201105001 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明涉及一種可充電的電子裝置，特別涉及一種可指 示電池充電狀態的電子裝置。 【先前技術】 [0002] 目前各種電子裝置越來越多，為了電子裝置的便攜，電 子裝置一般都採用了電池供電。而電池一般都是可反復 充電的二次電池，這樣需要經常對電子裝置的電池進行 充電。 [0003] 而對電池充電時，不論電子裝置處於關機或開機狀態下 ，都應該對電池充電狀態進行指示，比如指示電池處於 正在充電中、充電已經完畢等，從而給用户必要的提示 。目前的充電器指示電路雖然都能通過LED等指示充電狀 態，但都需要通過特定的1C完成，控制過程比較複雜， 成本較高。 [0004] 因此，有必要提供一種具有簡易結構的電子裝置，在電 子裝置開機或關機充電時，對充電狀態進行指示。。 【發明内容】 [0005] 有鑒於此，提供一種簡易的可實現充電狀態提示的電子 裝置，以解決現有技術中實現成本較高的問題。 [0006] 一種可指示電池充電狀態的電子裝置，包括一電源介面 、一選擇電路、一第一控制開關、一硬體控制指示單元 、一LED模組、一第二控制開關、一軟體控制指示單元、 一處理單元、一硬體控制啟動單元、一充電控制晶片以 098124638 表單編號A0101 第4頁/共20頁 0982042066-0 201105001 [0007] 0 [0008] [0009]201105001 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to a rechargeable electronic device, and more particularly to an electronic device that can indicate a state of charge of a battery. [Prior Art] [0002] At present, there are more and more various electronic devices, and for the portableness of electronic devices, electronic devices are generally powered by batteries. The battery is generally a rechargeable secondary battery, which requires frequent charging of the battery of the electronic device. [0003] When charging the battery, the battery charging status should be indicated regardless of whether the electronic device is turned off or turned on, such as indicating that the battery is being charged, charging is completed, etc., thereby giving the user the necessary prompt. Although the current charger indicating circuit can indicate the charging status through LEDs, etc., all of them need to be completed by a specific 1C, and the control process is complicated and the cost is high. [0004] Therefore, it is necessary to provide an electronic device having a simple structure for indicating a state of charge when the electronic device is turned on or off. . SUMMARY OF THE INVENTION [0005] In view of the above, an electronic device capable of realizing a charging state prompt is provided to solve the problem of high cost in the prior art. [0006] An electronic device capable of indicating a state of charge of a battery, comprising a power supply interface, a selection circuit, a first control switch, a hardware control indicating unit, an LED module, a second control switch, and a software control indication Unit, a processing unit, a hardware control start unit, a charge control chip with 098124638, form number A0101, page 4, total 20 pages, 0904402066-0, 201105001 [0007] 0 [0008] [0009]
GG
[0010] 及一可充電電池。 該電源介面用於連接輸入電滹，該充電控制晶片用於對 該可充電電池充電進行控制。該硬體控制指示單元包括 一輸入端和一輸出端，該輸A端電連接於該電源介面， 當該輸入端有電源輸入時，鑌輸出端輸出一週期性脈衝 信號。該第一控制開關，電速接於该電源介面與該LED模 組正極端之間，包括一控制端與該硬體控制指示單元的 輸出端連接。 該軟體控制指示單元，與該處理單元連接’用於接收處 理單元的控制信號.6.該:第》二控制開關’連接在該LED模組 負極端與接:地點之間，包括一控制端與該軟趙控制指示 單元的一輸出端連接。 該選擇電路，位於該第一控制開關與該LED模組正極端之 間’在偵測到電子裝置關機充電時，導通該第一控制開 f , _丨；1| . ! 關與該LED模組正極端的連接，從而使能該硬體控制指示 單元；在偵測到電子展置開機充電時，切斷該第一控制 開關與該LED模組正i端的連接，從而禁能該硬體控制指 示單元，且將該LED模組正極端置於高電平。 其中，在該電子裝置關機充電時，該LED模組的負極端接 地而處於低電平，該硬體控制指示單元輸出該週期性脈 衝信號控制該第一控制開關交替導通和截止，交替導通 和截止該LED模組的正極端與電源介面的連接，該LED模 組閃爍顯示；在該電子裝置開機充電時，該LED模組的正 極端處於高電平，該軟體控制指示單元接受處理單元的 098124638 表單編號A0101 第5頁/共20頁 0982042066-0 201105001 [0011] 控制’控制該第二控制開關交替導通和截止，交替導通 和截止該LED模組的負極端與接地點的連接，該led模組 閃爍顯示。 從而，通過本發明簡易的電子裝置，實現了當電子裝置 開啟時選擇軟體控制的方式對充電狀態進行指示，當電 子裝置關閉時’選擇硬體控制的方式對充電狀態進行指 7|χ ° [0012] 【實施方式】 請參閱圖1，為本發明第一實施方式可指示電池充電狀態 的電子裝置的模組架構圖。該可指示電池充電狀態的電 子裝置（電子裝置）1包括—％璆介面埤：一選擇電路20 、一第一控制開關30、一硬艘控制指和單元40、一LED ( light-emitting diode，發光二級管| 模組50 ' — 第 二控制開關60、一軟體控制指示單元70、一處理單元8〇 、一硬體控制啟動單元9〇，一充電控制晶片1〇〇以及一可 充電電池110。