201225479 六、發明說明： ’ 【發明所屬之技術領域】 本發明是有關於-種電源管理電路，且特別是有關於一種 根據電池的電量選擇性對負載進行供電的電源管理電路 與電源管理方法。 【先前技術】 隨著石化石油能_日漸緊缺，人類對環境和節約能源的 思識不斷提高’電池的應用愈來愈廣泛。汽車、手機 攜式電子產品等’都會使賴電池1池的電源管理一直 都疋可攜式電子產品的重要發展技術之一。 在1電池並聯設計中，電池與電池間的相互充電一直是 (電池壽命的最大問題。縣電池並觀計可以有效增加產 ::命’但是由於每顆電池的内阻都不相同，造成放電能力 異，在電力無法相等的情況τ。將多個—次電池並聯時 現電池相互充電的問題，—次電池間的相互充電會縮短 一-人電池的壽命，衫發生好_ 設計也會有相關問題。 -人電池的 【發明内容】 端的=明提供—種電源管理電路、模組與方法，會比較負載 知的電壓與各個電池的電壓，讓且有 、 電並同時避免高電㈣電池對低電壓的電池充ζ電鋪負載充 ，電源本理魏無有其之電㈣理模組 路。第：電池ϋ第一電池、一第二電池與-電源管理電 第電池麵接於一第一電池輸出端；第二電池耦接於一第 4/19 201225479 二電池輪出端。電源管理電路至少包括一第—開關 關。第一開關耦接於第一電池輪出端與一負載端之門.第二開 關耦接於該第二電池輸出端與該負載端之間。輪出，，一開 接於該第一開關與該第二開關，根據該第一電池二=單元耦 與該負載端的電壓決定是否開啟該第一開關以及】根:的電壓 池輸出端的電壓與該負載端的電壓決定是否開啟兮 第二電 在本發明一實施例中，當該第-電池輪出㈣電 負载端的電壓時，該輸出控制單元導通該第一 ; ^ 网關；當該贫— 電池輪出端的電壓大於該負載端的電壓時，該 第一 通該第二開關。 〜出控制單元導 ，本發明一實施例中，其中上述第一電池輪出 一負載。其中第1池與第二電池為-Γ欠電載端耗接至 电/也或二次電池。 一在本發明-實施例中，其中控制單4括—第—電壓 早π、一第二電壓偵測單元與一控制單元。當一 ί接於第-電池輸出端與第二電池輸出端，用 接於負載端，用則貞測負載端的電壓。控制單元=== 元、二電壓_單元、第—開關與第二開關、。其中， :第-電池輸出端的電壓大於負载端的電壓時， 第一開關；當該二電池輸it!端的魏大 = 制單元導通第二開關。 的電£時’控 在本發明-實施例中，其中第—開關為—画⑽ ，上述NMOS電晶體的汲極耦接於電池於 日日祖 晶 體的源_接於負載端，·輸出控制單元包:出 二電阻，其t第-雜減於第—電轉出额匪〇5、電 5/19 201225479 體的=’第二電阻_於NM〇s電晶體的閘極與負載端。 辦發明另—實施例中，其中第—開關為一 PM0S電晶 ^ 〇s電晶體的源極耦接於電池輸出端，pM〇s電晶體的 沒極減於負載端。輸出控解元包括 咀，装Φ筮一命μ 电/、禾一電 體的 一 —W >f7 "^ 电 ItH. 一 晶 其中第-電_接於第—電池輸出端與pM〇s、電 問極：：二電阻輕接於脑電晶體的間極與負載端。 在本發明1_巾，其中上述輸出㈣單元包括 比較讀-第二比較器。第—比較器具耗接於第 端的-第-輸入端與搞接於負載端的一第 /輸^201225479 VI. Description of the Invention: </ RTI> The present invention relates to a power management circuit, and more particularly to a power management circuit and a power management method for selectively supplying power to a load according to a battery power. [Prior Art] With the growing shortage of petrochemical oil, human beings have become more aware of the environment and energy conservation. The use of batteries has become more widespread. Cars, mobile phones, portable electronic products, etc. will make Lai Battery 1 pool power management has always been one of the important development technologies of portable electronic products. In the parallel design of 1 battery, the mutual charging between the battery and the battery has always been (the biggest problem of battery life. The county battery and the observation can effectively increase the production:: life' but because the internal resistance of each battery is different, causing the discharge The ability is different, in the case that the power cannot be equal. τ. The problem that the batteries are mutually charged when the multiple-secondary batteries are connected in parallel, the mutual charging between the secondary batteries will shorten the life of the one-person battery, and the shirt will be good _ the design will also have Related issues - Human battery [invention content] End = Ming provides - a kind of power management circuit, module and method, will compare the voltage of the load and the voltage of each battery, so that there is electricity, while avoiding high electricity (four) battery For the low-voltage battery charging and charging, the power supply has no power (four) the module circuit. The battery: the first battery, the second battery and the power management battery are connected to one. a first battery output end; the second battery is coupled to a fourth battery terminal of the 4/19 201225479. The power management circuit includes at least a first switch. The first switch is coupled to the first battery wheel and the negative terminal. a second switch is coupled between the second battery output end and the load end. The wheel is turned on, and the first switch is connected to the first switch and the second