TWI333289B - Charge capacity measuring method and system and electronic equipment using the same - Google Patents
Charge capacity measuring method and system and electronic equipment using the same Download PDFInfo
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- TWI333289B TWI333289B TW095136401A TW95136401A TWI333289B TW I333289 B TWI333289 B TW I333289B TW 095136401 A TW095136401 A TW 095136401A TW 95136401 A TW95136401 A TW 95136401A TW I333289 B TWI333289 B TW I333289B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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099年06月30日接正番換百 1333289 · : · 六、發明說明: 【發明所屬之技術領域】 [0001] 本發明涉及一種電量檢測方法、使用此方法之電量檢測 系統及電子設備,尤其涉及一種供電裝置剩餘電量之檢 測方法及使用此方法之電量檢測系統和電子設備。 【先前技術】 [0002] 隨著科技之曰新月異,越來越多之電子產品走向市場, 如行動電話、個人數位助理(Personal Digital Αεί si stant,PDA )和筆記本電腦等。通常,這些電子產品 靠電池供電,尤其是充電電池。電池之剩餘電量對各電 子產品之工作存在很大影響丄:因Jt,车拫在-電子產品工 . , -1· , 作時,有必要對其電池之剩餘電「影做丨出赞叫。 [0003] 現有電池剩餘電量檢測方法主要有兩種:一種是電流積 演算法;一種是電壓測量法。該電流積演算法是以電流 積分(Current Integration)為基礎,利用記憶體存 儲電池原電量值,在一預定刷新週期,巧對充電電池之充/ ' · .; ·· ."::,_·” ' ·. ·· • 放電電流積分,以得到充/放電^量,從而根據總電量值 ...... 和充/放電電量值計算出剩餘電量值。電壓測量法以電壓 測量為基礎,在電子產品出廠前進行測量,並將該電子 產品中充電電池之電壓值與剰餘電量值之對應關係表存 儲於電子產品之記憶體中。使用時,藉由檢測充電電池 兩極間之電壓值,並查詢電壓值與剩餘電量值之對應關 係表,從而得到充電電池之剩餘電量值。 [0004] 在電流積演算法中,電池長期不工作時,電池内部化學 反應引起之自放電現象,使得充電電池實際電量值與記 095136401 表單編號A0101 第3頁/共20頁 0993232635-0 1333289 099年06月30日俊正替玲頁 憶體中存儲之總電量值不同,導致計算所得之剩餘電量 值產生較大誤差。 [0005] 在電壓測量法中,只有在電池不連接任何負載,並且是 新電池之情況下,才存在電池電壓值與剩餘電量值之間 簡單對應關係。當電池連接負載時,電池兩極電壓就會 因為其内部阻抗所引起之壓降而產生檢測誤差。當電池 用了一段時間產生老化現象時,電池電壓值與剩餘電量 之對應關係也會發生變化,而且電池之電壓值還隨溫度 之變化而變化。 【發明内容】 [0006] 有鑒於此,有必要提出一種精確的電量檢測方法。 [0007] 同時,提供一種精確的電量檢測系統。 [0008] 另外,還提供一種精確檢測電量的電子設備。 [0009] 一種電量檢測方法,包括如下步驟: [0010] 測量供電裝置初始電壓值; [0011] 根據該初始電壓值查詢電壓值與剩餘電量值對應關係表 ,得到該供電裝置之初始剩餘電量值; [0012] 積算流過該供電裝置之充/放電電流,得到充/放電電量 值;以及 [0013] 根據該初始剩餘電量值以及該充/放電電量值計算出該供 電裝置之當前剩餘電量值。 [0014] —種電量檢測系統,包括:On June 30, 099, the company was selected for the first time. For the purpose of the invention, the invention relates to a method for detecting electricity, a power detecting system using the same, and an electronic device, in particular The invention relates to a method for detecting remaining power of a power supply device and a power detecting system and an electronic device using the same. [Prior Art] [0002] With the rapid development of technology, more and more electronic products are coming to market, such as mobile phones, personal digital assistants (PDAs) and laptops. Typically, these electronics are battery powered, especially rechargeable batteries. The remaining power of the battery has a great impact on the work of each electronic product. J: Because Jt, the rut is in the electronic product industry. , -1· , when it is necessary, it is necessary to praise the remaining electricity of the battery. [0003] There are two main methods for detecting the remaining battery power: one is the current integration algorithm; the other is the voltage measurement method. The current integration algorithm is based on current integration and uses the memory to store the battery. The value, in a predetermined refresh cycle, the charge of the rechargeable battery / ' · . