CN213782964U - Uninterrupted power supply device for intelligently controlling direct current output - Google Patents

Abstract

The utility model discloses an uninterrupted power device of intelligent control direct current output, it includes a power conversion integrated circuit, a first switch, a first controller, a direct current/direct current converter, a second controller and a group battery. The first controller generates a first control signal and a second control signal, the second control signal is connected to the power conversion integration circuit, and the first control signal is connected to a second controller arranged in the DC/DC converter. The battery pack is connected with the direct current/direct current converter to form a first power path, the direct current/direct current converter is connected with the power conversion integration circuit to form a second power path, and the battery pack is connected with the power conversion integration circuit to form a third power path. The utility model discloses can provide under the condition of different power supplies in different power sources, control the switching between the different power paths of different power supply states effectively, stable and uninterrupted provides the required DC power supply of DC electrical apparatus load.

Description

Uninterrupted power supply device for intelligently controlling direct current output

Technical Field

The utility model relates to an intelligent control direct current output's uninterrupted power device, especially one kind have a plurality of direct current output socket interfaces, can directly supply the uninterrupted power device of intelligent control direct current output in the required direct current power source of direct current electrical apparatus.

Background

In the prior art, most of the uninterruptible power supply devices are only of the type of power output providing ac output, and are mainly required to be supplied to the ac power type of the commercial power provided by the power company. For the electric appliances commonly used today, for example, electric energy consuming products using dc power such as network video camera, wireless network sharer, WiFi sharer, digital telephone or monitoring video camera using CCTV, if a general uninterruptible power supply is used, it is necessary to connect an Adapter (Adapter) to convert dc into ac at the input end, and then plug the input end into the uninterruptible power supply. Furthermore, there is no uninterruptible power device with multiple dc power outputs, and no uninterruptible power device with multiple dc power outlets is directly provided for the existing products in the market. Therefore, the authors can overcome the above drawbacks.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an intelligent control direct current output's uninterrupted power device, except having general alternating current power supply's output, still possess the required direct current output power supply of direct current load, direct current output power supply, for example, can be including the direct current output power supply of DC3V, DC5V, DC12V, DC15V or DC24V etc. different magnitude of voltage in the practical application to the direct current electrical apparatus load that offers the difference uses. For example, the utility model discloses can provide the required DC power supply of the photographic lens of network monitor, also can provide the required DC power supply of direct current loads such as wireless network router, wiFi share ware, wireless network server and digital telephone. Through the utility model discloses a UPS can reach under the condition that different power sources provided different power supplies, control effectively switching between the different power paths of different power supply states provides the required DC power supply of DC electrical appliances load stably and uninterrupted. The risk that the camera data is lost, the network connection is suddenly interrupted or the digital telephone stops operating due to the interruption of the power supply of the direct current electric appliance load needing to continuously supply the direct current power supply is avoided, and the safety of related digital data processing can be effectively improved.

The utility model discloses an intelligent control direct current output's uninterrupted power device is equipped with a mains supply input, an alternating current power supply output and a set of direct current power supply output, and this set of direct current power supply output comprises a plurality of direct current power supply output, and this intelligent control direct current output's uninterrupted power device is including: the input end of the power conversion integration circuit is connected to the input end of the commercial power supply, and the power conversion integration circuit is provided with an alternating current output end; a first switch, the first end group of the first switch is connected to the input end of the commercial power supply; the second end group of the first switch is connected to the alternating current output end of the power conversion integration circuit; the third end group of the first switch is connected to the output end of the alternating current power supply; the first controller generates a second control signal which is connected with the power conversion integrated circuit; a DC/DC converter having a second power path; the second power path is a path formed by connecting the input end of the DC/DC converter with the power conversion integration circuit; the output end of the DC/DC converter is connected to the output end of the group of DC power supplies; a second controller, which is arranged inside the DC/DC converter, and one end of the second controller is connected to a first control signal in the first controller; the other end of the second controller is connected with a second switch; and a battery pack, the battery pack is connected with the DC/DC converter to form a first power path; the battery pack is connected with the power conversion integrated circuit to form a third power path; and the LED lamps are correspondingly arranged on the side edge of the output end of the direct current/direct current converter.

Further, this intelligent control direct current output's uninterrupted power system still is equipped with: the fuses are correspondingly arranged at the front end of the output end of the direct current/direct current converter and are connected in series; and the resistors are correspondingly configured and are connected with the LED lamps in series.

