CN211089461U - Multi-voltage-level direct-current power supply device and power supply system - Google Patents

Abstract

The utility model provides a multivoltage level DC power supply unit and power supply system relates to DC power supply's technical field, and the device includes: the alternating current is converted into first-level direct current through the rectifying unit, the first-level direct current is converted into second-level direct current through the embedded unit connected with the output end of the rectifying unit, and the first-level direct current and the second-level direct current are output through the output unit, so that the technical problems of complex power supply architecture structure and excessive hardware equipment in the prior art in a C2 communication machine room of an electric system are solved, and the beneficial effects of simplifying the structure, reducing the cost, facilitating maintenance and improving the reliability are achieved.

Description

Multi-voltage-level direct-current power supply device and power supply system

Technical Field

The utility model belongs to the technical field of the DC power supply technique and specifically relates to a multi-voltage level DC power supply unit and power supply system are related to.

Background

Along with the increasing requirements on the reliability of the operation and service support of the IT equipment of the electric Power machine room, the requirements on the Power Supply of the machine room are also increasing, the traditional UPS (uninterruptible Power Supply) Power Supply mode continuously exposes the defects of the UPS (uninterruptible Power Supply) Power Supply mode due to the complex Power Supply topology and the stability problem of the inverter in practical application, the Power Supply of the IT equipment is often interrupted due to Power failure, the maintainability is poor, the efficiency is low, the energy consumption is high, and the Power Supply reliability cannot be effectively improved. And the high-voltage direct current power supply (HVDC) can convert 380V alternating current into 240V high-voltage direct current, and can directly supply power to IT equipment through a storage battery, so that the reliability of power supply of a machine room power supply can be improved.

At present, because of the small load capacity of a C2-type communication machine room in a power system, a common power supply mode of two power supplies, namely a UPS alternating current power supply and a communication storage battery power supply, is adopted to provide two power supply requirements of 220V and 48V. However, two sets of power supply systems including storage batteries are provided for the two power supply modes, so that the problems of complicated structure of a power supply architecture, excessive hardware equipment, inconvenience in maintenance, low reliability and the like exist in a C2 computer room.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a multivoltage level DC power supply unit and power supply system to alleviate the technical problem that the structure of power supply framework is complicated in the C2 class computer lab that exists among the prior art, the maintenance difficulty that hardware equipment too much leads to, the reliability is low.

In a first aspect, an embodiment provides a multi-voltage-level dc power supply apparatus, including: the device comprises a rectifying unit, an embedded unit and an output unit; the rectifying unit is used for converting alternating current into first-grade direct current; the embedded unit is connected with the output end of the rectifying unit and is used for converting the first-level direct current into a second-level direct current; the output unit comprises a first-level output unit and a second-level output unit, wherein the input end of the first-level output unit is connected with the output of the rectifying unit and is used for outputting the first-level direct current; and the input end of the second-level output unit is connected with the output end of the embedded unit and is used for outputting the second-level direct current.

In an alternative embodiment, the method further comprises: an alternating current inlet wire unit; and the alternating current inlet wire unit is connected with the input end of the rectifying unit and is used for providing alternating current input for the rectifying unit.

In an alternative embodiment, the method further comprises: a power distribution unit; the power distribution unit comprises an alternating current power distribution unit and a direct current power distribution unit, and the alternating current power distribution unit is connected with the output end of the alternating current inlet wire unit.

In an alternative embodiment, the method further comprises: a battery cell; and the battery unit is connected with the embedded unit and the input ends of the first-level output unit and used for supplying power to the output unit when the alternating current stops being input.

In an alternative embodiment, the battery cell comprises: the battery switch box is used for controlling the connection and disconnection of the battery unit and the output unit.

In an alternative embodiment, the method further comprises: the monitoring unit comprises a main monitor, a current monitoring sensor and a switch state monitoring sensor; the current monitoring sensor is used for collecting current information and transmitting the current information to the main monitor; the switch state monitoring sensor is used for acquiring state information of the battery switch box and transmitting the state information of the battery switch box to the main monitor.