該電子裝置1可為手機、電子相框等，該 電子裝置1還包括其他必要元件，由於與本發明無太大關 聯，故不在此贅述。 [0013] 該電源介面10用於接入充電電源，本實施方式中，該充 電電源為市電適配器。該充電控制晶片100用於對該可充 電電池11 0進行充電控制。 [0014] 098124638 、第一控制開關30包括一控制端、一第一導通端以及一 第一導通端，該第—導通端電連接於該電源介面10，該 第二導通端通過該選擇電路20與該LED模組50的正極端連 接。在本實施方式中，該LED模組50包括一個或多個發光 表單編號_ 第6頁/共20頁 201105001 [0015] [0016] Ο [0017] Ο 二極體。 該硬體控制指示單元40包括一輸入端與該電源介面1〇電 連接，用於接收輸入電源，以及一輸出端與該第一控制 開關30的控制端連接’當該輸入端接入電源時，該輸出 端輸出一週期性的脈衝信號。 該第二控制開關60連接在該LED模組50的負極端與接地點 之間，同樣包括一控制端 '一第一導通端以及一第二導 通端。該軟體控制指示單元7〇包括一輸入端與該處理單 元80連接，用於接收處理單元8〇產生的控制信號，以及 一輸出端與該第二控制開關6〇的控制端連接。 該選擇電路20位於該第一控制開關30與該lED模組5〇正 極端之間。該選擇電路2〇偵測電子裝置丨的開機與關機狀 態’其中’當偵測到電子裝置1關機狀態下充電時，該選 擇電路20導通該第一控制開關3〇與該LED模組5〇的正極 端的連接，從而使能該硬體控制指示單元4〇，且該LED模 組5 〇的負極端處於低電平狀態,β該竣控制指示單元4 〇 ...1 -- -¾¾ k ?* i 的輸入端通過該電源介面10獲得一輸入電源，從而輸出 週期性的脈衝信號控制該第一控制開關30交替導通與截 止’相應地交替導通和截止該LED模組50的正極端與電源 介面10的連接，使得該LED模組50的電流通路交替導通和 截止，該LED模組5〇閃爍發光。 當該選擇電路20偵測到該電子裝置1處於開機狀態下充電 時’該選擇電路20切斷該第一控制開關30與該LED模組 5〇的正極端的連接，從而禁能該硬體控制指示單元4〇。 098124638 表單編號A0101 第7頁/共20頁 0982042066-0 [0018] 201105001 而在该電子裝置1開機狀態下充電時該LED模組5 〇的正 極端處於高電平狀態，該軟體控制指示單元70在可充電 電池110充電狀態下，接受該處理單元8〇的控制控制該 第二控制開關60交替導通與截止，從而交替導通和截止 S亥LED模組50的負極端與接地點的連接，使得該LED模組 50的電流通路交替導通和截止，該LED模組5〇閃爍發光。 [0019]在本實施方式中’該電子裝置1還包括一硬體控制啟動單 元90。該硬體控制啟動單元9〇位於該電源介面1〇 '該硬 體控制指示單元4〇以及該第一控制開關3〇之間。該硬體 控制啟動單元9〇包括一控制端與充電控制晶片ι〇〇的一指 示端連接’其中，該充電控制晶片1〇〇的指示端在該可充 電電池110處於未充滿狀態卞:輸出一充電信號至該硬體控 制啟動單元90，該硬體控制啟動單元9〇導通電源介面1〇 到該硬體控制指示單元40輸入端的電流，該硬體控制指 示單元40輸出該週期性的脈衝信號控制該第一控制開關 30交替導通和截止從而控制該LED模組50閃爍顯示。在該 可充電電池110電‘量充滿時，該充電控制晶片100的指示 端在該可充電電池110處於未充滿狀態下輸出一停止信號 至該硬體控制啟動單元90，該硬體控制啟動單元90截止 電源介面10到該硬體控制指示單元40輸入端的電流。從 而，在該可充電電池110滿充時’該LED模組50正極端與 電源介面10的連接被切斷，即該LED模組50的電流通路被 截止，該LED模組50停止閃爍。 [0020] 在電子裝置1開機狀態下充電時，該處理單元80在該可充 電電池110滿充時，控制該軟體控制指示單元7 〇截止該第 098124638 表單編號A0101 第8頁/共20頁 0982042066-0 201105001 [0021] 二控制開關60，該LED模組50停止閃爍。 請參閱圖2，為本發明可指示電池充電狀態的電子裝置1 的具體電路圖。該硬體控制啟動單元90為一低電平控制 開關，包括一控制端、一第一導通端以及一第二導通端 。在本實施方式中，該第一控制開關30、該第二控制開 關60以及該硬體控制啟動單元90分別以MOS電晶體（M〇s 管）Ql、Q2、Q3為例進行說明，該第一控制開關30、該 第二控制開關60以及該硬體控制啟動單元9〇的控制端、 Ο 第一導通端以及第二導通端分別對應MOS管的閘極、源極 以及汲極。且作為第一控制開關30和硬體控制啟動單元 90的Q1和Q3採用PM0S管，作為第二控制開關60的Q2採用 NMOS管。在其他實施方式中，該第一控制開關3〇和硬體 控制啟動單元90可為PNP三極管，該第二控制開關60玎為 NPN三極管。 [0022] Ο 該LED模組50包括多個並，的聲光二極體led。該選擇電 -I - - = ,1 ^ , . i 路20包括一第一單嚮導通開關D1·以及一第二單嚮導通開 關D2 ’該第一單嚮導通開關D1正嚮聲通于該PMOS管Q1的 汲極與該LED模組50的正極端之間’該第二單嚮導通開關 D2正嚮導通于一第一電壓正極端v〇N與該LED模組的正極 端之間。該第一電壓正極端VON為電子裝置開啟後獲得的 工作電壓，該第一電壓正極端在電子裝置1關閉時處於低 電平。 該硬體控制指示單元40具體為一脈衝信號發生電路40， 該脈衝信號發生電路40包括一輸入端與PMOS管Q3的汲極 連接，一輸出端與該PMOS管Q1的閘極連接。該PMOS管Q3 098124638 表單編號A0101 第9頁/共20頁 0982042066-0 [0023] 201105001 的源極與電源介面1Q的電壓正極端連接，祕與該PM0S 管Q1的源㈣及該脈衝料發生電㈣的輸人端分別連 接，問極與充電控制晶片^的指示端連接。其中該充電 控制晶片1GG的指示端在該可充電電池ug處於未充滿的 狀態下輸出—低電平的充電信號，在該可充電電池滿充 狀態下輸出—高電平的停止信號。從而當該可充電電池 110處於充電狀態下，該PM〇S管Q3導通，當該可充電電 池110滿充時，該PMOS管Q3截止。 [0024] [0025] 098124638 該軟體控制指示單元7G包括—第三控制開關m，該第三 控制開關701同樣包括-控制端、—第—導通端以及一第 二導通端，在本實施方式中，該第三控制開關m以则 三極_為例作為說明’該第三控制開關爾的控制端、 第一導通端以及—第二導通端分別對應該NPN三極管Q4的 基極'發射極以及集電極。在其他實施方式中，該第三 控制開關701可為NMOS管。 該削三極管Q4的基極通過—電阻R1與處理單元的脈衝信 號引腳連接’没極通過-電阻R2與—第二電壓正極端 vpow連接，源極接地，該NPN三極管料的汲極還與該 _S管Q2的閘極連接。該第二電壓正極端麵與電源介 面10的正極端連接，當該電源介面_人電源適配器為 充電電電池110充電時’該第二電壓正極端vp〇w處於高電 。"亥NMOS管Q2的源極接地，汲極與該LED模組5〇的負 極端連接。 、電子裝置1處於關機狀態，且該電源介面10接入市電 、-器為忒可充電電池丨丨〇充電時該⑽⑽管叫的閘極 表單編號八_ « ,n 〇λ ^ [0026] 201105001 通過該電阻R2連接到該t二電壓正極端vp〇w而獲得一高 電平’從而該NM0S管Q2處於導通狀態，該LED模組50的 負極端通過該NM0S管Q2接地而處於低電平。如前所述， 在可充電電池11 0處於未充滿狀態時，PM〇s管Q3導通， 該脈衝信號發生電路40的輸入端通過該導通的pmos管Q3 與電源介面10連接，接收輸入的電源而輸出週期性的脈 衝信號，從而控制該PM0S管Q1交替處於導通截止狀態， 從而該LED模組50的正極端交替處於高電平和低電平狀態 ，該LED模組50閃爍發光。 