TWI739064B - Uninterruptible power supply with dc output - Google Patents

Abstract

An uninterruptible power supply with DC output includes an AC-to-DC conversion circuit coupled to an AC power source for outputting a first DC power, a charging and discharging module for outputting a second DC power, at least one power module coupled to the AC-to-DC conversion circuit and the charging and discharging module, and a user operation interface disposed between the at least one power module and at least one load, and the user operation interface includes at least one operation unit. The power required for each load is selected by each operation unit so that at least one power module provides uninterruptedly supply power to each load.

Description

DC output uninterruptible power supply

The present invention relates to a DC output power supply, in particular to a DC output uninterrupted power supply that can freely adjust the output of each port and has the function of an uninterrupted power system.

Generally speaking, the power supply in the prior art is usually configured according to the power (or voltage, current) required by each electronic device in use. Due to the diversification of electronic products used by modern people, related companies have developed power supplies with multiple output ports, allowing users to use multiple or multiple electronic devices at the same time, and only occupy one mains input port , And achieve an input-to-multiple-output power supply architecture.

However, in actual use, the aforementioned power supply with multi-port output must adapt to diversified requirements, and if each output port cannot freely adjust the output-related electrical value according to the use demand, the number of output ports will be difficult. Reduced, not only bulky and difficult to carry, but also higher production costs. In addition, the prior art power supply cannot protect the safety of most of the loads that are electrically connected to it in the event of a sudden abnormality in the mains, especially electronic devices such as computer hosts, monitoring systems, precision electronic instruments, and medical instruments. When the mains power is interrupted, the electronic equipment is likely to cause internal parts damage or data loss due to sudden power interruption, which will cause serious and irreversible consequences.

Therefore, how to design a DC output uninterruptible power supply to solve the aforementioned technical problems is an important subject studied by the inventor of this case.

The main purpose of the present invention is to provide a DC output uninterruptible power supply, through the circuit matching and integration, can solve the aforementioned output ports can not freely adjust the output related electrical value according to the use needs, and in the case of sudden shutdown of the mains It is a technical problem that cannot protect the safety of most of the loads connected to it, so as to achieve the purpose of reducing the size, reducing the production cost, and avoiding hardware damage and data loss due to sudden power interruption.

In order to achieve the foregoing objective, a DC output uninterruptible power supply provided by the present invention includes: an AC to DC conversion circuit, which is coupled to an AC power source and outputs a first DC power source; and a charging and discharging module, which outputs a second DC power source At least one power supply module, coupled to the AC-DC conversion circuit and the charging and discharging module, and receiving one of the first DC power supply and the second DC power supply; and the user operation interface, configured in the at least one power supply module and There is at least one operation unit between at least one load; wherein, each operation unit enables at least one power supply module to provide power to each load according to the power supply required by each load.

In order to achieve the foregoing objective, another DC output uninterruptible power supply provided by the present invention includes: a power factor correction stage circuit, which is coupled to an AC power source and outputs a first DC power source; and a charging and discharging module that outputs a second power source. DC power supply; at least one power supply module coupled to the power factor correction stage circuit and receiving at least one of the first DC power supply and the second DC power supply; and the user operation interface, which is configured in the at least one power supply module and at least There is at least one operation unit between a load; wherein, each operation unit enables the at least one power module to provide power to each load according to the power required by each load.

During the use of any of the DC output uninterruptible power supply of the present invention, when the AC power is normal, at least one power module receives the first DC power; when the AC power is abnormal, at least one power module receives the first DC power. Two DC power supplies; in addition, since the user can select the power supply required by each load through at least one operating unit (which can be a DIP switch, knob, etc.), at least one power supply module can convert the first DC power supply and the second DC power supply One of them provides uninterrupted power supply to at least one load.

