CN210016313U - A New Type of Distributed DC Power Box - Google Patents

Abstract

The utility model provides a novel distributing type DC power supply case, including power supply case, intelligent charging module, lithium cell group and computer protection device, intelligent charging module is connected with lithium cell group and computer protection device respectively, and intelligent charging module input is connected with alternating current power supply, and intelligent charging module is equipped with the load output, intelligent charging module, lithium cell group and computer protection device install in the power supply case. When alternating current exists, the microcomputer protection device and the load output end are powered by the alternating current power supply, when the alternating current is out of power, the microcomputer protection device, the intelligent charging module and the load output end are powered by the lithium battery pack, the intelligent charging module detects the lithium battery pack and intelligently and uniformly floats for charging management, the service life of the battery pack is prolonged, the overall operation safety and reliability are improved, the microcomputer protection device monitors the intelligent charging module, the power transmission line fault, the power transmission line load and the self operation condition can be conveniently and timely detected, and the overall operation safety and reliability are improved.

Description

A New Type of Distributed DC Power Box

technical field

The utility model relates to the technical field of DC power supplies, in particular to a novel distributed DC power supply box.

Background technique

With the rapid progress of power technology, power system equipment is also developing in the direction of automation and intelligence, but one of the main factors restricting its development is the reliability, stability, scalability of the operating power supply and whether the battery charge and discharge management is tight. In order to ensure the normal functioning of the power system, the distributed DC power supply has increasingly become the focus of research. Under normal operation, the distributed DC power supply is in a floating charge standby state and runs in parallel with the charger. When the AC power fails, the distributed DC power supply is uninterrupted. It provides reliable DC power for the electrical equipment of the DC system, and supplies power for important devices such as secondary control lines, primary switchgear (spring mechanism vacuum circuit breaker, electric load switch, etc.), emergency lighting and communication optical transceivers. Therefore, as a backup power supply, the stability and safety of distributed DC power supply largely determine the development of the power system. However, most of the current distributed DC power supply boxes are installed in the instrument box of the switch cabinet, and it is more troublesome to replace the battery. At the same time, the batteries are mostly lead-acid batteries with poor cycle life, large size, heavy weight, and unfriendly to the environment.

SUMMARY OF THE INVENTION

In order to solve the above technical problems, a safe and reliable distributed DC power supply is provided.

A new type of distributed DC power supply box includes a power supply box, an intelligent charging module, a lithium battery pack and a microcomputer protection device, the intelligent charging module is respectively connected with the lithium battery pack and the microcomputer protection device, and the input end of the intelligent charging module is connected with an AC power supply , the intelligent charging module is provided with a load output end, and the intelligent charging module, the lithium battery pack and the microcomputer protection device are installed in the power supply box.

Preferably, an open space is provided between the lithium battery pack and the intelligent charging module.

Preferably, an air switch is provided between the input end of the intelligent charging module and the AC power supply, and an air switch is provided at the load output end of the intelligent charging module.

Preferably, the lithium battery pack includes a plurality of lithium batteries connected in series.

Preferably, the lithium battery pack includes a plurality of battery packs connected in parallel with each other, and the battery pack includes a plurality of lithium batteries connected in series.

The novel distributed DC power supply box provided by the utility model further comprises a signal light, the signal light is connected with the intelligent charging module, and the signal light is installed on the box door, the box top or the side wall of the power supply box.

Preferably, a battery pack bracket is provided on the lower side of the power box, and the lithium battery pack is mounted on the battery pack bracket.

Preferably, shutters are provided on both sides of the power box, and protective nets are provided on the shutters.

Preferably, a movable mounting board is provided on the back panel of the power box, and the intelligent charging module, the air switch and the microcomputer protection device are mounted on the movable mounting board.

Preferably, the movable mounting plate is detachably fixed on the backplane of the power box, and a gap is provided between the movable mounting plate and the backplane of the power box.

Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When there is alternating current, the microcomputer protection device and the load output terminal are powered by the AC power supply, and when the AC power is lost, the microcomputer protection device, the intelligent charging module and the load output terminal are powered by lithium The battery pack supplies power, and the intelligent charging module detects the lithium battery pack and manages its intelligent floating charge, which is beneficial to prolong the life of the battery pack and improve the overall operation safety and reliability. The microcomputer protection device monitors the intelligent charging module, which is convenient for timely detection of power transmission. Line failure, transmission line load and its own operation, improve the overall operation safety and reliability; 2. The use of small-volume lithium battery packs, the power box is designed to be smaller, which is easy to install and place the power box; 3. The power box There is a detachable movable mounting plate, and the intelligent charging module, air switch and microcomputer protection device are installed on the movable mounting plate, which is convenient for assembling the power box, and at the same time, it is convenient for maintenance and repair.

Description of drawings

Fig. 1 is the front view of the power box structure of the present invention;

Fig. 2 is the left side view of the power box structure of the present utility model;

FIG. 3 is a logic block diagram of the present invention.

Symbols in the drawings: 1-power box, 2-intelligent charging module, 3-air switch, 4-lithium battery pack, 5-battery pack bracket, 6-AC power supply, 7-load output end, 8-microcomputer protection device , 9-signal light, 10-movable mounting plate.