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The remaining charge value is calculated based on the total charge value... and the charge/discharge power value. The voltage measurement method is based on voltage measurement, and is measured before the electronic product is shipped from the factory, and the correspondence table between the voltage value of the rechargeable battery and the remaining power value in the electronic product is stored in the memory of the electronic product. In use, by detecting the voltage value between the two poles of the rechargeable battery, and querying the correspondence table between the voltage value and the remaining power value, the remaining power value of the rechargeable battery is obtained. [0004] In the current integration algorithm, when the battery is not working for a long time, the self-discharge phenomenon caused by the internal chemical reaction of the battery causes the actual battery value of the rechargeable battery to be recorded with 095136401 Form No. A0101 Page 3/20 pages 0993232635-0 1333289 099 On June 30th, the value of the total electricity stored in the page was different, which led to a large error in the calculated residual power value. [0005] In the voltage measurement method, there is a simple correspondence between the battery voltage value and the remaining power value only in the case where the battery is not connected to any load and is a new battery. When the battery is connected to the load, the voltage at the two poles of the battery will cause a detection error due to the voltage drop caused by its internal impedance. When the battery is used for a period of time to cause aging, the correspondence between the battery voltage value and the remaining power also changes, and the voltage value of the battery also changes with temperature. SUMMARY OF THE INVENTION [0006] In view of this, it is necessary to propose an accurate power detecting method. [0007] At the same time, an accurate power detection system is provided. In addition, an electronic device that accurately detects a power amount is also provided. [0009] A method for detecting a power quantity, comprising the following steps: [0010] measuring an initial voltage value of the power supply device; [0011] querying a correspondence table between the voltage value and the remaining power value according to the initial voltage value, and obtaining an initial remaining power value of the power supply device [0012] accumulating the charge/discharge current flowing through the power supply device to obtain a charge/discharge power value; and [0013] calculating a current remaining power value of the power supply device according to the initial remaining power value and the charge/discharge power value . [0014] A power detection system comprising:
095136401 表單編號A0101 第4頁/共20頁 0993232635-0 099年06月30日修正替換頁 1333289 [0015] 資料存儲模組,用於存儲供電裝置電壓值與剩餘電量值 對應關係表; [0016] 電流積算單元,用於積算流過該供電裝置之充/放電電流 ,以得到充/放電電量值; [0017] 電壓測量單元,用於測量該供電裝置之電壓值; [0018] 查詢單元,用於根據該電壓測量單元測得之電壓值查詢 該資料存儲模組中之電壓值與剩餘電量值對應關係表, 得到該供電裝置之初始剩餘電量值;以及 [0019] 資料計算單元,用於根據該初始剩餘電量值和該電流積 算單元積算得出充/放電電量灌詩^出-該裝置之當前 剩餘電量值。 [0020] 一種電子設備,包括: [0021] 供電裝置,用於存儲並提供電量; [0022] 内部負載,包括工作單元和顯示單元;以及 Φ [0023] 電量偵測系統,用於偵測該供電尊置之剩餘電量;該電 量偵測系統包括: [0024] 資料存儲模組,用於存儲該供電裝置電壓值與剩餘電量 值對應關係表; [0025] 電流積算單元,用於積算流過該供電裝置充/放電之電流 [0026] [0027] [0027] 電壓測量單元,用於測量該供電裝置電壓值; 查詢單元,用於根據電壓值查詢電壓值與剩餘電量值對 095136401 表單編號Α0101 第5頁/共20頁 0993232635-0 1333289 _ 099年06月30日接正替换頁 應關係表以獲得初始剩餘電量值;以及 [0028] 資料計算單元,用於根據該初始剩餘電量值和該電流積 算單元積算得出之充/放電電量值計算出該供電裝置當前 剩餘電量值。 [0029] 本電量檢測方法、使用此方法之電量檢測系統及電子設 備,藉由測量電壓查找電壓電量關係表確定積分起始時 刻電量值,避免了由於自放電引起之積分起始時刻電量 值變化產生之誤差,從而提高了供電裝置剩餘電量之檢 測精度。 ( 【實施方式】 [0030] 請參閱圖1,供電裝置20分別與充電農置10、負載30和電 量檢測系統4相連。充電裝置10可以是交流充電器或直流 充電器,用於為供電裝置20充電。供電裝置20可以是充 電電池,用於存儲並提供電量或電能給負載30。電量檢 測系統4用於檢測供電裝置20剩餘電量。 ' [0031] 電量檢測系統4包括卩^檢測模組41、,處理模組42、資 原 剩 料存儲模組4 3和顯示模組4 4。其中Q表示電量檢測系統 原 4工作時,積分起始時刻供電裝置20原剩餘電量值, 剩 表示供電裝置20當前剩餘電量值。 [0032] Q β檢測模組41用於檢測積分起始時刻供電裝置2 0原剩餘 原 電量值。Q#處理模組42用於處理供電裝置20當前剩餘電 量。 [0033] 資料存儲模組43可以是一般可讀寫記憶體,用於存儲供 電裝置20之剩餘電量值431及供電裝置20兩極開路電壓值 095136401 表單編號A0101 第6頁/共20頁 0993232635-0 1333289 099年06月30日修正替換頁 與剩餘電量值對應關係表432 (下稱電壓電量關係表), 其中電壓電量關係表中剩餘電量值之類型包括具體數值 和百分比值之至少一種,該電壓電量關係表之開路電壓 值和剩餘電量值可以更新。為便於理解,以下以常溫( 20 °C )、恒流(55OmA )放電時,電壓電量關係表為例進 行說明,如表1該(限於篇幅,本表僅列出部分對應關係 [0034] 表1常溫恒流放電電壓電量關係表 開路 電壓值 (V) 4.20 4.06 3.98 3.92 3.87 3.82 3.79 3.77 3.74 3.68 3.45 剩餘 電量值 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 5% 百分比095136401 Form No. A0101 Page 4 / Total 20 Page 0993232635-0 Correction Replacement Page 1333289 of June 30, 2017 [0015] The data storage module is used to store a correspondence table between the voltage value of the power supply device and the remaining power value; [0016] a current integration unit for accumulating the charge/discharge current flowing through the power supply device to obtain a charge/discharge power value; [0017] a voltage measurement unit for measuring a voltage value of the power supply device; [0018] query unit, Querying a correspondence table between the voltage value and the remaining power value in the data storage module according to the voltage value measured by the voltage measuring unit, to obtain an initial remaining power value of the power supply device; and [0019] a data calculating unit, configured to The initial remaining power value and the current integrating unit are integrated to obtain a charging/discharging power source - the current remaining power value of the device. [0020] An electronic device, comprising: [0021] a power supply device for storing and providing power; [0022] an internal load, including a work unit and a display unit; and Φ [0023] a power detection system for detecting the The remaining power of the power supply; the power detection system includes: [0024] a data storage module for storing a correspondence table between the voltage value of the power supply device and the remaining power value; [0025] a current integration unit for integrating the flow The charging/discharging current of the power supply device [0026] [0027] The voltage measuring unit is configured to measure the voltage value of the power supply device; the query unit is configured to query the voltage value and the remaining power value according to the voltage value to the 095136401 form number Α 0101 Page 5 of 20 pages 0993232635-0 1333289 _ June 30, 2017, the replacement page should be related to the table to obtain the initial remaining power value; and [0028] the data calculation unit for the initial remaining power value and the The charge/discharge power value calculated by the current integration unit calculates the current remaining power value of the power supply device. [0029] The electric quantity detecting method, the electric quantity detecting system and the electronic device using the method, determine the electric quantity value of the integral starting time by measuring the voltage search electric quantity relationship table, thereby avoiding the change of the electric quantity value of the integral starting time due to self-discharge The error is generated, thereby improving the detection accuracy of the remaining power of the power supply device. [Embodiment] Referring to Fig. 1, a power supply device 20 is connected to a charging farm 10, a load 