TW201505325A - DC uninterruptible power supply system and device - Google Patents
DC uninterruptible power supply system and device Download PDFInfo
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Abstract
Description
本發明是有關於一種不斷電系統及裝置，特別是指一種針對直流電源的直流不斷電系統及裝置。 The invention relates to an uninterruptible power system and device, in particular to a DC uninterruptible power system and device for a DC power supply.
參見圖1所示，習知一種不斷電裝置1具有一將三相交流電源300轉成單相交流電源的電壓分配器11，一將電壓分配器11輸出的單相交流電源轉成一直流電的電源供應單元13，其輸出直流電供給伺服器200，同時輸出直流電至一充電電路31，使將直流電轉成電池33的額定電壓並對電池33充電。電池33還與一變壓模組35電耦接，且一開關37電耦接在電池33與一伺服器200之間並受電源供應單元13控制。當交流電源300停止輸出電力時，電源供應單元13控制開關37導接變壓模組35與伺服器200，使電池33輸出電力並經由變壓模組35轉成伺服器200所需的直流電，再經由開關37供給伺服器200，藉此達到不斷電的目的。 Referring to FIG. 1, a conventional uninterruptible power device 1 has a voltage distributor 11 for converting a three-phase AC power source 300 into a single-phase AC power source, and converting a single-phase AC power output from the voltage distributor 11 into a DC power supply. The power supply unit 13 supplies DC power to the servo 200, and simultaneously outputs DC power to a charging circuit 31 to convert the DC power to the rated voltage of the battery 33 and charge the battery 33. The battery 33 is also electrically coupled to a transformer module 35, and a switch 37 is electrically coupled between the battery 33 and a server 200 and controlled by the power supply unit 13. When the AC power supply 300 stops outputting power, the power supply unit 13 controls the switch 37 to conduct the transformer module 35 and the server 200, so that the battery 33 outputs power and is converted into the DC power required by the server 200 via the transformer module 35. The server 200 is then supplied via the switch 37, thereby achieving the purpose of continuous power.
但習知不斷電裝置1只能供單一負載使用，且不能與相鄰的不斷電裝置連結，而無法適時提供電力給使 用相鄰的不斷電裝置的負載。此外，習知不斷電裝置1的變壓模組35大多採用電路複雜且體積較大的交換(切換)式直流-直流轉換器，使得不斷電裝置1的整體體積無法縮減，而不適於應用在訴求輕薄短小的電子產品中。 However, the conventional uninterruptible power device 1 can only be used for a single load, and cannot be connected to an adjacent uninterruptible device, and cannot provide power at the right time. Use the load of the adjacent uninterrupted device. In addition, the transformer module 35 of the conventional uninterruptible power device 1 mostly adopts a switching (switching) DC-DC converter with complicated circuit and large volume, so that the overall volume of the uninterruptible device 1 cannot be reduced, and is not suitable for It is used in electronic products that appeal to thin and light.
因此，本發明的一目的在於提供一種包括複數並聯且可相互備援的直流不斷電裝置的直流不斷電系統，使其中的每一直流不斷電裝置可以適時提供電力給相鄰並聯的該直流不斷電裝置。 Accordingly, it is an object of the present invention to provide a DC uninterruptible power system including a plurality of parallel uninterruptible DC uninterruptible devices, such that each of the DC uninterruptible devices can provide power to adjacent parallels in a timely manner. The DC uninterrupted device.
本發明的另一目的在於提供一種包括複數並聯且可相互備援的直流不斷電裝置的直流不斷電系統，其中的直流不斷電裝置能有效縮小整體體積並提升其反應速度。 Another object of the present invention is to provide a DC uninterruptible power system including a plurality of parallel uninterruptible DC uninterruptible devices, wherein the DC uninterruptible device can effectively reduce the overall volume and increase the reaction speed.