10: AC to DC conversion circuit

10’: Power factor correction stage circuit

11a: Flyback circuit

11b: Half-bridge circuit

11c: Full bridge circuit

11d: Forward circuit

11e: Push-pull circuit

12: Anti-electromagnetic interference filter

20: Charge and discharge module

21: battery unit

22: Boost conversion unit

23: Charging unit

30, 30’: Power module

31: Isolated topology

40: User interface

41: operating unit

100: AC power

200: load

300: Sub-controller

400: main controller

SW1~SWn: Power switch

Sc1~Scn: control signal

1 is a schematic diagram of the structure of the first embodiment of the DC output uninterruptible power supply of the present invention; FIGS. 2A to 2F are circuit diagrams of the AC to DC conversion circuit of the DC output uninterruptible power supply of the present invention; FIG. 3A is the The circuit block diagram of the AC-DC conversion circuit and the charging and discharging module configuration of the second embodiment of the DC output uninterruptible power supply of the present invention; FIG. 3B is the AC of the third embodiment of the DC output uninterruptible power supply of the present invention The circuit block diagram of the DC conversion circuit and the configuration of the charging and discharging module; Figures 4A to 4C are the circuit block diagrams of the power module and the operating unit configuration of the first embodiment of the DC output uninterruptible power supply of the present invention; Figure 5 Fig. 6A to Fig. 6B are circuit diagrams of the power factor correction stage circuit of the DC output uninterruptible power supply of the present invention; 7 is a circuit block diagram of the power factor correction stage circuit and the configuration of the charging and discharging module of the fifth embodiment of the DC output uninterruptible power supply of the present invention; and FIGS. 8A to 8C are the DC output uninterruptible power supply of the present invention The circuit block diagram of the power supply module and operation unit configuration of the fourth embodiment of the supply.

The following is a specific embodiment to illustrate the implementation of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied by other different specific examples, and various details in the specification of the present invention can also be modified and changed based on different viewpoints and applications without departing from the spirit of the present invention.

It should be noted that the structure, ratio, size, number of components, etc. shown in the drawings in this specification are only used to match the content disclosed in the specification for the understanding and reading of those familiar with this technology, and are not intended to limit the scope of the present invention. The limited conditions of implementation do not have any technical significance. Any structural modification, proportional relationship change, or size adjustment should fall within the scope of the present invention without affecting the effects and objectives that can be achieved The technical content disclosed by the invention can be covered.

The technical content and detailed description of the present invention are described below in conjunction with the drawings.

Please refer to FIG. 1 to FIG. 2F, where FIG. 1 is a schematic diagram of the structure of the first embodiment of the DC output uninterruptible power supply of the present invention; FIGS. 2A to 2F are the DC output uninterruptible power supply of the present invention The circuit diagram of the AC-DC conversion circuit.

As shown in FIG. 1, the first embodiment of the DC output uninterruptible power supply of the present invention includes: an AC/DC conversion circuit 10, a charging and discharging module 20, at least one power module 30 and a user operation interface 40.

Wherein, the AC-DC conversion circuit 10 is coupled to an AC power source 100, and converts the AC power source 100 to output a first DC power source (not shown in the figure). The charging and discharging module 20 is coupled to the AC-DC conversion circuit 10 and outputs a second DC power supply (not shown in the figure).

The charging and discharging module 20 includes a battery unit 21, a boost conversion unit 22 and a charging unit 23. Wherein, the battery unit 21 may be a rechargeable electric energy storage element such as a lithium battery, a nickel-hydrogen battery, a hydrogen-oxygen battery, or a lead-acid battery, but the present invention is not limited by this. The boost conversion unit 22 is coupled to the battery unit 21 and at least one power module 30. In the first embodiment of the present invention, the charging unit 23 is coupled to the battery unit 21 and the DC output side of the AC-DC conversion circuit 10 (as shown in FIG. 1). When the battery unit 21 is being charged, the charging unit 23 receives the first DC power output from the AC-DC conversion circuit 10 and converts it into a voltage suitable for charging the battery unit 21.

At least one power module 30 is coupled to the AC-DC conversion circuit 10 and the charging and discharging module 20, and receives one of the first DC power source and the second DC power source. Furthermore, when the AC power supply 100 is normal, each power supply module 30 receives the first DC power supply and converts the first DC power supply to provide the power required by each load 200; when the AC power supply 100 is abnormal, the battery unit 21 To output electric energy, the output voltage is boosted by the boost conversion unit 22 to provide a second DC power source, so that each power supply module 30 receives the second DC power source and converts the second DC power source to provide the power required by each load 200 , In order to realize the uninterrupted power supply to each load 200.

