TWI362802B - Battery protector with compensated internal impedance - Google Patents

Battery protector with compensated internal impedance Download PDF

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TWI362802B
TWI362802B TW97109728A TW97109728A TWI362802B TW I362802 B TWI362802 B TW I362802B TW 97109728 A TW97109728 A TW 97109728A TW 97109728 A TW97109728 A TW 97109728A TW I362802 B TWI362802 B TW I362802B
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battery
circuit
voltage
protector
negative
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TW97109728A
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TW200941885A (en
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Chang Yu Ho
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Neotec Semiconductor Ltd
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13628.02 九、發明說明: 年月日修正#換貝 -- 【發明所屬之技術領域】 本發明是錢於—種電池倾ϋ,_是有關於— 種具有電池内阻補償之電池保護器,以達到節省充電所需 時間及提供使用者更多電池使用時間。 【先前技術】 電池可說是-切可攜式電子裝置動力來源,舉凡 獻触_谢物,皆有賴 二Ϊ Α電池只是—種f積電量㈣置,可攜 ^以使㈣’電池電力就會持魏絲直至财搞式電^ =被_或者剩餘的電能不足以驅動該裝置時,可攜式電 =置就會被強迫_。後者所表示意義是儲存於電池内^ 電力低於-臨界值。—般而言,不管以環保考量,或者以 時間總平均成本思考,可攜式電子裝置多會採取電池再 的方式,將原來耗損的電能補充回來。 A -f池管理程歧好的電池通常可被重覆充電數百 -人’甚至達數件次。 、/市面上最流行的可充電電池要算是Ni_H電池與鋰電 ’也、。後者儲存之電力較大’且充電時僅有很少的記憶效應。 電池被充電或放電時通常會以電池保護器或電池管理系統 控制以防止電池被過度充電或放電或過電流之發生以延長 ,池的使用壽命’過充的偵測是當偵測到電池電壓高於第— ,界電壓Vdetl時’而過放的偵測是當偵測到電池電壓低於 弟一臨界電壓Vdet2時。 a 請參考圖1 a與圖1b所示之習知電池保護器1〇内 部電路的功能方塊圖,圖1a中的過充比較器5〇和過放比 6 f預設第-臨綱V-, 匕較器的參考電壓。電流由接腳Vd〇流入由 。〇 R1和R2的分壓電阻器至接腳V岛而以 上的跨f做輕池之端賴是硕充,或過放輸據。。 明參考目k所示的一電池正透過充電器20及-電池 二盗10的控制而對電池進行充電^此時,電池保護器⑺ CO接腳外接一電晶體FET2且持續保持開啟直到電 ,保護器10偵測到電池電壓Vce„被充電達到或超過預設臨 ^電麗值vdetl才會義。在赠況τ,Vee"約略等於或超 i Vdetl。另一方面若電池對負載放電,則外接於電池保護 益w的Γ D0接腳的電晶體FET1也會持績開啟,直到電 池保護器1G翻或低於—預誠界電壓u會關閉。 ^不過’被畺度到的電池電壓Vm未必能真實反映電池 的電壓Vbat。主要的原因是電池常具有一内電阻Rbat。該内 電阻所反映的電壓值和充電的電流或放電電流有關,一如下 列方程式所表示:13628.02 IX. Description of invention: Year, month and day correction #换贝-- [Technical field of invention] The present invention is a kind of battery dumping, _ is related to a battery protector with battery internal resistance compensation, Reducing the time required to save the charge and providing users with more battery life. [Prior Art] The battery can be said to be the power source of the portable electronic device. Anyone who wants to touch the _ thank you is dependent on the battery. The battery is only a type of power (four), can be carried to make (four) 'battery power When Wiss is held until the money is _ or the remaining power is not enough to drive the device, the portable power = will be forced _. The meaning of the latter is stored in the battery ^ power below - critical value. In general, whether considering environmental considerations or thinking about the total average cost of time, portable electronic devices will take the battery again and replenish the original depleted energy. B-cells with good A-f pool management can usually be recharged hundreds of times - even a few times. The most popular rechargeable battery on the market is Ni_H battery and lithium battery. The latter stores a large amount of power and has little memory effect when charging. When the battery is charged or discharged, it is usually controlled by a battery protector or battery management system to prevent the battery from being overcharged or discharged or overcurrent is generated to prolong the life of the pool. The overcharge detection is when the battery voltage is detected. Above the first, the boundary voltage Vdetl' and the over-discharge detection is when the battery voltage is detected to be lower than the threshold voltage Vdet2. a Please refer to the functional block diagram of the internal circuit of the conventional battery protector 1图 shown in Fig. 1a and Fig. 1b. The overcharge comparator 5〇 and the over-discharge ratio 6f in Fig. 1a are preset to the first-side V- , the reference voltage of the comparator. The current flows from the pin Vd〇. 〇 The voltage divider resistors of R1 and R2 are connected to the V island and the upper side of the light cell is the supercharged or over-discharged data. . A battery as shown in reference k is charged by the control of the charger 20 and the battery thief 10. At this time, the battery protector (7) is externally connected to a transistor FET2 and remains turned on until it is powered. The protector 10 detects that the battery voltage Vce is charged or exceeds the preset voltage value vdetl. In the gift condition τ, Vee" is approximately equal to or exceeds the Vdetl. On the other hand, if the battery discharges the load, The transistor FET1 connected to the D0 pin of the battery protection device w will also be turned on until the battery protector 1G turns or falls below - the pre-confidence voltage u will be turned off. ^But the battery voltage is turned to Vm does not necessarily reflect the voltage Vbat of the battery. The main reason is that the battery often has an internal resistance Rbat. The voltage value reflected by the internal resistance is related to the charged current or discharge current, as expressed by the following equation:

Vcell = Vbat+Ii*Rbat 典型的電池内電阻Rbat值約有100mn之多。如此當 充電的電流I】是1A時,則當電池電壓vbat實際值是41v, 所量到的電壓Vcell卻是4.2V。另一方面若是發生於放電的 日守候,所量到的電池電壓VceU則是4.〇v,因為此時電流l 是-1A。 因此,一如前述,電池保護器10若不把電池内阻的 因素列入關閉FET2及/或FET1的參數之一而以固定的預 設臨界電壓Vdetl或Vdet2為充電或放電的臨界點就會 有電池充電不足(因過早關閉FET2)或者放電過頭(過晚 關閉FET1)的問題’,上述的問題有必要加以修正。因此, 電池保護器10為延長電池壽命,充電時會分兩階段19〇、 1362802 οηΛ 士姑一 Μ t月日修正替换用Vcell = Vbat + Ii * Rbat Typical battery internal resistance Rbat value is about 100mn. Thus, when the charging current I] is 1A, when the battery voltage vbat actual value is 41v, the measured voltage Vcell is 4.2V. On the other hand, if it occurs on the day of discharge, the measured battery voltage VceU is 4.〇v, because the current l is -1A. Therefore, as described above, if the battery protector 10 does not include the factor of the internal resistance of the battery in one of the parameters of turning off the FET 2 and/or the FET 1, and the fixed threshold voltage Vdetl or Vdet2 is the critical point of charging or discharging. There is a problem with insufficient battery charging (because FET2 is turned off prematurely) or over-discharge (turning off FET1 too late), and the above problems need to be corrected. Therefore, the battery protector 10 is used to extend the battery life. When charging, it will be divided into two stages: 19〇, 1362802 οηΛ 姑 一 Μ

,在弟一匕投時以逐漸降低的電流進行 L~^--8-- 〇 s_I %不足。而放電時’職前關FET卜 I ’以免充 止茂電過頭。 有馨於此,本發明之一目的是設計 補償的電池保護1c電路’以達到具有(1):二=, 命,並且(2)更省充電時間的效果。 、電池的哥 【發明内容】 本發明提供一具電池内電阻補償 供電池充放電之控制。在第—實施例中H &器以提 $輯和延遲電路模組、一過充比較器上以= 一 正輸入端與負輪入端信號之依據該 電晶if 错以關閉或開啟充電路徑之 產ίϊηί—參考信號由第一可變電墨產生電路所 連接之Ϊ曰體丄電壓產生電路依據電池内阻與接腳VM ί ίϋϊ,而將電池充電臨界電_整輸出,而 電臨界有相同之几件與連接關係,但提供提供放 ㈣哭f =實施财電池保護器與該第-實施例中電池 元件但只用第-可變電壓產生電路,ίί 器之ίί 制錢作為過充峨11與過放比較 哭保護器内另有電壓準位移位電路、溫度偵測 -構W貞測H、充電之過電流比較器、及放電之過 8 丄叫8〇2 電流比較如賴it-步健電池之目%。 曰Π蝴| 【實施方式】 如先前所述,電池保護器10所量得之電 Vcel卜實際上因有電池内阻的關係而使得量得的值 際值約有100 mV的差值,以放電或充電電流 二 池断充料有轉考慮内_ 電池保護器可以藉由VM接腳來量取電流。 接腳上的電壓= ·Ι,(充電電流)* R_ (FET1與 的内阻)。FET1與FET2的峨值典型值為25 FETi _阻與FET2的内阻加起來為5〇⑽。因此’ # 如電池的内阻是100 ηιΩ時則利用量得之v 下= 關係式獲得電池的實際電壓Vbat: —下列At the time of the brother's throw, the L~^--8-- s s_I % is insufficient. At the time of discharge, the FET I I's off before the job is taken to avoid overheating. In view of this, one of the objects of the present invention is to design a compensated battery protection 1c circuit' to achieve the effects of (1): two =, and (2) more time-consuming charging time. [Brief of the Invention] The present invention provides a battery internal resistance compensation for battery charge and discharge control. In the first embodiment, the H & device and the delay circuit module, and an overcharge comparator are used to turn off or turn on the charging according to the signal of the positive input terminal and the negative wheel input terminal. Path production ϊ ί ί ί ί ί ί ί ί — 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 参考 ί 参考 参考 ί ί ί ί ί ί ί ί ί ί ί ί ί ί There are several pieces of the same connection relationship, but provided to provide (four) crying f = implementation of the battery protector with the battery component of the first embodiment but only with the first variable voltage generating circuit, ίί ίί 制Filling 11 and over-discharging compare the crying protector with another voltage quasi-displacement circuit, temperature detection - structure W test H, charge over current comparator, and discharge over 8 丄 8 〇 2 current comparison Lai it - step by step battery. [Embodiment] As described above, the electric Vcel measured by the battery protector 10 actually has a difference value of about 100 mV due to the relationship of the internal resistance of the battery. The discharge or charge current of the two cells is turned into consideration. The battery protector can measure the current by the VM pin. The voltage on the pin = · Ι, (charging current) * R_ (the internal resistance of FET1 and ). The 峨 values of FET1 and FET2 are typically 25 FETi _ and the internal resistance of FET2 is 5 〇 (10). Therefore, if the internal resistance of the battery is 100 ηιΩ, the actual voltage of the battery is obtained by using the quantity v = = relation:

Vbat - vcel, - 0.1*1, = Vcelr2* (〇.〇5*ij) = yce]i + 2*Vvm. 以通用公式描述時:Vbat - vcel, - 0.1*1, = Vcelr2* (〇.〇5*ij) = yce]i + 2*Vvm. When describing in a general formula:

Vbat = vce„ + k*VVM。其中k=電池内阻和FET1盘 内阻和之比值。 Μ 圖2a、2b示依據本發明先前所述智慧型電池 補償能力電池保護器100内部的功能方塊示意圖。其中 2a的電池之内阻補償以二個可調變電壓產生電路 170來完成,而® 2b &電池之内阻補償以一個可調 壓產生電路Π0來完成。圖2a和圖⑪的方塊示意圖妓同 包含:邏輯電路及延遲電路模組105,電壓位準移位電路 108、溫度偵測器11〇、短路電流偵測器12〇、充電之過電 流比較器130、放電之過電流比較器14〇、過充比較器 150、過放比較器⑸’及一分壓電路165 (或二分壓 165 、 175)。 9Vbat = vce„ + k*VVM, where k=the ratio of the internal resistance of the battery to the internal resistance of the FET1. Μ Figures 2a, 2b show the functional block diagram of the internal battery protector 100 of the smart battery compensation capacity according to the present invention. The internal resistance compensation of the battery of 2a is completed by two adjustable voltage generating circuits 170, and the internal resistance compensation of the ® 2b & battery is completed by an adjustable voltage generating circuit Π 0. The blocks of Fig. 2a and Fig. 11 The schematic diagram includes: logic circuit and delay circuit module 105, voltage level shift circuit 108, temperature detector 11 〇, short circuit current detector 12 〇, charging over current comparator 130, discharge over current comparison The device 14A, the overcharge comparator 150, the overdischarge comparator (5)' and a voltage divider circuit 165 (or two divided voltages 165, 175).