switch according to the first battery The voltage with the load terminal determines whether the first switch is turned on and the voltage of the output terminal of the voltage pool and the voltage of the load terminal determines whether to turn on the second power. In an embodiment of the invention, when the first battery is discharged (4) When the voltage of the electric load terminal is turned on, the output control unit turns on the first; ^ gateway; when the voltage of the lean-battery wheel outlet is greater than the voltage of the load terminal, the first switch is the second switch. In an embodiment of the invention, the first battery wheel is loaded with a load, wherein the first battery and the second battery are - owed to the electric load end and are consumed to the electric / secondary battery or the secondary battery. Wherein the control unit 4 includes a first voltage π, a second voltage detecting unit and a control unit. When a λ is connected to the second battery output terminal and the second battery output terminal, the connection is applied to the load terminal. Then measure the voltage at the load end. Control unit === Yuan, two voltage_unit, the first switch and the second switch, wherein: when the voltage of the output of the first battery is greater than the voltage of the load end, the first switch; when the two batteries are connected to the end of the Wei? = unit is turned on In the present invention, the first switch is a picture (10), and the drain of the NMOS transistor is coupled to the source of the battery in the day-to-day crystal. · Output control unit package: the second resistance, its t-sub-subtraction from the first-electrical output 匪〇5, electricity 5/19 201225479 body = 'second resistance _ the gate of the NM 〇s transistor In the embodiment, the first switch is a PM0S transistor, and the source of the transistor is coupled to the output end of the battery, and the pM〇s transistor is reduced to the load end. The output control element includes a nozzle, and a Φ 筮 命 μ 电 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 、 s, electric question pole:: The second resistance is lightly connected to the interpole and load end of the brain electrical crystal. In the invention, the above output (four) unit comprises a comparison read-second comparator. The first-comparison device is connected to the first-input terminal of the first end and the first/negative terminal connected to the load end.
器的-輸出端耦接於第一開關。第二比較器具:姐第- _ 池輸出端與-第—輸人端與祕於負載:於第二1 二比較器的-輸出端麵接於該第二開關/第—輸入端，S 從另一個角度來看’本發明另提出1電辭 控制多個電池是否對一負載進行供雷， 去，適用方 的供電路徑連接至一負澈踹 鱼、δΛ二電池分別經由個另: 料k连接至負載此負栽端可 法包括下列步驟：偵測該貞載端的電壓與池 ，以及根據該負載所連接的該負載端的電壓The output of the device is coupled to the first switch. The second comparison device: the sister - _ pool output and - the first input and the secret load: the second output of the comparator - the output end is connected to the second switch / the first input, S from From another point of view, the present invention further proposes to control whether a plurality of batteries supply a load to a load, and the power supply path of the applicable side is connected to a negative squid and a δ Λ two batteries respectively. Connecting to the load can include the steps of: detecting the voltage and the pool of the load, and the voltage of the load connected according to the load
電壓，分別決定是否導通該些電池與 的電知 ;其中，當該些電池中之-第一電池的雷:^間的供電财 的電壓時，導通對應於該第一電池的供電路 大於該負載却a voltage, respectively determining whether to turn on the battery and the electrical knowledge; wherein, when the voltage of the first battery of the first battery is the voltage of the power supply between the batteries, the supply circuit corresponding to the first battery is larger than the voltage Load