於是，本發明一種直流不斷電系統，包含複數個可相互備援的不斷電裝置，每個不斷電裝置接受一直流電源輸入以供應電力給一負載，該等不斷電裝置互相並聯，且每個不斷電裝置均包含：一電力線，與該負載電耦接，且其一端與該直流電源電耦接，以傳輸一第一電流給該負載；一電池模組，與該電力線電耦接，以取得該直流電源的電力並儲存；一電壓偵測電路，與該電力線電耦接，並於偵測該直流電源的一電壓低於一第一預設值時，產生一第一觸發訊號；一電流偵測電路，電耦接在該電力線與一相鄰的不斷電裝置的一電力線之間，並於偵測到該相鄰的直流不斷電裝置在該電力線上所傳輸的該第一電流 低於一第二預設值時，產生一第二觸發訊號；一第一開關，電耦接在該電力線上，用以導接或斷開該電流偵測電路與該電力線；及一控制單元，與該電池模組、該電壓偵測電路、該電流偵測電路及該第一開關電耦接，且根據該第一觸發訊號控制該電池模組輸出電力至該電力線，並根據該第二觸發訊號控制該第一開關導接該電力線與該電流偵測電路。 Accordingly, the present invention provides a DC uninterruptible power system including a plurality of uninterruptible power-saving devices, each of which receives a DC power input to supply power to a load, and the uninterrupted devices are connected in parallel with each other. And each of the uninterruptible devices includes: a power line electrically coupled to the load, and one end of which is electrically coupled to the DC power source to transmit a first current to the load; a battery module, and the power line Electrically coupled to obtain power of the DC power source and stored; a voltage detecting circuit electrically coupled to the power line, and generating a first when detecting that the voltage of the DC power source is lower than a first preset value a triggering signal; a current detecting circuit electrically coupled between the power line and a power line of an adjacent uninterruptible device, and detecting that the adjacent DC uninterrupted device is on the power line The first current transmitted When the second preset value is lower than a second preset value, a second trigger signal is generated; a first switch is electrically coupled to the power line for guiding or disconnecting the current detecting circuit and the power line; and a control unit And electrically connecting the battery module, the voltage detecting circuit, the current detecting circuit and the first switch, and controlling the battery module output power to the power line according to the first trigger signal, and according to the second The trigger signal controls the first switch to conduct the power line and the current detecting circuit.
較佳地，在該第一開關導接該電力線與該電流偵測電路之後，該電流偵測電路偵測該電力線上流至該相鄰的直流不斷電裝置的電力線的一第二電流，並判斷該第二電流大於一第三預設值時，產生一第三觸發訊號給該控制單元，使該控制單元根據該第三觸發訊號控制該第一開關斷開該電力線與該電流偵測電路。 Preferably, after the first switch is connected to the power line and the current detecting circuit, the current detecting circuit detects a second current flowing to the power line of the adjacent DC uninterrupted device on the power line, and When the second current is greater than a third preset value, a third trigger signal is generated to the control unit, so that the control unit controls the first switch to turn off the power line and the current detecting circuit according to the third trigger signal. .
較佳地，在該第一開關導接該電力線與該電流偵測電路之後，該電流偵測電路偵測該相鄰的直流不斷電裝置的電力線上傳輸的該第一電流，並判斷該第一電流達到一第四預設值時，則產生一第四觸發訊號給該控制單元，使該控制單元根據該第四觸發訊號控制該第一開關斷開該電力線與該電流偵測電路。 Preferably, after the first switch is connected to the power line and the current detecting circuit, the current detecting circuit detects the first current transmitted on the power line of the adjacent DC uninterrupted device, and determines the When the first current reaches a fourth preset value, a fourth trigger signal is generated to the control unit, so that the control unit controls the first switch to turn off the power line and the current detecting circuit according to the fourth trigger signal.
再者，本發明一種直流不斷電裝置，接受一直流電源輸入以供應電力給一負載，且可以與一相鄰的直流不斷電裝置並聯，並包含：一電力線，與該負載電耦接，且其一端與該直流電源電耦接，以傳輸電力給該負載；一電池模組，與該電力線電耦接，以取得該直流電源的電力 並儲存；一電壓偵測電路，與該電力線電耦接，並於偵測該直流電源的一電壓低於一第一預設值時，產生一第一觸發訊號；一電流偵測電路，電耦接在該電力線與該相鄰的不斷電裝置的一電力線之間，並於偵測該相鄰的直流不斷電裝置的該電力線上傳輸的一第一電流低於一第二預設值時，產生一第二觸發訊號；一第一開關，電耦接在該電力線上，位於該電流偵測電路與該直流電源之間；及一控制單元，與該電池模組、該電壓偵測電路、該電流偵測電路及該第一開關電耦接，且根據該第一觸發訊號控制該電池模組輸出電力至該電力線，並根據該第二觸發訊號控制該第一開關導接該電力線與該電流偵測電路。 Furthermore, the present invention provides a DC UPS that accepts a DC power input to supply power to a load and can be connected in parallel with an adjacent DC UPS, and includes: a power line electrically coupled to the load And one end is electrically coupled to the DC power source to transmit power to the load; a battery module is electrically coupled to the power line to obtain power of the DC power source And storing a voltage detecting circuit electrically coupled to the power line and generating a first trigger signal when detecting a voltage of the DC power source being lower than a first preset value; a current detecting circuit, a first current that is coupled between the power line and a power line of the adjacent uninterruptible device, and that is detected on the power line of the adjacent DC power device is lower than a second preset a second trigger signal is generated; a first switch electrically coupled to the power line between the current detecting circuit and the DC power source; and a control unit, the battery module, and the voltage detector The measuring circuit, the current detecting circuit and the first switch are electrically coupled, and control the battery module output power to the power line according to the first trigger signal, and control the first switch to be connected according to the second trigger signal. Power line and the current detecting circuit.