上述短路電流偵測器120、溫度偵測器110、充 電流比較器130、放電之過電流比較器14〇、過充比 =态150、及過放比較器155之輸出端都連接於邏輯電路 5丨路模組1〇5以對上述比較器的輸入訊號是否達 »又電壓值做出適當回應。例如,短路電流偵測器 ,測巧短路電流發生時’邏輯電路及延遲電路模組105 f會停止電池的輸出。放電之過電流比較器140偵測到放 =之過,流發生時,邏輯電路及延遲電路模組1〇5在超 、一預定延遲時間,以過濾雜訊後就會使D〇接腳拉低, 以關閉FET1。充電之過電流比較器13()彳貞_彳充電之過 ,流發生時,邏輯電路及延遲電路模組105在超出一預 定延遲時間以過濾雜訊後就會將CO接腳電位拉低,以關 、。另—方面,當過充事件發生時’過充比較器150會 使^輯電路及延遲電路模組105關閉FET2。過放事件發 生日守’過放比較器155會使邏輯電路及延遲電路模組1〇5 關閉 FET1。 、、 〇〇 圖2a中,可調變電壓產生電路170提供過充比較 态15〇的負端一輸入參考訊號Vdetla。可調變電壓產生電 路16〇提供自過放比較器155的正端一輸入參考訊號 Vdet2f。。過充比較器150的輸入訊號由正輸入端輸入。過放 比車又益155的的輸入訊號由負輸入端輸入。上述兩者 150、155的輸入訊號取自第一分壓電路165的R2電阻器 上的跨壓。第一分壓電路165是由電阻器R1及R2所組 成串聯於保護器1〇0接腳VDD與接腳vss之間。該兩 接腳與電池之兩電極直接相連,請參考圖!。 當輸入訊號(R2電阻器上的跨壓)大於過充比較器 已之參考電壓Vdetla時,一正的電壓訊號就會自過充比 較益150輸出給邏輯電路及延遲電路模組105以產生另 一訊號以關閉外接的FET2。當輸入訊號(R2電阻器上的 1362802The short-circuit current detector 120, the temperature detector 110, the charge current comparator 130, the discharge overcurrent comparator 14A, the overcharge ratio = state 150, and the output of the over-discharge comparator 155 are all connected to the logic circuit. The 5 circuit module 1〇5 responds appropriately to whether the input signal of the above comparator reaches the voltage value. For example, when the short-circuit current detector detects that the short-circuit current occurs, the logic circuit and the delay circuit module 105 f stop the output of the battery. The over-current comparator 140 of the discharge detects that the discharge is over. When the flow occurs, the logic circuit and the delay circuit module 1〇5 are over a predetermined delay time to filter the noise and then pull the D-pin. Low to turn off FET1. After the charging overcurrent comparator 13()彳贞_彳 is charged, when the stream occurs, the logic circuit and the delay circuit module 105 will lower the potential of the CO pin after filtering the noise after exceeding a predetermined delay time. Take off, . On the other hand, when the overcharge event occurs, the overcharge comparator 150 causes the circuit and delay circuit module 105 to turn off the FET 2. The over-discharge event is issued by the birthday guard 'over-discharge comparator 155, which causes the logic circuit and delay circuit block 1〇5 to turn off FET1. In Fig. 2a, the variable voltage generating circuit 170 provides a negative terminal-input reference signal Vdetla of the overcharge comparator 15〇. The variable voltage generating circuit 16 is supplied from the positive terminal of the overdischarge comparator 155 to an input reference signal Vdet2f. . The input signal of the overcharge comparator 150 is input by the positive input terminal. Over-discharge The input signal of the vehicle 155 is input from the negative input. The input signals of the above two 150, 155 are taken from the voltage across the R2 resistor of the first voltage dividing circuit 165. The first voltage dividing circuit 165 is formed by a resistor R1 and R2 connected in series between the protector 1〇0 pin VDD and the pin vss. The two pins are directly connected to the two electrodes of the battery, please refer to the figure! . When the input signal (the voltage across the R2 resistor) is greater than the reference voltage Vdetla of the overcharge comparator, a positive voltage signal is output from the overcharge comparator 150 to the logic circuit and the delay circuit module 105 to generate another A signal to turn off the external FET2. When inputting signal (1362802 on R2 resistor)

年月曰修正替換負I ^壓於過放比較器155之參考電壓Vdet2a時,另正& 〇上^ 電壓巧號就會由過放比較器155輸出給邏輯電路及延遲 %路模組105以產生再一訊號以關閉外接的feti。 上述的可調變電壓產生電路170請參考圖3a 算山放大器0P17〇以一回授電阻R8連接於輸出: 二負輸入端之間。負輸入端的輸入訊號取自VM接腳電 壓VVM輕一電阻器R7再饋入負輸入端。正輸入端的輸入 訊號取自預定之臨界電壓Vdeti經電阻器R6再輸入於正 輸入^。正輸入端另連接有一電阻器R5至接地端。在此, 電阻器R5、R6、r7、、R8的阻值選驗據上述之κ值而 調整,並且相對於OP170輸入阻抗而言極小。運算放大 器OP170的輸出端就可產生一隨彻接腳的電壓^之 參考電壓Vdetla。正輸入端的輸入電壓值=When the year 曰 correction replaces the negative I ^ voltage with the reference voltage Vdet2a of the over-discharge comparator 155, the other positive & ^ ^ voltage code is output from the over-discharge comparator 155 to the logic circuit and the delay %-way module 105. To generate another signal to turn off the external feti. The adjustable voltage generating circuit 170 described above is referred to FIG. 3a. The amplifier amplifier 0P17 is connected to the output by a feedback resistor R8: between the two negative inputs. The input signal of the negative input is taken from the VM pin voltage VVM light one resistor R7 and then fed into the negative input terminal. The input signal at the positive input is taken from the predetermined threshold voltage Vdeti and then input to the positive input via resistor R6. A resistor R5 is connected to the ground at the positive input terminal. Here, the resistance values of the resistors R5, R6, r7, and R8 are adjusted according to the above-mentioned κ value, and are extremely small with respect to the input impedance of the OP170. The output terminal of the operational amplifier OP170 can generate a reference voltage Vdetla of the voltage of the pin. Input voltage value at the positive input =