〇 [0027] 在電子裝置1關機充電狀態下充電，當該可充電電池11〇 滿充時，該PMbs管Q3截止’ 一方面，脈衝信號發生電路 40無電源輸入而不再輸出週期性的脈衝信號，另一方面 ，電源埠10與LED模組正極端之間的連接被切斷，該led 模組50無電流流過，故該LED模組50停止閃爍，處於想滅 狀態。 [0028] 在該電子裝置1開機時’該第一電壓正極端V0N獲得一高 〇 電平，從而反向截止該第一單嚮f通開關D1，該第一控 制開關30與該LED模組50正極端的連接被切斷，從而該硬 體控制指示單元40對該第一控制開關30的控制不再影響 該LED模組50正極端的電平狀態。該LED模組50的正極端 通過該第二單嚮導通開關D2與該第一電壓正極端V0N連接 ，從而一直處於高電平狀態。在該電子裝置1開機以及對 該可充電電池110進行充電時，該處理單元80通過該脈衝 信號引腳輸出一週期性的脈衝信號，從而控制該NPN三極 管Q4不斷導通截止。 098124638 表單編號A0101 第11頁/共20頁 0982042066-0 201105001 [0029] 當該NPN三極管Q4截止時，該NM0S管Q2的閉極通過電阻 R1連接到該第二電壓正極端VP0W而獲得一高電平，從而 該NM0S管Q2導通’該LED模組50的負極端接地而處於低 電平’該LED模組50通電而發光。當該npn三極管Q4導通 時’該NM0S管Q2的閘極通過該導通的NPN三極管Q4接地 ，從而該NM0S管Q2截止，該LED模組50由於電流通路被 截斷而總滅。從而，通過該處理單元8 〇輸出週期性的脈 衝信號，通過控制該NPN三極管Q4不斷截止和導通，來不 斷導通或截止該丽0S管Q2而使得該LED模組50閃爍顯示 〇 [0030] 在電子裝置1開機而通過軟體控制指示單元70控制該LED 模組50進行顯示時，當該可充電電池11〇處於滿充狀態時 ，該處理單元80停止輸出脈衝信號，而通過輸出一高電 平信號導通該NPN三極管Q4，從而該NM0S管Q2的閘極通 過該NPN三極管Q4接地，該NM0S管Q2處於截止狀態，該 LED模組50停止閃爍而處於熄滅狀態。 [0031] 因此，本發明在電子裝置1關機時，當對其中的可充電電 池110進行充電時，通過硬體的方式對LED模組50進行充 電狀態指示控制’在電子裝置開機時，通過軟體的方式 對LED模組50進行充電狀態指示控制。並且，根據該可充 電電池110是否已經充滿提供不同的顯示方式，即當可充 電電池110處於未滿充狀態時，控制該LED模組50閃爍顯 示，當可充電電池110處於滿充狀態時，控制該LED模組 50停止閃爍而處於熄滅狀態，k而給人以不同的提示。 【圖式簡單說明】 098124638 表單編號A0101 第12頁/共20頁 0982042066-0 201105001 [0032] 圖1為可指示電池充電狀態的電子裝置較佳實施方式的模 組架構圖。 [0033] 圖2為可指示電池充電狀態的電子裝置較佳實施方式的具 體電路圖。 【主要元件符號說明】 電源介面 10 選擇電路 20 第一控制開關 30 硬體控制指示 XVO — 早兀 40 LED模組 50 第二控制開關 60 軟體控制指示 rjO -* 早兀 70 處理單元 80 硬體控制啟動 XJW — 早兀 90 充電控制晶片 100 可充電電池 110 第三控制開關 701 電阻 R1/R2/R3 PM0S電晶體 管 Ql/ Q3 NMOS電晶體 管 Q2 ΝΡΝ三極管 Q4 發光二極體 LED 第一電壓正極 端 V ON 第二電壓正極 端 V POW 第一單嚮導通 開關 D1 第一單嚮導通 開關 D2 098124638 表單編號A0101 第13頁/共20頁 0982042066-0[0010] and a rechargeable battery. The power supply interface is used to connect an input power supply, and the charge control chip is used to control charging of the rechargeable battery. The hardware control indicating unit comprises an input end and an output end. The input end A is electrically connected to the power supply interface. When the input end has a power input, the output end outputs a periodic pulse signal. The first control switch is connected between the power supply interface and the positive terminal of the LED module, and includes a control terminal connected to the output end of the hardware control indicating unit. The software control indicating unit is connected to the processing unit for controlling signals for receiving the processing unit. 6. The second control switch is connected between the negative terminal of the LED module and the location: including a control terminal. Connected to an output of the soft control control unit. The selection circuit is located between the first control switch and the positive terminal of the LED module. When the electronic device is turned off and charged, the first control is turned on, and the _丨; 1|. Connecting the positive terminal of the group to enable the hardware control indicating unit; when detecting the electronic display charging, cutting off the connection between the first control switch and the positive end of the LED module, thereby disabling the hardware The indicating unit is controlled, and the positive terminal of the LED module is placed at a high level. Wherein, when the electronic device is powered off, the negative terminal of the LED module is grounded to be at a low level, and the hardware control indicating unit outputs the periodic pulse signal to control