Further, the DC/DC converter is also internally provided with: the voltage reduction type power conversion circuit is connected with the second controller; the input end of the buck power conversion circuit is connected to the first power path and the second power path; the output end of the voltage reduction type power conversion circuit is the output end of the direct current/direct current converter; and an auxiliary power supply connected with the second controller; the input end of the auxiliary power supply is connected to the first power path and the second power path; and a serial communication interface connected to the second controller and connected to the auxiliary power supply.

Further, the output end of the dc/dc converter includes: the input ends of the at least two direct current output interfaces are connected to the output end of the buck power conversion circuit; the output end of the DC/DC converter is connected to the output end of the group of DC power supplies, and the output end of the voltage reduction type power conversion circuit is connected to the DC power supply output of the at least two DC output interfaces.

The utility model discloses another intelligent control direct current output uninterrupted power device, which is provided with a commercial power supply input end, an alternating current power supply output end and a group of direct current power supply output ends, but is also provided with a direct current power supply input end, wherein the direct current power supply input end is used for connecting a direct current power supply generated by a solar photovoltaic panel; and the battery pack is additionally set to be in an external connection state; this intelligent control direct current output's uninterrupted power system's inside including: the input end of the power conversion integration circuit is connected to the input end of the commercial power supply, and the power conversion integration circuit is provided with an alternating current output end; a first switch, the first end group of the first switch is connected to the input end of the commercial power supply; the second end group of the first switch is connected to the alternating current output end of the power conversion integration circuit; the third end group of the first switch is connected to the output end of the alternating current power supply; the first controller generates a second control signal which is connected with the power conversion integrated circuit; a DC/DC converter having a second power path; the second power path is a path formed by connecting the input end of the DC/DC converter with the power conversion integration circuit; the output end of the DC/DC converter is connected to the output end of the group of DC power supplies; a second controller, which is arranged inside the DC/DC converter, and one end of the second controller is connected to a first control signal in the first controller; the other end of the second controller is connected with a second switch; the battery pack connecting end is connected with the direct current/direct current converter to form a first power path; the battery pack connecting end is connected with the power conversion integrated circuit to form a third power path; and a solar charging controller connected to the first controller, the power conversion integration circuit, the DC/DC converter and the battery pack connection terminal; a third control signal is connected between the solar charging controller and the first controller; and the LED lamps are correspondingly arranged on the side edge of the output end of the direct current/direct current converter.

Further, the solar charging controller is internally provided with: a maximum power tracker for performing the operation of tracking the maximum power of the solar energy; and a pulse width modulation controller for performing a pulse width modulation operation of a power switching circuit of the solar charging controller; wherein, a fourth power path is connected between the solar charging controller and the power conversion integrated circuit; a fifth power path connected between the solar charging controller and the DC/DC converter; a sixth power path is connected between the solar charging controller and the battery pack connection terminal.

Further, the dc/dc converter is provided with: the voltage reduction type power conversion circuit is connected with the second controller; the input end of the buck power conversion circuit is connected to the first power path and the second power path; the output end of the voltage reduction type power conversion circuit is the output end of the direct current/direct current converter; an auxiliary power supply connected with the second controller; the input end of the auxiliary power supply is connected to the first power path and the second power path; and a serial communication interface connected to the second controller and connected to the auxiliary power supply.

Further, the output end of the dc/dc converter includes: the input ends of the at least two direct current output interfaces are connected to the output end of the buck power conversion circuit; the output end of the DC/DC converter is connected to the output end of the group of DC power supplies, and the output end of the voltage reduction type power conversion circuit is connected to the DC power supply output of the at least two DC output interfaces.

For a further understanding of the nature and technical content of the present invention, reference should be made to the following detailed description and accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the invention.

Drawings

FIG. 1 is a schematic diagram of a circuit block connection according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a power path of the utility power supply in the embodiment of the present invention;

fig. 3 is a schematic diagram of a power path in an embodiment of the present invention, in which the battery pack supplies power and the commercial power is not used;

fig. 4 is a schematic diagram of a power path in an embodiment of the present invention, in which the power is supplied by the utility power and the battery pack is not in use;

FIG. 5 is a schematic diagram of a circuit block connection according to another embodiment of the present invention;

fig. 6 is a schematic power path diagram of the commercial power supply and the solar power supply according to another embodiment of the present invention;

fig. 7 is a schematic diagram of a power path for battery power supply and solar power supply without utility power supply according to another embodiment of the present invention;

fig. 8 is a schematic diagram of the power path between the commercial power supply and the solar power supply and the battery pack is inactive in the embodiment of the present invention;

fig. 9 is a schematic diagram of the internal circuit connection of the dc/dc converter according to the embodiment of the present invention.