VdetI*Rf(R5+R6)。當上述之K值=2為例’四支電阻器的 可取相等的R。便可達職生隨電朗晴化的參考電壓 V det】a。 乂 工地的1綢變電壓產生電路16〇請參考圖北 =電路圖’運算放大器Op廳包含一回授電阻财連接於 入端之間。負輸入端的輸入訊號取自观 ,腳电屋vVM經一電阻器R7再饋入負輸入端,一如前 述。正輸入端的輸入訊號取自預定之臨界電壓V孩 阻器R6再輪入於正輸入端。正輸入端 一 哭 接地端。運算放大器0P⑽的輸出端就可ί-i =接腳的電壓變化之參考電屢Vdet2a。在此,電阻器R5、 、R7、R8的選用—如前述’依據上述之κ值而選用。 倾、實關’請參考® 2b。基於電池被過 广放錄並未會同時發生,因此只要兩組分壓電路被 鱼用電阻器’就可以使得分別用於可以改變過放比 二态5的分壓電路Π1的參考電壓Vdetla與相 1 °例如’在本實施例中參考電壓都是用相同的可調變電 1362802 叫止賴頁/ 壓產生電路170 ’即Vdetla。過充比較器15〇的預設臨界 電慶Vdet丨以單一鐘電池芯(one battery one cdl)約爲4 2v,麸 而過放比較II⑸的預設臨界· ^辑―鐘電池ς (one battery one cell)約為2·4ν而已’兩者之間有一明顯差 值。不過,我們可以藉由第二分壓電路175加以調整, 以一實施例而言,例如,當Vdetla為丨2V時,我們可以 選擇 R卜 R2、R3、R4 分別為 2.5ΜΩ、1ΜΩ、’1ΜΩ、及 1ΜΩ以達到只使用-只可調變電壓產生電路⑺之目的。 依據本發明之智慧型電池保護器1〇〇,在一 電方式(cc-cy模式),它可以使充電更快速。請比較圖 a、圖4b的不意圖。圖4a示以充電時 =電池電壓·時_係如曲線觸,此時為cc模式(或f 電至接近於預設臨界電壓vdet,例如m ”,,p t後就將電流逐漸調小(對應的電池電漫 献,捕献輕 =’點p’後就將電流調小(對;的電池 =f〇1),因補償電路作用使得_ Jit : 電“p 後。因此’很_地’本發明的智载型 ;二=定_電日_長而較忒 vdet〇 ^ v- > 本發明的智慧型電池保護器⑽m車又圖。 護器-控制時電池以定電“放電= 放的電= 12 1362802 時間關係曲線別。電池龍Vcen在放 日 之臨界電麼vdet2時就會被中止放電。狹,’ 、又 電池内阻的關係,它事實上尚可以# : t上,由於 對地’請參考圖5b依據本發明的===、段時間。相 控制時,以相同的放電電浐J电池保護器⑴0 曲線。電池電壓vcell在放電H H電,時間關係 時並不會健巾止放電,而=&之臨界電壓 可以再放電一小段時間t2。圖5 ζ1丨=v_a,即 在一起時之比較。傳統之^也保 圖北曲線放VdetI*Rf (R5+R6). When the above K value = 2 is taken as an example, the four resistors may have an equivalent R. It can reach the reference voltage V det] a. 1 1 silk voltage generation circuit of the construction site 16 〇 Refer to the diagram of the north = circuit diagram 'Operational amp Op Hall contains a feedback resistor connected between the input terminals. The input signal of the negative input terminal is taken from the view, and the footwell vVM is fed into the negative input terminal via a resistor R7, as described above. The input signal at the positive input is taken from the predetermined threshold voltage V and the R6 is re-entered at the positive input. The positive input is a crying ground. The output of op amp 0P (10) can be ί-i = the reference voltage of the pin voltage change Vdet2a. Here, the selection of resistors R5, R7, R8 - as previously described - is selected based on the above-described k value. Pour and turn off please refer to ® 2b. Since the battery is over-recorded, it does not happen at the same time, so as long as the two-component voltage circuit is used by the fish resistor, it can be used for the reference voltage of the voltage dividing circuit Π1 which can change the over-discharge ratio of the two states. Vdetla and phase 1 °, for example, 'in this embodiment, the reference voltage is the same adjustable voltage 1362802 called the page/voltage generating circuit 170', ie Vdetla. Overcharge comparator 15 〇 preset threshold electric Vdet 丨 with a single battery cell (one battery one cdl) is about 4 2v, bran and over discharge comparison II (5) preset threshold · ^ series - clock battery ς (one battery One cell) is about 2·4 ν and there is a significant difference between the two. However, we can adjust by the second voltage dividing circuit 175. In one embodiment, for example, when Vdetla is 丨2V, we can select R, R2, R3, and R4 to be 2.5ΜΩ, 1ΜΩ, respectively. 1 Μ Ω, and 1 Μ Ω to achieve the purpose of using only the adjustable voltage generating circuit (7). According to the smart battery protector of the present invention, in an electrical mode (cc-cy mode), it can make charging faster. Please compare the intent of Figure a and Figure 4b. Figure 4a shows that when charging = battery voltage · time _ is like a curve touch, this time is cc mode (or f is close to the preset threshold voltage vdet, for example, m ”, after pt, the current is gradually reduced (corresponding The battery is distributed, the light is saved = 'point p', then the current is turned down (pair; battery = f〇1), due to the compensation circuit effect _ Jit: electric "p after. So 'very _ ground' The intelligent load type of the present invention; two = fixed _ electric day _ long and relatively 忒 vdet 〇 ^ v- > The smart battery protector (10) of the present invention is also shown in Fig. protector - control battery when the power is fixed "discharge = Put the electricity = 12 1362802 time relationship curve. Battery Dragon Vcen will be suspended when the critical power of the day is vdet2. Narrow, ', and the internal resistance of the battery, it can actually be #: t, Please refer to Figure 5b for the ===, segment time according to the invention. When the phase is controlled, the same discharge voltage is used for the battery protector (1) 0 curve. The battery voltage vcell is not discharged when the HH is charged. The health towel stops discharging, and the threshold voltage of =& can be discharged for a short period of time t2. Figure 5 ζ1丨=v_a, which is the ratio of the time Compared with the traditional ^ also protect the map north curve