The user operation interface 40 is coupled to at least one power module 30 and at least one load 200, and the user operation interface 40 is configured to control the connection between each power module 30 and each load 200 At least one operating unit 41 for coupling (turning on) or decoupling (turning off) and selecting the power required by each load 200. The operating units 41 may be adjustable structures such as dial switches, knobs, etc., but the present invention is not limited by this, so that users can freely match different numbers of loads, adjust the power values required by each load 200, or according to usage requirements. Each load 200 can freely adjust the relevant electrical value (such as at least one of a voltage value and a current value) output by at least one power module 30 as required by each load 200. In the first embodiment of the present invention, each operating unit 41 can To control one power supply module 30, each operating unit 41 can also control two or more power supply modules 30 at the same time to meet the high power demand load, so that each power supply module 30 can convert the first DC power supply and the second DC power supply. One of the DC power supplies provides uninterrupted power supply to each load 200.

As shown in FIGS. 2A to 2F, in the first embodiment of the DC output uninterruptible power supply of the present invention, the AC-DC conversion circuit 10 may include an isolated topological structure coupled to the AC power supply 100. In the first embodiment of the present invention, the isolated topology can be a flyback circuit 11a (as shown in FIG. 2A), a half-bridge circuit 11b (as shown in FIG. 2B). (Shown), full-bridge circuit 11c (as shown in Figure 2C), forward circuit 11d (as shown in Figure 2D), and push-pull circuit 11e (as shown in Figure 2D) 2E). Furthermore, the AC-DC conversion circuit 10 can further include an anti-electromagnetic interference filter 12 (as shown in FIG. 2F), which can be matched with any of the aforementioned isolated topologies to form the AC-DC conversion circuit 10.

Please refer to FIG. 3A and FIG. 3B. FIG. 3A is a circuit block diagram of the AC-DC conversion circuit and the charging and discharging module configuration of the second embodiment of the DC output uninterruptible power supply of the present invention; FIG. 3B is the DC-DC converter of the present invention. The circuit block diagram of the AC-DC conversion circuit and the charging and discharging module configuration of the third embodiment of the uninterruptible power supply.

As shown in FIG. 3A, the second embodiment of the DC output uninterruptible power supply of the present invention is substantially the same as the foregoing first embodiment, except that the configuration relationship between the AC-DC conversion circuit and the charging and discharging module is different. In the second embodiment, the charging unit 23 is coupled to the battery unit 21 and an AC input side of the AC-DC conversion circuit 10 (as shown in FIG. 3A, the charging unit 23 is coupled to the AC power supply 100). When the battery unit 21 is being charged, the charging unit 23 receives the AC power output from the AC power source 100 and converts it into a voltage suitable for charging the battery unit 21. Furthermore, when the AC power supply 100 is abnormal, the battery unit 21 outputs electric energy, and the output voltage is boosted by the boost conversion unit 22 to provide a second DC power supply, so that each power supply module 30 receives the second DC power supply and converts The second DC power supply provides power required by each load 200 to realize uninterrupted power supply to each load 200.

As shown in FIG. 3B, the third embodiment of the DC output uninterruptible power supply of the present invention is substantially the same as the foregoing first embodiment, except that the configuration relationship between the AC-DC conversion circuit and the charging and discharging module is different. In the third embodiment, the charging unit 23 is coupled to the battery unit 21 and an internal DC side of the AC-DC conversion circuit 10 (as shown in FIG. 3B, the charging unit 23 is coupled to the AC input of the AC-DC conversion circuit 10). Side and between the DC output side). Taking the AC-DC conversion circuit 10 shown in FIG. 2A as a flyback circuit 11a as an example, the charging unit 23 may be coupled to the output side of the full-wave rectifier circuit (that is, the input side of the flyback circuit 11a) to realize the charging unit 23 The scheme of coupling the internal DC side of the AC-DC conversion circuit 10.

Please refer to FIGS. 4A to 4C, which are block diagrams of the power supply module and the operating unit configuration circuit of the first embodiment of the DC output uninterruptible power supply of the present invention. In the first embodiment of the present invention, each power supply module 30 includes a step-down circuit having a power switch (SW1, SW2...SWn as shown in FIG. 4A), and the step-down circuit receives the first DC power supply. And the second DC One of the power sources, and one of the first DC power source and the second DC power source is converted, and the output voltage of each power module 30 is controlled to provide the power required by each load 200. In FIGS. 4A to 4C, each operating unit 41 can control one power module 30, and each operating unit 41 can also control two or more power modules 30 at the same time. Furthermore, each operating unit 41 can be controlled by one sub-controller 300 to control each power switch (SW1, SW2...SWn), and each operating unit 41 can also be further controlled by two or more sub-controllers 300 at the same time. Two or more power switches (SW1, SW2...SWn).