30, and a power detecting system 4. The charging device 10 may be an AC charger or a DC charger for use as a power supply device. The charging device 20 can be a rechargeable battery for storing and supplying power or power to the load 30. The power detecting system 4 is configured to detect the remaining power of the power supply device 20. [0031] The power detecting system 4 includes a detecting module 41. The processing module 42, the residual material storage module 43 and the display module 44. wherein Q represents the original remaining power value of the power supply device 20 when the power detecting system is working in the original 4, and the remaining power is indicated. The current remaining power value of the device 20. [0032] The Qβ detection module 41 is configured to detect the original remaining original power value of the power supply device 20 at the integration start time. The Q# processing module 42 is configured to process the current remaining power of the power supply device 20. The data storage module 43 can be a general readable and writable memory for storing the remaining power value 431 of the power supply device 20 and the two-pole open circuit voltage value of the power supply device 20 095136401 Form No. A0101 Page 6 of 20 0993232635-0 1333289 Correction of the replacement page and the remaining charge value table 432 (hereinafter referred to as the voltage and electricity relationship table) on June 30, 099, wherein the type of the remaining charge value in the voltage charge relationship table includes at least one of a specific value and a percentage value. The open circuit voltage value and the remaining charge value of the voltage and power relationship table can be updated. For ease of understanding, the following is a description of the voltage and electricity relationship table when discharging at normal temperature (20 °C) and constant current (55OmA), as shown in Table 1. This (limited to space, this table only lists some correspondences [0034] Table 1 Normal temperature constant current discharge voltage and electricity relationship table open circuit voltage value (V) 4.20 4.06 3.98 3.92 3.87 3.82 3.79 3.77 3.74 3.68 3.45 Remaining electricity value 100% 90% 80% 70% 60% 50% 40% 30% 20% 10% 5% Percentage
[0036] 由表1可知,供電裝置20開電藶楂:隨剰餘電量值減少逐 〆 :.τ 漸降低,從而可根據供電裝置;20餘:路電壓值確定剩餘電 量值。 [0037] 顯示模組44可以是液晶顯示幕(Liquid Crystal Display , LCD) 或數位指示器 ,用於顯示供 電裝置20之剩 餘電量值及電池電量低之提示資訊。 [0038] (^^檢測模組41包括電壓測量單元411、電壓溫度補償單 原 元412和查詢單元413。 [0039] 電壓測量單元411可以是多元電壓表,用於測量供電裝置 095136401 表單編號 A0101 第 7 頁/共 20 頁 0993232635-0 1333289 _ 0"年〇6月3〇日俊正替换芦 20兩極電壓。 [0040] 電壓溫度補償單元412用於感測供電裝置20之溫度,並對 電壓測量單元411測得之電壓進行溫度補償。電壓溫度補 償單元412可以藉由熱敏電阻或電子溫度計感測供電裝置 2 0之溫度,並利用回饋溫度與電壓電量關係表中溫度差 值之變化規律,對測得之電壓值進行補償,該變化規律 為預先實驗測試所得。 [0041] 查詢單元41 3用於根據溫度補償後之電壓值查詢該電壓電 量關係表,以得到供電裝置20當前剩餘電量值Q#。 丨 [0042] ,處理模組42包括電流積算單元421、工作狀態檢測單 剩 元422、資料計算單元423和資料更新單元424。 [0043] 電流積算單元421可以採用電流積分器,積算供電裝置20 在一預定刷新週期(T)時間内之充/放電電流,以得到 刷新週期(T)内充/放電電量。其中,刷新週期(T)為 預設之積算刷新時間,每隔刷新週期(T)時間,電流積 算單元421積算一次電流。刷析週期(T)内充/放電電量 積算公式為: [0044] Q猜=J"。’(〇说 [0045] 其中,表示在刷新週期(T)内流過之電量值,I(t) 積 表示在刷新週期(T)内電流值變化函數。 095136401 表單編號A0101 第8頁/共20頁 0993232635-0 1333289 099年06月30日俊正替换頁 [0046] 工作狀態檢測單元422用於檢測供電裝置20之工作狀態, 即充電狀態還是用電狀態。由於供電裝置20充用電時電 流方向相反,可根據其電流方向判斷供電裝置20處於充 電或用電狀態。[0036] As can be seen from Table 1, the power supply device 20 is powered on: as the remaining power consumption value decreases by 〆: .