Td ’本發明電池保_總放電時間時間若設為 器具有有電池内電阻補償之智慧型電池保護 ⑴充電時’相同的充電條件技 電阻補償之智慧型電池保護具有電池内 (2)放電時,本發明 ‘ 的時間。 電池保護器可以使電池内電阻補償之智慧型 壽命。 双糾間更長’而不致於傷害電池 本發明精神與如上’然其並非用以限定 ,發明之在不 申請專利範圍内。 7作之修改’均應包含在下述 13 月ο日修正替換買 【圖式簡單說明】 藉由以下詳細之描述結合所收 述内容及此項發明之諸多優點^中圖式,將可輕易明瞭上 電阻I 知技細^計之電絲護11,不具有内Td 'The battery protection of the present invention _ total discharge time is set to have a smart battery protection with battery internal resistance compensation (1) when charging the same charging condition, technical resistance compensation, smart battery protection with battery inside (2) discharge The time of the invention's. The battery protector can compensate for the smart life of the internal resistance of the battery. The invention is not limited to the above, and the invention is not intended to be within the scope of the patent application. 7 Modifications shall be included in the following March ο. Correction Replacement Buy [Simplified Description] The following detailed description, combined with the content of the description and the advantages of the invention, can be easily understood. The upper resistance I knows the fine wire of the wire protector 11, does not have the inner