As shown in FIG. 4A, in the first embodiment of the present invention, the first configuration relationship between the power module 30 and the operating unit 41 is: each operating unit 41 is controlled by at least one sub-controller 300 included in the power module 30 At least one power switch (SW1, SW2...SWn). For example, one sub-controller 300 outputs a control signal Sc1 to control the power switch SW1, another sub-controller 300 outputs a control signal Sc2 to control the power switch SW2, and another sub-controller 300 outputs a control signal Scn to control the power switch SWn. Wherein, the control signals Sc1~Scn can be pulse width modulation (PWM) control signals, which control the duty cycle of each power switch (SW1, SW2...SWn) to control the power supply module 30 The output voltage. Wherein, each power switch (SW1, SW2...SWn) is correspondingly coupled to each sub-controller 300, and each sub-controller 300 is communicatively coupled to each other to provide control between the power switches (SW1, SW2...SWn) communication. The control communication can be used to correspondingly control the communication mode of power distribution among the power supply modules 30 according to the power supply required by each load 200 selected.

As shown in FIG. 4B, in the first embodiment of the present invention, the second configuration relationship between the power module 30 and the operating unit 41 is that each operating unit 41 controls at least one power switch (SW1, SW2 …SWn). For example, the main controller 400 outputs the control signal Sc1 To control the power switch SW1, output the control signal Sc2 to control the power switch SW2, and output the control signal Scn to control the power switch SWn. Similarly, the control signals Sc1~Scn can be pulse width modulation control signals, which control the duty cycle of each power switch (SW1, SW2...SWn) to control the output voltage of each power module 30. The power switches (SW1, SW2...SWn) are respectively coupled to the main controller 400, and the main controller 400 provides control communication between the power switches (SW1, SW2...SWn). The control communication can be used to correspondingly control the communication mode of power distribution among the power supply modules 30 according to the power supply required by each load 200 selected.

As shown in FIG. 4C, in the first embodiment of the present invention, the third configuration relationship between the power module 30 and the operating unit 41 is: each operating unit 41 is included in the main controller 400 and at least one power module 30 The sub-controller 300 controls at least the power switches (SW1, SW2...SWn). For example, at least one sub-controller 300 receives information about the power required by each load 200 selected by each operating unit 41, and then transmits the information about the power required by each load 200 to the main controller 400, and the main controller 400 according to the received requirements The information output control signal Sc1 of the power supply controls the power switch SW1, the output control signal Sc2 controls the power switch SW2, and the output control signal Scn controls the power switch SWn. Similarly, the control signals Sc1~Scn can be pulse width modulation control signals, which control the duty cycle of each power switch (SW1, SW2...SWn) to control the output voltage of each power module 30. The main controller 400 is coupled to each sub-controller 300 and each power switch (SW1, SW2...SWn), and the main controller 400 provides control communication between each power switch (SW1, SW2...SWn). The control communication can be used to correspondingly control the communication mode of power distribution among the power supply modules 30 according to the power supply required by each load 200 selected.

In order to facilitate the description of the operating principle of the first embodiment of the DC output uninterruptible power supply of the present invention, the following description is given by way of example numerical values, but the present invention is not limited by this. Taking FIG. 1 as an example, when the AC power supply 100 is normal, the AC-DC conversion circuit 10 converts and boosts the voltage of the AC power supply 100 (for example, 110 volts) to 400 volts DC, as the first DC power supply, so that each power supply model The group 30 can receive the first DC power to supply the power required by each load 200. When the battery unit 21 is being charged, the charging unit 23 converts the voltage of the first DC power supply (DC 400 volts, and the rated power that can be provided is 2400 watts) into the charging voltage of the battery unit 21 (for example, DC 48 volts), and The battery cell 21 is charged. When the AC power supply 100 is abnormal, the output voltage of the battery unit 21 is converted by the boost conversion unit 22 and boosted to 400 volts DC, which is used as the second DC power supply, so that each power supply module 30 can receive the second DC power supply to supply each The power required by the load 200 to realize uninterrupted power supply to each load 200.