Detailed Description

The utility model discloses an utensil intelligent control direct current output's uninterrupted power device, the utility model discloses an uninterrupted power device can reach under the situation that different power sources provided different power supplies, controls effectively switching between the different power paths of different power supply states provides the required DC power supply of DC electrical appliances load steadily. The risk that the DC appliance load needing to continuously supply the DC power supply loses the camera data, the network connection is suddenly interrupted or the digital telephone stops operating because of the interruption of the DC power supply is avoided.

Various exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which some exemplary embodiments are shown. The inventive concept may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments set forth herein. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the inventive concept to those skilled in the art. In the drawings, the relationship between a certain part, object or image size and relative size and connection or coupling may be exaggerated for clarity of illustrating the structure of elements; moreover, like numbers refer to like elements throughout.

It should be understood that although the terms: the terms front (side), back (side), above or below, left or right, and the like are used for clearly distinguishing a position of one element from a relative position of another element, or for distinguishing a difference in position between one element and another element, or a difference in relative position between different elements, and are not used for limiting the order or absolute positional relationship presented by the words, serial numbers, or self-meanings. Thus, the left (or front) element discussed below may be referred to as the right (or back) element without departing from the teachings of the present inventive concept; and not necessarily in literal or numerical sequential or sequential relationship; also, the terms "plurality" or "a plurality" may be used herein to describe having multiple elements provided, but these multiple elements are not limited to implementing two, three, or four or more elements in a number representative of the implemented technology. The above description is made in the first place.

Referring to fig. 1, the uninterruptible power device 1 for intelligently controlling DC output according to the present invention is provided with a mains power input terminal, an AC power output terminal (AC O/P) and a set of DC power output terminals (DC O/P), and the uninterruptible power device 1 for intelligently controlling DC output includes a power conversion integration circuit 10, a first switch S1, a first controller 12, a DC/DC converter 20, a second controller 22 and a battery pack 14. In practical applications, the input terminal of the utility power supply is an ac-type utility power supply (ac power source). The input terminal of the integrated power conversion circuit 10 is connected to the input terminal of the mains power supply, and the integrated power conversion circuit 10 has an ac output terminal connected to the first switch S1, and the mains power supply is also directly connected to the first switch S1. The power conversion integrated circuit 10 actually comprises a converter 10a, an inverter 10b and a charger 10c, wherein the converter 10a is used for converting an ac power into a dc power, the inverter 10b is used for inverting the dc power into the ac power, and the charger 10c is used for charging the battery pack 14; in addition, the present invention integrates three circuit switching functions, i.e., the converter 10a, the inverter 10b, and the charger 10c, into a power conversion integrated circuit 10, as shown in fig. 1.

The group of DC power output terminals (DC O/P) actually includes a plurality of different DC output modes, including but not limited to having a plurality of different DC voltage value outputs, or including DC power output interfaces with different connector socket types; that is, the set of DC power output terminals (DC O/P) is not a single DC power output but has a plurality of DC power outputs.

In fig. 1, a first terminal set of the first switch S1 (e.g., the upper left terminal of the first switch S1 in fig. 1) is connected to the mains input terminal, a second terminal set of the first switch S1 (e.g., the lower left terminal of the first switch S1 in fig. 1) is connected to the ac output terminal of the power conversion circuit 10, and a third terminal set of the first switch S1 (e.g., the lower left terminal of the first switch S1 in fig. 1) is connected to the ac output terminal. The first controller 12 of the present invention generates a first control signal a and a second control signal b; the first control signal a is connected to the second controller 22 in the dc/dc converter 20, the second control signal b is connected to the power conversion integration circuit 10, and the first control signal a and the second control signal b are used as the power control signal b for the intelligent control dc output uninterruptible power supply 1 of the present invention, under different input power sources or power supply conditions, correspondingly generate the control signal for different power paths between the ac power source output end and the dc power source output end of the uninterruptible power supply 1, thereby achieving the purpose of providing stable output ac power source and dc power source.

The input end of the dc/dc converter 20 shown in fig. 1 is connected to a first power path X and a second power path Y; the first power path X is formed by connecting the battery pack 14 to the input terminal of the dc/dc converter 20, the second power path Y is formed by connecting the input terminal of the dc/dc converter 20 to the power conversion integration circuit 20, and the output terminal of the dc/dc converter is connected to the set of dc power output terminals. In one embodiment, that is, the output of the DC/DC converter 20 can be the DC power output (DC O/P) of the uninterruptible power device 1. The battery 14 is connected to the dc/dc converter 20 and forms the first power path X, and the battery 14 is connected to the power conversion integrated circuit 10 to form a third power path P. A battery pack connection terminal 14 is included as an input/output interface for connecting the battery pack 14 to the outside.