the first control switch to be alternately turned on and off, and alternately turned on and The LED module is flashingly displayed when the positive terminal of the LED module is connected to the power supply interface; when the electronic device is powered on, the positive terminal of the LED module is at a high level, and the software control indicating unit accepts the processing unit 098124638 Form No. A0101 Page 5 of 20 0982042066-0 201105001 [0011] Control 'controls the second control switch to alternately turn on and off, alternately turn on and off the connection of the negative terminal of the LED module to the ground point, the led The module flashes. Therefore, with the simple electronic device of the present invention, the charging state is indicated by selecting the software control mode when the electronic device is turned on, and the charging state is indicated by the method of selecting the hardware control when the electronic device is turned off. [Embodiment] Please refer to FIG. 1 , which is a block diagram of an electronic device capable of indicating a state of charge of a battery according to a first embodiment of the present invention. The electronic device (electronic device) 1 that can indicate the state of charge of the battery includes a -% interface 埤: a selection circuit 20, a first control switch 30, a hard control finger and unit 40, and an LED (light-emitting diode). Light-emitting diode | module 50' - second control switch 60, a software control indicating unit 70, a processing unit 8A, a hardware control starting unit 9A, a charging control chip 1 and a rechargeable battery 110. The electronic device 1 can be a mobile phone, an electronic photo frame, etc., and the electronic device 1 further includes other necessary components, and is not described herein because it is not related to the present invention. [0013] The power interface 10 is used for charging. In the present embodiment, the charging power source is a commercial power adapter. The charging control chip 100 is used for charging control of the rechargeable battery 110. [0014] 098124638, the first control switch 30 includes a control terminal, a first The first conductive terminal is electrically connected to the power supply interface 10, and the second conductive terminal is connected to the positive terminal of the LED module 50 through the selection circuit 20. Wherein, the LED module 50 includes one or more illuminating form numbers _ 6th page / 20 pages 201105001 [0015] 00 [0017] Ο diode. The hardware control indicating unit 40 includes an input The terminal is electrically connected to the power interface 1 , for receiving input power, and an output is connected to the control end of the first control switch 30. When the input terminal is connected to the power source, the output terminal outputs a periodic pulse. The second control switch 60 is connected between the negative terminal of the LED module 50 and the grounding point, and also includes a control terminal 'a first conductive terminal and a second conductive terminal. The software control indicating unit 7 includes An input terminal is connected to the processing unit 80 for receiving a control signal generated by the processing unit 8A, and an output terminal is connected to the control terminal of the second control switch 6A. The selection circuit 20 is located at the first control switch 30. The selection circuit 2 detects the power-on and power-off states of the electronic device 其中, wherein the selection circuit 20 turns on the first time when the electronic device 1 is detected to be powered off. One control 3〇 connection with the positive terminal of the LED module 5〇, thereby enabling the hardware control indicating unit 4〇, and the negative terminal of the LED module 5〇 is in a low state, β the control instruction unit 4输入...1 - -3⁄43⁄4 k ?