τ gradually decreases, so that the remaining power value can be determined according to the power supply device; [0037] The display module 44 may be a liquid crystal display (LCD) or a digital indicator for displaying the remaining power value of the power supply device 20 and the prompt information of the battery power. [0038] The detection module 41 includes a voltage measurement unit 411, a voltage temperature compensation unit element 412, and an inquiry unit 413. [0039] The voltage measurement unit 411 may be a multi-element voltmeter for measuring the power supply device 095136401 Form No. A0101 Page 7 of 20 0993232635-0 1333289 _ 0" On June 3rd, the Japanese is replacing the two pole voltage of the Lu 20. [0040] The voltage temperature compensation unit 412 is used to sense the temperature of the power supply device 20 and measure the voltage The voltage measured by the unit 411 is temperature compensated. The voltage temperature compensation unit 412 can sense the temperature of the power supply device 20 by a thermistor or an electronic thermometer, and utilize the variation law of the temperature difference in the relationship between the feedback temperature and the voltage power. The measured voltage value is compensated, and the change rule is obtained by a preliminary experimental test. [0041] The query unit 41 3 is configured to query the voltage power relationship table according to the temperature compensated voltage value to obtain the current remaining power value of the power supply device 20. Q#. [0042] The processing module 42 includes a current integration unit 421, an operation state detection single residual element 422, a data calculation unit 423, and a data update list. 424. [0043] The current integration unit 421 may employ a current integrator to integrate the charge/discharge current of the power supply device 20 for a predetermined refresh period (T) to obtain a charge/discharge amount during the refresh period (T). The refresh cycle (T) is a preset integrated refresh time, and the current totalizer 421 accumulates a primary current every refresh cycle (T) time. The charge/discharge power accumulation formula of the refresh cycle (T) is: [0044] Q guess =J".'(〇[0045] where represents the value of the charge flowing in the refresh period (T), and the product of I(t) represents the change in the value of the current during the refresh period (T). 095136401 Form No. A0101 8 pages / total 20 pages 0993232635-0 1333289 June 30, 2017, the replacement of the page [0046] The working state detecting unit 422 is used to detect the operating state of the power supply device 20, that is, the charging state or the power state. When the current is in the opposite direction, the power supply device 20 can be judged to be in a charging or power state according to the current direction.
[0047] 資料計算單元423可以是一般之數位處理器或數位運算電 路,用於根據查詢單元413查詢得到之供電裝置20原剩餘 電量值,和電流積算單元421積算得到之刷新週期(T 原 )内流過之電量值(^,計算出供電裝置20當前剩餘電量[0047] The data calculation unit 423 may be a general digital processor or a digital operation circuit for querying the original remaining power value of the power supply device 20 according to the query unit 413, and the refresh cycle (T original) calculated by the current integration unit 421. The amount of electricity flowing through (^, the current remaining capacity of the power supply device 20 is calculated
[0048] [0049] [0050] 充電時,計算公式為 用電時,計算公式為 剩[0050] [0050] When charging, when the calculation formula is used, the calculation formula is left.
