KR200428273Y1 - Battery Mount Rectification System - Google Patents

Abstract

The present invention distributes the input power input through the surge protector to each rectifier module and rectifies the AC power to the DC power supply, the DC distribution module to charge the battery and distribute the DC power output and each part The present invention relates to a rectifying system for an exchange station or a base station, in which a control module for monitoring and controlling status is installed in one rectifier rack, and in particular, eight small rectifier modules of DC48V / 50A class are mounted and a 400A rectifier rack and a DC12V / It relates to a battery-mounted rectification system in which the battery rack mounted with 8 cell (two sets) batteries of 200AH class or DC24V / 100AH class to DC48V / 50AH class consists of one rack.

Therefore, the present invention provides a system in which an integrated rack is installed, which greatly reduces the installation area and improves efficiency and safety.

Rectification system

Description

Rectification system within storage battery

1 is a block diagram of a power supply system for a typical switching center or base station.

Figure 2 is an exemplary view showing one rack configuration of a 1000A class system according to the prior art.

Figure 3 is an exemplary view showing an installation configuration of a 5000A-class system according to the prior art.

4 is a block diagram of a rectifying system for a switching center or a base station according to the present invention.

5 is a block diagram of a rectifying module of the rectifying system according to the present invention.

Figure 6 is an example of mounting the PCB of the rectification module according to the present invention.

Figure 7 is an exploded view of each rack movement of the rectification system according to the present invention.

Figure 8 is an integrated example of a capacitor mounted rectifying system according to the present invention.

<Description of the code | symbol about the principal part of drawing>

200: rectifier rack 210: control module

220: rectification module 230,320: axis

300: battery rack 310: storage battery

The present invention relates to a rectifying system of a telecommunication switching center, and more particularly, to a battery-mounted rectifying system with a structure of a small integrated rack, which greatly reduces the installation area while maintaining the capacity of the rectifier module.

Due to the rapid development of the wireless communication market, a base station network has been formed nationwide, and the power supply system required for base station operation has been quantitatively developed. However, each device has been miniaturized, lightweighted, and greatly improved in performance through quality development, but has not escaped from the classical method in the overall power supply system. That is, the conventional power supply for a communication device accommodates an uninterruptible power supply (UPS) and a rectifier as a separate device, and during a power failure, the UPS converts the DC power of the battery into AC to supply power. Normally, the AC input power is installed in parallel with the DC converter and the battery in order to supply the DC, and is configured to stably supply the power to the communication device by the discharge of the battery during the power failure.

A conventional power supply system installed in a switching center or a base station includes a surge protection circuit 1 for blocking a surge at an input power supply (for example, AC 380V) stage as shown in FIG. 1, and a rear end of the surge protection circuit 1. AC distribution module (2) for distributing power to each rectifier module, a plurality of rectifier modules (3) connected in parallel from the AC distribution module (2) to convert AC into direct current, and the plurality of rectifier modules ( 3) a DC distribution module (4) for supplying the charging power of the battery (5) to the common power at the rear stage and outputting the DC power required by the switching center or the base station through the DC distribution fuses in common with the power of the battery (5); And a control module 6 for monitoring and controlling the states of the rectifier module 3 and the DC distribution module 4.

The power supply system of a general switching station or base station configured as described above converts an input power source (AC 380V) from a rectifier module 3 to a DC power source to charge the battery 5, and a DC distribution module in common with the battery charging power source. It is configured to supply the DC48V power supply (negative power supply) of the exchanger through (4).

2 is an external configuration diagram of a 1000A class power system according to the prior art.

As shown in FIG. 2, an AC distribution module 2 and a control module 6 are installed at an upper side in a single system housing, a plurality of rectifier modules 3 are installed at a lower portion thereof, and a distribution fuse of a DC distribution module. And battery fuses are installed to form a basic rack.

The basic rack is a module that performs 100 A AC-DC conversion rectification processing per one rectifier module 3, showing that ten rectifier modules 3 are mounted in the basic rack to form a 1000 A class system. Here, the DC distribution module 4 is composed of fuses, which can be installed separately from the PDR rack to mount a plurality of output fuses, and can be configured as independent battery racks equipped with a battery 5, and have a large number of large sizes. Because of the need to install a battery, a large installation space is required.

Looking at the specifications of the basic rack according to the prior art, it is 880 (W) X 750 (D) X 1880 (H) (unit mm), one of the rectifier module (3), 126 (W) X 550 ( D) X 446 (H) in mm. Therefore, up to 10 rectifier modules can be mounted in a basic rack. This is because the size of the rectifier module 3 is large because of the size and mounting technology of the internal circuit and components, the installation space of the entire power system occupies a lot.