The second controller 22 is disposed inside the dc/dc converter 20, one end of the second controller 22 is connected to a first control signal a in the first controller 12, and the other end of the second controller 22 is connected to a second switch S2. The second switch S2 is used to provide a switch capable of directly controlling the on/off of the dc power output, and in practical control, the second switch S2 can be a physical button or button switch, or a single-pole switch, to provide the operator with direct choice of turning on the dc power supply of the dc power output or stopping the dc power supply of the dc power output. ON the other hand, the second switch S2 can be controlled by the second controller 22 to directly control the ON (ON) or OFF (OFF) of the second switch S2; of course, the control of the second switch S2 can also be controlled by the first controller 12 via the second controller 22 to indirectly control the ON (ON) or OFF (OFF) of the second switch S2. The first switch S1 is used to provide a stable ac output power to the ac power output terminal, and under different power source conditions, perform and control switching to a source capable of supplying power without interruption and efficiently, thereby preventing the ac power output terminal from power failure.

In the practical manufacturing of the first controller 12 of the present invention, it can be a micro-control chip or a micro-controller of a single chip; or the control function of the first controller 12 can be integrated into a Central Processing Unit (CPU) (not shown) of the ups 1; still alternatively, the first controller 12 itself is the chip of a microcontroller of the uninterruptible power supply 1, that is, the present invention does not limit the manufacturing mode of the first controller 12, and the first controller 12 can further control the power conversion integrated circuit 20, the battery pack 14 and the dc/dc converter 20 to perform the switching operation of different power path transmission under the condition of supplying power or not supplying power from the utility power source. The second controller 22 can also be a single micro-controller chip or a micro-controller, or can be integrated into a switching circuit controller (not shown) of the dc/dc converter 20.

Referring to fig. 2, a description of the power path direction of the power source in the case where the power source is normally supplied by the commercial power source is further described. When the commercial power source normally supplies AC power, the AC output power of the ups 1 is directly supplied by the commercial power source, i.e. the first switch S1 is switched to the first terminal set to supply the AC power required by the AC power output (AC O/P) of the ups 1. Meanwhile, the first controller 12 controls the converter 10a in the power conversion integration circuit 20 to convert the commercial power into the dc power through the second control signal b, and transmits the dc power to the dc/dc converter 20 through the second power path Y, and then controls the second controller 22 through the first control signal a, so that the dc output terminal of the dc/dc converter 20 can output the dc power output type required by the user, such as dc output: there are DC output power supplies with different voltage values such as DC3V, DC5V, DC12V, DC15V or DC24V to meet the needs of users. While the second switch S2 is in an Open (ON) state, such as: network sharer, digital telephone, digital loudspeaker box, digital 3C product, network camera, network monitor and server. On the other hand, in fig. 2, in addition to the first controller 12 controlling the converter 10a in the power conversion integration circuit 20 to convert the commercial ac power into the dc power through the second control signal b, the charger 10c is also controlled to continuously charge the battery pack 14 through the link of the third power path P by the charger 10 c.

Referring to fig. 3, when the utility power fails and stops supplying ac power, the utility model discloses the main power supply source of this uninterruptible power device 1 is then regarded as by the battery pack 14 to the uninterruptible power device 1 of intelligent control dc output. Wherein, the second control signal b of the first controller 12 controls the inverter 10b in the power conversion integration circuit 20 to invert the dc power provided by the battery pack 14 into an AC power, and the dc power of the battery pack 14 is transmitted to the power conversion integration circuit 20 through the third power path P, and then is inverted into an AC power by the inverter 10b and then is output to the AC power output terminal (AC O/P); meanwhile, the first switch S1 switches the output terminal to the second terminal set (e.g., the lower left terminal of the first switch S1 in fig. 1) under the control of the first controller 12 to supply ac power, so as to continuously and continuously supply ac power to some household appliances requiring ac power.

Meanwhile, in fig. 3, the first control signal a of the first controller 12 controls the second controller 22 in the dc/dc converter 20, so as to transmit the dc power of the battery pack 14 to the dc/dc converter 20 through the first power path X, and the second controller 22 further controls the type of the dc power outputted by the output terminal of the dc/dc converter 20, for example, the output dc voltage can be controlled as follows: DC output power supplies with different voltage values such as DC3V, DC5V, DC12V, DC15V or DC 24V. At this time, the second switch S2 is controlled to be ON (ON).