較佳地，該電池模組包括一電池單元、一充電電路及一放電電路，該充電電路電耦接在該電力線與該電池單元之間，以取得該直流電源的電力並對該電池單元充電，該放電電路電耦接在該電力線與該電池單元之間，以輸出該電池單元的電力至該電力線，且該控制單元根據該第一觸發訊號控制該電池單元輸出電力至該放電電路。 Preferably, the battery module includes a battery unit, a charging circuit and a discharging circuit. The charging circuit is electrically coupled between the power line and the battery unit to obtain power of the DC power source and charge the battery unit. The discharge circuit is electrically coupled between the power line and the battery unit to output power of the battery unit to the power line, and the control unit controls the battery unit output power to the discharge circuit according to the first trigger signal.
較佳地，該充電電路包含一與該電力線電耦接的直流-直流轉換器及一電耦接在該直流-直流轉換器與該電池單元之間的第二開關，該直流-直流轉換器將該直流電源輸出的電壓轉換成該電池單元的一額定電壓，並經由該第二開關對該電池單元充電。 Preferably, the charging circuit includes a DC-DC converter electrically coupled to the power line and a second switch electrically coupled between the DC-DC converter and the battery unit, the DC-DC converter The voltage output from the DC power source is converted into a rated voltage of the battery unit, and the battery unit is charged via the second switch.
較佳地，該放電電路包含一與該電池單元電耦接的線性調整器及一電耦接在該線性調整器與該電力線之 間的第三開關，該線性調整器將該電池單元輸出的電壓調整至與該直流電源的電壓相同，再透過該第三開關輸出至該電力線。 Preferably, the discharge circuit includes a linear regulator electrically coupled to the battery unit and an electrical coupling between the linear regulator and the power line And a third switch, the linear regulator adjusts the voltage outputted by the battery unit to be the same as the voltage of the DC power source, and then outputs the power to the power line through the third switch.
較佳地，該控制單元包含一與該電池單元電耦接的電池管理模組和一與該電池管理模組、該電壓偵測電路、該電流偵測電路及該第一開關電耦接的控制器，且該控制器根據該第一觸發訊號透過該電池管理模組控制該電池單元輸出電力，並且該控制器根據該第二觸發訊號控制該第一開關導接該電力線與該電流偵測電路。 Preferably, the control unit includes a battery management module electrically coupled to the battery unit and a battery management module, the voltage detection circuit, the current detection circuit and the first switch. a controller, and the controller controls the battery unit output power according to the first trigger signal, and the controller controls the first switch to guide the power line and the current detection according to the second trigger signal Circuit.
較佳地，在該第一開關導接該電力線與該電流偵測電路之後，該電流偵測電路偵測該電力線上流至該相鄰的直流不斷電裝置的一第二電流，並判斷該第二電流大於一第三預設值時，產生一第三觸發訊號給該控制單元，使該控制單元根據該第三觸發訊號控制該第一開關斷開該電力線與該電流偵測電路。 Preferably, after the first switch is connected to the power line and the current detecting circuit, the current detecting circuit detects a second current flowing to the adjacent DC uninterrupting device on the power line, and determines the When the second current is greater than a third preset value, a third trigger signal is generated to the control unit, so that the control unit controls the first switch to turn off the power line and the current detecting circuit according to the third trigger signal.
較佳地，在該第一開關導接該電力線與該電流偵測電路之後，該電流偵測電路偵測該相鄰的直流不斷電裝置的該第一電流，並判斷該第一電流達到一第四預設值時，則產生一第四觸發訊號給該控制單元，使該控制單元根據該第四觸發訊號控制該第一開關斷開該電力線與該電流偵測電路。 Preferably, after the first switch is connected to the power line and the current detecting circuit, the current detecting circuit detects the first current of the adjacent DC uninterrupted device, and determines that the first current reaches When a fourth preset value is generated, a fourth trigger signal is generated to the control unit, so that the control unit controls the first switch to turn off the power line and the current detecting circuit according to the fourth trigger signal.