FIG. 3 is an exemplary installation diagram of a 5000A class power system according to the prior art. As shown therein, a basic rack and an expansion having one size of 880 (W) X 750 (D) X 1880 (H) in mm is shown. An example of a system in which 100 A rectifier modules are mounted in a rack and 10 are mounted in a rack so as to output up to 5000 A by connecting five 1000 A racks in parallel.

As described above, a power system installed in a conventional switching center or a base station is installed with 10 100A rectifier modules mounted in a rack and configured up to a 1000A class rack, so that the power system is installed in a different area (eg; Compared to the exchange system), it occupies much more area, so there is a lot of difficulty in securing the space, and it is inconvenient to manage because a plurality of racks are installed in parallel.

The present invention is to provide a rectifier system mounted a storage battery by reducing the size of the rectifier module significantly compared to the conventional rectifier module in order to solve the conventional problems as described above.

The rectifier module according to the present invention replaces each of the large components used in the rectifier circuit, the power factor correction circuit, the high speed rectifier circuit, and the filter circuit in the conventional rectifier module with small components, and replaces the small components for processing of the same capacity. The parallel arrangement provides a rectifier module with the same overall throughput and significantly reduced size.

The rectification system for a switching station or base station according to the present invention includes an AC distribution module for distributing input power input through a surge protector to each rectifier module, a rectifier module for rectifying AC power with a DC power supply, a fuse for a battery protection, and a DC power supply. A rectifier rack comprising 20 output fuses for distributing and control modules for monitoring and controlling the state of each unit; In the rectification system for a switching station or base station comprising a battery rack capable of mounting the battery to charge the output voltage of the rectifier module to the battery or to supply the discharge current to the system in the event of power failure,

The rectifier rack and the battery rack mounted with the 8 cell (two sets) of the DC12V / 200AH class or DC24V / 100AH class to DC48V / 50AH class is characterized by consisting of one rack.

The rectifier rack is characterized in that to mount eight small rectifier modules of the DC48V / 50A class.

The rectifier rack and the battery rack are disassembled during the movement, characterized in that to move by assembling the urethane wheel for movement on the bottom respectively.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

4 is a block diagram of a rectifying system for a switching center or a base station according to the present invention, and a surge protection circuit and an AC measurement unit 11 for performing surge protection and AC measurement from an AC input as shown in FIG. 4, and the surge protection circuit. AC distribution module 12 for distributing AC power supplied through each rectifier module, and AC power distributed from the AC distribution module 12 to DC power to convert to DC voltage (DC 48V) for the exchanger. A rectifier module 13, a battery 15 for charging with the output voltage of the rectifier module 13, and a DC distribution module for distributing and outputting the voltage of the battery 15 and the voltage of the rectifier module 13 to each load side. 14 and a control module 16 which communicates with the AC measurement signal and the respective rectifier modules to monitor and control the power system and to transmit monitoring information and alarms.

In the present invention, the control module can be configured to control up to 8 rectifier modules in one rectifier by using a parallel control monitoring method, and display and collect input and output voltages and currents, and battery charge and discharge currents. It can be configured to transmit the information to the outside through the alarm port and send out separate contact alarm. In addition, the battery charging current limit function is performed, and the battery compartment temperature is measured to configure the temperature compensation charging according to the temperature.

5 is a rectification module block diagram of a rectification system according to the present invention, as shown in FIG. 5, an EMI filter circuit 10 and an alternating current between the filter circuit 10 and a surge diode of an input power source are blocked. A rectification circuit 20 for converting the direct current into a direct current, a direct current of the rectifying circuit 20 through the inrush current limiting circuit 30, and a power factor correction circuit 40 for compensating for the power factor, and a power factor corrected DC. An input smoothing circuit 50 for smoothing, a switching / transforming circuit 60 for high speed switching and transforming the smoothed DC power supply by PWM control, a high speed rectifying circuit 70 for rectifying the transformed voltage, and rectified An output filter circuit 80 for filtering a voltage signal, a reverse flow prevention circuit 90 for preventing reverse flow from the output terminal, and outputting the feedback to the PWM control, power factor PWM control, output protection and input protection, etc. It is configured to include a control circuit 100 for controlling .