In an alternative embodiment, the method further comprises: and the insulation monitoring unit is connected with the monitoring unit and used for detecting the insulation state of the first-level output unit and transmitting the insulation state of the first-level output unit to the main monitor.

In an alternative embodiment, the method further comprises: a cabinet, the cabinet comprising: a front door, a side door, a rear door, a top plate and a bottom plate; the rectification unit, the embedded unit, the output unit and the power distribution unit are all arranged inside the cabinet, and the monitoring unit is arranged on a front door of the cabinet.

In an optional embodiment, the cabinet further includes a battery rack, the battery is disposed on the battery rack, and the battery switch box is disposed on two sides of the battery rack.

In a second aspect, embodiments provide a power supply system, including the multi-voltage-class dc power supply apparatus of any one of the foregoing embodiments.

The embodiment of the application brings the following beneficial effects:

the utility model provides a multivoltage level DC power supply unit and power supply system, the device includes: the alternating current is converted into first-level direct current through the rectifying unit, the first-level direct current is converted into second-level direct current through the embedded unit connected with the output end of the rectifying unit, and the first-level direct current and the second-level direct current are output through the output unit, so that the technical problems of complex power supply architecture structure and excessive hardware equipment in the prior art in a C2 communication machine room of an electric system are solved, and the beneficial effects of simplifying the structure, reducing the cost, facilitating maintenance and improving the reliability are achieved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a conventional UPS mode for supplying power to IT equipment;

fig. 2 is a schematic structural diagram of a multi-voltage-class dc power supply device according to an embodiment of the present invention;

fig. 3 is a schematic diagram of a multi-voltage-class dc power supply device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of another multi-voltage-class dc power supply apparatus according to an embodiment of the present invention;

fig. 5 is a front view of an appearance of a multi-voltage-class dc power supply apparatus according to an embodiment of the present invention;

fig. 6 is a front view of the multi-voltage level dc power supply device according to an embodiment of the present invention;

fig. 7 is a rear view of the multi-voltage level dc power supply device according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Some embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

With the increasing reliability requirements for the operation and service support of the IT equipment in the electric Power equipment room, the requirement for the Power Supply of the equipment room is also increasing, and as a conventional Uninterruptible Power Supply (UPS) Power Supply mode shown in fig. 1 has a complex Power Supply topology and a stability problem in an inverter, the Power Supply of the IT equipment is often interrupted due to a Power failure in practical application, and the maintainability is poor, the efficiency is low, the energy consumption is high, and the Power Supply reliability cannot be effectively improved. And the high-voltage direct current power supply (HVDC) can convert 380V alternating current into 240V high-voltage direct current, and can directly supply power to IT equipment through a storage battery, so that the reliability of power supply of a machine room power supply can be improved.

At present, because of the small load capacity of a C2-type communication machine room in a power system, a common power supply mode of two power supplies, namely a UPS alternating current power supply and a communication storage battery power supply, is adopted to provide two power supply requirements of 220V and 48V. However, two power supply modes need to be provided with two power supply systems including a storage battery, so that the power supply architecture of the C2 computer room is complex in structure, low in reliability, too many in hardware equipment and inconvenient to maintain.

In order to solve the existing problem of power supply of a C2-class communication machine room of an electric power system, overcome the defect that the traditional UPS power supply technology and an alternating current power supply and a direct current power supply coexist, improve the reliability and maintainability of the power supply of the machine room power supply and reduce the energy consumption, the embodiment of the application provides a multi-voltage-class direct current power supply device and a power supply system. In order to facilitate understanding of the present embodiment, a detailed description is first provided for a multi-voltage-class dc power supply apparatus provided in the embodiments of the present application.

Referring to fig. 2, a schematic diagram of a multi-voltage-level dc power supply apparatus 200 includes: a rectifying unit 210, an embedded unit 220, and an output unit; the rectifying unit 210 is configured to convert an alternating current into a first-level direct current; the embedded unit 220 is connected to the output end of the rectifying unit 210, and is configured to convert the first-level dc power into a second-level dc power; the output unit comprises a first-level output unit 231 and a second-level output unit 232, wherein the input end of the first-level output unit 231 is connected with the output of the rectifying unit 210 and is used for outputting a first-level direct current; the input terminal of the second-stage output unit 232 is connected to the output terminal of the embedded unit 220, and is configured to output a second-stage dc power.