本發明藉由在直流不斷電裝置的電力線上設置用以電耦接電力線與該相鄰的直流不斷電裝置的第一開關，並且電耦接在第一開關與該相鄰的直流不斷電裝置之 間的電流偵測電路偵測該相鄰的直流不斷電裝置供電不正常時，即產生第一觸發訊號觸發控制單元控制第一開關導接電力線與該相鄰的直流不斷電裝置，以適時透過電力線供電給該相鄰的直流不斷電裝置，而達到直流不斷電裝置之間即時相互支援電力的功效。並且在直流不斷電裝置的該放電電路中採用線性調整器做為降壓轉換電路，可進一步縮小直流不斷電裝置的整體體積、耗電量及成本，並提升放電電路的反應時間。 The present invention provides a first switch for electrically coupling a power line with the adjacent DC uninterruptible device on a power line of the DC uninterruptible device, and is electrically coupled to the first switch and the adjacent DC Power off device When the current detecting circuit detects that the adjacent DC uninterruptible power supply is abnormal, the first trigger signal is generated, and the control unit controls the first switch to guide the power line and the adjacent DC uninterruptible device to The power supply is supplied to the adjacent DC uninterruptible device through the power line in time to achieve the instant mutual support power between the DC uninterrupted devices. Moreover, the linear regulator is used as the step-down conversion circuit in the discharge circuit of the DC power-saving device, which can further reduce the overall volume, power consumption and cost of the DC power-saving device, and improve the reaction time of the discharge circuit.
2、5‧‧‧直流不斷電裝置 2, 5‧‧‧ DC continuous power device
3‧‧‧直流電源 3‧‧‧DC power supply
4、6‧‧‧負載 4, 6‧‧‧ load
21、51‧‧‧電力線 21, 51‧‧‧Power line
22‧‧‧電池模組 22‧‧‧ battery module
23‧‧‧電壓偵測電路 23‧‧‧Voltage detection circuit
24‧‧‧第一開關 24‧‧‧First switch
25‧‧‧電流偵測電路 25‧‧‧ Current detection circuit
26‧‧‧控制單元 26‧‧‧Control unit
221‧‧‧充電電路 221‧‧‧Charging circuit
222‧‧‧電池單元 222‧‧‧ battery unit
223‧‧‧放電電路 223‧‧‧Discharge circuit
224‧‧‧直流-直流轉換器 224‧‧‧DC-DC converter
225‧‧‧第二開關 225‧‧‧second switch
226‧‧‧線性調整器 226‧‧‧Linear adjuster
227‧‧‧第三開關 227‧‧‧ third switch
261‧‧‧電池管理模組 261‧‧‧Battery Management Module
262‧‧‧控制器 262‧‧‧ Controller
400‧‧‧直流不斷電系統 400‧‧‧DC uninterruptible power system
Vdc‧‧‧電壓 Vdc‧‧‧ voltage
I1‧‧‧第一電流 I 1 ‧‧‧First current
I2‧‧‧第二電流 I 2 ‧‧‧second current
CS1‧‧‧第一控制訊號 CS1‧‧‧First control signal
CS2‧‧‧第二控制訊號 CS2‧‧‧second control signal
DS1‧‧‧第三控制訊號 DS1‧‧‧ third control signal
DS2‧‧‧第四控制訊號 DS2‧‧‧ fourth control signal
U1~Un‧‧‧直流不斷電裝置 U1~Un‧‧‧ DC uninterruptible device
S1~Sn‧‧‧第一開關 S1~Sn‧‧‧ first switch
L1~Ln‧‧‧負載 L1~Ln‧‧‧ load
本發明之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是一電路方塊圖，說明習知一種不斷電裝置的電路方塊及其運作方式；圖2是一電路方塊圖，說明本發明直流不斷電裝置的一較佳實施例的主要電路方塊及其運作方式；圖3是一電路示意圖，說明本發明將複數個本實施例的直流不斷電裝置並聯連結成一直流不斷電系統時，可以即時地互相支援電力；及圖4是一電路方塊圖，說明本實施例的直流不斷電裝置的細部電路方塊及其相互連結關係。 Other features and effects of the present invention will be apparent from the following description of the drawings. FIG. 1 is a circuit block diagram illustrating a circuit block of an uninterruptible device and its operation; FIG. Is a circuit block diagram illustrating the main circuit block of a preferred embodiment of the DC power-supplied device of the present invention and its operation mode; FIG. 3 is a circuit diagram illustrating the DC power supply of the present embodiment. When the devices are connected in parallel to form a DC power system, the power can be mutually supported in real time; and FIG. 4 is a circuit block diagram illustrating the detailed circuit blocks of the DC power storage device of the present embodiment and their interconnection relationship.
在本發明被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。 Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.