The control circuit 100 receives an input of the power of the input smoothing circuit 50 and supplies an auxiliary power supply 150 to supply power to each part, and compares the voltage of the input smoothing circuit 50 with a reference voltage to protect the input. An input protection circuit 160 for generating a control signal for the power source; and a power factor PWM control unit 170 for controlling the power factor of the power factor correction circuit 40 by receiving the voltage of the input smoothing circuit 50; An output protection circuit 120 generating an output compensation signal by comparing the output of the output filter circuit 80 with a reference voltage; A load distribution circuit 130 for receiving distribution voltage of the output terminal of the backflow prevention circuit 90 as a reference voltage and controlling distribution of each load; An alarm circuit 140 for receiving an alarm signal; The switching / transformer circuit 60 is controlled by the input signals of the input protection circuit 160, the output protection circuit 120, the load distribution circuit 130, and the alarm circuit 140. And a PWM control unit 110 for controlling the switching / transformer circuit by PWM control based on the feedback voltage from 80).

Although not shown in detail in the drawing, the control circuit communicates with the control module, such as input protection, output protection, load distribution, and alarm control, by means of communication with the control module so that the administrator can monitor and transmit to a remote location. Is done.

Here, the feature of the present invention, the rectifier circuit 20, the AC input bridge diode is designed to be distributed in two stages in parallel, the power factor correction circuit 40 is designed to drive the drive choke in four stages parallel circuit The output filter circuit 80 includes two output chokes in parallel by a winding method using a small copper foil, and the backflow prevention circuit 90 uses a FET having a voltage drop of 0.2V to prevent backflow from the output stage. Configured to do so.

In addition, the EMI filter circuit 10 and the rectifier circuit 20 is configured to shield other blocks by the shielding plate 201 inside the rectifier module, the rectifier circuit 20, the switching / transformer circuit 60, the high-speed rectifier circuit 70 is configured by designing and applying separate heat sinks.

According to the present invention configured as described above, external noise or EMI is blocked by the EMI filter circuit 10 with respect to the input power, and rectified by the DC diode from the rectifier circuit 20 by the bridge diode. Conventional rectifier modules, but the input EMI filter circuit and the main switching circuit is a mixed configuration inside the module, in the present invention is shielded between the input EMI filter circuit 10 and the main switching circuit with a mechanism and absorbed to the ground to the noise (conduction , Radiation noise). That is, the shielding partition 101 shown in FIG. 5 is installed to minimize noise.

In the rectifier circuit 20, one AC input bridge diode is conventionally used, that is, one AC input bridge diode having a large capacity is used. However, in the present invention, the AC input bridge diode is designed in parallel in two stages. By reducing it to 1/2 compared to the size and reducing the forward voltage drop (Vf), it is possible to achieve high efficiency and miniaturization by reducing heat loss by distributing the current loss of two conventional ones.

In the power factor correction circuit 40, one drive choke of the power factor correction circuit has been used, but in the present invention, the drive choke is designed to be miniaturized by designing a small 4-stage parallel circuit as shown in the drawing. The power consumption of 15A per large capacity is distributed to four 800W class driving chokes, which are small in size and have high efficiency.

In addition, in the present invention, the heat dissipation heat dissipation design was designed differently from the existing rectification modules. In the present invention, the heat dissipation was integrated by the respective circuits within the rectification module. By separating and maximizing the heat dissipation and heat dissipation effect, it is miniaturized. Also, each noise source is separated and the insulation effect between the primary and the secondary is improved.

In the present invention, as shown in FIG. 6, the mounting method of each board is configured to be in close contact, and in the past, the mounting method of securing a spaced space between the case and the PCB or between the PCB and the PCB. This requires a basic separation distance in order to reduce the effects of electromagnetic waves or heat radiation between each PCB, and the overall size is increased. On the contrary, in the present application, as shown in FIG. 6, the installation space is minimized by inserting and inserting the insulating paper 104 between the case 102 and the PCB 103 or between the PCB 103 and the PCB 103. It is miniaturized. It is possible to reduce the size and reduce the noise effect by distributing large components into small components in the circuit part, so that problems such as the effects of insulation and electromagnetic waves can be solved by inserting insulating paper.

In addition, although the output filter circuit 80 has conventionally used one large output choke, in the present invention, two small output chokes have been improved by a winding method using copper foil, and the coupling degree is increased to design a parallel structure to reduce the size and efficiency. Will be increased.

In addition, the reverse flow prevention circuit 90 of the output stage conventionally uses a diode to protect the output side between the rectifier modules, the voltage drop of the diode occurs about 0.7V. In contrast, in the present invention, the efficiency is increased by configuring as an ORING circuit using a FET (voltage drop 0.2V).