Referring to fig. 4, when the commercial power source is normally supplying power and the battery pack 14 fails to operate, the uninterruptible power device 1 for intelligently controlling DC output of the present invention mainly uses the ac power source of the commercial power as the main power supply source of the uninterruptible power device 1, which is different from the embodiment shown in fig. 2 in that although the battery is abnormal, the second control signal b of the first controller 12 can still transfer the charging energy to the DC/DC converter 20 through the power conversion integration circuit 10 to output the DC power to the DC power output (DC O/P); even in a completely batteryless system, the second control signal b of the present invention can still transfer the charging energy to the DC/DC converter 20 via the power conversion integration circuit 10 to output the DC power to the DC power output (DC O/P).

Fig. 5 shows another embodiment of the present invention, which is an application embodiment of using the uninterruptible power device 1 in fig. 1 to solar photovoltaic energy as one of the power sources. That is, the embodiment disclosed in fig. 5 can be actually used as a solar inverter 2 with a non-power-off function, and in this case, the name of the non-power-off device 1 can be directly and separately changed into the solar inverter 2. Because the main circuit wherein does not change, except by commercial power supply alternating current power supply, can also pass through a solar photovoltaic device to the direct current power supply input that provides the direct current configuration has two kinds of different input power, more needs to have this moment the utility model discloses an intelligent control effect lets different power input do effectual use, provides direct current power supply output and the alternating current power supply output that has the characteristic of not cutting off the power supply. In the embodiment of the solar inverter 2 shown in fig. 5, a commercial power input terminal, an ac power output terminal and a set of dc power output terminals are also provided, but the solar inverter 2 further includes a dc power input terminal for connecting a dc power generated by a solar photovoltaic panel; and the battery pack 14 of fig. 1 is additionally set in an externally connected state, a battery pack connection terminal 14a is provided.

The solar inverter 2 of the embodiment of fig. 5 also includes: the power conversion integrated circuit 10, the first switch S1, the first controller 12, the dc/dc converter 20, the second controller 22, the battery pack connection terminal 14a and the solar charging controller 30; the battery pack connection terminal 14a is externally connected to the battery pack 14. The solar inverter 2 is different from the uninterruptible power supply 1 in that a solar charging controller 30 is provided, and the solar charging controller 30 is connected to the first controller 12, the power conversion integration circuit 10, the dc/dc converter 20, and the battery pack connection terminal 14a at the same time. Furthermore, a third control signal c is connected between the solar charging controller 30 and the first controller; and a fourth power path Q connected between the solar charging controller 30 and the power conversion integrated circuit 10, a fifth power path R connected between the solar charging controller 30 and the dc/dc converter 20, and a sixth power path Z connected between the solar charging controller 30 and the battery pack connection terminal 14 a. The interconnection relationship among the power conversion integrated circuit 10, the first switch S1, the first controller 12, the dc/dc converter 20, the second controller 22, and the battery connection terminal 14a in the solar inverter 2 is basically the same as that of the uninterruptible power supply 1 in fig. 1, and a description thereof will not be repeated.

The solar charging controller 30 in fig. 5 includes a maximum power tracker 32(MPPT) and a pulse width modulation controller 34(PWM), wherein the maximum power tracker 32 is used for performing the maximum solar power tracking operation of the solar charging controller 30; the pwm controller 34 is used to perform pwm operation of the power switch circuit of the solar charging controller 30.

Referring to fig. 6, when the different power sources are all normally powered, i.e. the commercial power is normally supplying the AC power, and the sunlight power is normally supplying the dc power, the AC output power of the solar inverter 2 is directly supplied by the commercial power, i.e. the first switch S1 is switched to the first terminal set to supply the AC power required by the AC power output terminal (AC O/P) of the solar inverter 2. Meanwhile, the first controller 12 controls the converter 10a in the power conversion and integration circuit 20 to convert the commercial power ac power into the dc power through the second control signal b, and then transmits the dc power to the dc/dc converter 20 through the second power path Y, and then controls the second controller 22 through the first control signal a to enable the dc output terminal of the dc/dc converter 20 to output the dc power output type required by the user, such as dc output: there are DC output power supplies with different voltage values such as DC3V, DC5V, DC12V, DC15V or DC24V to meet the needs of users. While the second switch S2 is in an Open (ON) state, such as: network sharer, digital telephone, digital loudspeaker box, digital 3C product, network camera, network monitor and server. In addition, in fig. 6, in addition to the first controller 12 controlling the converter 10a in the power conversion integration circuit 20 to convert the commercial ac power into the dc power through the second control signal b, the charger 10c is also controlled to further transmit the electric power through the link of the third power path P, so that the charger 10c continuously charges the battery pack 14.