Wherein the first stage dc power may be 240V dc power and the second stage dc power may be 48V dc power. Generally, the rectifying unit may include a circuit breaker, a fuse, and rectifier modules, for example, as shown in fig. 3, both ends of each rectifier module are connected with a 40A input circuit breaker and an 80A output protection fuse, respectively; the rectifying unit can be provided with a backup, the rectifying unit shown in fig. 3 is composed of 4 rectifier modules, and when a single module fails, the work of other modules is not influenced, so that the stability and the reliability of the device are further improved.

Further, the embedded unit may comprise a DC/DC module for converting the first level direct current into the second level direct current. The DC/DC module can comprise a DC/DC converter and a 16A breaker, and the embedded unit can be provided with a monitor.

Further, the first-stage output unit can be used for 240V direct current output, the second-stage output unit can be used for 48V direct current output, and both the first-stage output unit and the second-stage output unit can be connected with a load and supply power to the connected load. The load may be an IT-class (IT) computer device, or the like.

The output units may include multiple circuit breakers, for example, the first-level output unit may include a 20-way 32A2P circuit breaker, and the second-level output unit may include a 4-way 10A circuit breaker, which are respectively used for supplying power to IT-type loads.

Referring to fig. 3 specifically, for example, the rectifying unit converts ac power into 240V dc power, the output end of the rectifying unit is connected to the positive and negative buses of the 240V dc power, and the first-stage output unit is connected to the 240V dc power from the positive and negative buses to provide 240V dc power for the IT load; the embedded unit is connected with 240V direct current from the positive bus and the negative bus, and after the 240V direct current is converted into 48V direct current through the DC/DC module, the 48V direct current is provided for IT loads through the second-level output unit.

According to the multi-voltage-level direct-current power supply device, alternating current is converted into first-level direct current through the rectifying unit, the first-level direct current is converted into second-level direct current through the embedded unit connected with the output end of the rectifying unit, the first-level direct current and the second-level direct current are output through the output unit, the technical problems that a power supply architecture in the prior art in an electric power system C2 communication machine room is complex in structure, too many in hardware equipment and many in faults are solved, and the beneficial effects that the structure is simplified, the cost is reduced, the maintenance is convenient and the reliability is improved are achieved.

In some embodiments, the multi-voltage level dc power supply apparatus 200 further comprises: a battery cell 240; the battery unit 240 is connected to the embedded unit 220 and the input terminals of the first-level output unit 231, and is used to supply power to the output unit when the input of the alternating current is stopped.

The battery units can be a plurality of groups, and the plurality of groups of battery units are connected with the embedded unit and the input end of the first-level output unit, namely, a bus or a cable connected with the output end of the rectifying unit. When alternating current is input, the multiple groups of battery units can be charged through 240V direct current output by the rectifying unit; the plurality of sets of battery cells may supply power to the embedded unit and the first-class output unit when the input of the alternating current is stopped.

Referring to fig. 4, in some embodiments, battery cell 240 includes: a battery switch box 241 for controlling connection and disconnection of the battery unit to and from the output unit, and a battery 242.

The battery switch box can comprise a 200A molded case circuit breaker, the batteries can be storage batteries, for example, two groups of 240V and 100Ah lead-acid storage batteries can bear the IT-type load of 30kw at most, the power standby time is 1 hour, the storage batteries are connected to the load end, the storage batteries can directly supply power for the IT load when alternating current power failure or system failure occurs, the availability of the storage batteries is 100%, and the reliability of power supply of a machine room power supply is greatly improved.

The multi-voltage-level direct-current power supply device provided by the embodiment can directly supply power to IT equipment through the battery, and compared with the traditional UPS power supply mode, the multi-voltage-level direct-current power supply device omits the inversion process of an inverter, simplifies the power supply structure, reduces fault nodes, improves the reliability of power supply of a machine room power supply, improves the electric energy conversion efficiency, and reduces the energy consumption. In addition, the battery unit can directly supply power for the IT load when alternating current power failure or system failure occurs, and the reliability of power supply of a machine room power supply is greatly improved.