電阻補償功能之内部電路功能方塊圖。 W 器,^古不依據習知技術另一實施例所設計之電池保護 ,/、有内電_償功能之内部電路功能方塊圖。 圖le示電灿充電正在充電時與典型之電池保護器 各接腳的連接關係圖。 w圖2a示依據本發明之第一實施例所設計之電池保護 益具有内電阻補償魏之内部電路功能方塊圖。 ^圖2b不依據本發明之第二實施例所設計之電池保護 器具有内電關償魏之⑽電路魏方塊圖。 圖3a不依據本發明之第一可調變㈣瓜她⑹電壓產生 電路圖。 圖3b示依據本發明之第二可調變(adjustable)電壓產生 電路圖。 圖4a示對電池進行充電時,經傳統電池保護器控制 下’電池電壓和時間關係圖及充電電流和時間關係圖。傳 統電池保護器而對電池進行充電時 圖4b示對電池進行充電時,經本發明電池保護器控制 下,電池電壓和時間關係圖及充電電流和時間關係圖。 14 1362802 稍電_行賴時,_缺本㈣ 電池電壓和時間關係圖及充電電流和時間關係 圖暨合在一起以比較差異的示意圖。 圖5a示對電池進行放電時,經本發明電池保護器控制 下,電池電壓和時間關係圖及充電電流和時間關係圖二 圖5b對電池進行放電時,經本發明電池保護器控制 下,電池電壓和時間關係圖及充電電流和時間關係@圖1。 圖5c示對電池進行放電時’經傳統及本發明電池保護 裔控制下’電池電壓和時間關係圖及充電電流和時間關係 圖疊合在一起以比較差異的示意圖。 【主要元件符號說明】 10、100電池保護器 --- 105邏輯電路及延遲電路模組 108電壓準位移位電路 110溫度偵測器 ~~~^ 120短路電流偵測器 130充電之過電流比較器 140放電之過電流比較器 160、170可調變電壓產生電路 50、150過充比較器 165第一分壓電路 55、155過放比較器 175第二分壓電路 20充電器 190、191第一階段充電曲線 200、201第二階段充電曲線 ---- 15Block diagram of the internal circuit function of the resistor compensation function. The device is not designed according to another embodiment of the prior art, and the internal circuit function block diagram has an internal power compensation function. Figure le shows the connection diagram of the battery protector when it is charging and the connection of the typical battery protector. Fig. 2a shows a block diagram of the internal circuit function of the battery protection with internal resistance compensation according to the first embodiment of the present invention. Figure 2b is a block diagram of a battery protector that is not designed in accordance with the second embodiment of the present invention. Fig. 3a is a circuit diagram showing the voltage generation of the first (4) melon (6) according to the present invention. Figure 3b is a diagram showing a second adjustable voltage generating circuit in accordance with the present invention. Fig. 4a is a diagram showing the relationship between the battery voltage and time and the charging current and time under the control of the conventional battery protector when charging the battery. When the battery is charged by the conventional battery protector Fig. 4b is a diagram showing the relationship between the battery voltage and time, the charging current and the time when the battery is charged, controlled by the battery protector of the present invention. 14 1362802 A little power _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ FIG. 5a is a diagram showing the relationship between the voltage and time of the battery and the charging current and time under the control of the battery protector of the present invention when discharging the battery. FIG. 5b shows the battery voltage under the control of the battery protector of the present invention when discharging the battery. Time diagram and charging current and time relationship @图1. Fig. 5c is a schematic diagram showing the relationship between the battery voltage and time and the charging current and time relationship of the conventional and inventive battery protection devices when the battery is discharged. [Main component symbol description] 10,100 battery protector--- 105 logic circuit and delay circuit module 108 voltage quasi-displacement circuit 110 temperature detector ~~~^ 120 short circuit current detector 130 charging over current Comparator 140 discharge overcurrent comparator 160, 170 adjustable voltage generating circuit 50, 150 overcharge comparator 165 first voltage dividing circuit 55, 155 over discharge comparator 175 second voltage dividing circuit 20 charger 190 191 first stage charging curve 200, 201 second stage charging curve ---- 15

Claims (1)