[0051] [0052][0052] [0052]
Q =Q -Q 乂剩乂原、 資料更新單元424用於根據渡補償單元412補償後 S 之電壓值,和資料計算單名42落#算所得之供電裝置20當 前剩餘電量值更新資料組^3中之該電壓電量關 剩 係表中之電壓值和剩餘電量值之間之對應關係。 [0053] 上述電量檢測系統4藉由資料存儲模組43存儲供電裝置20 電容量值及該電壓電量關係表。充電時,藉由資料更新 單元42更新該電壓電量關係表。用電時,藉由查詢單元 150查詢該電壓電量關係表,以確定電流積分之起始時刻 電量值Qs。 原 [0054] 電量檢測系統4藉由查詢電壓電量關係表來確定電流積分 095136401 表單編號A0101 第9頁/共20頁 0993232635-0 1333289 [0055] [0056] [0057] [0058] [0059] 095136401 099年06月30日俊正替換頁 起始時刻電量值’避免了由於供電裝置2()之内部阻抗而 產生之回路分壓,和供電裝置2G内部之自放電現象而引 起電里損耗而產生之檢測誤差。另外,藉由電壓溫度補 償單元412對測得之電壓進行溫度補償,防止了供電裝置 20工作時溫度變化而產生之電壓測量誤差❶藉由更新電 壓電量關係表中電壓值和剩餘電量值之間之對應關係, 防止了由於供電裝置2〇老化而引起之電壓值與剩餘電量 值之間關係改變而產生之檢測誤差,提高了電量檢測精 度。 請參閱圖2,電子設備5與充電裝置1〇相連。電子設備5包 括供電裝置2 0、内部負載3 i ^電量偵_ ^統5 〇。内部負 載31還包括用於將該充電裝董卟寒供之電能轉化成其他 形式能量之工作單元32和用於顯示該供電裝置剩餘電量 之顯不單元33,其中顯示單元33靠供電裝置20供電。 請結合圖1和圖3,圖3為基於電量檢測系統4之電量檢測 方法流程圖,其中電量檢測系統4中預設有電壓電量關係 表’該電量檢測方法包括如下步驟: 步驟102,首先,測量供電裝置2〇兩極開路電壓值得到剩 餘電量值U 。 原 步驟104,對電壓測量單元411測得之開路電壓值進行溫 度補償得到補償後之電壓值U 。 補 步驟106,根據電壓溫度補償單元412補償後之電壓值^ 查詢資料存儲模組43中該電壓電量關係表,以得到供電 裝置20原剩餘電量值q 。 原 表單編號A0101 第10頁/共20頁 0993232635-0 1333289 · , · [0060] 099年06月30日修正替換頁 步驟108,積算供電裝置20在刷新週期(T)内流過之電 流,以得到刷新週期(T)内流過之電量值Qu。 槓 [0061] 步驟110,檢測供電裝置20之工作狀態,該工作狀態包括 充電狀態和用電狀態。若為用電狀態時,執行步驟112 ; 若為充電狀態時,則執行步驟114。Q = Q - Q 乂 乂 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 The voltage in the 3 is the relationship between the voltage value and the remaining power value in the table. [0053] The power detecting system 4 stores the capacity value of the power supply device 20 and the voltage power relationship table by the data storage module 43. The charge voltage relationship table is updated by the data update unit 42 during charging. When the power is used, the voltage unit relationship table is queried by the query unit 150 to determine the starting time electric quantity value Qs of the current integral. Original [0054] The electric quantity detecting system 4 determines the current integral 095136401 by querying the voltage electric quantity relationship table. Form No. A0101 Page 9 / Total 20 pages 0993232635-0 1333289 [0056] [0059] [0059] 095136401 On June 30, 099, Junzheng replaced the page start time electric quantity value to avoid the circuit partial pressure generated by the internal impedance of the power supply device 2 () and the self-discharge phenomenon inside the power supply device 2G, resulting in electrical losses. Detection error. In addition, the voltage temperature compensation unit 412 performs temperature compensation on the measured voltage to prevent a voltage measurement error caused by the temperature change of the power supply device 20 when operating, and by updating the voltage value and the remaining power value in the voltage relationship table. The corresponding relationship prevents the detection error caused by the change of the relationship between the voltage value and the remaining power value caused by the aging of the power supply device 2, and improves the power detection accuracy. Referring to FIG. 2, the electronic device 5 is connected to the charging device 1A. The electronic device 5 includes a power supply device 20, an internal load 3i, and a power detector. The internal load 31 further includes a work unit 32 for converting the electrical energy of the charging device into other forms of energy and a display unit 33 for displaying the remaining power of the power supply device, wherein the display unit 33 is powered by the power supply device 20. Referring to FIG. 1 and FIG. 3, FIG. 3 is a flowchart of a method for detecting a power quantity based on the power detecting system 4, wherein the power detecting system 4 is pre-configured with a voltage and power relationship table. The power detecting method includes the following steps: Step 102: First, Measuring the power supply device 2 〇 two-pole open circuit voltage value to obtain the remaining power value U. In the original step 104, the open circuit voltage value measured by the voltage measuring unit 411 is temperature compensated to obtain the compensated voltage value U. Step 106: Query the voltage power relationship table in the data storage module 43 according to the voltage value compensated by the voltage temperature compensation unit 412 to obtain the original remaining power value q of the power supply device 20. Original Form No. A0101 Page 10 / Total 20 Pages 0993232635-0 1333289 · , [0060] On June 30, 099, the replacement page is replaced by step 108 to accumulate the current flowing through the refresh period (T) of the power supply device 20 to The electric quantity value Qu flowing in the refresh period (T) is obtained. Bar [0061] Step 110, detecting an operating state of the power supply device 20, the working state including a charging state and a power state. If it is in the power state, step 112 is performed; if it is in the charging state, step 114 is performed.