參見圖2所示，是本發明直流不斷電裝置2的一較佳實施例，其接受一直流電源3輸入以供應電力給一負載4，且可以與一相鄰的直流不斷電裝置5並聯，並包含一電力線21、一電池模組22、一電壓偵測電路23、一第一開關24、一電流偵測電路25及一控制單元26。其中電力線21與負載4電耦接，且電力線21的一端與直流電源3電耦接，以傳輸電力給負載4，負載4在本實施例中可以是任何使用直流電的電子裝置或電子設備，例如筆記型電腦、伺服器等。而且該相鄰的直流不斷電裝置5與本實施例直流不斷電裝置2具有完全相同的電路架構，且電流偵測電路25是電耦接電力線21與相鄰的直流不斷電裝置5的一電力線51之間，而第一開關24是電耦接在電力線21上，並受控制單元26控制以導接或斷開電流偵測電路25與電力線21。 Referring to FIG. 2, it is a preferred embodiment of the DC power-sequencing device 2 of the present invention, which receives the input of the DC power source 3 to supply power to a load 4, and can be connected to an adjacent DC power-saving device 5. Parallel, and comprising a power line 21, a battery module 22, a voltage detecting circuit 23, a first switch 24, a current detecting circuit 25 and a control unit 26. The power line 21 is electrically coupled to the load 4, and one end of the power line 21 is electrically coupled to the DC power source 3 to transmit power to the load 4. In this embodiment, the load 4 can be any electronic device or electronic device that uses direct current, for example, Notebook, server, etc. Moreover, the adjacent DC uninterruptible device 5 has the same circuit structure as the DC uninterruptible device 2 of the present embodiment, and the current detecting circuit 25 is electrically coupled to the power line 21 and the adjacent DC uninterrupting device 5 The first switch 24 is electrically coupled to the power line 21 and is controlled by the control unit 26 to conduct or disconnect the current detecting circuit 25 and the power line 21.
電池模組22與電力線21電耦接，以取得直流電源3的電力並儲存。電池模組22主要包含一充電電路221、一電池單元222及一放電電路223。充電電路221將直流電源3的電壓Vdc轉成電池單元222的一額定電壓並對電池單元222充電。電池單元222可以是現有的鋰、鎳氫、鎳鎘、鉛酸等可充電電池以複數個相串聯、並聯或串並聯所組成。放電電路223用以將電池單元222輸出的電壓轉成與直流電源Vdc相同的電壓(即負載4所需的電壓)再輸出至電力線21。 The battery module 22 is electrically coupled to the power line 21 to obtain power of the DC power source 3 and store it. The battery module 22 mainly includes a charging circuit 221, a battery unit 222, and a discharging circuit 223. The charging circuit 221 converts the voltage Vdc of the DC power source 3 into a rated voltage of the battery unit 222 and charges the battery unit 222. The battery unit 222 may be an existing rechargeable battery such as lithium, nickel hydrogen, nickel cadmium, or lead acid, which is composed of a plurality of phases connected in series, in parallel, or in series and parallel. The discharge circuit 223 is configured to convert the voltage output from the battery unit 222 into the same voltage as the DC power source Vdc (ie, the voltage required for the load 4) and output it to the power line 21.
電壓偵測電路23與電力線21電耦接，以偵測 直流電源3的一電壓Vdc，並於判斷電壓Vdc低於一第一預設值時，產生一第一觸發訊號。電流偵測電路26電耦接在第一開關24與相鄰的直流不斷電裝置5的電力線51之間，並偵測相鄰的直流不斷電裝置5的電力線51上傳輸的一第一電流I1，且於判斷第一電流I1低於一第二預設值時，產生一第二觸發訊號。控制單元26與電池模組22、電壓偵測電路23、電流偵測電路25及第一開關24電耦接，以根據第一觸發訊號控制電池模組22輸出電力至電力線21，並根據第二觸發訊號控制第一開關24導接電力線21與電流偵測電路25。 The voltage detecting circuit 23 is electrically coupled to the power line 21 to detect a voltage Vdc of the DC power source 3, and generates a first trigger signal when the determining voltage Vdc is lower than a first preset value. The current detecting circuit 26 is electrically coupled between the first switch 24 and the power line 51 of the adjacent DC power-supplied device 5, and detects a first transmission on the power line 51 of the adjacent DC power-saving device 5. The current I 1 is generated, and when it is determined that the first current I 1 is lower than a second preset value, a second trigger signal is generated. The control unit 26 is electrically coupled to the battery module 22, the voltage detecting circuit 23, the current detecting circuit 25, and the first switch 24 to control the output power of the battery module 22 to the power line 21 according to the first trigger signal, and according to the second The trigger signal controls the first switch 24 to conduct the power line 21 and the current detecting circuit 25.
因此，當控制單元26收到來自電壓偵測電路23的第一觸發訊號時，表示直流電源3供電不正常，例如停止供電或供電不穩，則控制單元26會控制電池模組22輸出電力至電力線21以供給負載4，而達到使負載4不斷電的目的。 Therefore, when the control unit 26 receives the first trigger signal from the voltage detecting circuit 23, indicating that the DC power supply 3 is not properly powered, for example, the power supply is stopped or the power supply is unstable, the control unit 26 controls the battery module 22 to output power to The power line 21 is supplied to the load 4 to achieve the purpose of making the load 4 uninterrupted.