* The input terminal of the i obtains an input power through the power interface 10, thereby outputting a periodic pulse signal to control the alternately conducting and deactivating the first control switch 30 to alternately conduct and The connection between the positive terminal of the LED module 50 and the power interface 10 is such that the current path of the LED module 50 is alternately turned on and off, and the LED module 5 blinks. When the selection circuit 20 detects that the electronic device 1 is charged in the power-on state, the selection circuit 20 cuts off the connection between the first control switch 30 and the positive terminal of the LED module 5〇, thereby disabling the hardware. The control indicating unit 4〇. 098124638 Form No. A0101 Page 7 / Total 20 Page 0982042066-0 [0018] 201105001 While the positive end of the LED module 5 〇 is in a high state when the electronic device 1 is powered on, the software control indicating unit 70 In the charging state of the rechargeable battery 110, the control of the processing unit 8A is controlled to alternately turn on and off the second control switch 60, thereby alternately turning on and off the connection between the negative terminal of the S-LED module 50 and the ground point, so that The current path of the LED module 50 is alternately turned on and off, and the LED module 5 〇 flashes. In the present embodiment, the electronic device 1 further includes a hardware control activation unit 90. The hardware control activation unit 9 is located between the power supply interface 1' and the first control switch 3A. The hardware control starting unit 9A includes a control end connected to an indicating end of the charging control chip 〇〇, wherein the indicating end of the charging control chip 1 is in an unfilled state of the rechargeable battery 110: output a charging signal is sent to the hardware control starting unit 90, and the hardware control starting unit 9 turns on the power of the power supply interface 1 to the input end of the hardware control indicating unit 40, and the hardware control indicating unit 40 outputs the periodic pulse. The signal controls the first control switch 30 to be turned on and off alternately to control the LED module 50 to flash display. When the rechargeable battery 110 is fully charged, the indicating end of the charging control chip 100 outputs a stop signal to the hardware control starting unit 90 when the rechargeable battery 110 is in an unfilled state, the hardware control starting unit 90 cuts off the power of the power interface 10 to the input of the hardware control indicating unit 40. Therefore, when the rechargeable battery 110 is fully charged, the connection between the positive terminal of the LED module 50 and the power supply interface 10 is cut off, that is, the current path of the LED module 50 is turned off, and the LED module 50 stops blinking. [0020] When the electronic device 