Furthermore, when the user selects the power supply required by the first load 200 through the operating unit 41 (which can be a DIP switch, a knob, etc.), for example, the power supply voltage (for example, 60 volts DC) and/or the power supply of the first load 200 is selected ( For example, 300 watts). At this time, in conjunction with one of FIGS. 4A to 4C, the main controller 400 and/or the sub-controller 300 receives the information of the power supply required by the first load 200 (ie, the power supply voltage of 60 volts DC). And/or 300 watts of power supply), therefore, the duty cycle of the power switch SW1 of the first power module 30 is controlled so that the output voltage of the first power module 30 is 60 volts and/or the output current is 5 amperes, To supply the power required by the first load 200. Furthermore, if the maximum output power of the first power module 30 is only 150 watts, when an operating unit 41 is adjusted to the required 300 watts corresponding to the first load 200, the main controller 400 and/or the sub-controller 400 The controller 300 can simultaneously call the first power module 30 (150 watts) and the second power module 30 (150 watts) to supply the first load 200 at the same time according to the one operating unit 41, so as to meet the requirements of the first load 200. Requires power supply (300 watts). However, the quantitative relationship among the operating unit 41, the power module 30, and the load 200 to be protected by the present invention is not limited to this.

Furthermore, if there are multiple loads 200, the main controller 400 and/or the sub-controller 300 will receive information about the power supply required by each load 200, and then control the power switches (SW1, SW1, SW2...SWn) is the duty cycle to supply the power supply voltage and/or power supply required by each load 200 selected.

Further, if the total power required by the selected loads 200 exceeds the rated power that can be supplied by the AC-DC conversion circuit 10, the communication between the sub-controllers 300 (as shown in FIG. 4A) and the main control The integration of the load device 400 (as shown in FIG. 4B) or the integration of each sub-controller 300 and the main controller 400 (as shown in FIG. 4C) can obtain information about the power supply required by each load 200. The method of proportionally reducing the power supply is to control the duty cycle of the power switches (SW1, SW2...SWn) of the corresponding power supply module 30 to achieve continuous power supply to each load 200; or, the power supply can be weighted In this way, the duty cycle of the power switch (SW1, SW2...SWn) of the corresponding power module 30 is controlled, so that the load 200 with a higher weight can ensure the required power supply, and the rest of the load 200 obtains part according to the weight. The power required to supply power to each load 200 can be continuously supplied.

Referring to Figures 5 to 6B, Figure 5 is a schematic diagram of the structure of the fourth embodiment of the DC output uninterruptible power supply of the present invention; Figures 6A to 6B are the power factors of the DC output uninterruptible power supply of the present invention Circuit diagram of the correction stage circuit.

As shown in FIG. 5, the fourth embodiment of the DC output uninterruptible power supply of the present invention is substantially the same as the foregoing first embodiment, except that the AC-DC conversion circuit 10 with an isolated topology in the first embodiment is replaced It is a power factor correction stage with a non-isolated topology Compared with the power supply modules 30 in the first embodiment, each power supply module 30’ in the fourth embodiment further includes an isolated topology structure 31 (for cooperation, see FIGS. 8A to 8C)

In the fourth embodiment of the present invention, the charging unit 23 of the charging and discharging module 20 is coupled to the battery unit 21 and an internal DC side of the power factor correction stage circuit 10' (as shown in FIG. 5, the charging unit 23 is coupled to Between the AC input side and the DC output side of the power factor correction stage circuit 10'). Taking the power factor correction stage circuit 10' shown in FIG. 6A as a boost power factor correction stage circuit as an example, the charging unit 23 may be coupled to the output side of the full-wave rectifier circuit (that is, the input side of the boost converter), In order to realize the scheme that the charging unit 23 is coupled to the internal DC side of the power factor correction stage circuit 10'.