而且，當直流電源3正常供電且控制單元26收到來自電流偵測電路25的第二觸發訊號時，表示相鄰的直流不斷電裝置5無法正常供電，則控制單元26會立即控制第一開關24導接電力線21與電流偵測電路26，使直流電源3能經由電力線21、第一開關24及電流偵測電路25及時供電給電耦接在相鄰的直流不斷電裝置5的電力線51上的負載6，而達到使與相鄰的直流不斷電裝置5電耦接的負載6不斷電的目的。當然，在上述實施例中，即使直流電源3供電不正常而改由電池模組22供電時，電池模組22 亦能夠經由電力線21、第一開關24及電流偵測電路25及時供電給與相鄰的直流不斷電裝置5電耦接的負載6。 Moreover, when the DC power supply 3 is normally powered and the control unit 26 receives the second trigger signal from the current detecting circuit 25, indicating that the adjacent DC uninterruptible power device 5 cannot supply power normally, the control unit 26 immediately controls the first The switch 24 is connected to the power line 21 and the current detecting circuit 26, so that the DC power source 3 can be powered in time via the power line 21, the first switch 24 and the current detecting circuit 25 to the power line 51 electrically coupled to the adjacent DC uninterruptible device 5. The load 6 on the upper side achieves the purpose of making the load 6 electrically coupled to the adjacent DC uninterruptible device 5 uninterrupted. Of course, in the above embodiment, even if the DC power supply 3 is not powered normally and is powered by the battery module 22, the battery module 22 It is also possible to supply power to the load 6 electrically coupled to the adjacent DC power-supplied device 5 via the power line 21, the first switch 24, and the current detecting circuit 25 in time.
再者，在第一開關24導接電力線21與相鄰的直流不斷電裝置5後，電流偵測電路25會持續偵測電力線21上由直流不斷電裝置2流至相鄰的直流不斷電裝置5的電力線51的一第二電流I2，並於判斷第二電流I2大於一第三預設值(過電流)，例如相鄰的直流不斷電裝置5發生短路情況時，產生一第三觸發訊號給控制單元26，令控制單元26根據第三觸發訊號控制第一開關24斷開(不導接)電力線21與電流偵測電路25，以保護直流不斷電裝置2本身電路不致因輸出電流過大(過電流)而燒燬。 Furthermore, after the first switch 24 is connected to the power line 21 and the adjacent DC power-dissipating device 5, the current detecting circuit 25 continuously detects that the power line 21 is flowing from the DC uninterrupter device 2 to the adjacent DC line. a second current I 2 of the power line 51 of the power-off device 5, and determining that the second current I 2 is greater than a third preset value (overcurrent), for example, when a short-circuit condition occurs between adjacent DC uninterruptible devices 5 A third trigger signal is generated to the control unit 26, so that the control unit 26 controls the first switch 24 to open (non-conduct) the power line 21 and the current detecting circuit 25 according to the third trigger signal to protect the DC uninterrupting device 2 itself. The circuit does not burn out due to excessive output current (overcurrent).
另外，當相鄰的直流不斷電裝置5恢復正常供電，且電流偵測電路25偵測到在相鄰的直流不斷電裝置5的電力線51上傳輸的第一電流I1，並判斷第一電流I1達到一第四預設值時，則產生一第四觸發訊號給控制單元26，控制單元26即根據第四觸發訊號控制第一開關24斷開(不導接)電力線21與電流偵測電路25，而不再供電給相鄰的直流不斷電裝置5。 In addition, when the adjacent DC power-supplied device 5 resumes normal power supply, and the current detecting circuit 25 detects the first current I 1 transmitted on the power line 51 of the adjacent DC power-saving device 5, and judges When a current I 1 reaches a fourth preset value, a fourth trigger signal is generated to the control unit 26, and the control unit 26 controls the first switch 24 to turn off (non-conduct) the power line 21 and the current according to the fourth trigger signal. The circuit 25 is detected and no longer supplied to the adjacent DC uninterrupted device 5.
