1279573. The charging method starts with charging the battery with a constant current, and the charging reaches the set charge termination voltage (Final Voltage). After the voltage is set, the charger then charges the battery with a constant voltage equal to the set voltage value, and the charging current is automatically reduced. When the charging current is reduced to 0.01C, the battery is considered to be 100% fully charged. Considering the charging speed, safety and cost, the constant current constant voltage charging method is the most commonly used battery charging method on the market. However, when designing a certain current constant voltage charger, engineers can only set parameters for a battery with a fixed rated capacity. That is to say, a charger can only achieve the best when using this rated capacity battery. The charging effect, although batteries with different rated capacities can be used, but the effect will be worse or even dangerous. This is often inconvenient for consumers who use batteries with different rated capacities. For example, now a mobile phone There are often more than two batteries, and the rated capacity of these two or more batteries is often different. If the mobile phone charger is designed for a lithium-ion battery with a rated capacity of 900mAh, it is most suitable according to the battery manufacturer's recommendations. The constant current charging value is 0. 7C, that is, 900x0. 7=630mA, and the constant voltage charging value is 4.2V, if a user purchases a rated capacity of 1350mAh for extending the standby time and talk time of the mobile phone. Capacity lithium-ion battery, it is obvious that its most suitable current charging value should be 1350x0. 7=945mA, but the charger only charges it with 630mA, so Charging time is obviously increased, and if the user wants to save money to buy a lithium-ion battery with a small capacity of 600mAh, the most suitable current charging value should be 600x0. 7=420mA, but the charger is charged with 630mA. This charging current is significantly larger than the most suitable current charging value. Although the charging speed of the battery will increase, it will reduce the battery life (Life-Cycle). What's more, if the battery capacity difference is too large, it will exceed the maximum. A safe charging current can be dangerous. 1279573 In order to solve the above problems, China's invention patent 316337 adds a resistor to the battery pack. The size of the resistor is given according to the rated capacity of the battery. Therefore, the charger only needs to be equipped with a resistance measuring device. The rated resistance is used to know the rated capacity of the battery. However, this method does not have a measurement mechanism for the rated capacity of the battery. It is necessary to know the rated capacity of the battery in advance to give the resistance value. The present inventors have continually tested the process methods and products in the spirit of creation, in the spirit of creation, and in the creation of methods and installation methods. Through numerous experiments and years of experience, the present invention has been improved. Further, samples were introduced and the inventors of the present invention were applied. SUMMARY OF THE INVENTION The main object of the present invention is to provide a battery charging method capable of detecting a rated capacity of a battery and determining a charging current according to a rated capacity of the battery, and more particularly, a battery detecting and charging technology, and a battery rating The capacity detecting device and method, and a charging current that can be output according to the rated capacity of the battery, so that the batteries with different rated capacities can achieve the best charging effect. A secondary object of the present invention is to provide a battery charging method capable of detecting a rated capacity of a battery and determining a charging current according to a rated capacity of the battery, and a battery rated capacity detecting device can be fabricated, coupled with a variable current charging device. A battery charging method that determines the charging current according to the rated capacity of the battery can be completed. 