In some embodiments, the multi-voltage level dc power supply apparatus 200 further includes the following structure as shown in fig. 4: an ac inlet line unit 250; the ac incoming line unit 250 is connected to an input terminal of the rectifying unit 210, and is used for providing an ac input to the rectifying unit 210. The ac inlet unit may be used to input three-phase ac power, and the ac inlet unit may include an ac multifunctional meter, a circuit breaker, an indicator light, and the like, and a specific embodiment is shown in fig. 3.

In some embodiments, the multi-voltage level dc power supply further includes: a power distribution unit; the power distribution unit comprises an alternating current power distribution unit and a direct current power distribution unit.

Wherein, exchange the distribution unit can be connected respectively with the output of exchanging the inlet wire unit and the input of rectifier unit, exchange the distribution unit and can include: circuit breaker, lightning protection device, fuse and relevant binding post of drawing forth.

In some embodiments, the multi-voltage level dc power supply apparatus 200 further comprises: a monitoring unit 260 including a main monitor, a current monitoring sensor and a switch state monitoring sensor; the current monitoring sensor is used for collecting current information and transmitting the current information to the main monitor; the switch state monitoring sensor is used for acquiring state information of the battery switch box and transmitting the state information of the battery switch box to the main monitor.

The main monitor may be a ZHM10 main monitor, and is configured to receive information collected by the current monitoring sensor and the switch state monitoring sensor, and send the information to the background for monitoring. The monitoring unit can be connected in a specific way as shown in fig. 3, and the ZHM10 main monitor can be connected with an ac multifunctional meter of an ac incoming line unit for monitoring. The switch state monitoring sensor can collect the state information of the battery switch box, can also collect the state information of other switches in the circuit, and transmits the state information of the switches to the main monitor.

In some embodiments, the multi-voltage level dc power supply further includes: and the insulation monitoring unit is connected with the monitoring unit and used for detecting the insulation state of the first-level output unit and transmitting the insulation state of the first-level output unit to the main monitor. The insulation detection unit is arranged in a circuit where the first-level output unit is located and used for detecting the insulation state of the first-level output unit in the circuit and sending the insulation state to the monitoring unit so as to guarantee safety.

The input end of the first-level output unit is connected with the output of the rectifying unit and used for outputting first-level direct current.

The rectifying unit 210, the power distribution unit, the monitoring unit 260, the insulation monitoring unit, the battery switch box 241, and the battery 242 are connected by a cable or a bus. In addition, the device adopts the modularized design, and rectifier module efficiency reaches more than 95%, and has the dormancy function, can effectively reduce the energy consumption.

In some embodiments, the multi-voltage level dc power supply further includes: a cabinet, the cabinet comprising: a front door, a side door, a rear door, a top plate and a bottom plate; the rectification unit, the embedded unit, the output unit and the power distribution unit are all arranged inside the cabinet, and the monitoring unit is arranged on a front door of the cabinet.

The cabinet can be an indoor cabinet, the protection grade of the cabinet can reach IP20, people can be prevented from contacting parts inside the electric appliance, and foreign objects with medium size (the diameter is larger than 12.5mm) can be prevented from invading.

In some embodiments, the cabinet further includes a battery rack, the battery is disposed on the battery rack, and the battery switch box is disposed on two sides of the battery rack.

For example, referring to the external views of the multi-voltage level dc power supply apparatus shown in fig. 5 to 7, fig. 5 provides a front view of the external view of the multi-voltage level dc power supply apparatus. A monitor display opening is formed in the front door of the cabinet, an alternating current multifunctional meter display opening and a 240V module inserting frame are arranged, wherein the 240V module inserting frame can be used for placing four 240V and 50A rectifier modules.

Fig. 6 provides a front view of a multi-voltage class dc power supply opening door illustrating the cabinet interior including: the circuit comprises an alternating current input unit (comprising 1 160A/3P switch), a 240V module switch, a 48V embedded unit (comprising 2 48V modules), a 48V module switch, a 48V lightning protector, a 48V load output (comprising 4 10A/1P switches) and 4 240V modules.