综合上述，本發明所提出的電源管理 管理方法’電源管理電路會制電㈣壓與=與其電淡 後選擇具有較高電池的電池對貞載供電。、々電壓’ % 載端的電壓會被拉低，電源f理電路會開啟=大’其I 供電。同時，電源管理電路藉由選擇 ^ 、電池對負I 電池相互充電關題。θ 、极開關，可以避力 6/19 201225479 為讓本發明之上述特徵和優點能更 佳實施例，並配合所_式，作詳細說明如下/特舉較 【實施方式】 (第一實施例） 圖1為根據本發明第一實施例的電 源管理模組_包括電源管 技，、且不忍圖。電 出、第二_、第:電_^^ 布一电池136與第四電池〗π、。平、広# 『電路UH減於第—至第四電池132〜 根據第-至第四電池輸出端；=之間， 性的導通篦一 S笙8B 14〃、貝戰铫T5的電壓，選擇 m $至第四開關122〜128，讓第-至第四雷冰 132〜138對負載14〇供電。 主弟四電池 關1=1理G1包括輸出控制單元11()與第—至第四開 } ^ ’八輸出控制單元110尚包括第-電壓偵測單元 ，控制單元114與第二電壓娜元⑽。^^ τΤ ΓΜ122M28 M，J ^ ^ - f 之Η灿… 第四電池132〜138與負載⑽ “二_於第一電壓價測單元112、第二電壓 “、早，、第-至第四開關122〜128,用來控制第第 :，〜128的導通與否。第-電嶋單元二^ 至第四電池輸出端T1〜T4則貞測第一至第四電:二 丁1〜Τ4的電壓VI〜V4，第-雪颅庙、目，丨留-，， 钓出而 以偵測負載端Τ5的電壓V；· J早几_接負載端丁5 a 5 7/19 201225479 、、也轸第四電池132〜138分別耦接於第-至第四電 … 〜T4，_所以第_至第四電池輪出端 T1〜T4的電壓 來表示第一至第四電池132〜138的電池電壓。同 楚、带端T5的電壓V5可用來表示負載140的電壓。第一 132〜138的電池電壓會依照電池電量而改變，而負 140所雲：ΐ則會隨負載140所需的電量(或電流)而變。負载 隨著供電電’會使得負載端Τ5的電壓愈低。當然， _電電。池的下降’負載端Τ5的電壓也會下降。 vs二Γ單元114會分別比較所偵測到的電壓V1〜V4與電壓 雷壓主至第四電池132〜138的電池電壓大於負載端T5的 122〜128 t雷，Γ早元114會導通對應的第-至第四開關 122 128 ’讓電餘高的電池對負 需的電暈較高時，其負 ^田負載140所 元⑴便會導通更5會被拉低，控制單 反之，當負載14〇所旦f更多的電池對負載140供電。 開關數:目便會減少低時，控制單元114所導通的 H舉例來說，假如第一 3.3V，3.2V，3.1V^ ,ν 電壓V5為^nsv。u_ ，、v，而負載端T5的 與第二開關124。I ^ =制單幻14會導通第—開關122 开ml 負載端T5的電愿V5為3撕時中制單 兀114會導通第一開關122、第二開關124與第 亲早 依此類推。當負載i 4 〇所需 、，—開關12 6， 時，控制單元U4會隨著負載端電的電池電力不足 電的電池數量。4者負載、T5的電壓變化增加或減少供 電子的疋’上述電源管理模組1GG可以應用於可攜式 裝置中，但本發明並不限制於此。當可攜式 關機的狀態下時，第-至第四開關132:13=子= 8/19 201225479 至第四電池132〜138*會相互充電。當可攜式電子裝置開機時 ，電源官理模組100可以先導通第一至第四開關132〜138其中 之一，例如第一開關132，讓第一至第四電池132〜138其中之 一對負載140供電。然後，比較負載端T5的電壓V5與其他 電池的電池電壓以導通相對應的開關，使具有較高電壓的電池 對負載140供電。由於控制單^ m是依照電池電壓斑電乘 V5來選擇供電的電池’因此下—個被選㈣的電池的電池電 壓會與目前正在供電的電池的電池電壓相近。因此，用來供電 的電池並不會因為開關的導通而有嚴重的相互充電的問題產 生。而電量較低(電池電壓較低)的電池則會在負載端T5的電 壓W下降到其電池電壓之下時才會被選擇到。在經由上述實 施例之朗後，本技術職具有通f知識者應可推知其實施方 式’在此不加累述。 在本貫施例中，上述第一至第四電池132〜138可為一次 電池或二次電池，本發明並不受限。第一至第四開關m〜⑽ 種開關元件實現，例如電晶體、M〇s電晶體或 =、=4°電源官理電路1G1中雖然依照功能區分為第庚 控制單元114與第二電㈣測單元116，“In summary, the power management management method of the present invention, the power management circuit, generates power (four) voltage and = and its battery is selected to have a higher battery. 々 Voltage '% The voltage at the carrier will be pulled low, and the power supply circuit will turn on = large 'its I supply. At the same time, the power management circuit charges each other by selecting ^, the battery and the negative I battery. θ, pole switch, avoidable force 6/19 201225479 In order to make the above-mentioned features and advantages of the present invention better, and in conjunction with the formula, the following is a detailed description of the following [embodiment] (first embodiment) 1 is a power management module according to a first embodiment of the present invention, including a power management technique, and is not tolerant. Electric output, second _, first: electric _ ^ ^ cloth one battery 136 and fourth battery 〖π,. Ping, 広# 『Circuit UH minus the first-to-fourth battery 132~ According to the first to fourth battery output; ???, between the sexual conduction 笙S笙8B 14〃, the bell 铫 T5 voltage, select m $ to the fourth switch 122 to 128, allowing the first to fourth thunder ices 132 to 138 to supply power to the load 14 。. The master four battery off 1=1, the G1 includes the output control unit 11() and the first to the fourth open} ^ 'the eight output control unit 110 further includes a first voltage detecting unit, the control unit 114 and the second voltage nano element (10). ^^ τΤ ΓΜ122M28 M,J ^ ^ - f ...... The fourth battery 132~138 