藉此，如圖3所示，藉由將複數個本實施例直流不斷電裝置U1~Un透過其第一開關S1~Sn串聯連結成一直流不斷電系統400時，當其中一個直流不斷電裝置，例如直流不斷電裝置U3無法正常供電給其負載L3時，直流不斷電裝置U2會立即偵測到，並令其第一開關S2即時導接其電力線與直流不斷電裝置U3的電力線，而及時供電 給直流不斷電裝置U3所電耦接的負載L3；同理，當直流不斷電裝置U2無法正常供電時，直流不斷電裝置U1將能及時提供電力給直流不斷電裝置U2，而達到直流不斷電裝置U1~Un之間適時相互支援電力的功效。 Therefore, as shown in FIG. 3, when a plurality of DC uninterrupted devices U1 to Un of the present embodiment are connected in series through the first switches S1 to Sn to the DC power system 400, when one of the DCs is continuously When the electric device, such as the DC uninterruptible device U3, cannot supply power to its load L3, the DC uninterruptible device U2 will immediately detect it, and let its first switch S2 immediately connect its power line and DC uninterrupted device U3. Power line while powering in time The load L3 electrically coupled to the DC uninterruptible device U3; similarly, when the DC uninterruptible device U2 cannot be normally powered, the DC uninterruptible device U1 can supply power to the DC uninterruptible device U2 in time, and It achieves the effect of mutually supporting power between DC uninterruptible devices U1~Un.
再參見圖4，是本實施例直流不斷電裝置2的電池模組22及控制單元26的更細部電路方塊圖。其中電池模組22的充電電路221還包含一直流-直流轉換器224及一第二開關225，放電電路227還包含一與電池單元222電耦接的線性調整器(linear regulator)226及一電耦接在線性調整器226與電力線21之間的第三開關227。且控制單元26還包含一與電池單元222電耦接的電池管理模組261及一控制器262。 Referring to FIG. 4 again, it is a block diagram of a more detailed circuit of the battery module 22 and the control unit 26 of the DC power-supplied device 2 of the present embodiment. The charging circuit 221 of the battery module 22 further includes a DC-DC converter 224 and a second switch 225. The discharging circuit 227 further includes a linear regulator 226 and a battery electrically coupled to the battery unit 222. A third switch 227 is coupled between the linear regulator 226 and the power line 21. The control unit 26 further includes a battery management module 261 and a controller 262 electrically coupled to the battery unit 222.
直流-直流轉換器224用以將直流電源3的電壓Vdc轉成電池單元222的額定電壓再經由第二開關225對電池單元222充電。而直流-直流轉換器224及第二開關225作動與否則是由控制單元26的控制器262所輸出的一第一控制訊號CS1及一第二控制訊號CS2分別控制，例如控制器262未收到第一觸發訊號時，則控制充電電路221對電池單元222充電直到電池單元222充飽電，而當控制器262收到第一觸發訊號後，即透過電池管理模組261控制電池單元222放電(輸出電力)，同時因為此時直流電源3無法正常供電，所以控制器262會控制充電電路221暫停對電池單元222充電，直到直流電源3恢復正常供電。 The DC-DC converter 224 is configured to convert the voltage Vdc of the DC power source 3 into the rated voltage of the battery unit 222 and then charge the battery unit 222 via the second switch 225. The DC-DC converter 224 and the second switch 225 are respectively controlled by a first control signal CS1 and a second control signal CS2 outputted by the controller 262 of the control unit 26, for example, the controller 262 does not receive When the first trigger signal is received, the charging circuit 221 is controlled to charge the battery unit 222 until the battery unit 222 is fully charged, and when the controller 262 receives the first trigger signal, the battery unit 222 is controlled to discharge through the battery management module 261 ( At the same time, since the DC power source 3 cannot supply power normally, the controller 262 controls the charging circuit 221 to suspend charging of the battery unit 222 until the DC power source 3 resumes normal power supply.
此外，控制器262還輸出一第三控制訊號DS1 及一第四控制訊號DS2分別控制線性調整器226及第三開關227作動與否，使線性調整器226對電池單元222輸出的電壓進行降壓，轉換成適於負載4的電壓(與直流電源3的電壓Vdc相同)後，再經由第三開關227送至電力線21以適時供給負載4。例如當控制器262收到第一觸發訊號時，控制器262即控制放電電路223運作，使輸出與直流電流3相同的電壓至電力線21供給負載4使用，直到直流電源3恢復正常供電。 In addition, the controller 262 also outputs a third control signal DS1. And a fourth control signal DS2 controls whether the linear regulator 226 and the third switch 227 are activated, respectively, so that the linear regulator 226 steps down the voltage output by the battery unit 222 to convert the voltage into a voltage suitable for the load 4 (with the DC power supply). After the voltage Vdc of 3 is the same, it is sent to the power line 21 via the third switch 227 to supply the load 4 in a timely manner. For example, when the controller 262 receives the first trigger signal, the controller 262 controls the discharge circuit 223 to operate, so that the same voltage as the direct current 3 is outputted to the power line 21 for use by the load 4 until the DC power source 3 resumes normal power supply.