Importantly, in fig. 6, the first controller 12 further controls the solar charging controller 30 to adjust the DC input power (DC I/P) generated by the solar photovoltaic device to the DC power type required by the DC/DC converter 20 according to the third control signal c, and further controls the second controller 22 through the first control signal a, so that the DC/DC converter 20 can continuously output the DC power through the transmission of the sixth power path Z, and the second switch S2 is turned ON (ON). Therefore, the direct current output power can be stably provided for the electric appliance products with the required direct current load type.

In fig. 7, when the utility power fails and stops supplying ac power, the solar inverter 2 for intelligently controlling DC output of the present invention uses the DC input power (DC I/P) provided by the battery pack 14 and the solar photovoltaic device as the main power supply source of the solar inverter 2. Wherein, the second control signal b of the first controller 12 controls the inverter 10b in the power conversion integration circuit 20 to invert the dc power provided by the battery pack 14 into an AC power, and the dc power of the battery pack 14 is transmitted to the power conversion integration circuit 20 through the third power path P, and then is inverted into an AC power by the inverter 10b and then is output to the AC power output terminal (AC O/P); meanwhile, the first switch S1 switches the output terminal to the second terminal set (e.g., the lower left terminal of the first switch S1 in fig. 1) under the control of the first controller 12 to supply ac power, so as to continuously and continuously supply ac power to some household appliances requiring ac power. In fig. 7, the first control signal a of the first controller 12 controls the second controller 22 of the dc/dc converter 20, so as to transmit the dc power of the battery pack 14 to the dc/dc converter 20 via the first power path X, and the second controller 22 further controls the type of the dc power outputted by the output terminal of the dc/dc converter 20, for example, the output dc voltage can be controlled as follows: DC output power supplies with different voltage values such as DC3V, DC5V, DC12V, DC15V or DC 24V. At this time, the second switch S2 is controlled to be ON (ON).

In fig. 7, the first controller 12 further controls the solar charging controller 30 to adjust the DC input power (DC I/P) generated by the solar photovoltaic device to the DC power type required by the DC/DC converter 20 according to the third control signal c, and further controls the second controller 22 through the first control signal a, so that the DC/DC converter 20 can continuously output the DC power through the transmission of the sixth power path Z, and the second switch S2 is turned ON (ON), so as to stably provide the DC output power for the electrical product with the required DC load type.

As shown in fig. 8, when the commercial power source is supplying power normally and the solar photovoltaic device is also supplying power normally, and the battery pack 14 fails to operate, the solar inverter 2 for intelligently controlling DC output of the present invention uses the ac power source of the commercial power and the DC power source of the solar photovoltaic device as the main power source of the solar inverter 2, which is different from the embodiment shown in fig. 6 in that although the battery is abnormal, the second control signal b of the first controller 12 can still transfer the charging energy to the DC/DC converter 20 through the power conversion integration circuit 10 to output the DC power to the DC power output (DC O/P); even in a completely batteryless system, the second control signal b of the present invention can still transfer the charging energy to the DC/DC converter 20 via the power conversion integration circuit 10 to output the DC power to the DC power output (DC O/P).

In fig. 8, the first controller 12 further controls the solar charging controller 30 to adjust the DC input power (DC I/P) generated by the solar photovoltaic device to the DC power type required by the DC/DC converter 20 according to the third control signal c, and further controls the second controller 22 according to the first control signal a, so that the DC/DC converter 20 can continuously output the DC power, and the second switch S2 is in an ON (ON) state, so as to stably provide the DC output power for the electrical appliance with the required DC load.

In the above description of the embodiments of fig. 6 to 8, the DC input power (DC I/P) of the solar photovoltaic power is controlled to be used as an auxiliary DC power output (DC O/P), and therefore, the paths of the fourth power path Q and the fifth power path R are not described. However, if the solar photovoltaic apparatus with a high power dc output power is used in an embodiment, such as a solar photovoltaic power plant, through the fourth power path Q, the dc power of the solar photovoltaic apparatus can also continuously supply AC power to the AC power output (AC O/P) through the inversion function of the power conversion integration circuit 10; the battery pack 14 is charged directly from the dc power supply of the solar photovoltaic device through the fifth power path P, or the battery pack 14 is continuously charged through the charging function of the power conversion integration circuit 10. That is, when the electric energy or power of the solar photovoltaic apparatus of the present invention is large enough to be supplied to the alternating current power supply (AC O/P) and to charge the battery pack 14, the alternating current power supply output and the battery pack charging operation can be simultaneously supplied in addition to the direct current power supply required for the direct current load electric appliance.