6A to 6B are circuit diagrams of the power factor correction stage circuit of the DC output uninterruptible power supply of the present invention. In the fourth embodiment of the DC output uninterruptible power supply of the present invention, the power factor correction stage circuit 10' may be a boost power factor correction stage circuit composed of a full-wave rectifier circuit and a boost converter ( As shown in FIG. 6A), the power factor correction stage circuit 10' can also be a boosted power factor correction stage circuit and further includes an anti-electromagnetic interference filter 12 (as shown in FIG. 6B).

Refer to FIG. 7, which is a circuit block diagram of the power factor correction stage circuit and the configuration of the charging and discharging module of the fifth embodiment of the DC output uninterruptible power supply of the present invention. In the fifth embodiment of the present invention, it is substantially the same as the foregoing fourth embodiment, except that the charging unit 23 of the charging and discharging module 20 is coupled to the battery unit 21 and an AC input side of the power factor correction stage circuit 10' (as shown in FIG. As shown in 7, the charging unit 23 is coupled to the AC power supply 100). When the battery unit 21 is being charged, the charging unit 23 receives the AC power output from the AC power source 100 and converts it into a voltage suitable for charging the battery unit 21. Furthermore, when the AC power source 100 is abnormal, the battery unit 21 outputs The output voltage is boosted by the boost conversion unit 22 to provide a second DC power source, so that each power module 30 receives the second DC power source and converts the second DC power source to provide the power required by each load 200 , In order to realize the uninterrupted power supply to each load 200.

Please refer to FIGS. 8A to 8C, which are circuit block diagrams of the power module and operating unit configuration of the fourth embodiment of the DC output uninterruptible power supply of the present invention. The operating unit 41 and the power module 30 are The control method is similar to the description of the foregoing first embodiment. The difference is that each power supply module 30' in the fourth embodiment further includes an isolated topology compared to each power supply module 30 in the first embodiment. For structure 31, other parts can be referred to the corresponding descriptions in the first embodiment, which will not be repeated here.

During the use of the DC output uninterruptible power supply of any embodiment of the present invention, when the AC power supply 100 is normal, at least one power supply module 30 receives the DC power supply and converts the first DC power supply to provide At least one power source required by the load 200; when the AC power source 100 is abnormal, at least one power module 30 receives the second DC power source and converts the second DC power source to provide at least one power source required by the load 200; in addition, because the user The power supply required by each load 200 can be selected through at least one operating unit 41 (which can be a dip switch, knob, etc.), so that at least one power supply module 30, 30' can convert one of the first DC power supply and the second DC power supply , To provide uninterrupted power supply to at least one load 200; for this, users can freely match different numbers of loads 200, adjust the required power value of each load 200, and freely adjust at least one power supply mode according to the use needs or the needs of each load The relevant electrical values (such as at least one of the voltage value and the current value) output by the group 30, and the safety of the majority of the loads 200 electrically connected to it can be protected in the event of a sudden shutdown of the mains, so as to reduce the size, The purpose of reducing production costs and avoiding hardware damage and data loss due to sudden power interruption.

The above are only detailed descriptions and drawings of the preferred specific embodiments of the present invention, but the features of the present invention are not limited thereto, and are not intended to limit the present invention. The full scope of the present invention should be subject to the following patent applications. All embodiments that conform to the spirit of the patent application of the present invention and similar changes should be included in the scope of the present invention. Anyone familiar with the art in the field of the present invention can easily think of changes or modifications. Covered in the following patent scope of this case.

10: AC to DC conversion circuit

20: Charge and discharge module

21: battery unit

22: Boost conversion unit

23: Charging unit

30: Power module

40: User interface

41: operating unit

100: AC power

200: load

Claims (15)