1279573 [Embodiment] The following is a detailed description of the best implementation of the present invention, as follows: The first figure is a battery charging system disclosed in the present invention, which comprises a variable current charging device (1) 〇), battery rated capacity detecting device (20) and battery (30) 'The variable current charging device (1〇) is connected to the input end of the battery (30) 'battery rated capacity detecting device (2〇) The output end is used to generate different currents for charging the battery (30). The battery rated capacity detecting device (20) is connected to the input end of the variable current charging device, and the two ends of the battery (30) are used. To measure the rated capacity of the battery (3〇), one of the first figures corresponds to the first figure, which is a flow chart of the battery charging method for detecting the rated capacity of the battery and determining the charging current according to the rated valley. As follows: First, the system first detects the rated capacity of the battery (3〇) by the battery rated capacity detecting device (2〇), and transmits the rated capacity value to the variable current charging device (10). Battery capacity output different current vs. electricity The battery is charged, so that the variable current charging device (10) will charge the battery (3〇) according to the rated capacity of the battery (30), and finally jump and end the charging after the charging is completed. As shown in the first figure, the first battery rated capacity detecting method disclosed in the present invention includes a certain current source I cc (2〇1), a switch (202), and a voltmeter (2〇). 3), a timer (2〇4) and a battery (30), the motor source I cc (2〇1) is connected to the input end of the switch (2〇2) for generating a certain current, The switch (2〇2) is connected to the output terminal of the constant current source Icc(201), and the input end of the battery (3〇) is used to control whether the constant current source I cc (201) charges the battery (3〇). The voltmeter (2〇3) is connected to both ends of the battery (30) for measuring the voltage of the battery (3〇), and the timer (2〇4) is 1279573 2 at 2:: fixed time τ, When the control switch (202) is turned off: β θ corresponds to the second figure, which is a flow chart of the first method for removing the battery amount in the valley of the present invention, which is briefly described as follows: (10) Voltage at both ends, recorded as V1, current in the shirt =) cc (201) Charges the battery (3 〇) 'Timer (10) 4) Starts a fixed time τ, after this fixed charging time τ 'Voltmeter (2〇 3) Re-quantity Measure the voltage across the battery (30), record it as V2, and finally 'charge the battery (3 〇) with the current source I cc (201) at this time, the voltage increment of the battery (other) △ v = V1 — V2 to estimate the rated capacity of the battery (3 〇). FIG. 2 is a schematic diagram of a second battery rated capacity detecting method according to the present invention, which includes a certain current source j cc (2〇1), a switch (202), and a voltmeter (203). a timer (204) and a battery (30), the constant current source I cc (201) is connected to the input end of the switch (2〇2) for generating a certain current, and the switch (202) is Connected to the output end of the constant current source I cc (201), the input end of the battery (30) is used to control whether the battery (30) is charged or not, and the voltmeter (203) is connected to the two ends of the battery (30). For measuring the voltage of the battery (30), the timer (204) is used for timing the charging time of the battery (30), and the fifth figure is corresponding to the third figure, which is the second battery rated capacity detection disclosed in the present invention. The flow chart of the method is briefly described as follows: First, the voltmeter (203) first measures the voltage across the battery (30), denotes V3, and resets the timer (204) to zero, and then, the current source I cc (20 pairs of batteries (30) for constant current charging, voltmeter (203) and again measure the voltage across the battery (30), recorded as V4, if V4 - V3 voltage If the difference is less than a predetermined voltage difference Vset, the constant current source Icc(201) continues to charge the battery (30) until the voltage difference of V4 - V3 is equal to the preset voltage difference Vset, when V4 - V3 voltage When the difference is equal to the voltage difference Vset set by the system, read 12759573 and take the time of the timer (204), denoted as a τ, and estimate the rated capacity of the battery (30) by the magnitude of Δ T. As shown in the sixth figure Is a block diagram of a specific embodiment of the present invention, which is a lithium ion battery used in a mobile phone, comprising a microprocessor (4 〇), a controllable power supply device (50), a voltage measuring and converting device (6〇) and a battery (30), the microprocessor (40) is connected to the input end of the controllable power supply device (5〇), and the output of the voltage measuring and converting device (60), except for one In addition to the timer (401), the equivalent program of the battery rated capacity detection method and the program