Fig. 9 is a schematic diagram of the internal circuit connection of the dc/dc converter 20 according to the present invention. The dc/dc converter 20 is provided with a buck power conversion circuit 26, an auxiliary power supply 24, a serial communication interface 23, and at least two dc output interfaces OP1 and OP 2. The buck power conversion circuit 26 is connected to the second controller 22; the input end of the buck power conversion circuit 26 is connected to the first power path X and the second power path Y, and further connected to the sixth power path Z, that is, the position of the dc input indicated in fig. 9, which mainly receives the power transmission function of the first power path X, the second power path Y, and the sixth power path Z, and the output end of the buck power conversion circuit 26 can be the output end of the dc/dc converter 20, which actually has a plurality of dc outputs, and then further connected to sockets with different dc output types. In the practical application, the step-down power conversion circuit 26 is a Buck Converter, which is a circuit topology of the Buck Converter, and the utility model discloses not use this as the limit. The Auxiliary Power Supply 24(Auxiliary Power Supply) is connected to the second controller 22; the input terminal of the auxiliary power supply 24 is connected to the input terminal of the buck power conversion circuit 26, i.e. to the dc input shown in fig. 9, which is connected to the first power path X and the second power path Y. The serial communication interface 23 is connected to the second controller 22 and is connected to the auxiliary power supply 24. In fig. 9, four sets of dc output ports are disclosed, namely, a first dc output port OP1, a second dc output port OP2, a third dc output port OP3 and a fourth dc output port OP 4. In practical applications, the present invention has at least two dc output interfaces (also referred to as any two of OP1 to OP 4), and the input ends of the at least two dc output interfaces are connected to the output end of the buck power conversion circuit 26; further, the aforementioned output terminal of the dc/dc converter 20 is connected to the set of dc power output terminals outputted from the uninterruptible power device 1 or the solar inverter 2, that is, the output terminal of the buck power conversion circuit 26 is actually connected to the dc power output terminals of the first to fourth dc output interfaces OP1-OP 4.

In practical implementation, the first to fourth dc output interfaces OP1-OP4 are dc sockets or circular sockets with 12V, 15V or 5V dc supplied by an Adapter, and are provided for different dc electrical loads. In one embodiment, the first to fourth fuses F1 to F4 are respectively and correspondingly connected in series between the first to fourth dc output ports OP1 to OP4 and the output end of the buck power conversion circuit 26 to protect the circuit output of the dc/dc converter 20 from overcurrent or overload, i.e., the first to fourth fuses F1 to F4 are correspondingly disposed at the front end of the output end of the dc/dc converter and are connected in series. In another embodiment, the first to fourth dc output ports OP1-OP4 are respectively connected in parallel with the first to fourth LED lamps L1-L4 for displaying whether the dc outputs of the first to fourth dc output ports OP1-OP4 are working or not. The first-fourth LED lamps L1-L4 are disposed on the sides of the first-fourth dc output ports OP1-OP4 of the output terminal of the dc/dc converter 20. Further, the first to fourth LED lamps L1 to L4 are respectively connected in series with first to fourth resistors R1 to R4, as shown in fig. 9.

To sum up, the utility model discloses well intelligent control direct current output's uninterrupted power device can reach under the situation that different power sources provided different power supplies, no matter be only mains power supply, or have commercial power and solar power supply, or only have solar energy, when the electric energy that the person only left the group battery even more supplies, the utility model discloses all can control effectively switching between the different power paths of different power supply states except continuously providing alternating current power supply, still can be stable and uninterrupted provides the required DC power supply of direct current electrical apparatus load. The risk that the DC appliance load needing to continuously supply DC power, such as a network camera or a WiFi wireless sharer, loses camera data, network connection is suddenly interrupted or a digital telephone stops operating due to the interruption of the DC power supply is avoided. Obviously, the technical content of the utility model has extremely strong patent application requirements.

The above disclosure is only a preferred and practical embodiment of the present invention, and is not intended to limit the claims of the present invention, so that all the equivalent technical changes made by using the contents of the specification and the drawings of the present invention are included in the claims of the present invention.

Claims (8)

1. The utility model provides an intelligent control direct current output's uninterrupted power device, its characterized in that, this intelligent control direct current output's uninterrupted power device is equipped with a mains supply input, an alternating current power supply output and a set of direct current power supply output, and this set of direct current power supply output comprises a plurality of direct current power supply output, and this intelligent control direct current output's uninterrupted power device is including:

the input end of the power conversion integration circuit is connected to the input end of the commercial power supply, and the power conversion integration circuit is provided with an alternating current output end;

a first switch, the first end group of the first switch is connected to the input end of the commercial power supply; the second end group of the first switch is connected to the alternating current output end of the power conversion integration circuit; the third end group of the first switch is connected to the output end of the alternating current power supply;

the first controller generates a second control signal which is connected with the power conversion integrated circuit;

a DC/DC converter having a second power path; the second power path is a path formed by connecting the input end of the DC/DC converter with the power conversion integration circuit; the output end of the DC/DC converter is connected to the output end of the group of DC power supplies;

a second controller, which is arranged inside the DC/DC converter, and one end of the second controller is connected to a first control signal in the first controller; the other end of the second controller is connected with a second switch; and

the battery pack is connected with the direct current/direct current converter to form a first power path; the battery pack is connected with the power conversion integrated circuit to form a third power path;

and the LED lamps are correspondingly arranged on the side edge of the output end of the direct current/direct current converter.