and the load (10) "two_first voltage measuring unit 112, second voltage", early, first to fourth switch 122~128, used to control the conduction of the first:, ~128. The first-to-fourth battery output terminal T1 to T4 is to measure the first to fourth electric power: the voltage of the di-butyl 1~Τ4 VI~V4, the first-snow skull temple, the eye, the detention-,, the fishing In order to detect the voltage V of the load terminal ;5; · J early _ connected to the load end □ 5 a 5 7/19 201225479, and also the fourth battery 132~138 are respectively coupled to the first to the fourth power... T4, _ so the voltages of the first to fourth battery wheel terminals T1 to T4 indicate the battery voltages of the first to fourth batteries 132 to 138. Similarly, the voltage V5 of the terminal T5 can be used to indicate the voltage of the load 140. The battery voltage of the first 132~138 will change according to the battery power, while the negative 140 cloud: ΐ will vary with the amount of power (or current) required by the load 140. The load will cause the voltage at the load terminal Τ5 to be lower as the power supply is turned on. Of course, _ electric power. The drop in the tank 'the voltage at the load terminal Τ 5 will also drop. The vs second unit 114 compares the detected voltages V1 VV4 and the voltage of the voltage thunder main to the fourth battery 132 to 138, respectively, which is greater than 122 to 128 t of the load terminal T5, and the early element 114 is turned on. The first to the fourth switch 122 128 'When the battery with high power reserve is high, the negative corona is required. The negative load of the load of 140 yuan (1) will be turned on and the other 5 will be pulled down, and the control will be reversed. A battery with a load of more than 14 volts supplies power to the load 140. Number of switches: H is reduced when the control unit 114 is turned on. For example, if the first 3.3V, 3.2V, 3.1V^, ν voltage V5 is ^nsv. U_, v, and the load terminal T5 and the second switch 124. I ^ = system phantom 14 will be turned on - switch 122 open ml load terminal T5's wish V5 is 3 tears in the middle of the single 兀 114 will turn on the first switch 122, the second switch 124 and the first relative and so on. When the load i 4 〇 required, - switch 12 6, the control unit U4 will be less than the battery power of the battery at the load end. The load of the four, the voltage change of T5 increases or decreases the 供 of the electron supply. The above power management module 1GG can be applied to the portable device, but the present invention is not limited thereto. When the portable is turned off, the first to fourth switches 132: 13 = sub = 8/19 201225479 to the fourth batteries 132 to 138 * are charged to each other. When the portable electronic device is powered on, the power management module 100 may first turn on one of the first to fourth switches 132 to 138, for example, the first switch 132, and let one of the first to fourth batteries 132 to 138 Power is supplied to the load 140. Then, the voltage V5 of the load terminal T5 is compared with the battery voltage of the other battery to turn on the corresponding switch, so that the battery having the higher voltage supplies the load 140. Since the control unit m is selected to supply the battery according to the battery voltage spot multiplied by V5, the battery voltage of the next selected battery is similar to the battery voltage of the battery currently being powered. Therefore, the battery used for power supply does not cause serious mutual charging problems due