of the whole system motion control program are also built to complete the battery (3〇) rated capacity detection and charging work, and the controllable power supply device (50), connected to the input of the battery (3〇), the microprocessor 40) The output terminal is used to receive the command sent by the microprocessor (4〇), generate different currents to charge the battery (3〇), and the voltage measuring and converting device (60) is connected to the battery (3) At both ends of the microprocessor, the input of the microprocessor (40) is used to measure the voltage across the battery (3〇) and convert this voltage into a form that the microprocessor (40) can receive, in order to facilitate The battery (3 〇) voltage value is transmitted to the microprocessor (40). If the first battery rated capacity detecting method disclosed in the present invention is used in the embodiment, the workflow is as follows: First, the microprocessor (40) Send a command of 300mA to the controllable power supply unit (50) to generate a constant current of 300mA to charge the battery (go), and the voltage measurement and conversion device (60) to measure the voltage across the battery (3〇). Recorded as VI, and transmitted to the microprocessor (40), at this time the timer (401) in the microprocessor (4〇) starts to count for a fixed time 丄 minute, after the time, the voltage measurement and conversion device ( 60) The voltage across the battery (30) will be measured again, denoted as v 2, and transmitted to the microprocessor (4〇 ), microprocessor (4〇) According to this fixed time 1 minute fixed current 300mA charging voltage increase Δ ν = V2-V1 to estimate the rated capacity of the battery (10) 'as shown in the seventh _9 is 1279573 invention For a battery of different rated capacity, the voltage increase is charged for 1 minute at a constant current of 300 mA. As shown in the seventh figure, the relationship can be estimated by the following formula:
Qb=1367-3333xA V mAh 在得出電池額定容量Qb後，微處理機（40)就可依電池 製造商所建議之0.7C得出最佳充電電流，並令可控式電源 裝置（50)產生此充電電流對電池（30)充電。 若本實施例採用本發明所揭示之第二種電池額定容量 偵測方法，則工作流程如下，首先微處理機（40)下命令給 可控式電源裝置（50)令其產生一定電流300mA來對電池（3〇) 充電，同時電壓量測與轉換裝置（60)量測電池（30)兩端電 壓，並將此電池（30)電壓送至微處理機（40)，微處理機（40) 會記錄此第一筆電池（30)電壓值，並將計時器（401)歸零重 新計時，可控式電源裝置（50)持續產生一定電流300mA對 電池（30)充電，同時，電壓量測與轉換裝置（60)也持續量 測電池（30)的兩端電壓，直到電池（30)的電壓增加量到達 一設定值0· IV，此時，微處理機（40)會讀取計時器（401) 的值，以獲得該電池（30)在300mA固定電流充電下，電壓 上升0· IV所需之時間△ T，最後，微處理機（40)依時間△ T估算出電池（30)的額定容量，並據此決定充電電流值的 大小，並送至可控式電源裝置（50)產生一合適之電流對電 池（30)充電，如第八圖所示係為本發明對不同額定容量的 電池在300mA定電流下充電，使電池增加0· IV所需時間， 由第八圖可以明顯看出，電池（30)的,額定容量和時間ΔΤ 成正比關係，並由下式估算得知Qb=1367-3333xA V mAh After the rated battery capacity Qb is obtained, the microprocessor (40) can obtain the optimal charging current according to the battery manufacturer's recommended 0.7C, and make the controllable power supply device (50) This charging current is generated to charge the battery (30). If the present embodiment adopts the second battery rated capacity detecting method disclosed by the present invention, the workflow is as follows. First, the microprocessor (40) commands the controllable power supply device (50) to generate a current of 300 mA. The battery (3〇) is charged, and the voltage measuring and converting device (60) measures the voltage across the battery (30), and sends the battery (30) voltage to the microprocessor (40), the microprocessor (40) The first battery (30) voltage value will be recorded, and the timer (401) will be reset to zero. The controllable power supply unit (50) continuously generates a certain current of 300 mA to charge the battery (30), and at the same time, the amount of voltage The measuring and converting device (60) also continuously measures the voltage across the battery (30) until the voltage increase of the battery (30) reaches a set value of 0·IV, at which time the microprocessor (40) reads the timing. The value of the device (401) is obtained by the battery (30) under a fixed current of 300 mA, and the time required for the voltage to rise by 0·IV is ΔT. Finally, the microprocessor (40) estimates the battery according to the time ΔT (30). The rated capacity, and accordingly determine the size of the charging current, and send it to controllable The power supply device (50) generates a suitable current to charge the battery (30), as shown in the eighth figure, which is the time required for the battery of different rated capacity to be charged at a constant current of 300 mA to increase the battery by 0·IV. It can be clearly seen from the eighth figure that the rated capacity of the battery (30) is proportional to the time ΔΤ and is estimated by the following formula.