1 is charged in the power-on state, the processing unit 80 controls the software control instruction unit 7 when the rechargeable battery 110 is fully charged, and closes the 098124638 form number A0101, page 8 / total 20 pages 0904402066 -0 201105001 [0021] Two control switches 60, the LED module 50 stops blinking. Please refer to FIG. 2 , which is a specific circuit diagram of the electronic device 1 capable of indicating the state of charge of the battery according to the present invention. The hardware control starting unit 90 is a low level control switch including a control end, a first conductive end and a second conductive end. In the present embodiment, the first control switch 30, the second control switch 60, and the hardware control activation unit 90 are respectively described by taking MOS transistors (M〇s tubes) Q1, Q2, and Q3 as an example. A control switch 30, the second control switch 60, and the control end of the hardware control start unit 9A, the first conductive end and the second conductive end respectively correspond to the gate, the source and the drain of the MOS transistor. Further, Q1 and Q3 as the first control switch 30 and the hardware control start unit 90 employ a PM0S tube, and Q2 as the second control switch 60 employs an NMOS tube. In other embodiments, the first control switch 3A and the hardware control enable unit 90 can be PNP transistors, and the second control switch 60A is an NPN transistor. [0022] The LED module 50 includes a plurality of acousto-optic diodes. The selection circuit -I - - = , 1 ^ , . i includes a first one-way switch D1 · and a second one-way switch D2 'the first one-way switch D1 is positively compliant with the Between the drain of the PMOS transistor Q1 and the positive terminal of the LED module 50, the second one-way switch D2 is forwarded between a first voltage positive terminal v〇N and a positive terminal of the LED module. The positive terminal VON of the first voltage is an operating voltage obtained after the electronic device is turned on, and the positive terminal of the first voltage is at a low level when the electronic device 1 is turned off. The hardware control indicating unit 40 is specifically a pulse signal generating circuit 40. The pulse signal generating circuit 40 includes an input terminal connected to the drain of the PMOS transistor Q3, and an output terminal connected to the gate of the PMOS transistor Q1. The PMOS transistor Q3 098124638 Form No. A0101 Page 9 / Total 20 pages 098442066-0 [0023] The source of 201105001 is connected to the positive terminal of the voltage of the power supply interface 1Q, and the source of the PM0S tube Q1 (4) and the pulse material are generated. (4) The input terminals of the charging control chip are connected to each other. The indicating end of the charging control chip 1GG outputs a low-level charging signal when the rechargeable battery ug is in an unfilled state, and outputs a high-level stop signal in the fully charged state of the rechargeable battery. Therefore, when the rechargeable battery 110 is in the charging state, the PM〇S tube Q3 is turned on, and when the rechargeable battery 110 is fully charged, the PMOS transistor Q3 is turned off. [0025] 098124638 The software control indicating unit 7G includes a third control switch m, which also includes a control terminal, a first conductive terminal and a second conductive