As described above, large parts are distributed into small and plural parts in each circuit part, PCB is also designed as a four-layer board, surface-mounted parts are integrated, and layout design is made using insulating paper to minimize the separation distance between each PCB. High efficiency and compactness by distributing multiple heat sinks in each circuit and designing the optimal air flow with two cooling fans at the front or the bottom for heat dissipation problems that can be caused by high integration and size reduction. Is an implementation of

As described above, in the present invention, since the rectification module can be miniaturized and configured, it is possible to design a structure in which up to eight rectification modules can be mounted in one rack.

Figure 7 is an exploded view of each rack movement of the rectifying system according to the present invention, Figure 8 is an integrated illustration of a capacitor-mounted rectifying system according to the present invention.

As shown in Figure 7 and 8, the rectifier rack 200, the EMI filter circuit for the surge and EMI blocking of the input power, and the alternating current of the filter circuit is converted to direct current through the bridge diode, the rectifier circuit The rectifier module 220 receives the direct current through the inrush current limiting circuit, compensates the power factor, smoothes the power factor corrected DC, and converts the DC power at high speed by PWM control, and filters the rectified signal from the output stage. It includes a control module 210 to prevent the reverse flow, and receives the output power feedback to control the PWM control, power factor PWM control, and output protection and input protection, the rectification module 220, AC input The bridge diode is designed to be distributed in two stages in parallel, and the driving chokes are designed in four stages by compensating the power factor.

The control module 210 has two output chokes in parallel with a winding method using a small copper foil and prevents backflow by using a FET having a voltage drop of 0.2V.

The control module 210 receives the voltage of the output terminal of the backflow prevention circuit as a reference voltage to control distribution of each load, and performs PWM control based on the feedback voltage.

In addition, the rectification module 220 according to the present invention, by applying a heat sink for each input and output of each circuit to enhance the heat dissipation and heat dissipation effect, miniaturization, and isolation of the primary secondary by separating the noise source In order to minimize the mounting space by minimizing the mounting space by insulated paper between the case and the PCB or between the PCB and the PCB, the present invention minimizes the size of the PCB. It is characterized by realizing miniaturization by integration into design.

The rectification system according to the present invention using the small rectification module 220 as described above, is characterized in that the rectifier rack 200 and the battery rack 300 is mounted to implement a single rack integrated rack 500.

The rectifier module has four rectifier modules arranged in one shelf, distributes input AC power from each of the alternating current distribution modules to each shelf, and separately installs an input protection circuit breaker (NFB) for each module in the shelf of each shelf. To distribute the input to the rectifier module.

The integrated rack mounts 8 small rectifier modules 220 of DC48V / 50A class to mount 400A rectifier rack 200 and DC12V / 200AH class 4 cells of two sets of capacitors 310 to store DC48V / 400AH capacitor racks. The rack 300 is configured as one rack 500 and the size of the rectifying module 220 is miniaturized to allow the storage battery 310 to be mounted in the lower space. That is, conventionally provided with a separate rack for storing only the capacitor in addition to the rectifier rack, but the battery rack 300 is placed below the rectifier rack 200 in the present design to reduce the installation space to a minimum range.

At one corner of the bottom of the rectifier rack 200 and the battery rack 300, the support shafts 230 and 320, which are cylindrical protrusions, are formed to be disassembled during movement, and are equipped with urethane wheels (not shown) during movement or disassembly.

The support shafts 230 and 320 and the hollow binding unit 330 are combined to form an integrated rack, and the upper end of the battery rack 310 and the bottom of the rectifier rack 200 coincide with each other without gaps.

Here, conventionally, the rectifier rack and the battery rack were installed side by side each one rack, but if you look at the configuration of the 400A class rectifier rack of the present invention, 12V 200AH 8 cells to form a battery rack and 50A class rectification module on the top It is equipped with a rectifier rack by mounting eight, reducing the installation space by half.

In addition, in the present invention, the drive choke of power factor compensation is distributed in four drive chokes with the most efficient capacity, and the power factor is compensated by controlling by the power factor PWM control unit. It improved to 98% and the efficiency also improved from 91% to 92%.

In addition, by installing a shielding partition, the effect of harmonics is greatly reduced, and the design of the flow structure of the cooling air is optimized and integrated, and the operating temperature of 0 to 50 degrees is -20 to 60 degrees. The range has been significantly improved, further enhancing safety against external environmental impacts.