Qb~16. 7χΔ Τ + 317 mAh 11 1279573 在得出電池額定容量Qb後，微處理機（40)就可依電池 製造商所建議之0. 7C得出最佳充電電流，並令可控式電源 裝置（50)產生此充電電流對電池（30)充電。 如第九圖所示係為本發明對額定容量800mAh鋰離子電 池進行充電實驗之結果，我們和一用於額定容量600mAh鋰 離子的習知定電壓定電流充電器進行比較實驗，對額定容 量60OmAh裡離子電池的充電實驗的結果與本發明所提之充 電方法與習知定電壓定電流充電法幾乎具有相同充電效 果，而對額定容量800mAh鋰離子電池進行之充電實驗就有 明顯之不同，實驗結果如第九圖所示，圖中實線為本發明 所提之充電方法，虛線為習知定電壓定電流充電方法，其 可清楚看出，本發明所提之充電方法確實可偵測出電池（30) 的額定容量，進而決定出較適合之充電電流來對電池充 電，以獲得較定電流定電壓充電方法更短的充電時間者。 綜上所述，當知本發明具有產業上利用性與進步性， 且本發明未見於任何刊物，亦具新穎性，當符合專利法第 十九條及廿條之規定，爰依法提出發明專利申請，懇請貴 審察委員惠准專利為禱。 唯以上所述者，僅為本發明之其中較佳實施例而已， 當不能以之限定本發明實施之範圍，即大凡依本創作申請 專利範圍所作之均等變化與修飾，皆應仍屬本創作專利涵 蓋之範圍内。 12 1279573 【圖式簡單說明】 第一圖：係為本發明所揭示之電池充電系統。 第一圖之一：係為本發明偵測電池額定容量並依額定容 量決定充電電流之電池充電方法之流程 圖。 第二圖：係為本發明所揭露第一種電池額定容量偵測 方法之示意圖。 第三圖：係為本發明所揭露第二種電池額定容量偵測 方法之不意圖。 第四圖：係為本發明所揭露第一種電池額定容量偵測 方法之流程圖。 第五圖：係為本發明所揭露第二種電池額定容量偵測 方法之流程圖。 第六圖：係為本發明具體實施例之方塊圖。 第七圖：係為本發明對不同額定容量的電池在定電流 300mA下充電1分鐘的電壓增加量。 第八圖：係為本發明對不同額定容量的電池在300mA 定電流下充電，使電池增加0. IV所需時間。 第九圖：係為本發明對額定容量800mAh鋰離子電池進 行充電實驗之結果。 13 1279573 【主要元件符號說明】 ίο......可變式電流充電裝置 20......電池額定容量偵測裝置 201 .....定電流源I cc 202 .....切換開關 203 .....電壓表 204 .....計時器 30......電池 40......微處理機 401.....計時器 50......可控式電源裝置 60......電壓量測與轉換裝置Qb~16. 7χΔ Τ + 317 mAh 11 1279573 After the rated capacity Qb of the battery is obtained, the microprocessor (40) can obtain the optimal charging current according to the battery manufacturer's recommended 0. 7C, and make the controllable The power supply unit (50) generates this charging current to charge the battery (30). As shown in the ninth figure, the results of the charging experiment of the rated capacity 800mAh lithium ion battery of the present invention are compared with a conventional constant voltage constant current charger for a rated capacity of 600 mAh lithium ion, and the rated capacity is 60OmAh. The result of the charging experiment of the ionic battery has almost the same charging effect as the charging method of the present invention and the conventional constant voltage constant current charging method, and the charging experiment of the rated capacity 800 mAh lithium ion battery is obviously different. As shown in the ninth figure, the solid line in the figure is the charging method proposed by the present invention, and the broken line is a conventional constant voltage constant current charging method, which clearly shows that the charging method proposed by the present invention can be detected. The rated capacity of the battery (30), in turn, determines the appropriate charging current to charge the battery to obtain a shorter charging time than the constant current constant voltage charging method. In summary, when the invention is industrially usable and progressive, and the invention is not found in any publication, it is also novel. When complying with the provisions of Article 19 and the provisions of the Patent Law, the invention patent is filed according to law. To apply, please ask your reviewer to pay for the patent as a prayer. The above is only the preferred embodiment of the present invention, and the scope of the present invention cannot be limited thereto, that is, the equal variation and modification of the patent application scope of the present invention should still belong to the present creation. Within the scope of the patent. 12 1279573 [Simple description of the drawings] The first figure is a battery charging system disclosed in the present invention. One of the first figures is a flow chart of the battery charging method for detecting the rated capacity of the battery and determining the charging current according to the rated capacity. The second figure is a schematic diagram of the first battery rated capacity detecting method disclosed in the present invention. The third figure is not intended to be the second battery rated capacity detecting method disclosed in the present invention. The fourth figure is a flow chart of the first battery rated capacity detecting method disclosed in the present invention. The fifth figure is a flow chart of the second battery rated capacity detecting method disclosed in the present invention. Figure 6 is a block diagram of a specific embodiment of the present invention. Figure 7 is a voltage increase of the present invention for charging a battery of different rated capacity at a constant current of 300 mA for 1 minute. The eighth figure is the time required for the battery of the battery of different rated capacity to be charged at a constant current of 300 mA to increase the battery by 0.4. Fig. 9 is a result of the charging experiment of a lithium ion battery with a rated capacity of 800 mAh. 13 1279573 [Description of main component symbols] ίο...... Variable current charging device 20... Battery rated capacity detecting device 201 ..... Constant current source I cc 202 ..... Switch 203 ..... voltmeter 204 ..... timer 30 ... battery 40 ... microprocessor 401 ..... timer 50.... .. controllable power supply device 60...voltage measurement and conversion device