Detailed ways

The specific embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

The utility model provides a novel distributed DC power supply, as shown in Figures 1 and 3, comprising a power supply box 1, an intelligent charging module 2, a lithium battery pack 4 and a microcomputer protection device 8, and the intelligent charging module 2 is respectively connected with the lithium battery pack 4 is connected to the microcomputer protection device 8, the input terminal of the intelligent charging module 2 is connected to the AC power supply, the intelligent charging module 2 is provided with a load output terminal 7, and the intelligent charging module 2, the lithium battery pack 4 and the microcomputer protection device 8 are installed in the Inside the power box 1. The intelligent charging module 2 is used to detect the lithium battery pack 4 and manage its intelligent floating charge, which is beneficial to prolong the life of the lithium battery pack 4 and improve the overall operation safety and reliability; when there is alternating current, the microcomputer protection device 8 and The load output terminal 7 is powered by the AC power supply; when the AC power is lost, the microcomputer protection device 8, the intelligent charging module 2 and the load output terminal 7 are powered by the lithium battery pack; the microcomputer protection device 8 monitors the intelligent charging module 2 by collecting voltage and current, It is convenient to detect the fault of the transmission line, the load of the transmission line and its own operation in time, and further improve the safety and reliability.

There is an air switch 3 between the lithium battery pack 4 and the intelligent charging module 2. After the air switch is disconnected, the lithium battery pack 4 can be replaced, which is convenient for replacing the lithium battery pack 4; there can be an air switch 3 between the input end of the intelligent charging module 2 and the AC power supply. The air switch 3 is convenient to cut off the power supply in case of failure or maintenance; the load output terminal 7 of the intelligent charging module 2 can also be provided with an air switch, and the air switch is cut off to stop the output voltage of the load output terminal 7 .

A lithium battery pack composed of multiple lithium batteries in series to achieve a predetermined voltage; the lithium battery pack 4 may include one lithium battery pack, or multiple lithium battery packs connected in parallel to increase the capacity of the lithium battery pack. In a specific embodiment, a single-cell lithium battery is 12V, four lithium batteries are connected in series to form a 48V 20Ah battery pack, and two battery packs are connected in parallel to form a 48V 40Ah battery pack. The volume of the lithium battery is small, so the volume of the power supply box 1 can be designed to be smaller, which is convenient for installation and placement of the power supply box. As shown in FIG. 2 , the lower side of the power box 1 is provided with a battery pack bracket 5 , and the lithium battery pack 4 is installed on the battery pack bracket 5 to prevent the lithium battery pack from being placed on the bottom of the box to avoid moisture corrosion.

The novel distributed DC power supply provided by the present utility model further comprises a signal light 9, which is connected to the intelligent charging module 2, the signal light 9 is installed on the box door, the box top or the side wall of the power box 1, and the signal light can use three-color signal lights, It is convenient to remind managers of fault, alarm, normal, power failure and other usage states.

Shutters are provided on both sides of the power box 1 to facilitate ventilation and cooling; the shutters are provided with protective nets to prevent foreign objects from entering the power box. The power box 1 is also provided with a movable mounting plate 10 , the movable mounting plate 10 is detachably fixed on the back plate of the power box 1 through bolts, and the intelligent charging module 2 , the air switch 3 and the microcomputer protection device 8 are installed on the movable mounting plate 10 , easy to assemble, maintain and repair. There is a gap between the movable mounting plate 10 and the back plate of the power box 1, which is convenient for wiring and makes the box more concise and beautiful. In a specific embodiment, the model of the intelligent charging module 2 is ZBC300-2D48DN.

The above are only the preferred embodiments of the present utility model. It should be pointed out that for those skilled in the art, without departing from the technical principles of the present utility model, several improvements and modifications can be made. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims (10)

1. A novel distributed DC power supply box, comprising a power supply box, an intelligent charging module and a lithium battery pack, is characterized in that, also comprises a microcomputer protection device, and the intelligent charging module is respectively connected with the lithium battery pack and the microcomputer protection device, and the intelligent The input end of the charging module is connected with the AC power supply, the intelligent charging module is provided with a load output end, and the intelligent charging module, the lithium battery pack and the microcomputer protection device are installed in the power supply box. 2 . The novel distributed DC power supply box according to claim 1 , wherein an air switch is provided between the lithium battery pack and the intelligent charging module. 3 . 3. The novel distributed DC power box according to claim 1 or 2, wherein an air switch is provided between the input end of the intelligent charging module and the AC power supply, and the load output end of the intelligent charging module is provided with an air switch. open. 4 . The novel distributed DC power supply box according to claim 1 , wherein the lithium battery pack comprises a plurality of lithium batteries connected in series. 5 . 5 . The novel distributed DC power supply box according to claim 1 , wherein the lithium battery pack includes a plurality of battery packs connected in parallel with each other, and the battery pack includes a plurality of lithium batteries connected in series with each other. 6 . 6 . The novel distributed DC power box according to claim 1 , further comprising a signal light, the signal light is connected to the intelligent charging module, and the signal light is installed on the box door, box top or side wall of the power box. 7 . . 7 . The novel distributed DC power box according to claim 1 , wherein a battery pack bracket is provided on the lower side of the power box, and the lithium battery pack is installed on the battery pack bracket. 8 . 8 . The novel distributed DC power supply box according to claim 1 , wherein shutters are provided on both sides of the power supply box, and protective nets are provided on the shutters. 9 . 9 . The novel distributed DC power supply box according to claim 1 , wherein a movable mounting plate is arranged on the back panel of the power supply box, and the intelligent charging module, the air switch and the microcomputer protection device are installed on the movable mounting plate. 10 . superior. 10 . The novel distributed DC power supply box according to claim 9 , wherein the movable mounting plate is detachably fixed on the backplane of the power supply box, and a void.

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