2. The device according to claim 1, further comprising:

the fuses are correspondingly arranged at the front end of the output end of the direct current/direct current converter and are connected in series; and

and the resistors are correspondingly configured and are connected with the LED lamps in series.

3. The device according to claim 1, wherein the dc/dc converter further comprises:

the voltage reduction type power conversion circuit is connected with the second controller; the input end of the buck power conversion circuit is connected to the first power path and the second power path; the output end of the voltage reduction type power conversion circuit is the output end of the direct current/direct current converter; and

an auxiliary power supply connected with the second controller; the input end of the auxiliary power supply is connected to the first power path and the second power path;

and a serial communication interface connected to the second controller and connected to the auxiliary power supply.

4. The device according to claim 3, wherein the output terminal of the DC/DC converter comprises:

the input ends of the at least two direct current output interfaces are connected to the output end of the buck power conversion circuit;

the output end of the DC/DC converter is connected to the output end of the group of DC power supplies, and the output end of the voltage reduction type power conversion circuit is connected to the DC power supply output of the at least two DC output interfaces.

5. The uninterrupted power device for intelligently controlling the direct current output is characterized by being provided with a mains supply input end, an alternating current power supply output end and a group of direct current power supply output ends, and also being provided with a direct current power supply input end, wherein the direct current power supply input end is used for being connected with a direct current power supply generated by a solar photovoltaic panel; and the battery pack is additionally set to be in an external connection state; this intelligent control direct current output's uninterrupted power system's inside including:

the input end of the power conversion integration circuit is connected to the input end of the commercial power supply, and the power conversion integration circuit is provided with an alternating current output end;

a first switch, the first end group of the first switch is connected to the input end of the commercial power supply; the second end group of the first switch is connected to the alternating current output end of the power conversion integration circuit; the third end group of the first switch is connected to the output end of the alternating current power supply;

the first controller generates a second control signal which is connected with the power conversion integrated circuit;

a DC/DC converter having a second power path; the second power path is a path formed by connecting the input end of the DC/DC converter with the power conversion integration circuit; the output end of the DC/DC converter is connected to the output end of the group of DC power supplies;

a second controller, which is arranged inside the DC/DC converter, and one end of the second controller is connected to a first control signal in the first controller; the other end of the second controller is connected with a second switch;

the battery pack connecting end is connected with the direct current/direct current converter to form a first power path; the battery pack connecting end is connected with the power conversion integrated circuit to form a third power path; and

a solar charging controller connected to the first controller, the power conversion integration circuit, the DC/DC converter and the battery pack connection terminal; a third control signal is connected between the solar charging controller and the first controller;

and the LED lamps are correspondingly arranged on the side edge of the output end of the direct current/direct current converter.

6. The device according to claim 5, wherein the solar charging controller comprises:

a maximum power tracker for performing the operation of tracking the maximum power of the solar energy; and

a PWM controller for performing a PWM operation of a power switching circuit of the solar charging controller;

wherein, a fourth power path is connected between the solar charging controller and the power conversion integrated circuit; a fifth power path connected between the solar charging controller and the DC/DC converter; a sixth power path is connected between the solar charging controller and the battery pack connection terminal.

7. An intelligent dc output uninterrupted power supply according to claim 5, wherein the dc/dc converter comprises:

the voltage reduction type power conversion circuit is connected with the second controller; the input end of the buck power conversion circuit is connected to the first power path and the second power path; the output end of the voltage reduction type power conversion circuit is the output end of the direct current/direct current converter;

an auxiliary power supply connected with the second controller; the input end of the auxiliary power supply is connected to the first power path and the second power path; and

and a serial communication interface connected to the second controller and connected to the auxiliary power supply.

8. The device according to claim 7, wherein the output terminal of the DC/DC converter comprises:

the input ends of the at least two direct current output interfaces are connected to the output end of the buck power conversion circuit;

the output end of the DC/DC converter is connected to the output end of the group of DC power supplies, and the output end of the voltage reduction type power conversion circuit is connected to the DC power supply output of the at least two DC output interfaces.

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