[0062] 步驟112,根據供電裝置20原剩餘電量Qs和刷新週期(T 原 )内流過之電量值Q ,藉由公式: 積 _ vv% [0064] 計算出供電裝置20當前剩餘電量值。完成步驟112後 、 刺 ,執行步驟122。 — J 今一一[0062] Step 112: Calculate the current remaining power value of the power supply device 20 according to the formula: product _vv% [0064] according to the original remaining electric quantity Qs of the power supply device 20 and the electric quantity value Q flowing in the refresh period (T original). After step 112 is completed, the step is performed, and step 122 is performed. — J Today one by one
[0065] 步驟114,根據供電裝置20原剩餘,量刷新週期(T 原- )内流過之電量值Q ,藉由公式: 槓 [_ WQ積 [0067] 計算出供電裝置2 0當前剩餘電量值(i &。 [0068] 步驟116,測量該供電裝置20在剩餘電量值,時,供電 剩 裝置20兩極開路電壓值得到。 [0069] 步驟118,對電壓測量單元411測得之開路電壓值U&進行 溫度補償得到Us。 更 [0070] 步驟120,根據電壓溫度補償單元412補償後之電壓值 更 和供電裝置20當前剩餘電量值更新該電壓電量關係表 [0071] 步驟122,顯示供電裝置20當前剩餘電量值Q&。 剩 095136401 表單編號 A0101 第 11 頁/共 20 頁 0993232635-0 1333289 099年06月30曰接正替换頁 [0072] 上述電量檢測方法,藉由查詢電壓電量關係表來確定電 流積分起始時刻電量值,避免了由於供電裝置20之内部 阻抗而產生之回路分壓,和供電裝置20内部之自放電現 象而引起電量損耗而產生之檢測誤差。另外,藉由電壓 溫度補償單元412對測得之電壓進行溫度補償,防止了供 電裝置20工作時溫度變化而產生之電壓測量誤差。藉由 更新電壓電量關係表中電壓值和剩餘電量值之間之對應 關係,防止了由於供電裝置20老化而引起之電壓值與剩 餘電量值之間關係改變而產生之檢測誤差,提高了電量 檢測精度。 ® [0073] 供電裝置剩餘電量即時檢測系統及方法可以應用於各種 有電池供電之電子產品中,如移動電話、PDA、筆記本電 腦等設備。 【圖式簡單說明】 [0074] 圖1為較佳實施方式之電量檢測系統方框圖。 [0075] 圖2為較佳實施方式使用電量檢測系統之電子設備方框圖 [0076] 圖3為較佳實施方式之電量檢測方法流程圖。 【主要元件符號說明】 [0077] 充電裝置:1 0 [0078] 電壓測量單元:41 1 [0079] 供電裝置:20 [0080] 電壓溫度補償單元:412 095136401 表單編號A0101 第12頁/共20頁 0993232635-0 [0081] [0081] 1333289 099年06月30日修正替換ΐΓ|[0065] Step 114: Calculate the current remaining capacity of the power supply device 2 by the formula: bar [_ WQ product [0067] according to the original remaining amount of the power supply device 20 and the quantity of the electric quantity Q flowing through the quantity refresh period (T original - ) The value (i & [0068] Step 116, when the power supply device 20 is measured, the two-pole open circuit voltage value of the power supply remaining device 20 is obtained. [0069] Step 118, the open circuit voltage measured by the voltage measuring unit 411 The value U& performs temperature compensation to obtain Us. [0070] Step 120, according to the voltage value compensated by the voltage temperature compensation unit 412 and the current remaining power value of the power supply device 20 to update the voltage power relationship table [0071] Step 122, display power supply Device 20 current remaining power value Q& 095136401 Form No. A0101 Page 11 of 20 0993232635-0 1333289 099 June 30曰Replacement page [0072] The above-mentioned power detection method, by querying the voltage and electricity relationship table The current value of the current integration start time is determined, and the voltage division due to the internal impedance of the power supply device 20 and the self-discharge phenomenon inside the power supply device 20 are avoided. In addition, the voltage temperature compensation unit 412 performs temperature compensation on the measured voltage to prevent voltage measurement errors caused by temperature changes during operation of the power supply device 20. By updating the voltage value in the voltage quantity relationship table and The corresponding relationship between the remaining power values prevents the detection error caused by the change of the relationship between the voltage value and the remaining power value caused by the aging of the power supply device 20, and improves the power detection accuracy. [0073] The remaining power of the power supply device is instantaneous The detection system and method can be applied to various battery-powered electronic products, such as mobile phones, PDAs, notebook computers, etc. [Schematic Description] [0074] FIG. 1 is a block diagram of a power detecting system of a preferred embodiment. 