terminal. In this embodiment, the third control switch 701 also includes a control terminal, a first conductive terminal, and a second conductive terminal. The third control switch m takes the three-pole _ as an example to illustrate that the control terminal, the first conductive terminal, and the second conductive terminal of the third control switch respectively correspond to the base 'emitter of the NPN transistor Q4 and collector. In other embodiments, the third control switch 701 can be an NMOS transistor. The base of the trim transistor Q4 is connected to the pulse signal pin of the processing unit through the resistor R1. The gate is connected to the second voltage positive terminal vpow, and the source is grounded. The drain of the NPN triode is also The gate of the _S tube Q2 is connected. The second voltage positive terminal is connected to the positive terminal of the power supply interface 10, and when the power interface _ human power adapter charges the rechargeable battery 110, the second voltage positive terminal vp〇w is at a high level. " The source of the NMOS transistor Q2 is grounded, and the drain is connected to the negative terminal of the LED module 5〇. The electronic device 1 is in a shutdown state, and the power interface 10 is connected to the mains, and the rechargeable device is charged. The (10) (10) tube is called the gate form number eight__, n 〇λ ^ [0026] 201105001 The NMOS transistor Q2 is in a conducting state by the resistor R2 connected to the positive terminal vp 〇 w of the t voltage, so that the negative terminal of the LED module 50 is grounded through the NMOS transistor Q2. . As described above, when the rechargeable battery 110 is in an unfilled state, the PM〇s tube Q3 is turned on, and the input terminal of the pulse signal generating circuit 40 is connected to the power supply interface 10 through the turned-on pmos tube Q3, and receives the input power. The periodic pulse signal is output, thereby controlling the PM0S tube Q1 to be alternately turned on and off, so that the positive terminal of the LED module 50 is alternately in a high level and a low level state, and the LED module 50 flashes and emits light. 〇[0027] When the electronic device 1 is turned off and charged, when the rechargeable battery 11 is fully charged, the PMbs tube Q3 is turned off. On the one hand, the pulse signal generating circuit 40 has no power input and no longer outputs periodic pulses. The signal, on the other hand, the connection between the power supply port 10 and the positive terminal of the LED module is cut off, and the LED module 50 stops flowing, so that the LED module 50 stops blinking and is in a state of extinction. [0028] When the electronic device 1 is powered on, the first voltage positive terminal V0N obtains a high level, thereby reversely blocking the first one-way f-switch D1, the first control switch 30 and the LED module. The connection of the positive terminal of 50 is cut off, so that the control of the first control switch 30 by the hardware control indicating unit 40 no longer affects the level state of the positive terminal of the LED module 50. The positive terminal of the LED module 50 is connected to the first voltage positive terminal V0N through the second one-way switch D2, so that it is always in a high state. When the electronic device 1 is turned on and the rechargeable battery 110 is