to the conduction of the switch. A battery with a lower charge (lower battery voltage) will be selected when the voltage W of the load terminal T5 drops below its battery voltage. After passing through the above-described embodiments, those skilled in the art should have inferred that their implementations are not described herein. In the present embodiment, the first to fourth batteries 132 to 138 may be primary batteries or secondary batteries, and the present invention is not limited. The first to fourth switches m to (10) kinds of switching elements are realized, for example, a transistor, an M 〇s transistor, or a =, 4° power supply circuit 1G1, although the function is divided into a ghth control unit 114 and a second power (four) Measurement unit 116, "
Hi所古""种，可以使用單—或少數的元件或電路架構來 G二2功能1舉例來說，電源f理電路1G1可以利用比 -λ現，凊參照圖！與圖2，圖2為根 貧施例的電源管理模組的電路示意圖。 第 輸出控料元11()可利用比較器21()〜24()實現，而第— 輸入端耦:於swi〜sw4實現。比較器210的正 接於負餘^ 端T1以接收錢v] ’負輸入端轉 、而以接收電壓V5。比較器210的輸出端耦接於開 9/19 201225479 關SW1。比較器210用以比較電壓VI與電壓V5以控制開關 SW1。當電壓V5大於電壓VI時，比較器210會輸出高電位 以導通開關SW1，藉此導通第一電池132與負載端T5之間的 供電路徑。第一電池130經由導通的開關SW1便可對負載140 供電。同理，比較器220〜240的正輸入端分別耦接於第二至第 四電池輪出端T2〜T4以接收電壓V2〜V4，負輸入端則耦接於 負載端T5以接收電壓V5，輸出端則分別耦接於開關 SW2〜SW4。比較器210〜240可以分別比較第一至第四電池 132〜138的電壓與電壓V5以分別控制開關SW1〜SW4的 導通與否。 值得注意的是，在圖2中，開關SW2〜SW4是以高電壓作 為導通電壓’但本發明並不限制於此。開關SW2〜SW4也可以 用負電壓(或者零電壓位準作為導通電壓，只是比較器21〇〜24〇 的正、負輸入端所耦接的電壓需要調換以產生負電壓或零電壓 位準。在經由上述實施例之說明後，本技術領域具有通常知識 者應可推知其實施方式，在此不加累述。 (第二實施例） 睛參照圖1與圖3，圖3為根據本發明第二實施例的電源 官，模組的電路示意圖。在本發明第二實施例中，上述輸出控 制單元110可以利用兩兩串聯的電阻R1〜R8實現，而第一至 第四開關122〜128以PM0S電晶體P1〜p4實現。pM〇s電晶 體P1〜P4的源極分職接於第—至第四電池輸出端τι〜τ4， PMOS電晶體Ρ1〜ρ4的汲極耦接於負载14〇。電阻則、R2串 聯麵接於負載端T5與第-電池輸出端T1之間，其共用接點 耗接於PMOS電晶體P1的閘極；電阻R3、似串聯·於負 载端T5與第二電池輸出端T2之間，其共用接點麵接於pM〇s 10/19 201225479 電晶體P2的閘極；電阻R5、R6串聯耦接於負載端T5與第三 電池輸出端Τ3之間，其共用接點耦接於PM〇s電晶體ρ3的 閘極；電阻R7、R8串聯耦接於負載端Τ5與第四電池輸出端 T4之間’其共用接點耦接於pm〇S電晶體P4的閘極。 以電阻R1、R2與PMOS電晶體P1為例說明，當第一電 池132的電池電壓（第一電池輸出端τι的電壓vi)大於負載端 丁5的電壓時，由於分壓的關係，PM〇s電晶體ρι的閘極會產 生低於電壓VI的電壓位準。只要PMOS電晶體pi的源-閘極 • 電壓超過門檻電壓(thresh〇ld voltage)時，PMOS電晶體P1便 會導通，使得第一電池132可以對負載14〇供電。其他的電路 (電阻R3〜R8與PMOS電晶體P2〜P4)的作動原理相似，在經由 士述實施例之說明後，本技術領域具有通常知識者應可推知其 實施方式，在此不加累述。 (第三實施例） 一請參照圖1與圖4’圖4為根據本發明第三實施例的電源 官理模組的電路示意圖。在本發明第二實施例中，上述電源管 Φ理電路101可以利用兩兩串聯的電阻R1〜R8實現，而第一至 第四開關122〜128以NMOS電晶體N1〜N4實現。圖4與3主 要差異在於NMOS電晶體N1〜N4,由於NM0S電晶體N1〜N4 是利用正的閘_源極電壓驅動。所以，NM〇s電晶體Νι〜Ν4的 源極分肋接於貞載端T5，^其秘齡肋接於第一至第 四電池輸出端Τ1〜Τ4，其閘極分別耗接電阻R】〜R8的共用接 點:舉例來說，當電壓V1大於錢π且其差值大於NM〇s 7晶體N1的門檻電壓時，NM〇s電晶體⑴更會因其問極電 、、上升而導通。藉此，對應已導通的電晶體Ni的第一 電池132便可對負載140供電。其他的NMOS電晶體N2-N4 11/19 201225479 與其對應的第二電池134〜138的作動原理相似。在經由上述實 施例之說明後，本技術領域具有通常知識者應可推知其實施方 式’在此不加累述。 值得注意的是，上述第一至第三實施例雖然是以四組電池 為例說明，但本發明並不限制於此。利用相似的電路架構，上 述電源管理模組與電源管理電路也可以應用於2組、3組或多 組的電池管理上面。以圖丨為例，若電池管理模組中僅具有第 一電池122與第二電池124，則不需要設置第三開關126與第 四開關128。。以圖2為例，若電池管理模組中僅具有第一電 池132與第二電池134，則不需要設置比較器23〇、與開 關SW3、SW4。在經由上述實施例之說_，本技術領域具有 通常知識者應可推知其他實施方式，在此不加累述。 (第四實施例） 經由上述實施例，本發明可歸納出第一種電源管理方法， 請同時參關1與圖5，圖5為根據本發明第四實施的電源管 理方法流程圖。如上述實施例，此·f理方 個電池是否對-負載進行供電，該些電池分別經由個別 路徑連接至-負載端，該負載_接於該負载。首先 載端的電壓與各該電池的電池電壓(步驟S51〇)，然後 端的電壓與各該電池的電池電壓(步驟S52〇)。接下來貞 的電池電壓大於負載端時’導通對應的供電路V(即 圖中=122〜128)，使對應的電池對負載端進行供電 電本 的電池來進行供電。本發明之電二= /、、、即，本技術領域具有通常知識者應可由上述第一至第三 12/19 201225479 實施例的說明中推知，在此不加累述。 —在上述實施例中，由於電池的供電是與其電池電麼有關， 母次開啟的電池，其電壓會與目前供電的電池相近，因此可以 降低電池互相充電的問題。另外，藉由第一至第四開關122〜128 當!ΐΐ未？時也不會有相互充電的問題。上述實施例中的 電池可為一次電池或二次電池。 值得注意的是，上述元件之間的麵接關係包括直接 σ、要可料顺㈣電錢傳遞功能即可 並:y艮。上述實施例中的技術手段可以合併或單獨 凡可依照其功能與設計需求增加、去除、調整或替 換’本發明並不受限。為由 杂 衿且右、ϋ 在丄由上述^轭例之說明後，本技術領 I有;^知識者應可推知其實施方式，在此不加累述。 、，’τ、上所述本發明會根據負載的電壓與 較向電池電壓的電池來對負載供電，藉 並且避免電池相互充電的問題。 H也Μ並聯使用 本么月之較佳貫施例已揭露如上，然 實施例’任何所屬技術領域中具有通常知識者 發明ί = ’當可作些許之更動與調整，因此本 '、4粑圍應§以後附之申請專利範圍所界定者為準。 13/19 201225479 【圖式簡單說明】 圖1為根據本發明第一實施例的電源管理模組示意圖。 