Fig. 7 provides a door open rear view of a multi-voltage class dc power supply illustrating the cabinet interior including: 2-way 200A battery fuse, 240V load output (including 20-way 32A/2P switch), and module protection fuse.

In the specific example shown in fig. 5-7, the multi-voltage class dc power supply integrates 240V and 48V dc power supplies in an integrated cabinet: the 48V unit is embedded in the cabinet, is connected from a 240V direct current bus, outputs 48V direct current power supply through DC/DC conversion, shares one set of storage battery, and saves cost.

According to the multi-voltage-level direct-current power supply device, the monitoring unit is mounted on the door plate, the rectifying unit is mounted at the lower portion of the cabinet, the alternating-current and direct-current power distribution units and the 48V embedded unit are mounted in the front door of the cabinet, the monitor adopts a 7-inch color L CD touch display screen, the interface is clear and friendly, the functions are complete, the operation is convenient, the overall layout of the device is reasonable, the structure is compact, the appearance is attractive, in addition, the alternating-current incoming wires and the 240V and 48V direct-current outgoing wires are respectively arranged on the front side and the rear side of the cabinet and do not interfere with each other, and the device can be replaced on line when a fault.

The embodiment of the present application further provides a power supply system, which includes any one of the multiple voltage level dc power supply apparatuses in the foregoing embodiments, and the implementation manner and the technical effects thereof are the same as those of the foregoing multiple voltage level dc power supply apparatus embodiment.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A multi-voltage class dc power supply apparatus, comprising: the device comprises a rectifying unit, an embedded unit and an output unit;

the rectifying unit is used for converting alternating current into first-grade direct current;

the embedded unit is connected with the output end of the rectifying unit and is used for converting the first-level direct current into a second-level direct current;

the output unit comprises a first-level output unit and a second-level output unit, wherein the input end of the first-level output unit is connected with the output of the rectifying unit and is used for outputting the first-level direct current; and the input end of the second-level output unit is connected with the output end of the embedded unit and is used for outputting the second-level direct current.

2. The multi-voltage class dc power supply of claim 1, further comprising: an alternating current inlet wire unit; and the alternating current inlet wire unit is connected with the input end of the rectifying unit and is used for providing alternating current input for the rectifying unit.

3. The multi-voltage class dc power supply of claim 2, further comprising: a power distribution unit; the power distribution unit comprises an alternating current power distribution unit and a direct current power distribution unit, and the alternating current power distribution unit is connected with the output end of the alternating current inlet wire unit.

4. The multi-voltage class dc power supply of claim 1, further comprising: a battery cell; and the battery unit is connected with the embedded unit and the input ends of the first-level output unit and used for supplying power to the output unit when the alternating current stops being input.

5. The multi-voltage class dc power supply of claim 4, wherein said battery unit comprises: the battery switch box is used for controlling the connection and disconnection of the battery unit and the output unit.

6. The multi-voltage class dc power supply of claim 5, further comprising: the monitoring unit comprises a main monitor, a current monitoring sensor and a switch state monitoring sensor; the current monitoring sensor is used for collecting current information and transmitting the current information to the main monitor; the switch state monitoring sensor is used for collecting the state information of the battery switch box and transmitting the state information of the battery switch box to the main monitor.

7. The multi-voltage class dc power supply of claim 6, further comprising: and the insulation monitoring unit is connected with the monitoring unit and used for detecting the insulation state of the first-level output unit and transmitting the insulation state of the first-level output unit to the main monitor.

8. The multi-voltage class dc power supply of claim 6, further comprising: a cabinet, the cabinet comprising: a front door, a side door, a rear door, a top plate and a bottom plate; the rectification unit, the embedded unit, the output unit and the power distribution unit are all arranged inside the cabinet, and the monitoring unit is arranged on a front door of the cabinet.

9. The apparatus according to claim 8, wherein the cabinet further comprises a battery rack, the battery is disposed on the battery rack, and the battery switch box is disposed on both sides of the battery rack.

10. A power supply system comprising a multi-voltage class dc power supply apparatus as claimed in any one of claims 1 to 9.

Images