A DC output uninterruptible power supply includes: an AC-DC conversion circuit coupled to an AC power supply and outputting a first DC power supply; a charging and discharging module outputting a second DC power supply; at least one power supply module Group, coupled to the AC-DC conversion circuit and the charging and discharging module, and receiving one of the first DC power supply and the second DC power supply; and a user operation interface, configured on the at least one power supply module There is at least one operating unit between each load and at least one load; wherein each operating unit makes the at least one power module provide power to each load according to the power required by each load, and each operating unit is controlled by a master The sub-controllers and/or the sub-controllers included in the at least one power module are communicatively coupled to each other to correspondingly control the power distribution among the at least one power modules; wherein, each of the sub-controllers receives one from each of the loads. The power information is transmitted to the main controller, so that the main controller can selectively call a plurality of the power modules at the same time to supply power to one of the loads. For example, the DC output uninterruptible power supply described in item 1 of the scope of patent application, wherein when the AC power is normal, each power module receives the first DC power; when the AC power is abnormal, each of the power modules receives the first DC power; The power module receives the second DC power. In the DC output uninterruptible power supply described in the first item of the scope of patent application, the AC-DC conversion circuit includes an isolated topology coupled to the AC power supply. The DC output uninterruptible power supply according to the first item of the scope of patent application, wherein the charging and discharging module includes: a battery unit; a boost conversion unit, coupled to the battery unit and the at least one power module And a charging unit, coupled to the battery unit and one of an AC input side, a DC output side, and an internal DC side of the AC-DC conversion circuit. The DC output uninterruptible power supply according to the first item of the scope of patent application, wherein each of the power modules includes a step-down circuit with a power switch, and the step-down circuit receives the first DC power supply and the One of the second DC power supplies controls the output voltage of each power supply module. The DC output uninterruptible power supply described in item 5 of the scope of patent application, wherein each of the operating units controls each of the power switches through a main controller or a sub-controller included in each of the power modules, wherein Each of the power switches is respectively coupled to the main controller or each of the sub-controllers, and the main controller or each of the sub-controllers provides control communication between the power switches. The DC output uninterruptible power supply described in item 5 of the scope of patent application, wherein each of the operating units controls each of the power switches through a main controller and a sub-controller included in each of the power modules, wherein , The main controller is coupled to each of the sub-controllers and each of the power switches, and the main controller provides control communication between each of the power switches. For example, the DC output uninterruptible power supply described in item 6 or item 7 of the scope of patent application, wherein the main controller or each sub-controller controls the duty cycle of each power switch by means of pulse width modulation , And then control the output voltage of each power module. A DC output uninterruptible power supply includes: a power factor correction stage circuit coupled to an AC power source and outputting a first DC power source; a charging and discharging module that outputs a second DC power source; at least one power source A module, coupled to the power factor correction stage circuit, and receiving at least one of the first DC power supply and the second DC power supply; and a user operation interface, configured on the at least one power module and the at least one Between the loads, there is at least one operating unit; wherein, each operating unit enables the at least one power module to provide power to each load according to the power required by each load, and each operating unit passes through a main controller and/ Or the sub-controllers included in the at least one power supply module are communicatively coupled to each other to correspondingly control the power distribution among the at least one power supply modules; wherein, each of the sub-controllers receives a power information from each of the loads and It is transmitted to the main controller to enable the main controller to selectively invoke a plurality of the power modules to supply power to one of the loads at the same time. For example, the DC output uninterruptible power supply described in item 9 of the scope of patent application, wherein when the AC power is normal, each power module receives the first DC power; when the AC power is abnormal, each of the power modules receives the first DC power; The power module receives the second DC power. The DC output uninterruptible power supply according to claim 9 of the scope of patent application, wherein the charging and discharging module includes: a battery unit; a boost conversion unit, coupled to the battery unit and the at least one power module ;as well as A charging unit is coupled to the battery unit and one of an AC input side and an internal DC side of the power factor correction stage circuit. The DC output uninterruptible power supply described in the scope of patent application, wherein each of the power modules includes an isolated topological structure coupled to each load, and the isolated topological structure has a power The power switch is coupled to the power factor correction stage circuit. The DC output uninterruptible power supply described in item 12 of the scope of patent application, wherein each of the operating units controls each of the power switches through a main controller or a sub-controller included in each of the power modules, wherein Each of the power switches is respectively coupled to the main controller or each of the sub-controllers, and the main controller or each of the sub-controllers provides control communication between the power switches. The DC output uninterruptible power supply described in item 12 of the scope of patent application, wherein each of the operating units controls each of the power switches through a main controller and a sub-controller included in each of the power modules, wherein , The main controller is coupled to each of the sub-controllers and each of the power switches, and the main controller provides control communication between each of the power switches. Such as the DC output uninterruptible power supply described in item 13 or item 14 of the scope of patent application, wherein the main controller or each sub-controller controls the duty cycle of each power switch by means of pulse width modulation , And then control the output voltage of each power module.

Images