圖2為根據本發明第—實施例的電源管理模組^電 思圖。 圖3為根據本發明第二實施例的電源管理模組的電路 意圖。 μ 圖4為根據本發明第三實施例的電源管理模組的電路八 意圖。 ’' 圖5為根據本發明第四實施的電源管理方法流程圖。Hi's ancient "" kind, can use single- or a few components or circuit architecture to G 2 2 function 1 For example, the power supply circuit 1G1 can use the ratio - λ, 凊 reference picture! FIG. 2 and FIG. 2 are circuit diagrams of a power management module of the root lean embodiment. The first output control element 11() can be implemented by the comparators 21() to 24(), and the first input terminal is coupled to: swi~sw4. The comparator 210 is connected to the negative terminal T1 to receive the money v] 'the negative input terminal to receive the voltage V5. The output of the comparator 210 is coupled to the open 9/19 201225479 switch SW1. The comparator 210 is for comparing the voltage VI with the voltage V5 to control the switch SW1. When the voltage V5 is greater than the voltage VI, the comparator 210 outputs a high potential to turn on the switch SW1, thereby turning on the power supply path between the first battery 132 and the load terminal T5. The first battery 130 can supply power to the load 140 via the turned-on switch SW1. Similarly, the positive input terminals of the comparators 220 to 240 are respectively coupled to the second to fourth battery wheel terminals T2 to T4 to receive the voltages V2 V V4, and the negative input terminal is coupled to the load terminal T5 to receive the voltage V5. The output ends are respectively coupled to the switches SW2 SWSW4. The comparators 210 to 240 can compare the voltages of the first to fourth batteries 132 to 138 and the voltage V5, respectively, to control whether the switches SW1 to SW4 are turned on or not. It is to be noted that, in Fig. 2, the switches SW2 to SW4 have a high voltage as the on-voltage ', but the present invention is not limited thereto. The switches SW2 to SW4 can also use a negative voltage (or a zero voltage level as the turn-on voltage, except that the voltages coupled to the positive and negative inputs of the comparators 21 〇 24 24 需要 need to be switched to generate a negative voltage or zero voltage level. After the description of the above embodiments, those skilled in the art should be able to infer the implementation thereof, which will not be described here. (Second Embodiment) The eye is referred to FIG. 1 and FIG. 3, and FIG. 3 is in accordance with the present invention. In the second embodiment of the present invention, the output control unit 110 can be implemented by using two or two series resistors R1 R R8, and the first to fourth switches 122 to 128. The P0〇s transistors P1 to P4 are respectively connected to the first to fourth battery output terminals τι to τ4, and the PMOS transistors Ρ1 to ρ4 are coupled to the load 14电阻. Resistor, R2 series connection between the load terminal T5 and the first battery output terminal T1, the common contact is consumed by the gate of the PMOS transistor P1; the resistor R3, like the series connection at the load terminal T5 and Between the two battery output terminals T2, the common contact surface is connected to pM〇s 10 /19 201225479 The gate of the transistor P2; the resistors R5 and R6 are coupled in series between the load terminal T5 and the third battery output terminal Τ3, and the common contact is coupled to the gate of the PM〇s transistor ρ3; the resistor R7 The R8 is coupled in series between the load terminal Τ5 and the fourth battery output terminal T4. The common contact is coupled to the gate of the pm〇S transistor P4. The resistors R1 and R2 and the PMOS transistor P1 are taken