charged, the processing unit 80 outputs a periodic pulse signal through the pulse signal pin, thereby controlling the NPN transistor Q4 to be continuously turned on and off. 098124638 Form No. A0101 Page 11 of 20 0982042066-0 201105001 [0029] When the NPN transistor Q4 is turned off, the closed end of the NM0 transistor Q2 is connected to the second voltage positive terminal VP0W through the resistor R1 to obtain a high voltage. Therefore, the NM0S tube Q2 is turned on 'the negative terminal of the LED module 50 is grounded and is at a low level'. The LED module 50 is energized to emit light. When the npn transistor Q4 is turned on, the gate of the NMOS transistor Q2 is grounded through the turned-on NPN transistor Q4, so that the NMOS transistor Q2 is turned off, and the LED module 50 is always turned off due to the current path being cut off. Therefore, the processing unit 8 outputs a periodic pulse signal, and by continuously controlling the NPN transistor Q4 to be continuously turned off and on, continuously turning on or off the NMOS transistor Q2 to cause the LED module 50 to flash display 〇 [0030] When the electronic device 1 is turned on and the LED module 50 is controlled by the software control instruction unit 70 for display, when the rechargeable battery 11 is in the fully charged state, the processing unit 80 stops outputting the pulse signal and outputs a high level. The signal turns on the NPN transistor Q4, so that the gate of the NM0S transistor Q2 is grounded through the NPN transistor Q4, the NMOS transistor Q2 is in an off state, and the LED module 50 stops blinking and is in an extinguished state. Therefore, when the electronic device 1 is powered off, when charging the rechargeable battery 110 therein, the charging state indication control of the LED module 50 is performed by hardware. When the electronic device is powered on, the software is passed through the software. The method of charging state indication control of the LED module 50 is performed. Moreover, according to whether the rechargeable battery 110 is already full, different display modes are provided, that is, when the rechargeable battery 110 is in an undercharged state, the LED module 50 is controlled to flash display, when the rechargeable battery 110 is in a fully charged state, The LED module 50 is controlled to stop blinking and is in an extinguished state, and k gives a different prompt. [Simple Description of the Drawings] 098124638 Form No. A0101 Page 12 of 20 0982042066-0 201105001 [0032] FIG. 1 is a block diagram of a preferred embodiment of an electronic device that can indicate a state of charge of a battery. 2 is a detailed circuit diagram of a preferred embodiment of an electronic device that can indicate a state of charge of a battery. [Main component symbol description] Power interface 10 Select circuit 20 First control switch 30 Hardware control indication XVO — Early 40 LED module 50 Second control switch 60 Software control indication rjO -* Early 70 Processing unit 80 Hardware control Start XJW — early 90 charge control chip 100 rechargeable battery 110 third control switch 701 resistor R1/R2/R3 PM0S transistor Ql/ Q3 NMOS transistor Q2 ΝΡΝ transistor Q4 LED diode first voltage positive terminal V ON Second voltage positive terminal V POW First one-way switch D1 First one-way switch D2 098124638 Form number A0101 Page 13 / Total 20 pages 0904402066-0