1362802 ' fco月8曰縣皆换頁 十、申請專利範圍: 1. -具電池内電阻補償之電池保護器 =2器;=與接地接_與-電;ΐ 一邏輯電路和延遲電路模組; 過充比較态,具有一正輸入端盘一 負^入端連^於-第-參考信號,該正輪人端 之C t測信號饋入,該過充比較器依據該正輸又端愈# ^ VDD與接J:也接腳VSS之| 〜刀[笔路連接於該接腳 正輸入端ίίί!口考有二3 放大器之負端經第—偏壓電阻連接於対 ^ I塵接=VM ’正端經第二偏㈣阻連接於二第一預設臨界 生,該變電職生電路所產 ί,一第二纖 償之電池保護器, 值和該第-_衫二卿内電阻 16 1362802 年月 mr-s. 日修正替換買j ok-」 3 -具電池魄聞償之電池保護器 保護器之接腳VDD與接地接腳vss愈—m,,之電池 接,至少包含: /、冤池之正、負電極端連 一邏輯電路和延遲電路模組; 輸入:入端,該負 ii 號’該過?_依據該Ζίί’ΐ2: 電路i組,^以號給該邏輯電路和i遲 該第之;rr其中 接_接腳VDD與該接地接腳vss ^間該弟一为堡電路連 輸入端與—負輸人端,該正 之第二偵,妒,兮;亥負輸入端由該電池提供 端伸> μ^ #ϋ _放轉該正輸人端與負輸入 電路;}^έ且^ *輸出第一輸出信號給該邏輯電路和延遲 ίΪί二=關閉嫌放電路徑之-第二開關3 二^由第二分壓_產生,該第二分壓電路亦 連”雜=VDD與該接地接腳vss之間;及i電路亦 生,信號由第一可變電壓產生電路所產 生;路包含一第一運算放大器,該 哭之—二;負知經第一偏屢電阻連接於該電池保護 ΐΐ壓 端經第二偏M取且連接於—第一預設臨 申細第4項之具電池内電關償之電池保護器, i和該第L— pd電阻與第二偏壓電阻是依據電池内電阻 碭關及第一開關内阻和之比值而選擇電阻器。 17 1362802 七、指定代表圖: ’)本案指定代表圖為:第(2a)圖 月日修正替換頁 ——之开.林)吃號簡單說明 100電池保護器-^---- 1〇8 ^壓準位移位雷路 105邏輯電路及延遲電路模組 110溫度偵測器 120短路電流偵測器 140放電之過電流比較器 150過充比較器 '---^. 155過放比較器 130充電之過電流比較器 ^____ 160、170可調變電懕產4雷腺 165第一分壓電路 八 、本案若有化學辆,請揭綠麟科啤徵的化學式: 51362802 'fco month 8 counties are all page 10, the scope of application for patents: 1. - battery protector with battery internal resistance compensation = 2; = connected to ground _ and - electricity; ΐ a logic circuit and delay circuit module Overcharged comparison state, having a positive input terminal, a negative input terminal, and a - reference signal, the C t measurement signal of the positive wheel terminal is fed, and the overcharge comparator is based on the positive and negative ends More # ^ VDD and J: Also pin VSS | ~ Knife [When the pen is connected to the positive input of the pin ίίί! The mouth test has two 3 amplifiers with the negative terminal connected to the 対^ I dust via the first bias resistor Connect = VM 'the positive end is connected to the second first criticality by the second partial (four) resistance, the voltage-generated occupational circuit produces ί, a second-fibre battery protector, the value and the first-shirt II卿内电阻16 1362802月月 mr-s. 日修正换换换j ok-" 3 - Battery ambulance battery protector protector pin VDD and ground pin vss more - m, battery connection, At least: /, the positive and negative electrodes of the Dianchi are connected to a logic circuit and a delay circuit module; Input: the input end, the negative ii number 'The over? _ According to the Ζ Ίίίΐ2: Circuit i group, ^ is given to the logic circuit and i is late; rr is connected between _ pin VDD and the ground pin vss ^, the brother is connected to the input circuit and the negative input The human side, the positive second detect, 妒, 兮; Hai negative input terminal provided by the battery extension gt; μ^ #ϋ _ release the positive input terminal and negative input circuit; } ^ έ and ^ * output An output signal is applied to the logic circuit and the delay is 关闭 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = Between vss; and i circuit, the signal is generated by the first variable voltage generating circuit; the circuit includes a first operational amplifier, the crying - two; negative knowledge is connected to the battery protection via the first bias resistor The pressure terminal is taken by the second bias M and is connected to the battery protector with the internal charge of the battery in the first preset application, and the first L-pd resistor and the second bias resistor are based on Select the resistor by the ratio of the internal resistance of the battery and the internal resistance of the first switch. 17 1362802 VII. Designation of the representative figure: ') The picture is: (2a) Figure Day Correction Replacement Page - Open. Lin) Eat a simple description 100 battery protector -^---- 1〇8 ^Pressure displacement position Leilu 105 logic circuit and Delay circuit module 110 temperature detector 120 short circuit current detector 140 discharge over current comparator 150 overcharge comparator '---^. 155 over-discharge comparator 130 charging over current comparator ^____ 160,170 Adjustable substation production 4 Lei gland 165 first voltage divider circuit 8. If there is a chemical vehicle in this case, please uncover the chemical formula of Green Linke beer: 5
TW97109728A 2008-03-19 2008-03-19 Battery protector with compensated internal impedance TWI362802B (en)

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Publication number Priority date Publication date Assignee Title
TWI497856B (en) * 2013-05-15 2015-08-21 Himax Tech Ltd Over temperature protection circuit and method thereof

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CN103532106B (en) * 2013-11-04 2016-05-25 武汉大学 A kind of single-lithium-battery pond protection chip with accurate delay and sleep mode
CN106300279B (en) * 2015-05-12 2018-09-18 高达能源科技股份有限公司 Circuit is protected for the forced charge after secondary cell overdischarge
CN109391010A (en) * 2018-11-30 2019-02-26 深圳源创智能照明有限公司 A kind of lithium battery high temperature automatic protection plate
CN111463847B (en) * 2020-03-09 2022-05-13 深圳市创芯微微电子有限公司 Battery protection chip and battery protection board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI497856B (en) * 2013-05-15 2015-08-21 Himax Tech Ltd Over temperature protection circuit and method thereof

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