as an example. When the battery voltage of the first battery 132 (the voltage vi of the first battery output terminal τι) is greater than the voltage of the load terminal D, the gate of the PM〇s transistor ρι generates a voltage lower than the voltage VI due to the voltage division relationship. The voltage level is as long as the source-gate voltage of the PMOS transistor pi exceeds the threshold voltage (thresh〇ld voltage), the PMOS transistor P1 is turned on, so that the first battery 132 can supply power to the load 14 。. The operation principle of the resistors R3 to R8 and the PMOS transistors P2 to P4 is similar. After the description of the embodiment of the present invention, those skilled in the art should be able to infer the implementation thereof, and will not be described here. Third Embodiment) Please refer to FIG. 1 and FIG. 4'. FIG. 4 is a diagram according to the present invention. The circuit diagram of the power supply module of the embodiment. In the second embodiment of the present invention, the power tube Φ circuit 101 can be realized by using two resistors R1 R R8 in series, and the first to fourth switches 122 to 128 The NMOS transistors N1 to N4 are realized. The main difference between FIG. 4 and FIG. 3 is that the NMOS transistors N1 to N4 are driven by the positive gate-source voltage because the NM0S transistors N1 to N4 are used. Therefore, the NM〇s transistor is Νι~ The source of the crucible 4 is connected to the crucible end T5, and the secret rib is connected to the first to fourth battery output terminals Τ1 to Τ4, and the gates respectively consume the common contacts of the resistors R]~R8: for example It is said that when the voltage V1 is greater than the money π and the difference is greater than the threshold voltage of the NM〇s 7 crystal N1, the NM〇s transistor (1) is further turned on due to its polarity and rise. Thereby, the first battery 132 corresponding to the turned-on transistor Ni can supply power to the load 140. The other NMOS transistors N2-N4 11/19 201225479 are similar in operation to their corresponding second cells 134 to 138. After the description of the above embodiments, those skilled in the art should be able to deduce that the embodiments thereof are not described herein. It is to be noted that although the above first to third embodiments are explained by taking four battery packs as an example, the present invention is not limited thereto. With the similar circuit architecture, the above power management module and power management circuit can also be applied to battery management of 2 groups, 3 groups or groups. For example, if the battery management module has only the first battery 122 and the second battery 124, the third switch 126 and the fourth switch 128 need not be provided. . Taking FIG. 2 as an example, if only the first battery 132 and the second battery 134 are included in the battery management module, it is not necessary to provide the comparator 23A and the switches SW3 and SW4. In the above-described embodiments, those skilled in the art should be able to infer other embodiments, which are not described herein. (Fourth Embodiment) Through the above embodiments, the present invention can be summarized into a first power management method, which is also referred to at the same time as FIG. 5 and FIG. 5, which is a flowchart of a power management method according to a fourth embodiment of the present invention. As in the above embodiment, whether or not the battery supplies power to the load, the batteries are respectively connected to the load