2 is a block diagram of an electronic device using a power detecting system according to a preferred embodiment. [0076] FIG. 3 is a flow chart of a method for detecting a power amount according to a preferred embodiment. [Description of Main Components] [0077] Charging device: 1 0 [0078] Voltage measuring unit: 41 1 [0079] Power supply unit: 20 [0080] Voltage temperature compensation unit: 412 095136401 Single No. A0101 Page 12 of 20 0993232635-0 [0081] [0081] 1333289 Correction Replacement ΐΓ on June 30, 099 |
[0082] [0083] [0084] [0085] [0086] [0087] [0088] [0089] [0090] [0091] [0092] [0093] [0094] [0095] [0096] [0097] [0098][0086] [0086] [0098] [0098] [0098] [0098] [0098] [0098] ]
負載:30 查詢單元:413 電量檢測系統:4 電流積算單元:421 Q κ檢測模組:41 原 工作狀態檢測單元:422 Q&處理模組:42 剩 資料計算單元:423 資料存儲模組:43 資料更新單元:424 顯示模組:4 4 剩餘電量值:431 電壓值與剩餘電量值對應關係ΐ32 V ,’ ; : ' "V: 内部負載:31 工作單元:32 電量偵測系統:50 顯示單元:33 電量檢測方法之步驟:102-122 095136401 表單編號A0101 第13頁/共20頁 0993232635-0Load: 30 Query unit: 413 Power detection system: 4 Current integration unit: 421 Q κ detection module: 41 Original working status detection unit: 422 Q& Processing module: 42 Remaining data calculation unit: 423 Data storage module: 43 Data update unit: 424 Display module: 4 4 Remaining power value: 431 Correspondence between voltage value and remaining power value ΐ32 V , ' ; : ' "V: Internal load: 31 Working unit: 32 Battery detection system: 50 display Unit: 33 Steps for the power detection method: 102-122 095136401 Form No. A0101 Page 13 of 20 0993232635-0
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TWI507705B (en) * | 2012-04-25 | 2015-11-11 | Kwang Yang Motor Co | Battery structure and its power measurement method |
TWI576596B (en) * | 2014-11-20 | 2017-04-01 | 力智電子股份有限公司 | Electric capacity measurement apparatus with temperature compensation and temperature compensation method thereof |
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US10942221B2 (en) | 2016-02-04 | 2021-03-09 | Mediatek Inc. | Method and apparatus capable of accurately estimating/determining power percentage of battery based on confidence levels determined from resultant information of multiple different fuel gauge operations and/or information of battery history, aging factor, sleep time, or battery temperature |
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TWI507705B (en) * | 2012-04-25 | 2015-11-11 | Kwang Yang Motor Co | Battery structure and its power measurement method |
TWI576596B (en) * | 2014-11-20 | 2017-04-01 | 力智電子股份有限公司 | Electric capacity measurement apparatus with temperature compensation and temperature compensation method thereof |
US9651626B2 (en) | 2014-11-20 | 2017-05-16 | Upi Semiconductor Corp. | Electric capacity measurement apparatus with temperature compensation and temperature compensation method thereof |
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