值得一提的是，本實施例之放電電路223採用的線性調整器226又稱低壓差(Low Dropout，簡稱LDO)調整器，其具有反應速度較快、低功耗、體積小、成本低等優點，因此能具體減少直流不斷電裝置2的體積、耗電量及成本，並提升放電電路223及直流不斷電裝置2的反應速度。 It is worth mentioning that the linear regulator 226 used in the discharge circuit 223 of the embodiment is also called a low dropout (LDO) regulator, which has a fast response speed, low power consumption, small volume, low cost, and the like. Therefore, the volume, power consumption, and cost of the DC power-saving device 2 can be specifically reduced, and the reaction speed of the discharge circuit 223 and the DC power-saving device 2 can be improved.
綜上所述，本實施例藉由在直流不斷電裝置2的電力線21上設置用以電耦接電力線21與相鄰的直流不斷電裝置5的第一開關25，並且電耦接在第一開關25與相鄰的直流不斷電裝置5之間的電流偵測電路25偵測相鄰的直流不斷電裝置5供電不正常時，即產生第一觸發訊號觸發控制單元26控制第一開關25導接電力線21與相鄰的直流不斷電裝置5，以適時透過電力線21供電給與相鄰的直流不斷電裝置5電耦接的負載，而達到直流不斷電裝置之間適時相互支援電力的功效，並且在放電電路223中採用線性調整器226做為降壓轉換電路，可進一步縮小直流不 斷電裝置2的整體體積、耗電量及成本，並提升放電電路223及直流不斷電裝置2的反應時間，確實達成本發明之目的。 In summary, the first switch 25 for electrically coupling the power line 21 and the adjacent DC power-supplied device 5 is disposed on the power line 21 of the DC power-supplied device 2, and is electrically coupled to When the current detecting circuit 25 between the first switch 25 and the adjacent DC power saving device 5 detects that the power supply of the adjacent DC power saving device 5 is abnormal, the first trigger signal is generated and the control unit 26 controls the first A switch 25 leads the power line 21 and the adjacent DC power-dissipating device 5 to supply power to the load coupled to the adjacent DC power-dissipating device 5 through the power line 21 in a timely manner, thereby reaching between the DC power-saving devices The power of each other is supported in time, and the linear regulator 226 is used as the step-down conversion circuit in the discharge circuit 223 to further reduce the DC The overall volume, power consumption, and cost of the power-off device 2 increase the reaction time of the discharge circuit 223 and the DC power-up device 2, and the object of the present invention is achieved.
惟以上所述者，僅為本發明之較佳實施例而已，當不能以此限定本發明實施之範圍，即大凡依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本發明專利涵蓋之範圍內。 The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.
2、5‧‧‧直流不斷電裝置 2, 5‧‧‧ DC continuous power device
3‧‧‧直流電源 3‧‧‧DC power supply
4、6‧‧‧負載 4, 6‧‧‧ load
21、51‧‧‧電力線 21, 51‧‧‧Power line
22‧‧‧電池模組 22‧‧‧ battery module
23‧‧‧電壓偵測電路 23‧‧‧Voltage detection circuit
24‧‧‧第一開關 24‧‧‧First switch
25‧‧‧電流偵測電路 25‧‧‧ Current detection circuit
26‧‧‧控制單元 26‧‧‧Control unit
221‧‧‧充電電路 221‧‧‧Charging circuit
222‧‧‧電池單元 222‧‧‧ battery unit
223‧‧‧放電電路 223‧‧‧Discharge circuit
Vdc‧‧‧電壓 Vdc‧‧‧ voltage
I1‧‧‧第一電流 I 1 ‧‧‧First current
I2‧‧‧第二電流 I 2 ‧‧‧second current
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| US20050038614A1 (en) * | 2001-11-27 | 2005-02-17 | Steve Botts | Remote battery monitoring systems and sensors |
| TWI415366B (en) * | 2009-12-29 | 2013-11-11 | Delta Electronics Inc | Dc uninterruptible power supply circuit having combined charging and discharging circuit |
| EP2595268B1 (en) * | 2011-11-17 | 2017-01-04 | Hamilton Sundstrand Corporation | Minimal interruption DC power supply |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI552485B (en) * | 2015-09-30 | 2016-10-01 | 光寶電子（廣州）有限公司 | Dc backup equipment |
| TWI694653B (en) * | 2019-09-04 | 2020-05-21 | 台達電子工業股份有限公司 | Dc uninterruptible power supply apparatus with bidirectional protection function |
| TWI737373B (en) * | 2020-07-01 | 2021-08-21 | 光寶電子（廣州）有限公司 | Battery backup system and voltage detection and control circuit thereof |
| US11211817B1 (en) | 2020-11-09 | 2021-12-28 | Voltronic Power Technology Corp. | Uninterruptible power supply capable of intelligently controlling direct current output |
| TWI762022B (en) * | 2020-11-09 | 2022-04-21 | 旭隼科技股份有限公司 | Uninterruptible power supply with intelligent control of dc output |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI511417B (en) | 2015-12-01 |
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