terminal via an individual path, and the load is connected to the load. First, the voltage of the carrier and the battery voltage of each of the batteries (step S51 〇), and then the voltage of the terminal and the battery voltage of each of the batteries (step S52 〇). Next, when the battery voltage of 贞 is greater than the load terminal, the corresponding supply circuit V (ie, 122 to 128 in the figure) is turned on, so that the corresponding battery supplies power to the load terminal to supply power. The invention of the present invention is inferred from the description of the first to third embodiments of the above-mentioned first to third 12/19 201225479, and is not described herein. - In the above embodiment, since the power supply of the battery is related to the battery power thereof, the voltage of the mother-supplied battery is similar to that of the currently powered battery, so that the problem of mutual charging of the batteries can be reduced. In addition, by the first to fourth switches 122 to 128 when! There will be no problem of charging each other. The battery in the above embodiment may be a primary battery or a secondary battery. It is worth noting that the face-to-face relationship between the above components includes direct σ, which can be used to (4) the money transfer function: y艮. The technical means in the above embodiments may be combined or separately added, removed, adjusted or replaced in accordance with their functions and design requirements. The present invention is not limited. After the description of the above yoke example is given by the ambiguity and the right ϋ , , , ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ 。 。 。 。 。 The present invention, as described above, supplies power to the load according to the voltage of the load and the battery to the battery voltage, and avoids the problem of the batteries being charged to each other. H is also used in parallel. The preferred embodiment of this month has been disclosed as above. However, the embodiment of any of the technical fields of the prior art is invented ί = 'When a little change and adjustment can be made, therefore, ', ' This shall be subject to the definition of the scope of the patent application attached to the §. 13/19 201225479 BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a power management module according to a first embodiment of the present invention. 2 is a diagram of a power management module according to a first embodiment of the present invention. Figure 3 is a circuit diagram of a power management module in accordance with a second embodiment of the present invention. Fig. 4 is a circuit diagram of a power management module according to a third embodiment of the present invention. Figure 5 is a flow chart of a power management method in accordance with a fourth embodiment of the present invention.
【主要元件符號說明】 1UU 101 110 112 114 116 Τ5 :負載端 VI〜V5 :電壓 210〜240 :比較器 SW1〜SW4 :開關 R1〜R8 :電阻 Ρ1〜Ρ4 : PMOS電晶體 Ν1〜Ν4 : NMOS電晶體 S510〜S530 :步驟 電源管理模組 電源管理電路 輸出控制單元 第一電壓偵測單元 控制單元 第二電壓偵測單元 122〜128 ·第一至第四開關[Main component symbol description] 1UU 101 110 112 114 116 Τ5: Load terminal VI~V5: Voltage 210~240: Comparator SW1~SW4: Switch R1~R8: Resistor Ρ1~Ρ4: PMOS transistor Ν1~Ν4: NMOS Crystal S510~S530: Step power management module power management circuit output control unit first voltage detecting unit control unit second voltage detecting unit 122~128 · first to fourth switches
132〜138 :第一至第四電池 140 :負載 Τ1〜Τ4·第一至第四電池輸出端 14/19132~138: first to fourth batteries 140: load Τ1~Τ4·first to fourth battery output terminals 14/19