On the other hand, in the present design, the input changeable structure and the input distribution design, and the input is fixed at the time of manufacture, the factory must be replaced after the installation of the rectifier module in the case of step-up or step-down after installation, the input distribution is phase-by-phase Input is supplied to each rectifier module through wiring, and the input protection circuit breaker (NFB) for each rectifier module is mounted in the rectifier module. On the contrary, in the present invention, even after installation, the input (3-phase 380V, 3-phase 220V, single-phase 220V) structure can be easily changed to design the structure to accommodate all the above input conditions, and the input distribution can be changed through each stage. It is designed to have miniaturization and safety by supplying input to self and installing separate input protection circuit breaker (NFB) for each module.

As described in detail above, the present invention provides an effective configuration by miniaturizing the structure of the rectifier module and improving the efficiency and power factor in the rectification system installed in the switching center or the base station. Rectifier module according to the present invention has an effect that the installation area is significantly reduced compared to the existing system. In addition, the rectifier module according to the present invention has the effect of easy expansion and field adaptability, easy maintenance and safe operation management.

Claims (9)

AC distribution module for distributing input power input through surge protector to each rectifier module, rectifier module for rectifying AC power with DC power, fuse for battery protection, 20 output fuses for distributing DC power, and status of each part. A rectifier rack comprising a control module for monitoring and controlling; In the rectification system for a switching station or base station comprising a battery rack capable of mounting the battery to charge the output voltage of the rectifier module to the battery or to supply the discharge current to the system in the event of power failure, The rectifier rack and the battery rack mounted rectifier system, characterized in that the battery rack is mounted with a rack of 8 cells (2 sets) of DC12V / 200AH or DC24V / 100AH class to DC48V / 50AH class. The method of claim 1, The rectifier rack is a battery-mounted rectifier system, characterized in that for mounting the eight DC 48V / 50A class small rectifier module. The method of claim 1, The rectifier rack and the battery rack is disassembled during the movement, the battery-mounted rectifier system, characterized in that to move by assembling the urethane wheel for movement on the bottom respectively. The method of claim 1, wherein the rectifier module, EMI filter circuit for input surge and EMI blocking, A rectifier circuit for distributing the alternating current of the filter circuit in a two-stage parallel configuration of a small AC bridge diode to convert it into a direct current; A power factor correction circuit for correcting the power factor by receiving the direct current of the rectifier circuit through an inrush current limiting circuit, but designing a small drive choke as a four-stage parallel circuit; An input smoothing circuit for smoothing power factor corrected direct current, A switching / transformer circuit for converting the smoothed DC power supply at high speed by PWM control; A high speed rectifier circuit for rectifying the transformed voltage, Filter the rectified signal. An output filter circuit configured to filter two output chokes in parallel by winding using a small copper foil; A reverse flow prevention circuit composed of an ORING circuit using a FET having a voltage drop of 0.2 V to prevent reverse flow from the output stage; And a control circuit configured to control the PWM control, the power factor PWM control, and the output protection and the input protection by receiving the output power. The method of claim 4, wherein the control circuit, An auxiliary power supply which receives the power of the input smoothing circuit and supplies the power to the operation power of each unit; An input protection circuit for generating a control signal for input protection by comparing the voltage of the input smoothing circuit with a reference voltage; A power factor PWM control unit which receives the voltage of the input smoothing circuit and performs power factor control of the power factor correction circuit; An output protection circuit for generating an output compensation signal by comparing the output of said output filter circuit with a reference voltage; A load distribution circuit for receiving the voltage of the output terminal of the backflow prevention circuit as a reference voltage and controlling distribution of each load; An alarm circuit for receiving an alarm signal; The switching / transformer circuit is controlled by input signals of the input protection circuit, output protection circuit, load distribution circuit, and alarm circuit, and the switching / transformer circuit is controlled by PWM control based on a feedback voltage from the output filter circuit. Capacitor-mounted rectifier system comprising a PWM control unit for controlling the. The method of claim 4, wherein the rectifier module, And the EMI filter circuit and a shielding partition wall for shielding the rectifier circuit from other circuit blocks. The method of claim 4, wherein the rectifier module, And the rectifier circuit, the switching / transformer circuit, and the high speed rectifier circuit are each provided with separate heat sinks. The method of claim 1, wherein the rectifier module, A battery-mounted rectifier system, characterized in that the arrangement between the case and the PCB or between the PCB and the PCB using a close arrangement. The method of claim 1, wherein the rectifier module, Four rectifier modules are placed in one shelf, the input AC power is distributed from the AC distribution module to each shelf from the AC distribution module, and an input protection circuit breaker (NFB) is separately installed for each module in the shelf of each shelf to the rectifier module. And a battery-mounted rectifier system configured to distribute the input.

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